Installation and Operating Instructions

Leader in
Level Measurement
For Assistance Call 1-800-527-6297
Outside North America + 215-674-1234
Installation and
Operating Instructions
ThePointTM Series
Two Wire
Point Level Switch
+ 215-674-1234 Outside North America
1-800-553-9092 US and Canada
www.drexelbrook.com
[email protected]
AMETEK Drexelbrook makes no warranty of any kind with regard to the material contained
in this manual, including, but not limited to, implied warranties or fitness for a particular
purpose. Drexelbrook shall not be liable for errors contained herein or for incidental
or consequential damages in connection with the performance or use of material. All
information contained in this manual is subject to change without notice
Copyright 2005 AMETEK Drexelbrook
EDO # 02-05-243
PNT1-LM
ISSUE# 5
ThePointTM Series
Two Wire
Point Level Switch
An ISO 9001 Certified Company
205 Keith Valley Road, Horsham, PA 19044
US and Canada:
1-800-553-9092
International:
+1 215-674-1234
24-Hour Service:
+1 215-527-6297
Fax:
+1 215-674-2731
E-mail:
[email protected]
Website:
www.drexelbrook.com
Register
ThePoint
TM
and extend your warranty to 24 months
24 Month Warranty
Registration at...
www.drexelbrook.com
Extend your warranty!
...from 12 months to 24 months by
registering your purchase. Please
go to www.drexelbrook.com and
click on the pull down menu
"Contact Us" than "Warranty
Registration" and fill out the form.
Table Of Contents
Section 1:Introduction ........................................................................................................ 1
1.1
System Description .............................................................................................. 1
1.2
Technology ........................................................................................................... 1
1.3
Model Number...................................................................................................... 2
1.4
Housing Dimensions ........................................................................................... 4
Section 2:Installation .......................................................................................................... 5
2.1
Unpacking ............................................................................................................ 5
2.2
Mounting And Installation Guidelines................................................................... 5
2.3
Input Wiring .......................................................................................................... 7
2.4
Output And Led Status........................................................................................ 8
2.5
Electronic Unit ..................................................................................................... 9
2.5.1 Time Delay ........................................................................................................... 9
2.5.2 Time Delay Action ................................................................................................ 9
2.5.3 Current Output Assignment.................................................................................. 9
2.5.4 Failsafe .............................................................................................................. 10
2.5.5 Recal .................................................................................................................. 10
2.6
Spark Protection................................................................................................. 11
2.7
Sensing Element Connection............................................................................. 11
Section 3:Troubleshooting ............................................................................................... 15
3.1
Testing Sensing Element.................................................................................... 15
3.2
Testing Electronic Unit ........................................................................................ 16
3.3
Over Range ........................................................................................................ 17
3.4
Under Range...................................................................................................... 17
3.5
Testing Integral Cable......................................................................................... 17
3.6
Testing Remote Cable ........................................................................................ 18
3.7
Factory Assistance ............................................................................................. 18
3.8
Field Service ...................................................................................................... 19
3.9
Customer Training .............................................................................................. 19
3.10 Equipment Return .............................................................................................. 19
Section 4:Specifications................................................................................................... 21
Section 5:Approvals Available ......................................................................................... 23
Section 6:Control Drawings ............................................................................................. 25
6.1
Fm Control Drawings.......................................................................................... 25
6.2
Atex Control Drawings........................................................................................ 39
Appendix A
Shortening Or Lengthening Sensing Element....................................................A1
The Point™ Series
SECTION 1:
1.1
Introduction
INTRODUCTION
System Description
The AMETEK Drexelbrook ThePoint™ Series uses No-Cal™
technology to detect the presence or absence of material
without calibration or initiation via setpoint adjustments,
push-buttons, or magnets.
The sensing
element must be
uncovered before
applying power.
1.2
Technology
k air
d
C
Installation is simple and easy. Simply apply power and
ThePoint system is ready to detect the presence or absence
of material. Since ThePoint instrument does not require
calibration or setpoint adjustments, it is capable of operating
in non-dedicated tanks regardless of the material being
measured.
A
d
k air
C
A
k media
k media
kA
C= d
kA
C = d
Figure 1-1
Simple Capacitance
Probe
In a simple capacitance probe type sensing element,
when the level rises and material covers the probe, the
capacitance within the circuit between the probe and the
media (conductive applications) or the probe and the vessel
wall (insulating applications) increases. This is due to the
dielectric constant (k) of the material which causes a bridge
misbalance. The signal is demodulated (rectified), amplified,
and the output is increased. There are drawbacks, however,
especially when there is coating of the probe.
An RF Admittance level transmitter is the next generation.
Although similar to the capacitance concept, ThePoint
employs a radio frequency signal and adds the Cote-Shield™
circuitry within the Electronics Unit.
This patented Cote-Shield™ circuitry is designed into
ThePoint series and enables the instrument to ignore the
effect of buildup or material coating on the sensing element.
The sensing element is mounted in the vessel and provides
a change in RF admittance indicating presence or absence
of material. The Cote-Shield element of the sensing element
prevents the transmission of RF current through the coating
on the sensing element. The only path to ground available
for the RF current is through the material being measured.
The result is an accurate measurement regardless of the
amount of coating on the probe, making it by far the most
versatile technology, good for very wide range conditions
from cryogenics to high temperature, from vacuum to 10,000
psi pressure, and works with all types of materials.
Figure 1-2
RF Admittance
Probe with Cote-Shield
1
The Point™ Series
1.3
Introduction
Model Number
ThePoint™
Technology
P
RF Admittance
Measurement Type
N
No Calibration, Point Level
H
No Calibration, Point Level, with High Sensitivity
Input
T
Two Wire Power Supply 13 to 30 Vdc
Output
0
8-16 mA
Housing
0
1
2
3
4
No Approvals, NEMA 4X/IP66, M20 x 1.5 conduit entries
No Approvals, NEMA 4X/IP66 3⁄4" NPT conduit entries
CENELEC/ATEX pending - not available
FM Approved
CSA Approval pending - not available
Electronics
0
Integral
1
Remote, no cable
2
Remote with 3 m (10 feet) cable
3
Remote with 7.6 m (25 feet) cable
4
Remote with 10.6 m (35 feet) cable
5
Remote with 15.2 m (50 feet) cable
6
Remote with 23 m (75 feet) cable
continued on next page
Sensing Element
Application
General purpose
Sensing Element
700-1202-001 remote
700-1202-021 integral
Pressure/Temperature
13.8 bar @ 232˚C (200 PSI @ 450˚F)
Wetted Parts
316SS and PEEK
01
Floating roof with
cable attachment
and brass bottom
weight
700-1202-012 remote
700-1202-022 integral
13.8 bar @ 177˚C (200 PSI @ 350˚F)
316SS, Brass,
and PEEK
02
General purpose,
700-1202-014 remote
longer insertion lengths
700-1202-024 integral
with cable attachment
and 316SS bottom weight
13.8 bar @ 177˚C (200 PSI @ 350˚F)
316SS and PEEK
03
Proximity
700-1202-018 remote
700-1202-028 integral
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and PEEK
with 76 mm (3)
316SS proximity plate
04
General purpose,
high temperature
and pressure
700-1202-041 remote
700-1202-042 integral
69 bar @ 121˚C (1000 PSI @ 250˚F)
20.7 bar @ 232˚C (300 PSI @ 450˚F)
316SS and PEEK
06
General purpose with
FDA approved
materials of construction
700-1202-031 remote
700-1202-031 integral
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and FDA grade
PEEK
07
General purpose
Granular materials
700-1202-010 remote
700-1202-020 integral
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and PEEK with
7/8 inch dia. 316SS collar
09
General purpose
Granular materials with
FDA approved
materials of construction
700-1202-033 remote
700-1202-034 integral
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and FDA grade
PEEK with 7/8 inch dia.
10
Corrosive liquids (2)(4)(9)
700-0001-018
3.4 bar @ 149˚C (50 PSI @ 300˚F)
PFA
11
General purpose,
700-0201-005
higher pressure
TFE compatibility required
69 bar @ 38˚C (1000 PSI @ 100˚F)
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and TFE
12
Corrosive material,
higher pressure
700-0201-005
Hastelloy C
69 bar @ 38˚C (1000 PSI @ 100˚F)
13.8 bar @ 232˚C (200 PSI @ 450˚F)
Hastelloy C and TFE
13
Sanitary (3)
700-0201-036
69 bar @ 38˚C (1000 PSI @ 100˚F)
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316/316L SS and TFE
14
General Purpose,
low pressure
700-0202-002
3.4 bar @ 149˚C (50 PSI @ 300˚F)
1.4 bar @ 232˚C (20 PSI @ 450˚F)
316SS and TFE
15
Heavy duty, agitated
tanks or material
with high bulk density (1)
700-0202-043
69 bar @ 38˚C (1000 PSI @ 100˚F)
13.8 bar @ 232˚C (200 PSI @ 450˚F)
316SS and TFE
17
Sanitary (3) lowpressure
700-0202-036
3.4 bar @ 149˚C (50 PSI @ 300˚F)
1.4 bar @ 232˚C (20 PSI @ 450˚F)
316SS and TFE
18
Corrosive material,
higher pressure with
waterlike viscosity (4)
700-0001-022
69 bar @ 38˚C (1000 PSI @ 100˚F)
34.5 bar @ 149˚C (500 PSI @ 300˚F)
TFE
20
Miniature Pilot
Plant Sensor (1)(7)
700-0209-002
6.9 bar @ 121˚C (100 PSI @ 250˚F)
0 bar @ 232˚C (0 PSI @ 450˚F)
316 SS and TFE
00
P
T 0
2
316SS collar
The Point™ Series
1.3
Introduction
Model Number (continued)
Sensing Element (continued from previous page)
Fly Ash Precipitators, Baghouse, and Economizers (1) (6)
Application
Sensing Element Pressure/Temperature
31 No hopper Installation
700-0029-001
0.1 bar @ 260˚C (2 PSI @ 500˚F)
32 Hopper Installation
up to 200mm (8 inches)
33 Hopper Installation
up to 250mm (10 inches)
34 Hopper Instalation
up to 330mm (13 inches)
35 Hopper Installation
up to 400mm (16 inches)
Wetted Parts
316SS and TFE (CS Inactive)
700-0029-002
0.1 bar @ 260˚C (2 PSI @ 500˚F)
316SS and TFE (CS Inactive)
700-0029-003
0.1 bar @ 260˚C (2 PSI @ 500˚F)
316SS and TFE (CS Inactive)
700-0029-004
0.1 bar @ 260˚C (2 PSI @ 500˚F)
316SS and TFE (CS Inactive)
700-0029-005
0.1 bar @ 260˚C (2 PSI @ 500˚F)
316SS and TFE (CS Inactive)
Mounting Type (See separate Mounting Chart for first three digits)
IL
CSL
IL
CSL
xxxA
152 mm (6")
51 mm (2")
xxxH
914 mm (36")
254 mm (10")
xxxB
305 mm (12")
51 mm (2")
xxxJ
914 mm (36")
0 mm (0")
xxxC
305 mm (12")
89 mm (3.5")
xxxK
1219 mm (48") 254 mm (10")
xxxD
457 mm (18")
51 mm (2")
xxxL
1524 mm (60") 254 mm (10")
xxxE
457 mm (18")
89 mm (3.5")
A1BX IL/CSL factory set for Fly Ash
xxxF
457 mm (18")
254 mm (10")
xxxZ
Other
xxxG
457 mm (18")
0 mm (0")
P
T 0
Notes:
(1) Available with remote electronics only
(2) Use A1P mounting option
(3) Choose from sanitary mounting options only
(4) Available with 0-inch CSL only
(5) Use P00X mounting option
3⁄4" NPT
3⁄4" NPT
3⁄4" NPT
1" NPT
1" NPT
C2B
C3B
C4B
1" TriClamp
11⁄2" TriClamp
2" TriClamp
316SS
Hastelloy C
PFA
316SS
Hastelloy C
Sanitary TriClamps
E01
EP1
EQ1
ER1
ES1
ET1
EU1
EV1
EW1
EX1
ANSI Flanges (cont.)
DIN Flanges (cont.)
NPT Threads
A1B
A1C
A1P
A2B
A2C
(6) Use A1B mounting option
(7) Use A8B mounting option (1⁄4-inch NPT)
(8) Choose from flange mounting only
(9) FM approved with remote electronics only
Not all mounting options available with all sensing
elements
316SS
316SS
316SS
DIN Flanges
25 mm 16bar
RF 316/316L SS
25 mm 40 bar
RF 316/316L SS
50 mm 16 bar
RF 316/316L SS
50 mm 40 bar
RF 316/316L SS
80 mm 16 bar
RF 316/316L SS
80 mm 40 bar
RF 316/316L SS
100 mm 16 bar
RF 316/316L SS
100 mm 40 bar RF 316/316L SS
150 mm 16 bar RF 316/316L SS
150 mm 40 bar RF 316/316L SS
E02
EP2
EQ2
ER2
ES2
ET2
EU2
EV2
EW2
EX2
25 mm
25 mm
50 mm
50 mm
80 mm
80 mm
100 mm
100 mm
150 mm
150 mm
16 bar
40 bar
16 bar
40 bar
16 bar
40 bar
16 bar
40 bar
16 bar
40 bar
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
ANSI Flanges
DA1
DB1
DC1
DD1
DE1
DF1
DG1
DH1
DI1
1"
11⁄2"
2"
21⁄2"
1"
11⁄2"
2"
21⁄2"
3"
150#
150#
150#
150#
300#
300#
300#
300#
150#
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
3
DJ1
DK1
DL1
DM1
DN1
DA2
DB2
DC2
DD2
DE2
DF2
DG2
DH2
DI2
DJ2
DK2
DL2
DM2
DN2
3"
4"
4"
6"
6"
1"
11⁄2"
2"
21⁄2"
1"
11⁄2"
2"
21⁄2"
3"
3"
4"
4"
6"
6"
300#
150#
300#
150#
300#
150#
150#
150#
150#
300#
300#
300#
300#
150#
300#
150#
300#
150#
300#
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF 316/316L SS
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
RF Carbon Steel
The Point™ Series
1.4
Introduction
Housing Dimensions
4.5"
(114mm)
6.5"
(165mm)
4.75"
(121mm)
Figure 1-3
Compartment Housing Detail
Equipotential Terminal
(CENELEC Systems)
4
The Point™ Series
SECTION 2:
2.1
Introduction
INSTALLATION
Unpacking
Carefully remove the contents of the shipping carton and
check each item against the packing list before destroying
any packing material. If there is any shortage or damage,
immediately report it to the factory at 1-800-527-6297 (US
and Canada) or + 215-674-1234 (International).
2.2
Mounting and Installation Guidelines
WARNING:
ThePoint equipment is rated explosion-proof. When
installing in explosion hazardous areas [rated
“potential hazardous” (EU) or “hazardous classified”
(USA)] observe all national and local regulations as well as
specifications in the certificate.
CAUTION:
ThePoint instrument must be powered after it is installed
in the application and with material below the sensing
element.
ThePoint instrument can be mounted vertically, horizontally,
or at an angle. Mounting location should be as free as
possible from vibration, corrosive atmospheres, and any
possibility of mechanical damage. Ambient temperatures at
electronics should be between -30 to 70ºC (-22 to 158ºF).
NOTE:
To reduce possibility of damage caused by water in conduit,
install drip loop and breather drain in conduit to purge any
accumulating moisture as shown in Figure 2-1.
Figure 2-1
Recommended
Conduit Connection
Cable fittings
supplied are weatherresistant.
They are NOT
certified as
explosionproof (XP) or
flameproof (d) unless
they are specifically
marked.
5
ThePoint™ Series
2.2
Installation
Mounting and Installation Guidelines (continued)
The Point RF
instrument is rated
Intrinsically Safe
(I.S.) when power is
provided from and
I.S. supply.
After system is installed and level is below sensing element,
apply power. ThePoint series instrument does not require
any calibration or setpoint adjustments and is ready to detect
change in level.
If properly installed, the green LED will light when power is
applied. Neither the green nor red LED should be flashing.
If either of the LEDs are flashing, refer to, Section 4,
Troubleshooting,
Mount sensing element per guidelines in Figure 2-2.
Best
Wall build-up
does not extend
past first
insulator.
Figure 2-2
Installation
Considerations
Cote-shield must
extend through
nozzle and wall
build-up by 2".
Best
No Nozzle
Wrong
Nozzle too long;
Cote-shield too short.
NOZZLE
Good
Long Nozzle
NOZZLE
Factory-supplied Cote-shield
extends through nozzle and
wall build-up.
• When installing ThePoint instrument, ambient
temperature at electronics must not exceed 70°C
(158°F).
• When installing flange-mounted sensing elements,
keep mating surfaces and bolts free of paint and
corrosion to ensure proper electrical contact with
vessel. Avoid using excessive amounts of TeflonTM tape
when installing threaded sensing elements.
• Locate sensing element to avoid enhancing
electrostatic discharge from process medium, as is
good practice with any thermowell, displacer, or
sampler. This includes correct bonding to tank or silo
wall.
6
ThePoint™ Series
2.2
Installation
Mounting and Installation Guidelines (continued)
• If installation area is rated explosion-proof and
requires conduit seal fittings, they should be used in
accordance with company standards and local codes.
• Mounting sensing element inside a pipe is not
recommended.
• Do not mount a Cote-Shield sensing element through a
nozzle that exceeds length of first insulator.
• Ensure that there are no obstructions or agitator
blades to interfere with sensing element.
• Rigid sensing elements can be mounted at any angle.
2.3
Input Wiring
WARNING:
If ThePoint instrument is located in a hazardous
environment, do not open enclosure cover or make/break any
electrical connections without first disconnecting electrical
power at the source. Ensure that wiring, electrical fittings,
and conduit connections conform to electrical codes for the
specific location and hazard level.
Figure 2-3
Input Wiring
1
2
3
G
L1
L2
GND
7
Loop
13-30Vdc
ThePoint™ Series
2.4
Installation
Output and LED Status
There are two status LEDs located on top of the Electronic
Unit. The green LED is used to indicate that the unit has
power. The red LED is used to indicate the output condition.
See Figure 2-4.
Figure 2-4
Output/LED Status
Tank Condition
LED Output Status
Power
GREEN
RED
LED
On
LED
Off
Power
GREEN
RED
LED
On
LED
On
Power
GREEN
RED
LED
On
LED
On
Power
GREEN
RED
LED
On
LED
Off
High Level FailSafe
Tank Empty
High Level FailSafe
Tank Full
Low Level FailSafe
Tank Empty
Low Level FailSafe
Tank Full
8
ThePoint™ Series
2.5
Installation
Electronic Unit
Remove housing lid to access status LEDs, time delay
adjustment, and configuration jumpers. See Figure 2-5.
FAILSAFE JUMPER
Right�= High Level
Left� = Low Level
TIME DELAY
ADJUSTMENT
0-60 SEC.
TIME DELAY JUMPER
Right�= Forward Acting
Left� = Reverse Acting
RED LED - ALARM
OUTPUT
Right = 8mA Alarm/16 mA Normal
Left = 8mA Normal/16 mA Alarm
Figure 2-5
Electronic Unit
Adjustments
GREEN LED - POWER
VIEW
RESET/RECAL BUTTON
NOTE: Do NOT
push the Recal button
without first ensuring
that the material being
measured is below the
sensing element.
2.5.1 Time Delay
Time delay adjustment is used to avoid an oscillating output
due to agitation or waves in the vessel. The time delay
adjustment can be field adjusted from 0 to 60 seconds. Unit is
shipped with time delay setting at zero seconds.
2.5.2 Time Delay Action
Time delay action describes whether the output is delayed
from going into the alarm state or recovering from an alarm
state.
• FWD: Delays system from coming out of alarm.
• REV: Delays system from going into alarm.
• The instrument is supplied with time delay action set
in forward mode (FWD) position.
• Time delay action is field-selectable using a jumper
located on top of Electronic Unit. See Figure 2-5.
2.5.3 Current Output Assignment
The output current can be configured using the jumpers as
follows:
• Jumper on pin #1 and #2 creates:
8mA - Normal
16mA - Alarm
• Jumper on pin #2 and #3 creates:
8mA - Alarm
16mA - Normal
9
ThePoint™ Series
Installation
2.5.4 Failsafe
Failsafe describes the level condition that causes the
transmitter to go into alarm.
• High Level FailSafe (HLFS) is the condition when the
probe is covered, the unit goes into alarm.
• Low Level FailSafe (LLFS) is the condition when the
probe is uncovered, the unit goes into alarm.
• Instrument is supplied with failsafe jumper set in high
level (HLFS) position.
• Failsafe is field-selectable using a jumper located on top
of the Electronic Unit. See Figure 2-5.
2.5.5 RECAL
CAUTION:
ThePoint instrument must be powered after it is installed in
the application and with material below the sensing element.
If system is powered on the bench prior to installation, or
moved from one tank to another, RECAL is necessary to
allow software to capture the air capacitance generated by
sensing element in tank.
Merely press RECAL (shown in Figure 2-5). Both LED's
flash for 60 seconds before reset occurs. [Remove power from
the system while the LED's are flashing and recalibration
will occur immediately].
NOTE:
Do Not Push the Recal Button without first ensuring
that the material being measured is below the sensing
element.
The system is now ready for installation.
10
ThePoint™ Series
2.6
Installation
Spark Protection
Applications involving insulating granulars and insulating
liquids may produce a static discharge that can damage the
electronics. The RF series instrument is supplied with
integral heavy-duty spark protection to prevent static
discharges from damaging the electronic circuits.
2.7
Sensing Element Connection
The sensing element connects to rear side of circuit board
and is factory-installed. If sensing element must be removed
from housing due to mounting requirements during
installation, or because a different insertion length is
discovered to be needed, use these following steps:
MODEL
NUMBER
LABEL
Figure 2-6
Sensing Element
Connection
(Integral Housing)
11
ThePoint™ Series
2.7
Installation
Sensing Element Connection (Continued)
To remove sensing element:
Disconnecting
sensing element froma. Remove power from system.
integrally mounted
transmitter is not b. Remove lid from housing.
usually necessary.
c. Remove two retaining screws that hold the electronic unit in
place.
d. Remove Electronic Unit by gently pulling it up and out of
its housing [it unplugs from board-mounted interconnect
receptacle].
e. Disconnect cable connector (wire harness on remote units)
from circuit board in bottom of housing.
f. Remove sensing element by rotating it counterclockwise.
To reinstall sensing element:
a. Insert cable connector (wire harness on remote units) into
housing through bottom process entry.
b. Apply thread sealant to 3⁄4-inch NPT threads on sensing
element.
c. Install sensing element by threading it clockwise into
housing.
e. Connect cable connector (wire harness on remote units) to
circuit board at bottom of housing.
f. Carefully align the four pins and place Electronic Unit into
housing, taking care that board-mounted connector is reseated into interconnect receptacle.
g. Install the two retaining screws.
h. Install lid on housing.
i. Apply power.
12
ThePoint™ Series
2.7
Installation
Sensing Element Connection (Continued)
For ThePoint instruments mounted remotely from sensing
element, cable connections from sensing element to
Electronic Unit are made to terminals beneath the Electronic
Unit. See Figure 2-7.
EQUIPOTENTIAL
TERMINAL
COTE-SHIELD
(RED)
GROUND
(GREEN)
CENTER WIRE
(BLUE)
+
REMOVE
ELECTRONIC
UNIT TO ACCESS
SENSOR HARNESS
(2.5mm Hex-Head Screws)
Cable Fitting
(M20 AdapterOptional)
SHIELD WIRE MUST BE CLIPPED BY USER
NOTE:
CLIPPED SHIELD WIRE MUST NOT TOUCH
CONDULET HOUSING
NOTICE
Coaxial or Triaxial Cable
Figure 2-7
Sensing Element Connection
(Remote Housing)
13
ThePoint™ Series
SECTION 3:
Troubleshooting
TROUBLESHOOTING
WARNING:
If ThePoint instrument is located in a hazardous
environment, do not open enclosure cover or make/break any
electrical connections without first disconnecting electrical
power at the source. Ensure that wiring, electrical fittings,
and conduit connections conform to electrical codes for the
specific location and hazard level.
3.1
Testing Sensing Element
To test the sensing element, first disconnect the integral
cable as shown in Figure 3-1.
CAP & ELECTRONIC UNIT
REMOVED FOR ACCESS
TO EXPOSE INTEGRAL CABLE
REMOVE CABLE TO EXPOSE
TOP OF SENSING ELEMENT
Figure 3-1
Testing Sensing
Element
Expect the following measurements:
For Three-terminal Probes:
under sensor side
of integral cable...
When tank level is known to be below the sensor,
minimum acceptable values are:
Center Wire - Ground
Center Wire - Shield
Shield - Ground
Center Wire
Shield
1000 Ohms.
600 Ohms.
300 Ohms.
If the readings are less than the minimum
acceptable values:
1. Check to see if tank is full, or if a severe
coating is present.
2. Clean sensor and re-measure the sensor
resistances.
Ground
Note:
Low resistance readings are acceptable if the
sensor is covered with a conductive liquid. Also,
low resistance readings can be the result of
material lodging in a long mounting nozzle. Refer
to Figure 2-2.
Measured Resistance (Sensor dry and clean):
Ohms
Center Wire - Ground
Center Wire - Shield
Ohms
Ohms
Shield - Ground
Note:
A reading of zero (0) Ohms usually indicates a
metal-to-metal short circuit. Check for contact
with tank wall, mounting nozzle, or other tank
structure.
Resistance readings must be taken
using an analog ohmeter set to Rx1000 scale.
15
ThePoint™ Series
3.2
Installation
Testing Electronic Unit
Use the following steps to test the electronic unit:
1. Be sure environment is safe before removing lid from
housing.
2. Observe failsafe jumper on circuit board on top of
electronic unit (shown in Figure 2-5). Move jumper
from current setting to alternate setting [HLFS to
LLFS or vice versa]. Output should change state.
3. If it is possible to access sensing element (with
material below sensing element), or remove ThePoint
from vessel, touch tip of sensing element with your
finger, while holding any bare metal portion of
instrument housing with other hand. Output should
change state.
4. If ThePoint changes state while moving jumper, but
not while touching sensing element, in most cases,
integral cable is faulty.
Refer to Section 3.5 Testing Integral Cable.
5. If ThePoint is stuck in one state:
a. Remove power.
b. Disconnect coax cable that joins sensing element to
electronic unit.
Refer to Section 2.7 Sensing Element Connection.
c. Apply power.
d. Repeat step 2.
e. If ThePoint changes state with sensing element
disconnected, in most cases, sensing element is faulty.
Refer to Section 3.1 Testing Sensing Element.
6. If there was no Change of state in either step 2 or step
3 and unit appears dead:
a. Remove and then reapply power.
b. Press reset (shown in Figure 2-5).
c. Observe the two LEDs flashing for about 60 seconds.
d. Green LED should be lit after 60 seconds.
e. Touch sensing element with your finger.
f. Output should change state. If so, circuit board is
working properly.
g. Reinstall instrument and press reset.
7. If ThePoint fails all of above tests, in most cases
instrument is faulty. Use replacement electronic unit
to determine the fault. Consult factory.
16
ThePoint™ Series
Troubleshooting
3.3
Over Range
3.4
Under Range
3.5
Testing Integral Cable
If the Green LED is flashing, the instrument has detected
the uncovered sensing element capacitance exceeds the limits
of the transmitter. Consult factory instructions.
If the Red LED is flashing, the instrument has detected the
sensing element capacitance is too small. Consult factory
for sensing element capacitor values.
Ohmmeter
CAP & ELECTRONIC UNIT
REMOVED FOR ACCESS
TO EXPOSE INTEGRAL CABLE
REMOVE CABLE TO EXPOSE
TOP OF SENSING ELEMENT
Shield
Center
Wire
Center
Wire
Shield
Figure 3-2
Testing Integral Cable
Ohmmeter
Shield
Shield
Center
Wire
Center
Wire
Ohmmeter
Shield
Center
Wire
17
Shield
Center
Wire
ThePoint™ Series
3.6
Troubleshooting
Testing Remote Cable
CHECK FOR SHORTS
OHMMETER
8
CENTER - SHIELD
SHIELD - GROUND
8 8 8
CENTER - GROUND
0
OHMS
OHMS
OHMS
Correct Reading = OPEN Circuit
Figure 3-3
Testing Remote Cable
No Connection
CHECK FOR CONTINUITY
OHMMETER
CENTER - GROUND
8
0
CENTER - SHIELD
0
0
0
OHMS
OHMS
OHMS
SHIELD - GROUND
Shorted wires should read 0 ohms
Short out two conductors
3.7
Factory Assistance
AMETEK Drexelbrook can answer any questions about
ThePoint series instrument. Call Customer Service at
1-800-553-9092 (US and Canada) or +1- 215-674-1234
(International).
If you require assistance and attempts to locate the problem
have failed:
• Contact your local Drexelbrook representative,
• Call the Service department toll-free at 1-800527-6297 US and Canada) or +1-215-674-1234
(International),
• FAX the Service department at 215-443-5117, or
• E-Mail to [email protected]
Please provide the following information:
•
•
•
•
•
•
•
•
•
Instrument Model Number
Sensing Element Model Number and Length
Original Purchase Order Number
Material being measured
Temperature
Pressure
Agitation
Brief description of the problem
Checkout procedures that have failed
18
ThePoint™ Series
Troubleshooting
3.8
Field Service
3.9
Customer Training
Trained field servicemen are available on a time-plusexpense basis to assist in start-ups, diagnosing difficult
application problems, or in-plant training of personnel.
Contact the service department for further details.
Periodically, AMETEK Drexelbrook instrument training
seminars for customers are held at the factory. These
sessions are guided by Drexelbrook engineers and specialists,
and provide detailed information on all aspects of level
measurement, including theory and practice of instrument
operation. For more information write to: AMETEK
Drexelbrook, Communications/ Training Group or call 215674-1234.
3.10 Equipment Return
In order to provide the best service, any equipment being
returned for repair or credit must be pre-approved by the
factory.
In many applications, sensing elements are exposed to
hazardous materials.
• OSHA mandates that our employees be informed and
protected from hazardous chemicals.
• Material Safety Data Sheets (MSDS) listing the
hazardous materials to which the sensing element has
been exposed MUST accompany any repair.
• It is your responsibility to fully disclose all chemicals
and decontaminate the sensing element.
To obtain a return authorization (RA#), contact the Service
department at 1-800-527-6297 (US and Canada) or +1-215674-1234 (International).
Please provide the following information:
•
•
•
•
•
•
•
•
Model Number of Return Equipment
Serial Number
Original Purchase Order Number
Process Materials to which equipment has been
exposed
MSDS sheets for any hazardous materials
Billing Address
Shipping Address
Purchase Order Number for Repairs
Please include a purchase order even if the repair is under
warranty. If repair is covered under warranty, you will not be
charged.
Ship equipment freight prepaid to:
Ametek-drexelbrook.
205 Keith Valley Road
Horsham, Pa 19044-1499
COD shipments will not be accepted.
19
ThePoint™ Series
SECTION 4:
Specifications
SPECIFICATIONS
Technology:
RF/ Capacitance
Calibration:
None
Modes of Operation:
High and Low level
Repeatability:
2mm (0.08 inch)
conductive liquids
Response Time:
less than 1 second
Time Delay:
0 to 60 seconds forward
and reverse acting
Ambient Electronics:
-40 to 70°C (-40 to 158°F)
Storage Temperature:
-40 to 85°C (-40 to 185°F)
Indicators:
LEDs
Green Power
Red Alarm
Power supply:
13 to 30 Vdc
Power consumption:
1 watt maximum
Loop Current:
8mA Alarm, 16 mA Normal
or (Field-Selectable)
8mA Normal, 16 mA Alarm
Housing (electronics):
Powder-coated aluminum with
two cable entries
Cable entry:
M20 x 1.5 or 3⁄4-inch NPT
Ingress Protection:
IP66 NEMA 4X
Approvals Pending:
21
Pending
ThePoint™ Series
SECTION 5:
Approvals Available
APPROVALS AVAILABLE
Equipment Ratings
Intrinsically Safe for use in Class I, II, and, III, Division 1,
Groups A, B, C, D, E, F and G in accordance with Entity
requirements and Control Drawing 420-0004-220-CD;
Nonincendive for use in Class I, Division 2, Groups A, B, C,
and D; Suitable for use in Class II and III, Division 2, Groups
F and G; Explosionproof for use in Class I, Division 1, Groups
A, B, C, and D; Dust-Ignition proof for Class II and III,
Division 1, Groups E, F, and G; Indoor and Outdoor, (Type 4,
4X, IP66) Hazardous (Classified) locations with Intrinsically
Safe Connections to Class I, II, and III, Division 1, Groups
A, B, C, D, E, F, and G Hazardous (Classified) Locations in
accordance with Entity requirements and Control Drawing
420-0004-220-CD.
Ui = 30U
Ii = 140mA
Pi = 1w
Ci = 0
Li = 159uH
205 KEITH VALLEY RD.
HORSHAM, PA 19044 U.S.A.
+1-215-674-1234
WWW.DREXELBROOK.COM
TM PXTX 2 -INTEGRAL SERIES
ThePoint
MODEL NUMBER LOCATED
INSIDE HOUSING
SERIAL NO.: ACR-XXXXXX
INPUT VOLTAGE: 13-30 VDC
POWER: 1W
ENCLOSURE TYPE: IP 66
-300 C <_ Tamb <_ +700C
YEAR OF MANUFACTURE: SEE INSIDE
270-0101-837
ATEX - NEMKO 04ATEX1233X
-30°C <
_ T Amb <
_ +70°C
Ui = 30V
Ii = 140mA
Pi = 1W
Ci = 0
Li = 159uH
II 1 GD EEx ia IIC T5,...T2
T900C NEMKO 04 ATEX 1233X
INSTALL PER 420-0004-221-CD
Install Per 420-0004-221-CD
0344
Ui = 30U
Ii = 140mA
Pi = 1w
Ci = 0
Li = 159uH
DO NOT OPEN WHEN AN EXPLOSIVE
WARNING GAS/DUST
ATMOSPHERE MAY BE PRESENT
REFERENCE INSTRUCTION MANUAL FOR LIVE
MAINTENANCE PROCEDURES
POSSIBLE SHOCK HAZARD WITH COVER REMOVED
205 KEITH VALLEY RD.
HORSHAM, PA 19044 U.S.A.
+1-215-674-1234
WWW.DREXELBROOK.COM
TM PXTX 2 -REMOTE SERIES
MODEL NUMBER LOCATED
INSIDE HOUSING
SERIAL NO.: ACS-XXXXXX
INPUT VOLTAGE: 13-30 VDC
POWER: 1W
ENCLOSURE TYPE: IP 66
-300 C <_ Tamb <_ +700C
YEAR OF MANUFACTURE: SEE INSIDE
270-0101-840
DREXELBROOK
ThePoint
II 1 GD EEx ia IIC
T90°C
T5...T2
Ui = 30V
Ii = 140mA
Pi = 1W
Ci = 0
Li = 159uH
II 1 GD EEx ia IIC T5, 900C
0344
NEMKO 04 ATEX 1233X
INSTALL PER 420-0004-221-CD
DO NOT OPEN WHEN AN EXPLOSIVE
WARNING GAS/DUST
ATMOSPHERE MAY BE PRESENT
REFERENCE INSTRUCTION MANUAL FOR LIVE
MAINTENANCE PROCEDURES
POSSIBLE SHOCK HAZARD WITH COVER REMOVED
DREXELBROOK
23
0344
ThePoint™ Series
SECTION 6:
6.1
Control Drawings
CONTROL DRAWINGS
FM Control Drawings
25
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
26
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
27
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
28
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
29
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
30
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
31
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
32
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
33
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
34
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
35
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
36
ThePoint™ Series
6.1
Control Drawings
FM Control Drawings (Continued)
37
ThePoint™ Series
6.2
Control Drawings
ATEX Control Drawings
39
ThePoint™ Series
6.2
Control Drawings
ATEX Control Drawings (Continued)
40
ThePoint™ Series
6.2
Control Drawings
ATEX Control Drawings (Continued)
41
ThePoint™ Series
6.2
Control Drawings
ATEX Control Drawings (Continued)
42
ThePoint™ Series
6.2
Control Drawings
ATEX Control Drawings (Continued)
43
ThePoint™ Series
Appendix A
Shortening or Lengthening Sensing Element
CAUTION:
The insulation length of either Flush Sensing Elements
or Insulated Sensing Elements can Not be changed.
Cable Sensing Elements can only be shortened.
Instructions are included with each unit.
The Need
Sometimes your application calls for probe lengths
other than the standard 18-inch or longer insertion
lengths supplied. Shortening the sensing element is
quite simple and can be done in the field. Lengthening
the sensing element, however, is more difficult because
the metal rod, typically 304SS or 316SS, must be
welded.
Before making any Adjustments:
1.
2.
3.
4.
5.
Insulators
Note:
Cote-Shield
element must
NEVER be
modified.
Read the following instructions thoroughly.
Remove power.
Disconnect the electronics.
Protect electronics from any static discharge.
Protect electronics from any heat.
Shortening
The bare metal center rod of the sensing element can be
shortened with a hacksaw. Be careful not to cut either
of the two insulators. See Figure on this page.
In applications using conductive or water-based
materials, shortening is not a problem. Leave a
minimum bare metal center rod length of two (2)inches.
For dry granular materials, such as powder, sand, corn,
clinker, etc., you must leave a minimum bare metal
center rod length of eight (8)inches. Consult the factory
Insertion Length
before shortening beyond this point.
(18" or 36" std.)
Lengthening
Center Rod
Note:
Any changes to
probe length after
calibration requires
recalibration to
ensure proper
operation.
To lengthen the sensing element,an extension rod can
be welded onto the end of the bare metal center rod.
Make sure that the extension rod is the same metal as
the sensing element.
An alternate option is to add a pipe coupling and a
section of metal pipe after threading the tip of the
sensing element. In this case, the metal pipe need not
be identical to the metal of the sensing element.
A1
An ISO 9001 Certified Company
205 Keith Valley Road, Horsham, PA 19044
US and Canada:
1-800-553-9092
International:
+1 215-674-1234
24-Hour Service:
+1 215-527-6297
Fax:
+1 215-674-2731
E-mail:
[email protected]
Website:
www.drexelbrook.com