99774 PBI SGI-3 OXI-3 UK.indd

O N
T H E
Q U A L I T Y
L I N E
Oxygen indicators
OXYGEN
MEASURING
- for portable and
on-line monitoring
Do not print for distribution, only for e-mail use!
COPYRIGHT 
O N
T H E
Q U A L I T Y
L I N E
Portable and sturdy all purpose
oxygen indicators with high accuracy ceramic sensor
SGI-3 and OXI-3 are a line of digitised, easy-to-use gas indicators
for measuring oxygen with a fast
responding, ceramic, high accuracy
sensor.
These analysers feature oxygen
concentration alarm setting with
buzzer and 0/4 - 20 mA signal out,
built-in pump and self-diagnostics
of important functional parameters.
The SGI/OXI series have been
on the market for more than a
decade, but now this highly popular
gas analyser is re-launched in a
state-of-the-art digital concept, but
without changing the sturdy design
and the simplicity in use.
These analysers have defined the
standard for O2 monitoring in arc
welding processes of stainless
steel, titanium etc., but also within
many other areas where sturdiness, simplicity in use combined
with a fast and accurate analysis
and a reasonable price level, are
regarded as important.
SGI-3 - portable - measures oxygen from 5000 ppm to 1 ppm in
inert gases and CO2 from 500 to
10 ppm in formier gas with max.
10% hydrogen.
ADVANTAGES
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Large measuring range
Ceramic sensor with high accuracy and fast response time
Digitised analyser
Self-diagnostics with function alarm
Selectable pre-programmed calibration settings for inert gas
and blends of 2%, 5% and 10% H2
● Easy-to-read display
● Signal out: 0/4 - 20 mA or 0/2 - 10 volt
● Signal in (24 v.) for automatic start-stop of sampling for on-line use
Notice: OXI-3.1 is without sample pump and display.
APPLICATIONS
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Welding - inert gases and formier gases
Fermentation (i.e. checking CO2 purity)
Soldering reflow ovens
Incubators
Nitrogen generators
Semiconductor processing
Check of industrial gas installations
OXI-3 - portable - measures oxygen from 20,9% to 1 ppm in inert
gases and CO2.
OXI-3.1 - on-line - measures oxygen from 1 ppm to 100% O2 in
inert gases and CO2. User interface via external communication.
O N
T H E
Q U A L I T Y
L I N E
WELDING USING SGI-3:
Welding without oxidation: Welding samples indicating the oxidation process under various O2 levels.
1000 ppm O2
60 ppm O2
Oxidation of welds occurs during the
welding process if the oxygen content is too high and the temperature
of the metal is above a certain level
(see the inserted welding samples).
The oxygen indicator, SGI-3, is a
powerful tool to secure oxidation
free welding. Insert the measuring
tube in the stainless steel pipe - or
with a thin probe through the pipe
gab - supply the back shielding gas.
The SGI-3 will now monitor and
display the purging process, as it
continuously samples from the pipe.
When the oxygen level is correct,
(the alarm goes off) and the welding
process can start. The oxygen monitoring should continue during the
welding process to allow the SGI-3
to immediately alert the operator if
oxygen level should indcrease above
the set level.
The advantages using oxygen
monitoring during welding are
obvious:
- The oxygen level can be monitored precisely and with ease.
- The operator knows exactly
when to start welding. No extra
purging is necessary - no extra
waiting time.
- Later bad experiences with
oxidated welds - rework and
possible damage problems are efficiently avoided.
Good welding purge dams optimise
the purging process further and
should always feature fittings for
easy mounting of the analyser’s
sampling tube.
20 ppm O2
1 ppm O2
USER INTERFACE FOR SGI-3/OXI-3
The measured oxygen content is displayed by the 48 red LEDs which light
up within a reverse logarithmic characteristic. This makes the view of the
measuring process very easy, also on
a rather long distance. In case of an O2
alarm or a system failure alarm, the
display will flash.
Choose freely between INERT gas or
any FORMIER gas blending up to 10%
H2 (choose one of the predefined
values, 2, 5 or 10% H2 figures close to
the one actually used).
The alarm level is very easy to set:
Push the buttons for alarms and the
red display will light up, indicating the
set alarm level.
By pushing -/+ buttons, the
alarm level can be adjusted
to a new setting.
FREE VIDEO! Call your distributor or call PBI-Dansensor directly and
we shall send you this very popular and instructive video about gas
welding and purging procedures.
SPECIFICATIONS:
OXI-3
A general all
purpose indicator
for measuring O2
in all inert gases
and CO2.
OXI-3.1
Especially designed
for process control
where no display
is needed
Ceramic oxygen sensor, response time 50 ms
User-defined settings. Alarm conditions:
A display will flash and an acoustic alarm
will be activated
System alarm:
LED flash
Sensor temp.:
727° C (1000 K)
Heating up time: 20 min.
Sampling:
Built-in pump
Measuring range: Inert gas: 5000 - 1 ppm
5%, 8%, 10% H2 in formier gas: 500 - 10 ppm
Display:
48 red LEDs, non-linear
Accuracy:
Better than +/- 1 LED
Output signal:
0/4 - 20 mA or 0/2 - 10 volt, logarithmic
OXI-3:
Sensor:
O2 alarm:
Ceramic oxygen sensor, response time 50 ms
User-defined settings. Alarm conditions:
A display will flash and an acoustic alarm
will be activated
System alarm:
LED flash
Sensor temp.:
727° C (1000 K)
Heating up time: 20 min.
Sampling:
Built-in pump
Measuring range: Inert gas: 20,9% - 1 ppm
Display:
48 red LEDs, non-linear
Accuracy:
Better than +/- 1 LED
Output signal:
0/4 - 20 mA or 0/2 - 10 volt, logarithmic
OXI- 3.1:
Sensor:
System alarm:
Sensor temp.:
Heating up time:
Sampling:
Measuring range:
Display:
Accuracy:
Output signal:
Ceramic oxygen sensor, response time 50 ms
LED flash
727° C (1000 K)
20 min.
Pressurised (no pump) or optional built-in pump
1 ppm - 100% O2, according to order
No display
Better than +/- 1% of reading
0/4 - 20 mA or 0/2 - 10 volt, linear
Generally:
System response time:
Depending upon sample hose length
(1 meter: from 20,9% to 10 ppm in 2.5 min.)
Voltage:
230 VAC or 115 VAC, both +/- 10%, 50/60 Hz
Weight:
6 KG (including crating, 9.7 KG)
Size:
255 x 250 x 180 mm
(including crating: 300 x 300 x 380) (HxWxD)
Distributor:
PBI-Dansensor A/S . Rønnedevej 18 . DK - 4100 Ringsted . Denmark . Tel.: +45 57 66 00 88 . Fax +45 57 66 00 99
E-mail: [email protected] . website: www.pbi-dansensor.com
Copyright © - Specifications subject to change without notice - 99774 MODPOL
SGI-3
Especially designed
for welding process where H2 is
used as an oxygen
reducing gas, and
for similar process.
SGI-3:
Sensor:
O2 alarm: