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Salwico ST200 & Salwico
ST600EX
CGD50/500
Calibration Instruction
Consilium Building Safety AB
Phone: +46 31 28 59 40
Fax: +46 31 28 85 95
E-mail: [email protected]
The contents of this document are subject to revision without notice
due to continued progress in methodology, design and
manufacturing. Consilium Building Safety AB assumes no legal
responsibility for any error or damage resulting from the usage of
this document.
April 2019
Document no. 5103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C
Part no. 5103026
© Copyright 2019, Consilium Building Safety AB
Calibration Instruction
1Calibration Instruction for Salwico ST200 and
Salwico ST600EX
5103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C 1
1 Calibration Instruction for Salwico ST200
and Salwico ST600EX
1.1 Preliminaries
This instructions applies to the following products:
Figure 1. Salwico ST200. Part No. 4470
Figure 2. Salwico ST600EX. Part No. 4460.
NOTE!
It is recommended to periodically carry out a gas response check on the gas detector
to ensure correct operation.
The ST200 and ST600EX detectors for 0-100% LEL Hydrocarbon can be
calibrated and the out-signal adjusted.
Hint!
Reading at 0% is 4.0 mA, and full range 100% LEL is 20 mA.
Tools
Tools required for this operation are:
1Calibration Instruction for Salwico ST200 and
Salwico ST600EX Calibration Instruction
25103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C
•A small terminal screw driver, with thin straight tip.
•A multimeter with mA (milliampere) capacity.
1.2 Prerequisites
1 Use the arrow keys on the control panel to
manoeuvre through the different menus.
Press the right arrow key to access the
menu tree.
2 Scroll to 4 Gas Detectors and press
Continue.
3 Scroll to the detector that should be
calibrated and press Options.
4 Scroll to 3 Disable and choose Continue.
5 You have to confirm the disablement before
you can proceed.
Press Disable to continue.
6 You will get a confirmation message that
the detector has been disabled.
Press Close to continue.
7 If the ambient air is NOT considered
reliable to use to set the ZERO, apply a
clean source of zero gas or compressed air.
8NOTE!
For the following steps in the
zero calibration instruction
proceed to the Salwico ST200 or
ST600EX detector.
Calibration Instruction
1Calibration Instruction for Salwico ST200 and
Salwico ST600EX
5103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C 3
9 Connect the Flowcap to the sensor head as
shown in the picture.
Connect the measuring tips of the
multimeter to the test points in the detector.
Plus is red, minus is black.
Hint!
Picture shows a ST200. The
ST600EX has identical
connections and calibration, only
fitted in an EX proof housing.
1.3 Calibrating the sensor (Zero calibration)
Before gas Calibration is made, a Zero-adjustment should be made.
1 Connect the multimeter to the two test
points as shown in the picture.
2 The multimeter readout should be 4.0 mA
with normal air / zero gas exposed to the
sensor.
Adjust to this reading with the ‘Zero’
potentiometer, marked in red. (See where
the screwdriver is placed in the picture.)
1.4 Calibrating the sensor (Span calibration with
test gas)
NOTE!
For the ST600EX the procedure is identical as below, but note that the EX-Seal is
void if the unit is open, so necessary precautions in the working area may be
required.
Check on site what is applicable before the unit is opened up.
1Calibration Instruction for Salwico ST200 and
Salwico ST600EX Calibration Instruction
45103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C
1 Connect the suitable test-gas for the
detector, normally a 50% LEL mixture.
Recommendations:
The ST200 and ST600EX can
only respond to gas in normal
Air. This means that
Calibration gas in N2 /
Nitrogen are not suited for
these detectors.
On LNG vessels a 50% LEL
gas of CH4 Methane in air is
to be used.
For LPGs and Tankers we
normally recommend a 50%
LEL C3H8 Propane gas in air.
2 Adjust the reading to 12.0 mA using the
‘SPAN’ pot. See picture.
Figure 3. Detector ST200
Figure 4. Detector ST600EX
3 If the readout of 12.0 mA cannot be
reached even with the “SPAN” pot in the
bottom position, the sensor cell must be
replaced to a new one. Consilium
Replacement article number for ST200 and
ST600EX detectors is 004460-S.
NOTE!
When a new sensor is fitted, a
new Zero adjustment as well as
span calibration should be made.
Catalytic detectors have a
limited lifespan of up to 5
years, but can be ‘poisoned’
by silicones, salt air, very
humid air, etc. and their
output will be reduced.
1.5 Reconnecting disabled detectors
All disablements in the CGD50/500 gas detection system are presented in the
disablements list. Any enablement is made from this list.
Calibration Instruction
1Calibration Instruction for Salwico ST200 and
Salwico ST600EX
5103026_Salwico ST200 & Salwico ST600EX_Calibration Instruction_I0_EN_2019_C 5
1 Scroll to Menu » Disablements.
2 Choose the detector you just disabled and press Options.
3 Select Reconnect and press Continue.
FOR ALL THOSE MOMENTS
WHEN SAFETY MATTERS
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