Calibration Menu - Dräger Regard 3900 Instructions For Use Manual

Calibration menu
A.4
Calibration
Module 1
Channel 1
Channel 2
Channel 3
Channel 4
Module 2
Channel 5
.
.
.
Channel 8
Module 3
Module 4
Use the calibration menu to calibrate the controller for all channels during initial installation and then when required during
maintenance or repair of the controller or gas detection system. Refer also to the remote sensor transmitter operating manual
for transmitter calibration instructions.
In the chart above, the Module 1 menu is expanded to show the zero and span calibration menus for Channel 1. Depending
on the number of modules configured as input modules, Channels 5 to 16 would be available on Modules 2, 3 and 4. The chart
shows Module 2 configured as an input module.
Tag – Displays the channel tag (read only).
Zero calibration – Before calibrating the channel, it is mandatory to calibrate the transmitter to ensure that the transmitter output
signal is 4 mA for a zero gas reading.
1. Select Zero calibration for the relevant channel.
2. Select Calibrate channel.
○ When the success message appears, exit the menu to save the calibration.
○ If a failure message appears, refer to the troubleshooting information (see Section 7 on Page 26).
Span calibration – Calibrate the span by either applying calibration gas to the remote sensor transmitter, or by controlling the
transmitter output using the transmitter controls to simulate a gas signal.
Applying a calibration gas
1. Use a calibration adaptor to apply calibration gas to the transmitter. Use a concentration between 40% and 90% of the
measuring range, at the flow rate in the transmitter operating manual.
2. Allow the controller display screen reading to settle for 2 to 3 minutes.
3. Navigate to the relevant channel calibration menu.
4. Select Span calibration and then Gas concentration.
5. Enter the concentration of the calibration gas, and then select Calibrate channel.
○ When the success message appears, exit the menu to save the calibration.
○ If a failure message appears, refer to the troubleshooting information (see Section 7 on Page 26).
Controlling the transmitter output
1. Set the signal output of the transmitter between 10 mA and 20 mA.
2. Navigate to the relevant channel calibration menu.
3. Select Span calibration and then Signal mA.
4. Enter the transmitter signal, and then select Calibrate channel.
○ When the success message appears, exit the menu to save the calibration.
○ If a failure message appears, refer to the troubleshooting information (see Section 7 on Page 26).
Regard 3900 Series
Tag
Zero calibration
Span calibration
Gas concentration
Signal mA
Configuring and calibrating a Regard 3920 controller
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