Doc Ref: SL-068 v1.35 pg 15
The Cal sequence operates as follows:
1. Press the UP button until the LED’s go out, release the UP button.
2. Select the module address that requires calibration by using the up/down buttons. With the
correct module input number displayed press and hold the UP button. Release when the LED’s
go out.
3. Use the UP/DOWN buttons to select the Right LED for Cal mode. With the right LED on, press
and hold the UP button. Release when the LED’s go out.
4. Cal Mode is selected. The display will now show a pre-calibration reading. Ensure cal gas is
flowing to the detector and allow the reading to stabilise.
5. Press and hold the DOWN button until the LED’s go out to initialise the calibration. The display
will now show a post cal reading, check the reading is in tolerance
6. Each LED will blink in series to indicate the update and the module will go back to normal
operation.
NOTE: There is no ABORT option so before selecting to calibrate ensure all necessary
equipment as previously indicated is available.
UP
UP
UP
UP
DOWN
DOWN
DOWN
DOWN
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
S YS T E M S TAT U S
S YS T E M S TAT U S
S YS T E M S TAT U S
S YS T E M S TAT U S
ch=pell
ch=1
mode
cal
post cal
50.0%
Pre-Cal
47.0%
Detector Cal Sequence
The module PCB has four inputs which can be enabled
and calibrated locally using the equipment set previously
described. When the module PCB is powered and as
described in the indications section, the LED’s will indicate
which options are enabled .
Option 1: Flammable Gas using Pellistor
Option 2: IR/PID/Toxic/Oxygen Detector
OPtion 3: Analogue 4-20mA Input 1
OPtion 4: Analogue 4-20mA Input 2
UP Button
DOWN Button
1 2 4 8 16
Module
Binary
Inputs
