Step
Procedure
Reference
7
Connect the potential equalization.
see "Connecting the potential equalization
on the SR-unit", page 45
8
Electrical connection of SR-unit.
see "Electrical connection of SR-unit",
page 44
9
Switch the measuring system on.
see "Optical fine alignment of the sender/
receiver unit ", page 54
see "Starting measuring operation",
page 56
10
Optional: Fit the weatherproof cover.
see "Installing the weatherproof cover ",
page 55
7.5
Zero adjust
Prerequisite
1.
Clean ambient atmosphere, free from sample gas, protected against weather.
2.
Bracket for the measuring probe
NOTICE
Position the measuring probe bracket within reach of the metal hose between EvU
and SR-unit.
Preparation
1
Switch the power supply of the evaluation unit on.
2
Wait for the 2.5 - 5 hours warming up time of the SR-unit (depending on ambient
conditions) to elapse.
NOTE
Signal output on the EvU when the warming up time is not reached yet:
1
LED: "Warning" is yellow.
2
Display: Message "DEV Temp" is output.
Carry out zero adjust
1
Align the optical beam path after the warming up phase,
ment of the sender/receiver unit ", page 54
.
2
Select in menu cal:
–
Zero Adjust – manual zero adjust (measuring path free from sample gas)
–
Activate Calibration mode (button “cal”), carry out menu item Zero Adjust.
3
Confirm the prompt.
Zero Measuring is displayed whilst zero point adjustment executes.
7.6
Fitting the SR-unit on the measuring probe.
The flange fixture can be removed before installing the SR-unit.
COMMISSIONING
7
8019532/100Q/V1-1/2018-08 | SICK
O P E R A T I N G I N S T R U C T I O N S | GM700 Ex
49
Subject to change without notice