26
8027092/AE00/V1-0/2022-10| SICK
O P E R A T I N G I N S T R U C T I O N S | VISIC100SF
Subject to change without notice
7
ADJUSTMENT
7.4.5
Performing sensitivity adjustment
The sensitivity adjustment is started when the zero point adjustment has been completed.
Procedure
1
Screw the hose adapter for the corresponding test gas into the thread under the sensor
to be calibrated.
2
Attach the hose for the corresponding test gas to the hose adapter.
3
Screw the closed sampling valve onto the test gas cylinder containing the test gas.
4
Connect the appropriate adapter to the tapping valve.
5
Connect the open end of the hose to the transition piece.
6
On the adjustment tool: Menu item: “DP1” appears
7
On the adjustment tool: Press “Down arrow” to menu item:
Test gas
→
Enter test gas concentration
8
Enter the test gas concentration using the “Arrow” keys.
9
Press “Confirm”.
10
Press “Arrow down”.
>>> Menu: Gain DP1 is displayed.
11
Open the sampling valve to feed the test gas. Hose connection of the hose adapter must
point vertically downwards.
12
Press “Confirm”.
>>> Current actual value and sensitivity value from the last adjustment are displayed.
13
Press “Confirm” to start the adjustment procedure.
>>> New sensitivity value is calculated.
>>> During the calculation, an underscore runs from left to right in the 2nd line.
>>> The actual value adjusts to the entered test gas concentration.
>>> The sensitivity is also recalculated.
14
When the actual value is stable, press “Confirm” and finish calculation of the value.
>>> “Save” appears.
>>> After successful saving, a square is briefly displayed on the right.
>>> Sensitivity adjustment is finished. New zero point offset is saved.
>>> Display automatically changes to the display of the current actual value (new zero point).
15
Close the gas sampling valve to stop the gas sampling.
16
Pull the hose off the hose adapter.
17
Remove the hose adapter.
Possible malfunction messages
see “Adjust sensitivity”, page 20
NOTICE:
Use correct hoses, hose adapters, sampling valves and transition pieces for the
respective gas sensor:
▸
CO: Marked pink
▸
NO and NO
2
: Marked blue/orange
Note:
The flow is automatically regulated to a constant value.
●
0.5 l/min for synthetic air and CO, NO and NO
2
