Honeywell Searchline Excel Cross-Duct Technical Handbook page 62

MAN0889_Issue 3_03/13
Appendix A - Handheld Interrogator
where: dd
mm
yy
Note: The time and date will not be updated unless both are entered and accepted without error.
Cal Sensor
This menu option zeros the system.
Notes:
1. The 4-20 output is inhibited during this procedure. See the earlier description.
2. There must be no gas in the system beam path whilst this procedure is carried out. The following
message is displayed:
The following message is displayed while the calibration operation is being performed:
If the calibration is successful, the following message is displayed for a period of three seconds:
Force mA
This option allows the system s analogue output signal to be adjusted to a fixed level, e.g. when setting up a
system controller. The following message is displayed:
mmmmm
where:
This is adjusted using the ▲ and ▼ keys over the range 1mA to 21mA in steps of 0.1mA. After adjustment the
output is forced to the set level and the following message is displayed:
mmmmm
where:
Day.
Month.
Last two digits of the year.
Ensure Zero Gas
Press Enter
Processing Data
Please Wait...
Zero Calibrated
O/P current mA
mmmmmm
Current to output.
Fixed:
Press Enter
Analogue output current previously set.
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Searchline Excel Cross-Duct Technical Handbook
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mmmmmm mA