GFS2102™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 182
If the returned values disagree with the current measured values by more than ± 0.01%,
use the
[Remote Communications]
to send the command “!STDRES=xxx.xxx, yyy.yyy”
where:
xxx.xxx = new value for 100 Ohm resistor
yyy.yyy = new value for 110 Ohm resistor
Remove the calibration cable, replace the top of the LCM and cycle the power.
1. 100 Ohm Hi Measure
2. 100 Ohm Hi Sense
3.
100 Ohm Lo Measure.
4.
100 Ohm Lo Sense.
5.
110 Ohm Hi Measure
6. 110 Ohm Hi Sense
7.
110 Ohm Lo Measure.
8.
110 Ohm Lo Sense.
9. No Connection.
10. No Connection.
9 7 5 3 1 Index Arrow
10 8 6 4 2
Figure 117.
View of main board socket J19 or top view of calibration cable
7.5.10
LCM REMOTE COMMAND FOR AUTOMATION
The “ALLR” command can be used and parsed to obtain the LCM reading for most outputs
needed for the LCM calibration if partial automation is desired. Once sent, a typical response
from this command returns:
“
96965.59, NONE, 24.54, 23.534, 22.231, 29.56, 21.83, 28.51, 21.89, 21.090, NONE, 76290443.977”
1 2 3 4 5 6 7 8 9 10 11 12
Where:
1)
Barometric (Enclosure) pressure in Pascal
2)
Secondary pressure sensor (NONE = not installed)
3)
Ambient % relative humidity
4)
Ambient PRT temperature in °C
5)
External (Reference Mass) PRT temperature in °C
6)
TH Probe #2 percent relative humidity
7)
TH Probe #2 temperature in °C
8)
TH Probe #3 percent relative humidity
9)
TH Probe #3 temperature in °C
10)
Infrared cylinder temperature in °C
11)
Proximity sensor (NONE = not installed)
12)
Elapsed time in milliseconds since last powerup, restart, or rollover.
This command can be used in conjunction with data collection software such as COMPASS®
to help in automating the calibration of the LCM.
For example, if the relative humidity for TH Probe #2 is being measured, all data before the
first 5 commas can be stripped.
For time calibration or verification, the time does not need to be reset to be used effectively.
Simply use:
Elapsed Time (seconds) = Time reading (End) – Time reading (Start) / 1000