Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 4
Version: 8.0
I0000757
Formula:
Example:
RH CALIBRATION INSTRUCTIONS
Note:
This is only a single point calibration. All transmitters are factory calibrated to meet/exceed
published specifications. Field adjustment should not be necessary.
The dipswitch allows the user to calibrate the sensor through the software. Setting switch 4 ON will put the
transmitter into setup mode allowing the increment and decrement to work.
Once in setup mode, the output will change to 50% (2.5 V for 0-5 V or 5 V for 0-10 V). Each increment or
decrement step will cause the output to change by 0.1 V for 0-5 V or 0.2 V for 0-10 V in setup mode. This can
be used to show the user how far offset the transmitter is. To see the starting point again set switch 1 ON.
This will show the 50% output again. When the unit is out of setup mode the output will go back to RH
output. The maximum offset is 10%. There can be a total of 20 increments.
Increment RH Output
This will shift the RH output linearly up in 0.5% steps. Switch 4 must be set to ON first. After switch 4 is on,
each time switch 5 is set ON the RH output will increase by 0.5%. The increase goes into effect each time
switch 5 is set to ON.
Decrement RH Output
This will shift the RH output linearly down in 0.5% steps. Switch 4 must be set to ON first. After switch 4 is
on, each time switch 6 is set ON the RH output will decrease by 0.5%. The decrease goes into effect each
time switch 6 is set to ON.
Reset RH Output
This will reset the RH output back to the original calibration. Switch 4 must be set to ON first. After switch 4
is on, toggle switches 5 and 6 ON then OFF. After 5 and 6 are OFF slide switch 4 OFF.
When all calibration is completed, remember to place the switches back into the positions that correspond
to the output needed as shown in
FIGURE 7
(p. 3).
FIGURE 8:
TEST SELECTION
SWITCHES
TEST INSTRUCTIONS
Test mode will make the transmitter output a
fixed 0%, 50%, or 100% value. The sensor will not
affect the transmitter output. This is used for
troubleshooting or testing only.
Switches 1, 2, and 3 are used for test mode. The
output will be a fixed 0%, 50%, or 100% signal
that corresponds to the output selected with
switches 6, 7, and 8. Refer to
FIGURE 8
(right) for
switch settings.
ON
2
6
8
1
OFF
50% RH Output
100% RH Output
4
3
OFF
5
ON
7
ON
2
3
7
8
ON
1
4
5
6
OFF
ON
4
8
0% RH Output
1
ON
2
3
5
6
7
Figure #5
RH CONVERSION FORMULAS
0-5 VDC
[VDC signal] / 0.05 = percent RH
1.25 vdc output signal
1.25 / 0.05 = 25% RH
0-10 VDC
[VDC signal] / 0.10 = percent RH
7.50 vdc output signal
7.50 / 0.10 = 75% RH
