background image

4.0 CALIBRATION

Power the display(s). If you have the Setra humidity and temperature sen-
sor, then the displays are already calibrated and ready to use. If you are using 
other sensors, then you must calibrate the displays output signal to the engi-
neering units, unless your sensors are 0 to 5 or 0 to 10 V output and display 0 
to 100 (factory default setting).

Calibration requires a calibrated Voltage Source to simulate the sensor analog 
output.

Set range dip switch to either 5 V (for a 0 to 5 V input ) or 10 V (for a 0 to 10 V 
input) position.

The

 factory default calibration 

of the display is 0 to 5 VDC field sensor input, 

which will produce a display reading of 0.0 at 0 V and 100.0 at 5 V.  Also, if the 
range jumper switch is set to the 10 V input position, then the calibration will 
be 0.0 to 0 V and 100.0 at 10 V.     

Fig. 4

Input Wiring

Summary of Contents for SRMD

Page 1: ...lue 2 Faceplate Bezel White or Metallic Finish as ordered 3 Engineering units label set Note IfadualdisplayisorderedwithaSRHtemperatureorhumiditysensorandacolorspecifiedtomatch each oryourownsensors w...

Page 2: ...sion would be 2 wires and the dual display needs 2 wires for each of the two displays Run the wiring to the 24 VAC DC source and to the sensors that are to be monitored The power to the sensors is not...

Page 3: ...nal strip If you are using field sensors that are not Setra s SRH humidity temperature sensors then calibrate the display according to Section 4 before completing the wiring shown here Fig 3 Wiring E...

Page 4: ...display 0 to 100 factory default setting Calibration requires a calibrated Voltage Source to simulate the sensor analog output Set range dip switch to either 5 V for a 0 to 5 V input or 10 V for a 0 t...

Page 5: ...tup Humidity Sensor Apply 0 V and if necessary turn the ZERO potentiometer pot until the display reads 0 0 apply 5 VDC and turn the pot labeled 5V until the display reads 100 0 Setup Temperature Senso...

Page 6: ...he depth of the electrical box relative to the finish wall see Fig 2 install the mounting plate to the electrical box Be sure that the displays are installed right side up Install the 2 mounting screw...

Page 7: ...pins with the rubber grommets in the mounting plate Slowly and evenly push the bezel until the back of the bezel is flush against the finish wall Choose the appropriate Engineering unit labels for th...

Page 8: ...r normal installation use and service e SETRA is notified in advance of and the product is returned to SETRA transportation prepaid Unless otherwise specified in a manual or warranty card or agreed to...

Reviews: