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If selecting Analog Ch1 or Analog Ch2 for

either Primary of Secondary Room, enter

full-scale (FS) range that matches the trans-

ducer being used

Also enter voltage or milliampere range

that matches the transducer being used

Select desired units of measure to display on the Home

screen, either “WC or Pa. The unit of measure for the exter-

nal transducer must be selected before entering range and

output of the unit. After entering all data the units may be

changed and the range will scale accordingly.

The SRCM has 2 Analog Input Channels (ADC-CH1 and ADC-CH2)

Note: If a 4-20 mA transmitter is used as an analog input then a 250 ohm resistor

must be eld installed and this will be translated into a 1-5 VDC input at the input

terminals.

This takes an analog input from any transducer or transmitter: pressure, temperature

or humidity. If an external transducer is used, the full scale values and parameters

need to be congured into the SRCM so the unit understands the scale of measure-

ment being received on inputs ADC CH-1 or ADC CH-2.

The following is an example using a pressure transducer to measure secondary room

pressures. This is showing a pressure transducer with a range of ±1"WC and output

of 4-20 mA over that range.

The following is an example using a temperature sensor to measure primary room

temperature. This is showing a temperature range of ±50°C and output of 1-10 VDC

over that range.

Analog Inputs

Setra Systems SRCM User Manual

Other manuals for Setra Systems SRCM