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Appendix
A-1
Appendix
A Reference Data
TransmitterSpecification..........................pageA-1
OrderingInformation .............................pageA-6
DimensionalDrawings............................pageA-9
TRANSMITTER
SPECIFICATION
Functional Inputs
User selectable using the Model 244EC Configuration Interface and the
Models 244EH and 244ER configuration software; sensor terminals
rated to 42.4 V dc. See Table A-2 on page A-3.
Output
Two-wire 4–20 mA, linear with temperature for RTDs and
thermocouples, and linear with input for millivolts and ohms
Isolation
Input to output isolation tested up to 500 V ac rms (707 V dc) at
50/60 Hz
Power Supply
External power supply required. The transmitters operate on 12.0 to
42.4 V dc terminal voltage. Transmitter power terminals rated to
42.4 V dc.
Load Limitations
Ambient Temperature Limits
Operating Storage
–40 to 85 °C (–40 to 185 °F) –50 to 120 °C (–58 to 248 °F)
1322
1000
750
250
0
10
12.0
20 30 40 42.4
Supply Voltage (V dc)
Maximum Load = 43.5 ϫ (Supply Voltage – 12.0)
Operating
Region
4–20 mA dc
Load (Ohms)
500
244-24401A