Specifications

SPECIFICATIONS: (Typical @ 25°C, V+ = +15V)
RTD Types: =.00385, .00388, .00392 100Ω @ 0°C
Resolution: 0.1°
Accuracy: ±0.3°C
Input connections: 2, 3, or 4 wire
Excitation current: .25 mA
Max. Lead resistance: 50Ω
Input protection to 120Vac
Automatic linearization and lead compensation
User selectable °C or °F
Lead resistance effect: 3 wire—2.5°C per Ω of imbalance
4 wire—Negligible
1 Digital Output
Sensor Hookups
The RTD sensor must be connected as shown in the accompanying
diagrams to insure proper operation.
3-Wire: The D1400 modules are shipped from the factory configured for 3-
wire operation. Connect the RTD sensor as shown in the diagram. The wires
connected to the +I and -I terminals should be matched in length and gauged
for proper lead compensation. The +I and +SENSE terminals must be tied
together at the connector with a short wire jumper. For proper 3-wire lead
compensation, the RTD 3/4 wire set-up bit must be 0 (see Set-Up (SU)
command). A typical set-up for 3-wire operation would be 31070182.
Appendix C
D1400 Data Sheet
J3 = Wire Jumper
Figure C-1. 3-wire RTD Configuration
J1,J2 = Wire Jumper