Sensor Connections; Screw Terminal Pin Out - Measurement Computing USB-TEMP User Manual

Sensor Connections

The USB-TEMP supports the following temperature sensor types:
! Thermocouple – types J, K, R, S, T, N, E, and B
!
Resistance temperature detectors (RTDs) – 2, 3, or 4-wire measurement modes of 100 Ω platinum
RTDs.
! Thermistors – 2, 3, or 4-wire measurement modes.
! Semiconductor temperature sensors – LM36 or equivalent
Sensor selection
The type of sensor you select will depend on your application needs. Review the temperature ranges and
accuracies of each sensor type to determine which is best suited for your application.

Screw terminal pin out

The USB-TEMP has four rows of screw terminals — two rows on the top edge of the housing, and two
rows on the bottom edge. Each row has 26 connections. Between each bank of screw terminals are two
integrated CJC sensors used for thermocouple measurements. Signals are identified in Figure 3-1.
Figure 3-1. USB-TEMP screw terminal pin numbers
3-1
Chapter 3