Stanford Research Systems SR630 Thermocouple Monitor

The SR630 is a versatile 16-channel thermocouple monitor made by Stanford Research Systems (SRS), a respected manufacturer of precision test and measurement instruments.

• Supported Thermocouple Types: B, E, J, K, R, S, T

• Temperature Range: -200 °C to +1700 °C

• Resolution: 0.1 °C

• Display Units: °C, °F, K, or VDC

Monitoring & Logging Features

• Channels: Up to 16 independent inputs through screw terminals with cold-junction compensation

• Data Logging: Stores up to 2000 timestamped readings in non-volatile memory for later analysis

• Logging Intervals: Programmable from 10 to 9999 seconds

Interfaces & Output Capabilities

• Communication Ports: GPIB and RS-232 for digital control and data retrieval

• Printer Interface: Centronics parallel port for hardcopy output in tabular or strip-chart formats

• Analog Outputs: Four analog outputs (for channels 1–4) that provide a voltage proportional to the measured temp or voltage, configurable via slope and offset adjustments

Voltage Measurement Mode

In addition to temperature readings, the SR630 can operate as a 16-channel DC voltmeter:

• Ranges: 30 mV to 100 V, with 1 mV resolution

• Accuracy: 0.05%, with 1 µV input offset drift

• Channel Flexibility: Each channel can independently switch between temperature or voltage measurement