Temperature measurement system 944

direct-contactfor calibrationdesktop

Summary
The 944 system measures the true surface temperature of sensors by controlling and regulating temperature along the tested sensor.

Key points

• Displays true surface temperature
• Temperature range: 30°C to +350°C
• Resolution: 0.1°C

Operating principle
A fine Type N thermocouple is used as the surface temperature sensor. A second thermocouple junction, positioned 2–3 mm away, detects the temperature difference caused by heat flow through the sensor. A heating device warms the thermocouple probe until the temperature gradient reaches zero, eliminating conduction from the probe shaft to the hot plate and avoiding measurement disturbance. The 944 system can be used with the 983 surface sensor calibrator.

Supplied as standard

• Type N thermocouple, 935-14-81
• User manual
• Traceability certificate

Notes
Specify supply voltage when ordering: 100/120 V (50/60 Hz) or 200/240 V (50/60 Hz). Optional UKAS 5-point calibration certificate available.

Specifications
Temperature range: 30°C to +350°C
Stability: ±1°C
Accuracy: ±2°C with traceable calibration certificate
±5°C without certification
Probe characteristics: Diameter: 7.5 mm
Length: 150 mm
Cable length: 850 mm

General specifications
Dimensions: 90 x 153 x 265 mm
Mass: 4 kg
Display: Resolution: 0.1°C or 0.1°F
Power supply: 100 / 120 V (50/60 Hz) or 200 / 240 V (50/60 Hz)

Technical features / specifications

• Temperature range: 30°C to +350°C
• Stability: ±1°C
• Accuracy: ±2°C (with traceable certificate); ±5°C (without certification)
• Probe: diameter 7.5 mm; length 150 mm; cable length 850 mm
• Dimensions: 90 x 153 x 265 mm
• Mass: 4 kg
• Display: resolution 0.1°C or 0.1°F
• Power supply: 100/120 V (50/60 Hz) or 200/240 V (50/60 Hz)