Belimo 01ST-1L3 - passive contact temperature sensor

Belimo 01ST-1L3 temperature sensor

Passive contact sensor designed for measuring temperature on pipes and curved surfaces. The documentation specifies water as the medium. The sensor has a brass probe and a PVC cable.

Key features

• Passive temperature sensor output signal: NTC10k (10k2).
• Measuring range: -35...100°C [-30...210°F].
• Probe diameter: 6 mm.
• Electrical connection: 2 m cable, 2-wire.
• IEC/EN protection rating: IP65.
• Measuring current for NTC10k (10k2): <2 mA @ 25°C [77°F].
• Accuracy for NTC..: ±0.2°C @ 25°C [±0.35°F @ 77°F].
• Time constant τ (63%) on a water pipe with thermal paste: typically 17 s.
• A-22P-A47 mounting strap for pipes ø20...110 mm [0.8...4.3"] included.

When measuring on a pipe surface, the effect of ambient temperature can be reduced by using thermal paste. A-22P-A44 paste is available as an option.