Schneider 5123008010 STD100-200 Duct Temp Sensor NTC 1.8K 200mm

The Schneider Electric 5123008010 (Model: STD100-200) is an extended duct-mounted temperature sensor designed to capture temperature profiles in larger air ducts. Housing a high-precision 1.8KΩ @ 25°C NTC thermistor element, this passive sensor features a 200mm (7.87 in.) rigid probe, making it ideal for deep insertion into primary supply or return air ducts of large commercial Air Handling Units (AHUs).

Operating without active electronic components, the STD100-200 is highly immune to electromagnetic interference, ensuring a long, drift-free service life.

• Regulatory & Certifications: RoHS Compliant, REACH, CE-compliant, WEEE
• Enclosure & Material: IP65-rated impact-resistant polymer junction box with a secure gasketed cover

1. Large AHU Supply Air Duct Monitoring: Long probe inserts deeply into large-diameter main supply air ducts, capturing core air temperatures while bypassing sidewall thermal friction.
2. Fresh Air Pre-Heater Protection: Placed downstream of pre-heating coils to protect water lines from freeze damage in sub-zero climates.
3. High-Bay Ventilation Balancing: Monitors air temperature inside large commercial duct systems (e.g. supermarkets or factories) to optimize temperature distribution.