STD100-100 Schneider Duct Temperature Sensor 100mm Probe NTC 1.8k Ohm IP65 Air Duct Mounting Sensor

The STD100-100 is a duct-mounted temperature sensor from Schneider Electric's STD range, featuring a 100mm probe with an NTC 1.8 kilo-ohm sensing element. Designed specifically for measuring air temperature inside ducts, this sensor provides critical data for HVAC system performance monitoring and control decisions.

Unlike room temperature measurements, duct temperature readings inform key system operations: air leaving cooling coils indicates coil performance, mixed air chamber temperatures determine damper positions, and supply duct temperatures after reheat coils confirm heater operation. The 100mm probe length ensures representative readings by reaching beyond boundary layers near duct walls to measure the actual moving air stream.

Proper sensor placement is critical for accurate measurements. Probe length and air stratification considerations ensure the sensing element measures representative duct air rather than boundary layers near walls or unmixed air streams.

Ensure proper gland and housing sealing during installation. Leaky duct penetrations can admit dust and moisture, compromising sensor longevity and performance.

• Air Handling Units: Verify coil performance and control heating/cooling stages
• Mixed Air & Economiser Control: Determine outdoor and return air proportions
• Reheat Applications: Confirm delivered supply air conditions
• Extract Air Monitoring: Establish plant load from occupied spaces
• Laboratories & Cleanrooms: Validate installed air system performance
• Retrofit Projects: Utilize existing duct penetrations with compatible probe