Overview
The Johnson Controls A99BC-1500C is a passive Positive Temperature Coefficient (PTC) silicon temperature sensor designed for reliable measurement in HVAC and refrigeration systems. It features a durable stainless steel probe and a high-temperature silicon cable.
Features
- High-accuracy PTC silicon sensing element for stable thermal measurement
- High-temperature silicon cable insulation for extreme environments
- Corrosion-resistant stainless steel probe construction
- Generous 49-foot lead wire to accommodate flexible installation requirements
Specifications
- Sensor Type: PTC Silicon
- Reference Resistance: 1,035 ohms at 77°F (25°C)
- Temperature Range: -40°F to 248°F (-40°C to 120°C)
- Cable Length: 49 ft (15 m)
- Wire Gauge: 22 AWG
- Accuracy: ±0.9°F (±0.5°C) from 5°F to 167°F
Applications
- Commercial refrigeration units, freezers, and walk-in coolers
- Defrost termination sensing and condenser fan cycling
- Space, return, and outdoor air temperature monitoring
- Hydronic, boiler, and industrial process temperature control


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