A99BC-500C Johnson Controls Temperature Sensor

Overview

The Johnson Controls A99BC-500C is a passive Positive Temperature Coefficient (PTC) silicon temperature sensor designed for precise and reliable temperature measurement in HVAC and refrigeration applications. It features a stainless steel probe and a high-temperature silicone cable, offering pre-calibrated accuracy that allows for easy sensor replacement without the need for system recalibration.

Features

• PTC silicon sensing element for stable and accurate temperature monitoring
• Pre-calibrated design enables direct replacement without recalibration
• High-temperature silicone cable provides durability in harsh conditions
• Stainless steel probe construction prevents corrosion
• Long 16-3/8 ft lead wire offers installation flexibility

Specifications

• Sensor Type: PTC Silicon
• Reference Resistance: 1,035 ohms at 77°F (25°C)
• Accuracy: 0.9°F (0.5°C) between 5°F and 167°F (-15°C and 75°C)
• Operating Temperature Range: -40°F to 248°F (-40°C to 120°C)
• Cable Type: High-temperature silicone
• Cable Length: 16-3/8 ft (5 m)
• Wire Gauge: 22 AWG
• Probe Material: Stainless steel

Applications

• Freezers, display cases, walk-in coolers, and reach-in refrigeration units
• Defrost termination temperature sensing and condenser fan cycling
• Space, return air, and outdoor air environmental monitoring
• Process cooling and heating applications
• Commercial HVAC and building automation systems