A99CB-600C Johnson Controls Temperature Sensor

Overview

The Johnson Controls A99CB-600C is a passive PTC (Positive Temperature Coefficient) temperature sensor engineered for a wide variety of commercial refrigeration and HVAC applications. It features a high-sensitivity calibrated silicon thermistor element housed in a durable 6-inch stainless steel probe, offering exceptional accuracy and responsiveness without the need for recalibration when replaced. This splashproof sensor comes equipped with a 19-foot 8-inch (6 meter) PVC cable for extended wiring reach.

Features

• Calibrated PTC element combines the high accuracy of platinum-based sensors with the strong resistance variation of standard thermistors.
• 6-inch extended stainless steel probe provides reliable protection against moisture and corrosion in heavy-duty environments.
• 19.5-foot (6 meter) PVC lead wire simplifies installation across standard commercial spacing.
• Splashproof construction provides robust durability in refrigeration environments.
• Compatible with a wide selection of mounting hardware, surface clips, and immersion wells.

Specifications

• Temperature Sensing Range: -40 to 212°F (-40 to 100°C)
• Reference Resistance: 1,035 ohms at 77°F (25°C)
• Output Signal: 2.1 kOhm PTC resistance
• Accuracy: Plus or minus 0.9°F (0.5°C) between 5 and 167°F (-15 and 75°C)
• Lead Wire Gauge: 22 AWG PVC cable
• Probe Dimensions: 6-inch length, stainless steel construction

Applications

• Temperature monitoring in freezers, walk-in coolers, reach-in units, and display cases.
• Defrost termination sensing.
• Condenser fan cycling control.
• Space, return air, and hydronic HVAC temperature sensing.
• Compatible with Johnson Controls System 27 NOVA, A421, MR/MS series, and DX-9100 electronic control modules.