Michell Instruments PC33 and PC52 Humidity Probes
Starting at $160.00

Not in stock. Usually ships in 4-6 weeks [?]

Need Help? Call a Calibration Engineer 1-800-884-4967

We're open 8:00am to 5:30pm ET


  • Low cost PC33 with analog output is designed for HVAC applications
  • PC52 with analog output is designed for accurate measurement in controlled environments
  • Analog zero and span adjustment
  • Measurement Range
    • Humidity: 0-100% RH
    • Temperature: -20 to +80°C (-4 to +176°F)
  • Accuracy @ 23°C (73°F)
    • Humidity: <±2% RH (PC52), <±3% RH (PC33)
    • Temperature: ±0.2°C (PC52), ±0.3°C (PC33)
  • RH Sensor Stability: ±1% RH / year
  • RH Sensor Response Time: <10 sec typical (90% of the step change)
  • Output Signal: 4–20 mA, 0 to 1, 0 to 5, 0 to 10 V

The Michell Instruments PC33 and PC52 series offer a comprehensive range of relative humidity probes for accurate, stable and repeatable measurements. Available with analog output signals, the PC series can be installed in a wide variety of applications. Optional temperature measurement is available for all models.

The Michell Instruments PC33 features an accuracy of ±3% RH with a single point calibration. The low cost PC33 is designed for HVAC applications. The PC52 is accurate to ±2% RH with two point calibration. The PC52 is designed for accurate measurement in controlled environments.

Mounting Bracket

Michell Instruments A000110 Mounting Flange
Aluminum mounting flange for ø19mm (0.75") SS probes (outside ø80mm)
Michell Instruments A000150 Mini Flange
Mini flange for ø19mm (0.75") polymer probe


Please consider these optional accessories.

Michell Instruments A000002 Protection Cap
Black, 0.75in (19mm) slotted protection cap
Michell Instruments A000014 PVDF Filter
19mm (0.75") PVDF filter
Michell Instruments A000015 PVDF Filter with Protection Cap
19mm (0.75") PVDF filter w/ protection cap, black
Michell Instruments A000021 Mesh Filter with Protection Cap
19mm (0.75") mesh filter with black protection cap
Michell Instruments Arrow Sintered Filter
0.75in (19mm) stainless steel sintered filter, choice of 5 or 20μm
Michell Instruments Connector
19mm (0.75") connector, with screw terminal or cable
Michell Instruments Foil Filter
0.75in (19mm) foil filter (0.7 or 2μm) with protection cap