SF52 Dew-Point Transmitter

The SF52 dew-point transmitter is a simple, cost effective sensor designed for use in harsh industrial dryer applications where reliability and toughness are required at an economical cost.

The SF52 is available with a choice of G1/2” and 1/2” NPT process connections and voltage or mA outputs. A key feature of the unit is the recessed and protected measuring element giving an extended sensor life cycle.

Our polymer based sensor is calibrated on a high volume traceable calibration system, providing OEM quantities of units on short deliveries, each with a 3 point calibration certificate.

Product Features

  • Ideal for OEM dryer use
  • Dew-point measurement range -40 to +60°C (-40 to +140°F)
  • Fast response
  • Rugged IP65 construction
  • 3-Point traceable calibration certificate
  • Accuracy ±2°C (±3.6°F)
  • Voltage or mA outputs

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Technical Specifications

Measurement Range -40 to +60°C (-40 to +140°F) dew point
Accuracy ±2°C (±3.6°F) dew point
Repeatability 0.5°C (0.9°F) dew point
Accuracy (Absolute Humidity) 0.4 to 3 g/m3 on value of absolute humidity
Stability <1°C (<1.8°F) / year
Calibration Traceable 3-point calibration certificate
Electrical Specifications
Output Signal 0 to 1, 0 to 5, 0 to 10 V or 4–20 mA (3-wire)
Output Dew point, absolute humidity
Analog Output Scaled Range Standard -40 to +60°C (-40 to +140°F)
               -30 to +30°C (-22 to +86°F)
               0 to 200g/m3 Non-standard available upon request
Supply Voltage 14 to 30 V DC (for 0 to 10 V output)
8 to 30 V DC (for 0 to 1 / 0 to 5 V / 4-20 mA output)
Current Consumption V output <9 mA
mA output <29 mA
CE Marked Certified
Operating Specifications
Operating Humidity 0-100% RH
Operating Temperature -40 to +60°C (-40 to +140°F)
Operating Pressure 2 MPa (20 barg / 290 psig maximum)
Thermal Compensation Characterized over operating range temperature
Mechanical Specifications
Ingress Protection IP66 in accordance with standard BS EN 60529:1992
NEMA 4 in protection accordance with standard NEMA 250-2003
Housing Material Nickel-coated brass
Dimensions L=85mm, ø24mm (maximum)
Filter HDPE front filter
Process Connection G1/2” BSP, 1/2” NPT
Weight 320g (11.3oz)
Cable 2m (6.6’) of halogen free TPE cable
Diagnostic Conditions
(Factory Programmed)
Sensor Fault23 mA
Under-range Dew Point4 mA
Over-range Dew Point20 mA