SF82 Online Fast-Response Dew-Point Hygrometer



Compressed Air Related Products
The SF82 Online has been developed as a fast-response, quick-to-install hygrometer system for the complete dew-point measurement range of -60 up to +60 °C dew point, which covers many moisture measurement applications.





Product Features

  • Measurement range -60 to +60 °C dew point
  • Accuracy ±2 °C dew point
  • 4 to 20 mA output
  • Modbus RTU over RS485 output
  • Dual configurable alarm outputs
  • Sample block and cable included
  • Traceable 9-point calibration certificate
  • Ultra-fast response to moisture change
Easidew Online

Technical Specification

Performance Specifications
Measurement Range -60 to +60°C dew point; -50 to +50°C dew point; -50 to +30°C dew point;
non-standard dp ranges and ppmV ranges available on request
Accuracy ±2°C dew point*
Response Time T95 to -60°C dew point in <3 minutes
Repeatability 0.5°C dew point
Sensor Calibration Traceable 9-point calibration certificate
Electrical Specifications
Online Output Signals
4-20 or 0-20 mA, Modbus RTU over RS485; dual programmable relay alarms
Online Output Dew point
Maximum Analog Output Scaled Range Dew point: -80 to +20°C
Online Supply Voltage AC: 85 to 264V AC
Online Current Consumption 60 mA maximum
Electrical Safety EN61010-1
Operating Specifications
Operating Temperature Sensor: -20 to +60°C; Monitor: 0 to 50°C
Compensated Temperature Range Sensor: -20 to +50°C; Monitor: not applicable
Storage Temperature Sensor: -40 to +60°C; Monitor: -10 to 60°C
Operating Pressure 10 MPa (100 barg) maximum
Sensor Flow Rate 1 to 5 Nl/min mounted in standard sampling block; 0 to 10 m/sec direct insertion
Mechanical Specifications
Ingress Protection Sensor MiniDIN: IP66 in accordance with standard BS EN 60529:1992+A2:2013;
NEMA 4 protection in accordance with standard NEMA 250–2014
Sensor M12: IP65
Monitor: IP65 (NEMA 4X) front panel only
Sensor Housing Material 316 stainless steel
Dimensions Sensor: L=132mm x ø45mm (with connector cable)
Sensor M12: L=156mm x ø45mm (with connector cable)
Monitor: 1/8 DIN Case, 96 x 48 x 85mm (w x h x d)
Filter (Sensor Protection) Standard: HDPE <10μm
Sensor Process Connection 5/8” - 18 UNF, 3/4” - 16 UNF, G1/2” BSP
KF40 Flange Accessories Flange for 5/8” 18 UNF and 3/4” 16 UNF process connections
Sensor Weight 150g
Sensor Electrical Connections MiniDIN 43650 form C, M12 5 pin (A coded)
Online Sensor Cable 0.8, 2, 5, 10 metre connector/cable available
Sensor Diagnostic Conditions (factory programmed) Sensor fault: 23 mA
Under-range dew point: 4 mA
Over-range dew point: 20 mA
NOTES * Over Compensated Temperature Range