HygroSmart HS3 Probe  HygroSmart

Advanced Interchangeable Relative Humidity and Temperature Probe

The HygroSmart HS3 is an accurate, stable and user configurable probe designed to provide reliable humidity measurement for process control in a wide range of applications. The HS3 probe features an interchangeable sensor to ensure minimal process downtime and low cost of ownership.

Product Features

  • Accuracy ±0.8%; RH
  • Operating temperature -40 up to 120°C
  • Rugged 10 bar pressure rated industrial housing
  • Second output parameter: temperature (°C), frost/dew-point (°C), absolute humidity (g/m3), specific enthalpy (kJ/kg) or water activity
  • 2x Voltage outputs (0-1/2.5/5/10V), 1x RS485 output (Modbus RTU)
  • Probe 100% end-user configurable
  • Interchangeable sensor for rapid maintenance
  • Digital zero & span trimming
  • Traceable 5 point calibration certificate
  • Loop checking Simulator

Technical Specifications

Performance specifications
RH Measurement Range (RH) 0 to 100% RH
RH accuracy @ 23°C ± 0.8% RH (5 to 95%RH)
RH thermal coefficient <0.03% RH/°C typical
RH measurement response time < 1 sec to RH event
RH element Michell H8000
RH long term stability ±1% RH per year
Temperature measurement range -40 to +85°C
Temperature accuracy ±0.2°C
Temperature resolution ±0.01°C
Temperature technology PT1000 1/3 DIN Class B
Recommended storage range +10 to +40°C
Calibration Traceable 5-point calibration certificate
Application Software HS3 Application Software downloadable from www.michell.com
Electrical Specifications
Voltage output signals 0-1 V, 0-2.5 V, 0-5 V, 0-10 V
Digital output signal Modbus RTU over RS485 2-wire
Electrical thermal coefficient 0.004%/°C
Load resistance 0-1, 0-2.5 V : 10K Ω
0-5, 0-10 V : 50K Ω
Supply voltage range 5 to 28 V DC
Supply current consumption 5V : 4mA
28V : 7mA
Supply protection Protected against reverse voltage and overvoltage
Configurable calculated scales/ranges Dew point: -40 to +100°C
Water activity: 0 to 1
Absolute humidity: 0 to 200 g/m³
Specific enthalpy: 0 to 800 KJ/kg
Frost point: -50 to +10°C
Configurable temperature scales/
°C, °F : -20 to 80°C, 0 to 50°C, -40 to +60°C,
-30 to +70°C, 0 to 100°C
CE conformity 2004/108/EC heavy industrial immunity
Operating Specifications
Probe operating temperature Probe: -40 to +85°C
Interchangeable sensor:-40 to +120°C
Recommended storage temperature +10 to +40°C
Mechanical specification
Ingress protection IP67 (NEMA 6)
Material Probe & sensor body: Solid glass filled PBT
Interconnect ring: Anodise aluminium
Filter assembly: HDPE or moulded polymer & PVDF
Dimensions Probe: L=145mm, ø15mm
Interchangeable sensor: L= 56mm, ø12mm
Weight 31g approx (packed weight 45g)
Electrical Connector M12 5 pin (A coded)
Mating connector/cable (optional) M12 connector/cable 2, 5, 10 meter assembly
Product marking Indelible laser etched alphanumeric/bar coded
Maintenance kits ( Optional )
HS3 Probe simulator kit Desk-mounted configuration kit, 3 x sensor
simulators (25%, 50%, 75% RH at 23°C),
spare probe electronics, carry case
HS3 Probe configuration kit Desk-mounted configuration kit, spare
probe electronics, carry case
HS3 Probe logger/ configuration converter cable 1.8 metre USB to RS485 converter cable with M12 connector

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