Product Details

MICHELL HS3 Probe

SKU:   MIC-HS3 Probe
HygroSmart HS3 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. 

  • 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
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/
ranges
°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 
identification
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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