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Automatic Humidity Probe Calibrator - Michell HG10

Updated:2025-03-13

Brand: PST/Michell
Model: Michell HG10
Description: The Michell HG10 Humidity Calibration System is a computer-controlled automatic calibration system for humidity sensors. The HG10 is capable of repeatable generation of temperature and relative humidi
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Product Details

High Precision Chilled Mirror Hygrometer - Michell S8000 RS Description：

Product Manual

Reference Hygrometer Controlled Humidity Generation

Features

Automatic calibration system with reference hygrometer

Wide range of humidity generation 1 to 95% RH, -50 to +50°Cdp

High accuracy ±0.1°C fundamental reference

User-configurable temperature and humidity profiling allows calibration cycles to be run without constant supervision

Very fast changes between generated relative humidity points

The Michell HG10 Humidity Calibration System is a computer-controlled automatic calibration system for humidity sensors. The HG10 is capable of repeatable generation of temperature and relative humidity set points over the range 1 to 95% RH (-50 to +50°Cdp) at temperatures of +20 to +50°C with excellent stability. The supplied chilled mirror reference instrument provides traceability directly to national standards and makes the system suitable for use in high-level calibration laboratories.

The supplied PC software allows the creation of automatic calibration programs, for evaluating the performance of humidity sensors over a range of operating conditions. The measured values from the chilled mirror reference are used in a closed control loop to enable repeatable set point generation, time and time again.

Specification

General
Enclosure	19” Rack System, H= 2.1m
Power Supply	100 to 115 V or 220 to 240 V 50/60Hz
Pressure Swing Dryer
Gas Output	Flow: 7 Nl/min Pressure: 0.68 barg Moisture Content: <1ppm_V (<-75°Cdp)
Required Gas Supply	Flow: 10 Nl/min Pressure: 5 to 7 barg Moisture Content: Oil and liquid water free
Type	Twin column desiccant, pressure swing
Desiccant	4 ?ngstr?m Molecular sieve bead (4-8 mesh)
Timer	Motorized cam
Operating Temperature	+5 to +35°C
Generator
Generation Range	Humidity: 1 to 95% RH (-50 to +50°Cdp) Temperature: Dependant on temperature chamber
Generated Gas Output	Air 2 Nl/min @ 0.5 barg via heat traced line
Dual Stage MFC Mixing	Dual mass flow controllers
Power Consumption	550 V A maximum
Dual Stage MFC Mixing	Dual mass flow controllers
Operating Temperature	+5 to +40°C; 10 to 90% RH
Enclosure	19" Rack System, H= 2.1m
Control System	Closed loop feedback
S8000 Dew-Point Sensor Performance
Performance
Accuracy	±0.1°C (±0.18°F)
Reproducibility	±0.05°C (±0.09°F)
Measurement technology	Chilled Mirror
Sensor	2-Stage	High Temp PEEK	Climatic head
Dew-point range	–40°Cdp@ sensor temp of +20°C +90°Cdp @ sensor temp of +90°C	–40°Cdp @ sensor temp of +20°C +120°Cdp @ sensor temp of +120°C	–10°Cdp @ sensor temp of +20°C +120°Cdp @ sensor temp of +120°C
Temperature range	–40 to +90°C	–40 to +120°C	–40 to +120°C
%RH range	<0.5 to 100%	<0.5 to 100%	10 to 100%
Min measured dew point @ 20°C	–40°C	–40°C	–10°C
Mirror material options	Gold plated copper (standard), gold stud, Platinum stud**
Sensor body material options	Acetal (standard), high temperature PEEK, Anodized aluminum**
Response speed	1°C/sec (1.8°F/sec) plus settling time
Operating pressure	20 barg (290 psig) standard pressure High version: 250 barg (3625 psig) max
Remote PRT
Temperature measurement	4 wire Pt100, 1/10 DIN class B
Accuracy	±0.1°C (±0.18°F)
Cable length	2m (6.6ft) (250m (820ft) max)
Optional Remote Pressure Sensor
Measurement range	0 to 25 bara (0 to 377 psia)
Accuracy	0.25% Full Scale
Measurement units	psia, bara, KPa or MPag
Pressure transducer thread	1/8” NPT
Monitor
Resolution	User-selectable to 0.001 dependant on parameter
Measurement units	°C and °F for dew point and temperature %RH, g/m3, g/kg, ppm , %Vol, ppm (SF ), for calculated V W 6 humidities
Outputs	Analog Digital: 3 channels, user selectable 4–20 mA, 0–20 mA or 0–1 V Modbus RTU over USB and optionally Modbus RTU over RS232 or RS485, or Modbus TCP over ethernet. Alarm: Two volt free changeover contacts, one process alarm, one fault alarm; 1 A @ 30 V DC
HMI	5.7” LCD with touchscreen
Data logging	SD Card (512Mb supplied) and USB interface SD Card (FAT-16) – 2Gb max. that allows 24 million logs or 560 days, logging at 2 second intervals
Environmental conditions	–20 to +50°C (–4 to +122°F)
Power supply	85 to 264 V AC, 47/63 Hz
Power consumption	100 V A
Mechanical specifications
Dimensions (instrument)	190 x 255 x 215mm (7.5 x 10.0 x 8.4”) h x w x d
Dimensions (sensor)	?45 x 128mm with M36 x 1.5-6g mounting thread
Weight	4.2kg (9.26lbs)
Cable lengths	3, 5 or 10m (9.8, 16.4 or 32.8ft)
General
Storage temperature	–40 to +60°C (–40 to +140°F)
Detection system	Single optics detection system with auto adjustment
Calibration	4-point traceable in-house calibration as standard; UKAS accredited calibrations optional – please consult Michell Instruments