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S8000 -100 High Precision Chilled Mirror Hygrometer PST/Michell

Updated:2023-09-20

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  • Brand: PST/Michell
  • Model: S8000 -100
  • Description: The S8000 -100 hygrometer directly measures the formation of condensation on a mirrored surface, offering the widest possible measurement range of -100...+20 °C frost/dew point. It uses a unique advan
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Product Details

S8000 -100 High Precision Chilled Mirror Hygrometer Description:

Product Manual

The New Laboratory Humidity Reference Standard

Features

Accuracy of ±0.1 °C (±0.18 °F)

Precision measurement to -100 °C (-148 °F) frost point (13.8 ppbV) with no need for additional cooling

Reproducibility of ±0.15 °C (±0.27 °Ffp) at -100 °C (-148 °Ffp) frost point

Simple configuration and operation via touch screen interface

Sensor optimized for fast response to low moisture levels

External 4-wire Pt100 connections

Microscope for visual inspection of condensate on mirror

Compact 19” x 4U package for flexibility of installation

Ethernet or USB connections

SD card data logging

The S8000 -100 hygrometer directly measures the formation of condensation on a mirrored surface, offering the widest possible measurement range of -100...+20 °C frost/dew point. It uses a unique advanced dual optics system which detects small changes in moisture condensed on the mirror surface. This results in a very high sensitivity and fast response to changes in frost point, even at very low moisture levels where measurements are most challenging. Fully automated control of the system means that no operator intervention is required. The instrument provides a range of Modbus digital communications, and analog outputs allowing it to be monitored remotely or via specific S8000 -100 logging software. 4-wire Pt100 connections are provided on the rear panel for remote mirror temperature monitoring. A high-contrast touch-screen LCD display gives or presents entirely customizable local indication of the measured values, along with a trend graph and fault warnings.

Specifications

Dew-Point Sensor
Measurement Range -100...+20 °C (-148...+68 °F) frost/dew point
Measurement Accuracy* ±0.1 °C (±0.18 °F)
Reproducibility at -100 °Cfp ±0.15 °C (±0.27 °F)
Stability at -100 °Cfp ±0.1 °C (±0.09 °F)
Speed of Response <2hrs to ±0.25 °C (±0.45 °F) stability @-90 °Cfp (-130 °Ffp)
<6hrs to ±0.25 °C (±0.45 °F) stability @-100 °Cfp (-148 °Ffp)
Temperature dependence at -100 °C (-148 °F) ±0.15 °Cfp (±0.27 °Ffp) per 1 °C (1.8 °F) environmental temperature change
Mirror Gold-plated copper
Temperature Measurement 4-wire Pt100, 1/10 DIN class B
Sample Flow Rate 500...1000 ml/min (recommended 750 ml/min)
Sample Gas Pressure 1.6 bara (23.2 psia) max
Pressure Sensor
Measurement range 0...1.6 bara (23.2 psia)
Measurement Accuracy Accuracy 0.25% FS Typical
Thermal error 1.5% FS Typical
Drift 0.2% FS/p.a non-cumulative
Temp Comp -20 °C...+80 °C (-4 °F...+176 °F)
Flow Sensor
Measurement Range 0 to 1000ml/min
Measurement Accuracy ±1.5% FS (10...100% of rated flow)
Monitor
Resolution User selectable to 0.001 °C (0.0018 °F), depending on parameter
Measurement Units °C dew/frost point, °C temperature, ml/min flow, bara pressure
Calculated units Relative humidity – %, Absolute humidity – g/m3, ppmV, Mixing Ratio – g/kg, Wet Bulb Temperature (Twb) – °C, °F, Water Vapor Pressure (wvp) – Pa, Pressure converted DP – °C, °F, Pressure – kPa, Barg, Psia, Psig
Outputs Analog: 2x active mA outputs, configurable 0...20 mA or 4...20 mA
Digital: Modbus RTU over USB
Optional: Modbus RTU over RS485/RS232, Modbus TCP over Ethernet
Alarm: 1x Process Relay
1x Alarm Relay
Both Form C, 1 A, 30 V DC
User Interface 5.7" LCD with touchscreen
Data Logging SD Card (8GB supplied) and USB interface.
Supports SD Card (FAT-32) – 32 GB max. that allows 24 million logs or 560 days, logging at 2-second intervals
Environmental Conditions +5 °C...+30 °C (+41 °F...+86 °F)
Power Supply 85 to 264 V AC
Power Consumption 185 VA
Mechanical Specification
Dimensions (W x H x D) 440 mm x 185 mm x 515 mm (17.32” x 7.28” x 20.28”)
Weight 22 kg (48.5 lb)
Sample Gas Connections Inlet: ¼" VCR
Outlet: ¼" Swagelok
General
Optional Remote Temperature Probe 4-wire Pt100, 1/10 DIN class B, 2m cable
Calibration 5-point UKAS calibration to -90 °Cfp (-130 °Ffp) + -100 °Cfp (-148 °Ffp)


* Measurement accuracy means maximum deviation between instrument under test and corrected reference. To this must be added the uncertainties associated with the calibration system and the environmental conditions during testing or subsequent use.

Applications

Reference humidity measurements in standards laboratories

Reference instrument in humidity calibration facilities

Precision moisture measurements in research and development

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