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
Overview
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.
Chilled mirrors are a fundamental method of moisture measurement.
The sample gas is passed over the mirrored surface which is constantly cooled until the optics module ‘sees’ condensation. This is achieved by shining a laser on the mirror and detecting the intensity of light reflected by the surface.
The temperature of the mirror at that point is a direct measurement of dew point.
With the addition of a PRT to measure the sample (or environment) temperature, chilled mirrors can also measure the relative humidity. The S8000 Remote and the Optidew are supplied with an external PRT, for the other S8000’s the PRT must be purchased separately.
Calibration systems typically include humidity generators, chilled mirror reference hygrometers, and optional compressors or dryers for low dew-point calibrations.
Both the HygroGen2 and HygroCal100 Advanced come with a relative humidity probe which doubles as a control element and a reference.
Ideally the reference should be more accurate than the instruments under test, this is where our chilled mirrors come in. All our calibration chambers can be used with a chilled mirror reference.
There is an option for customisable fittings, for large volume calibrations, the transmitter manifolds can be designed specifically for your connection type.