Perform on-site relative humidity calibrations
A
Michell Instruments product story
Edited by the Engineeringtalk editorial team
Apr 12, 2006
Humidity calibrator lets users of humidity sensors, transmitters and read-out devices quickly and accurately generate reference humidity conditions and perform on-site relative humidity calibrations.
Rense Instruments' S-503 humidity calibrator has been added to its range of dewpoint and relative humidity generators.
It lets users of humidity sensors, transmitters and read-out devices quickly and accurately generate reference humidity conditions and perform on-site relative humidity calibrations.
Set points from 10 to 90% RH in steps of 0.1% RH are available from the instrument's front panel.
The calibrator has an axial fan that continuously circulates air through the test chamber for humidity and temperature uniformity.
This results in a system that stabilises within 0.5% RH of the set point in typically less than 10min.
The calibrator provides a direct readout of the measured humidity for a range of voltage and current transmitters that do not have an integral display, as well as providing a display of the percentage RH and temperature for the chamber itself.
These lightweight, transportable, self-contained units use a thin film capacitive sensor and closed loop controllers to modulate the flow of air through a saturation and desiccant chamber.
The unit has access ports for seven probes, up to 18.5mm in diameter and can be adapted to suit various commercially available humidity probes.
The S-503 can be supplied with a UKas calibration certificate if required.
It can also be specified with an independent reference standard, such as Michell Instruments' Optidew Vision cooled mirror dewpoint meter.
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Contact Michell Instruments
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