Impedance


ImpedanceOur Impedance hygrometers are rugged, low-cost, industrial measurement instruments for reliable moisture analysis from trace levels to ambient air conditions. They can be used in a wide range of gases, including hazardous area applications (flammable or explosive gases) and with many corrosive gases. All Impedance instruments use Michell's Advanced Ceramic Moisture Sensor technology.

The Ceramic Sensor is constructed using state of the art thin and thick film techniques. Operation of the sensor depends upon the adsorption of water vapor onto a porous non-conducting "sandwich" between two conductive layers built on top of a base ceramic substrate. The active sensor layer is very thin - less than one micron (about 0.00004 inches) and the porous top conductor that allows transmission of water vapor into the sensor is even thinner. Therefore the sensor responds very rapidly to changes in applied moisture, both when being dried (on process start-up) and when called into action if there is moisture ingress into a process.

Despite this extreme sensitivity to changes in moisture content, the Michell Ceramic Moisture Sensor is incredibly rugged due to the nature of its construction. To protect the sensor further against contaminants and pipe swarf it is housed in a protective sintered stainless steel guard. All Michell Ceramic Moisture Sensors give <1°F dew point accuracy and excellent long-term reliability and stability in process applications.

Easidew PRO XP Easidew PRO XP
The Easidew PRO XP transmitter is designed to reliably and accurately measure dew point or moisture content in a wide variety of gas or liquid process applications.
Easidew TX I.S. Easidew I.S. Dew-Point Transmitter
The Easidew I.S. (intrinsically safe) transmitter is a dew-point transmitter designed and certified for use in hazardous area...
MDM300 & MDM300 I.S. MDM300 & MDM300 I.S.
A high-speed portable dew-point hygrometer, offering rapid spot-check measurements of dew point or moisture content...
Easidew Sampler
The Easidew Sampler is a general purpose sampling system that allows easy measurement of the dew...
Easidew Portable Easidew Portable
The Easidew Portable Hygrometer has been designed to make spot checks of the dew point in air and...
Pura Plus Pura Plus
Real time in-line trace moisture event sensor for UHP and semiconductor applications.
Easidew Online Easidew Online
A cost effective hygrometer with digital display, analogue and digital outputs and dual alarms...
Pura Pura
This small pure gas transmitter is a rugged, self-contained hygrometer designed specifically for...
DryCheck DryCheck
A simple and efficient, self-contained dew-point hygrometer, with filtration and flow control,...
Easidew 34 Dew-Point Transmitter Easidew 34 Dew-Point Transmitter
The Easidew 34 Dew-Point Transmitter is designed for ease of use. It has a 3/4" UNF process connection with form, fit and function...
Easidew Transmitter Easidew Transmitter
A low cost, 2-wire, rugged impedance dew-point transmitter for continuous measurement in...
Easidew PRO I.S. Easidew PRO I.S.
Intrinsically safe dew-point transmitter...
Cermet II Cermet II
The hygrometer of choice for the measurement of dew point, temperature, or gaseous moisture...
ES20 Compact Sampling System ES20 Compact Sampling System
The ES20 Compact Sampling System is designed to reliably and accurately measure dew point or moisture content in a variety of industrial gas applications.