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H813 Dew Point Hygrometer

产品时间:2022-03-04 10:24:43

简要描述:

● Direct Measurement of Ambient Dew Point ● Allows Sampling of Air From Remote Locations e.g. Air Ducts ● Rapid Operation and Reversibility. Allows Repeat Measurements by Many Students. ● Electrically

详细介绍

● Direct Measurement of Ambient Dew Point 

● Allows Sampling of Air From Remote Locations e.g. Air Ducts 

● Rapid Operation and Reversibility. Allows Repeat Measurements by Many Students. 

● Electrically Driven. No Flammable Solvents Required for Operation

Introduction 

The Hilton H813 Dew Point Hygrometer allows rapid demonstration and measurement of the ambient Dew Point by the chilled mirror principle. 

The unit is bench mounted and self-contained having its own low voltage electrically driven cooler and will provide interesting and instructive experimental work for all students studying psychrometry. The unit will be of particular interest to students in the following disciplines: 

 Thermodynamics 

 Heat Transfer 

 Chemical Engineering 

 Mechanical Engineering 

 Plant and Process Engineering 

 Refrigeration 

 Air Conditioning

Experimental Capabilities 

 Measurement of ambient dew point using the chilled mirror method. 

 Measurement of dew point of air sampled from an air duct or other source.

Description and Operation 

A circular polished and chrome plated mirror is enclosed on one face by a cylindrical tube with a clear window. Air is drawn into the enclosure by an small air pump either from the surrounding ambient or from another source. 

The mirror is cooled electronically and its temperature is recorded by a close tolerance thermometer located at its geometric centre. 

The operator controls the rate of cooling by pressing a switch on the unit. The temperature at which mist is seen on the mirror is the dew point and this temperature is recorded by the operator. A second identical thermometer for recording the dry bulb temperature is also supplied. These two values allow either direct calculation of the air condition or determination of the air condition from the charts supplied 

As the mirror is electrically cooled, unlike the more traditional evaporative instruments, the process is quickly reversible allowing repeated measurements thereby maintaining a high degree of student interest.


 


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