Hygrometers & Humidity Meters (80 Products)

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  1. Protimeter BLD7750-FL Hygromaster2 Flooring Kit All Protimeter Products
    Due In: 1-6 Days
    Free Delivery  
    Protimeter BLD7750-FL Hygromaster2 Flooring Kit
    £1,215.43 £1,012.86
    • Includes the Protimeter Hygromaster2 and a selection of accessories optimised for in situ, ASTM F2170 complaint moisture measurements of concrete floors
    • Hygromaster2 functions as a thermometer and hygrometer
    • Ranges: 30-100% RH; temperature: -20°C and 80°C / -4°F and 176°F
    2,024 Reward Points
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    SKU: BLD7750-FL
  2. Fluke 1620A-X-256 DewK Thermo-hygrometer – Choice of Sensor All Fluke Products
    Made to Order
    Fluke 1620A-X-256 DewK Thermo-hygrometer - Choice of Sensor
    Call for Pricing
    • Measure temperature and relative humidity via each channel simultaneously
    • Capacity to gather and display data for up to two channels at the same time
    • Available in three models with different sensors
    We require additional information before you purchase this product.
    Call 01642 931 329
    SKU: Fluke 1620A-X-256
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About Hygrometers & Humidity Meters

Our environment is made of several different elements. While we generally think of oxygen, carbon dioxide and even nitrogen as forming the bulk of the Earth's atmosphere, water content in the air is also constantly present.  A good quality humidity tester is useful for those who routinely find themselves working in humid environments.

If you've got a lot of people working in one place, keeping the humidity in check is essential. Many people become uncomfortable in humid environments and can even suffer adverse health effects if they are exposed for long enough periods. Asthmatics are particularly affected by humid environments.

It is therefore important for you to regularly test the humidity of an environment in order to ensure the safety of yourself and your workforce. Tester's range of humidity testers come from industry-leading suppliers around the globe, providing excellent readings and testers that don't break the bank due to our low prices.

High humidity, along with temperature, also affects electronic circuits and machinery, so if you want to keep your installation working within safe limits a hygrometer will be a worthwhile investment. Here are some of the effects you can expect:


Temperature Effect

Humidity Effect

Ceramic capacitors

Changes in dielectric constant and capacitance, lowered insulation resistance with high temp.


Electrolytic capacitors

Increased electrolyte leakage; shortened life, large change in capacitance, increased series resistance with low temp.

Decreased insulation resistance increased dielectric breakdown increase in shorts

Tantalum Capacitors

Electrolyte leakage; change in capacitance insulation resistance; series resistance

Decreased insulation resistance increased dielectric breakdown increase in shorts


Increased leakage current; changes in gain; increases in opens and shorts

Increased leakage current; decreased current gain , if sealed not effect

Standard Connectors

Flash over, dielectric damage

Shorts fungus; corrosion of contacts lowered insulation resistance





Oxidation of contacts

Contact arcing


Increased shorts and opens

Change in resistance

Humidity sensors are also quite commonly referred to as hygrometers. These devices are generally defined into two separate types - humidity meters and humidity sensors. The major difference between the two is that humidity meters are designed as handheld, portable instruments to be carried out and test various different applications; a humidity sensor is designed to be mounted in one location such as a wall and will constantly catalogue the humidity (and other parameters such as temperature) in the environment it is placed in.

A humidity sensor is an extremely beneficial tool in a wide variety of applications. Whether its simply maintaining the humidity levels in an office or ensuring that excessive water content isn't in the air when storing delicate materials such as wood, these sensors help to alert users when humidity is too high and action must be taken.

Many humidity meters include the ability to measure dewpoint, which is basically when water vapour in an area starts to condense into liquid water. By determining this value users can ensure that humidity in the air doesn't get the chance to turn into water, and this in turn increases safety and stops damage to properties and components.

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