The testo 635-1 temperature and humidity measuring instrument enables you to measure the temperature, air humidity and dew point – in compressed air as well. State-of-the-art technology and a large selection of probes, which are available as an option, enable this wide variety of measuring possibilities.

The testo 635-2 temperature and moisture meter allows you to carry out temperature and moisture measurements on a variety of different materials, surfaces and environments. This is made possible due to leading-edge technology and a wide selection of optionally available sensors.

This ISO calibration certificate certifies that your measuring instrument or probe is calibrated. Calibration is carried out according to the ISO standard.

ISO humidity calibration certificate - with selectable measuring points

ISO calibration certificate/humidity

footer

imprint

Terms and conditions

privacy-policy

header

Choose Your Country

Home 2025

Service

Solutions

Company

dealer-locator

contact

feedback

logins

testo-saveris-footer

Terms and Conditions

testo-saveris-header

HQ instrument 

Saveris-Home

Product-/housing material	paper
Product colour	white

ISO humidity calibration certificate - with selectable measuring points

ISO humidity calibration certificate - with selectable measuring points

General technical data