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The easy-to-use Vaisala HM40 is a compact and portable humidity meter that provides reliable measurements in a wide range of applications. It is the ideal spot-checking tool for everything from structural moisture measurement and air conditioning systems to humidity measurement in industrial production processes and life science applications. The HM40 has a large, user-friendly graphical display and easy-to-use push buttons. In addition to relative humidity and temperature, the HM40 provides five calculated humidity parameters, all of which are available in metric and non-metric units. Included in delivery is a certificate of calibration which is traceable to national and international standards. There are four different models available: HM41, HM42, HM45, and HM46. Calibrating the HM40 is easy. The meter or the probe can be sent to a Vaisala Service Center for recalibration. Alternatively, calibration can be completed on site by users with a humidity reference such as the...

The DKRF670 Series by Driesen + Kern GmbH was developed for measuring humidity related parameters especially in industrial applications. All models have a relative humidity measuring range of 0...100%RH and can also measure temperature. Calculated variables such as absolute humidity (g/m3), dew point (°C), mixing ratio (g/kg) are optionally available. The series' measurements are very accurate for humidity (up to +/-1.8%RH) as well as temperature (up to +/-0.1K). An ISO9001 traceable certificate is included in delivery. Three analog output signals are provided for a customer-specific combination of the chosen parameters (relative humidity, temperature, absolute humidity, mixing ratio, dew point). Analog signals can be 0..1/0..5/0..10VDC, and also 4..20mA three-wire. The transducer's electronic circuits are integrated in a robust aluminium housing that is protected against dust and splash water according to protection class IP65, which makes the devices well suited for use in wet...