Martindale DH85 Hygro-moisture Meter

The Martindale DH85 is a hygro-moisture meter giving accurate measurementsof moisture levels in materials and also measures air temperature and humidity of the environment. Seven different ranges (hard wood, soft wood, plaster, anhydrite screed, cement mortar, lime mortar and brick) can be selected. The DH85 has the facility to display the maximum reading, the minimum reading, the difference between maximum and minimum readings and the average of the recorded readings (Humidity and temperature measurements only). The backlit LCD screen also displays the temperature and humidity with a choice of units of measurement. As well as the usual hold, auto power off and backlit screen features, the DH85 also has a useful self-check function to ensure that the unit is working correctly at all times. FEATURES Suitable for wood, plaster & mortar. Relative humidity 0% to 100%. Display Hold & Min / Max readings. Backlit display. Auto power off. Martindale DH85 Specifications Range Resolution Accuracy Hard Wood - 8.8 to 54.8% 0.1% +1% (conductivity measurement). Soft Wood - 7.0 to 47.9% Plaster - 0.9 to 22.1% Anhydrite Screed - 0.0 to 11.0% Cement Mortar - 0.7 to 8.6% Lime Mortar - 0.6 to 9.9% Bricks - 0.1 to 16.5% Relative Humidity 0 to 100% RH 0.1% RH + 2.5% (10% to 90% R.H.) + 5% (0% to 10%, 90% to 100% R.H.). Sensor Information Sensor: Digital capacitive humidity sensor. Sensor response time for 90% of total range: 60 seconds typical. Sensor hysteresis (excursion of 10% to 90% to 10% R.H.): +1% R.H. typical. Temperature -20 to 60°C 0.1°C + 0.5°C (0°C to 45°C) + 1°C (-20°C to 0°C, 45°C to 60°C). -4 to 140°F 0.1°F + 1°F (32°F to 113°F) + 2°F (-4°F to 32°F, 113°F to 140°F). Sensor Type Thermistor temperature sensor Environmental Specifications Operating Environment -20 to 60°C. Storage Environment -20 to 60°C (<80% RH with batteries removed). EMC Conforms to BS EN61326-1. General Specifications Display Liquid crystal (LCD). Measurement Rate Once per second. Power 2 x 1.5V AAA alkaline batteries (IEC LR03, NEDA 24A). Continuous Operating Time 200 hours typical with alkaline battery. Low Battery Indication Symbol displayed when battery voltage drops below operating level. Auto Power Off Approx 10 minutes of inactivity. Dimensions (L x W x D) 133 x 51 x 25 mm. Weight 118g approx including batteries. Martindale DH85 warranty 2 years. All specified accuracies are at 23°C + 5°C, <70% R.H. for 1 year. Temperature coefficient: 0.1 x (specified accuracy) per °C, (-20°C to 18°C, 28°C to 60°C).

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