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MH8D46

MH8D46
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10/2016 • We reserve the right to make technical changes. • Digital sensor element All key sensor characteristics, settings, and adjustment data are saved in the sensor element itself. • Plug-in sensor element Spare elements are inexpensive; a replacement can be fitted on site quickly and easily by virtually anyone; it will be fully accurate straight away needing no special adjustment. • Digital transfer of measured values from the sensor element to the transmitter • Factory or DAkkS calibration is erformed on the sensor element alone. Fully accurate - irrespective of connecting cable and transmitter • Four climate variables can be measured: Double analog output for temperature and one humidity variable relative humidity / dewpoint / mixture ratio • Limit value relays available on request • The transmitters can be configured via the internal display and the keypad. • The analog output type (10 V or 20 mA) can be selected (via the keypad); the analog output range can be programmed. • Display of measured value, channel, units, humidity range, analog start, analog end, and analog type • The sensor tube can be connected either directly by plugging onto the transmitter itself or via a connecting cable. • Suitable for conduit mounting or wall mounting Output type Resolution Accuracy Temperature drift Time constant Connection Operative range Sensor -20 to +80 °C, 5 to 98 % RH Electronics -10 to +60 °C, IP65 Humidity sensor Measuring range 0 to 100 % RH Sensor CMOSens® technology Fixed measuring period / output period approx. 3 seconds Accuracy ±1.8 % RH in range 20 to 90 % RH ±2.3 % RH in range 10 to < 20 % RH at nominal temperature Hysteresis typical ±1 % RH Nominal temperature +25 °C Sensor operating pressure Atmospheric pressure Response time T63 typical 8 seconds at +25 °C, 1 m/s (without filter) Temperature sensor Sensor CMOSens® technology Fixed measuring period / output period approx. 3 seconds Accuracy ±0.3 K at +25 °C Response time T63typical 20 seconds (without filter) Outputs Double analog output Digital-to-analog converter (DAC) electr. isol. 0 to 10 V, load >100 kilohms 0 to 20 mA, load <500 ohms 0 to 10 V, 0 to 20 / 4 to 20 mA, selectable 16 bit 0.1 % of final value 10 ppm / K 100 ps Cable, via screwless clamp connector, with cable bushing Cable diameter 2 to 5 mm Limit value relays available on request Standard equipment Display, internal 2-row LCD 7 segments 4 1/2 and 5 characters 2 digits 16 segments Operation, internal3 keys Power supply DC voltage 9 to 30 VDC Current consumption 30 mA + 1.2-IOut Connection Cable, via screwless clamp connector, with cable bushing Cable diameter 2 to 5 mm Mechanical design Sensor tube Stainless steel, diameter 12 mm Protective cap_SK7, metal-mesh filter_ Housing Die-cast aluminum, closed cover Protective class IP65 (with sensor tube or connecting

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Display of measured values and programming (housing open) ■ 5 \°z Z3H5 Measured value display, channel M0, temperature Selecting the humidity variable, e.g. relative humidity, % RH Selecting the analog output type, e.g. 4 to 20 mA 10/2016 • We reserve the right to make technical changes. Accessories Angle bracket for wall mounting Rubber gasket (mat) for mounting the housing directly on a conduit wall (immersion depth = 42 mm plug length) Movable brass screw with plastic sealing ring (see page 08.05) Connecting flange for screw connection, pitch circle diameter 38 mm (see page...

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