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HYGRASGARD® TW-extern - Modbus(-T3)(LCD)Patented quality product (pro-dynamic cross convection patent no. DE 10 2012 015 726.6) Calibratable dew point control switch HYGRASGARD® TW - Modbus - T3 (compact variant incl. strap) or TW - Modbus - external (detached variant), with Modbus connection, in an impact-resistant plastic housing with quick-locking screws, optionally with/ without display, to exactly detect the relative humidity (0…100% RH) and the temperature (–35...+80 °C) and to detect various parameters in humidity measurement. The dew formation in particular is reliably determined thanks to its patented measuring method, the pro-dynamic cross-convection (no conductivity measurement). International system of units SI (default) can be switched to Imperial (via Modbus). The surface-contact sensor is applied in a non-aggressive, dust-free environment and is suitable for installation in ceilings, ducts and devices. It is used in the refrigeration, air conditioning and clean room technology, engineering rooms, hotels and conference facilities. A long-term stable, digital humidity and temperature sensor guarantee exact measurement results. These measurands are used to internally calculate the following parameters that can be retrieved via Modbus: relative humidity, absolute humidity, mixture ratio, dew point, enthalpy (ignoring atmospheric air pressure) and ambient temperature. Innovative Modbus sensor with galvanically separated RS485-Modbus-interface, selectable bus termination resistance, DIP switch for setting the bus parameters and bus address in curent-free state, internal LEDs for telegram status display, two separate push-in terminals and large three-line display (illuminated; with customised programming in the 7-segment and dot-matrix range). The sensor is factory-calibrated; an environmental precision adjustment by an expert is possible.
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产品编号 1201-1281
Voltage supply 24 V AC (± 20 %) and 15…36 V DC Power consumption < 1.2 W/ 24 V DC; < 1.8 VA/ 24 V AC Data points Temperature [°C], relative humidity [% r. h.], dew point [°C], absolute humidity [g/ m3], mixture ratio [g/ kg], enthalpy [kJ/ kg] Deviation of humidity typical ± 2.0 % (20…80 % RH); at + 25 °C, otherwise ± 3.0 % Temperature deviation typically ± 0.2 K at +25 °C Sensor digital humidity sensor with integrated temperature sensor, low hysteresis, high long-term stability Sensor protection membrane filter Measuring range 0...100 % RH (humidity) – 35...+80 °C (temperature) Zero point offset ± 10 % r.H. (humidity) ± 5 °C (temperature) Ambient temperature –30...+70 °C Medium clean air and non-aggressive, non-combustible gases Bus protocol Modbus (RTU mode), address range 0...247 selectable Signal filtering 4 s / 32 s Process connection endless metal strap with metal tightener, 300 mm, for pipes up to 3 '' (included in scope of delivery) Electrical connection 0.2 - 1.5 mm², via push-in terminal Cable gland 2x M 20 x 1.5; with strain relief, exchangeable, inner diameter 8 - 13 mm Permissible air humidity < 95 % RH, non-precipitating air Protection class III (according to EN 60 730) Protection type IP 65 (according to EN 60 529)* Standards CE conformity, electromagnetic compatibility according to EN 61326, according to EMC Directive 2014/ 30/ EU |