● Option RS-485 communication interface, Modbus RTU protocol ● Physical switch：mbar / Pa / hPa / kPa / mmH2O / mmWS / inH2O / mmHg ● Square root function
The eYc PHM33 differential pressure transmitter is designed on the MEMS hot wire anemometer architecture, which has very good zero point stability and small differential pressure detection capability, high pressure resistance. The transmitter uses the pressure difference to pass a very small amount of gas through the air flow channel of the sensor body. Combined with the integrated circuit to convert into a differential pressure signal.
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Input type：Thermal differential pressure module Measuring range：0 ... 250 pa Output：0 ... 20 mA / 4 ... 20 mA / 0 ... 1 V / 0 ... 5 V /1 ... 5 V / 2 ... 10 V / 0 ... 10 V Signal connection：3-wire ModBus：RS-485 Load resistance(Current output)：4 ... 20 mA＜500 Ω / 0 ... 10 V≧10 KΩ Response time(t 63)：≦2 ms Display type：LCD Module with back light, double line character Display range(As unit is Pa)：V=Air velocity(at 25°C) / Q=Air quantity(with eYc AFMT) Height of character：5.56 mm Medium：Air Environment temperature：-20 ... +80°C(Non-display) / 0 ... +50°C(Display) Environment humidity：97%RH(Non-condensing) Storage temperature：-40 ... +80°C Accuracy：±0.5% of F.S. Temperature compensation：0 ... +70°C Temperature influence：±1.75%(-20°C ... 80°C) Power supply：DC 8 ... 35 V / AC 12 ... 30 V Current consumption：DC 8 V：≦120 mA(Display)；≦100 mA(Non-display) / DC 24 V：≦45 mA(Display)；≦40 mA(Non-display) / AC 12 V：≦140 mA(Display)；≦120 mA(Non-display) / AC 24 V：≦90 mA(Display)；≦80 mA(Non-display) Overvoltage protection：≦DC 40 V Electrical connection：M12 connector Installation：Wall IP rating：IP65(Cable)；IP67(M12) Electrical protection：■ Polarity protection ■ Over-voltage ■ Short circuit Pressure resistance：2 bar Burst pressure：5 bar Certification：CE Housing：Aluminum alloy Weight：Display：497 g；Non-display：478 g
*Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.
Exhaust emission / Environmental engineering / Air duct / Filter / Monitor differential pressure and environment air flow