● 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.
Input type：Thermo differential pressure module
Measuring range：0 ... 500 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
Accuracy(at 25°C)：±0.5% of F.S.
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
Compensation：0 ... +70°C
Temperature drift：±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.
The specifications contained herein are subject to change without notice and any user of said specifications should verify from the manufacturer that the specifications are currently in effect. Otherwise, the manufacturer assumes no responsibility for the use of specifications which may have been changed and are no longer in effect.Exhaust emission / Environmental engineering / Air duct / Filter / Monitor differential pressure and environment air flow
