Description Thermal Differential Pressure Transmitter | PHM330 Input Input type Thermal differential pressure module Measuring range 0 … 250 pa Output 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 K Ω Response time (t 63) ≦2 ms Display type LCD Module with backlight, 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 Environment 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(at 25°C) Accuracy ±0.5% of F.S Temperature influence ±1.75%(-20°C … 80°C) Temperature compensation 0 … 70°C Electrical 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 Installation Wall Protection IP rating IP65(Cable) ; IP67(M12) Electrical protection ■ Polarity protection ■ Over-voltage ■ Short circuit Pressure resistance 2 bar Burst pressure 5 bar Certification Certification CE Material Housing Aluminium alloy Weight Display: 497 g ; Non-display: 478 g Thermal Differential Pressure Transmitter | PHM330
