PMD330 Differential Pressure Transmitter (Indoor)
Model :
PMD330
Features : Suitable for HVAC and light industry.
Sensor type : Piezoelectric differential pressure module
Measuring range：±50 ... ±10000 pa
Output : 4 ... 20 mA / 0 ... 10 V / RS-485
Accuracy : ±2.0% F.S.
IP rating : IP65
Sensor type : Piezoelectric differential pressure module
Measuring range：±50 ... ±10000 pa
Output : 4 ... 20 mA / 0 ... 10 V / RS-485
Accuracy : ±2.0% F.S.
IP rating : IP65
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Features● Silicon chips on differential pressure module of MEMS integration technology
● Offset function / UI software
● Low-pressure monitoring, high pressure resistance
● RS-485 communication interface(Optional), Modbus RTU protocol
● Physical unit switch(User Interface)：mbar / Pa / hPa / kPa / mmH2O / mmWS / inH2O / mmHg
● Square root function -
ApplicationsMonitor differential pressure of cleanroom / Hospital / Air duct / Filter environment and monitor air flow
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SpecificationInput
Input type : Piezoelectric differential pressure module
Measuring range : ±50 ... ±10000 pa
Output
Output : 4 ... 20 mA / 0 ... 10 V / RS-485
Signal connection : 3-wire
Load resistance (Current output) : 4 ... 20 mA ＜ 500 Ω；0 ... 10 V≧1 KΩ
Response time(t63) : ≦2 ms
Display type : LCD module with back light, double line character
Display range : Upon request, 2 decimal place (as unit is Pa : 1 decimal place)
Digit height : 5.56 mm
Environment
Measuring medium : Air
Operating temperature : 0 ... 50°C
Operating humidity : 0 ... 95%(Non-condensing)
Storage temperature : -20 ... +60°C
Accuracy (at 25°C)
Accuracy : ±2.0% of F.S
Temperature influence : ±1.75%(5 ... 55°C)
Electrical
Power supply : AC 24 V ±10% / DC 24 V ±10%
Current consumption : DC 24 V：≦45 mA(Display) / ≦40 mA(Non-display)；AC 24 V：≦95 mA(Display) / ≦90 mA(Non-display
Overvoltage protection : ≦DC 40 V
Electrical connection : M type ( M12 - 4 PIN connector ) / ( M12 - 5 PIN connector )
N type ( M16 plastic cable gland )
Installation
Installation : Indoor
Protection
IP rating : IP65
Electrical protection : ■ Reverse polarity ■ Over-voltage ■ Short circuit
Pressure resistance : ±50 ... ±500 pa：0.25 bar / ±1000 ... ±10000 pa：0.5 bar
Burst pressure : ±50 ... ±2500 pa：0.75 bar / ±5000 ... ±10000 pa：1.25 bar
Certification
Certification : CE
Material
Housing : PC fire-proof class(PC-110)(UL94V-2)
Weight : Display：152g；Non-display：127g
Note : Design and specifications are subject to change without notice.
Note : If the product has RS-485 function, to avoid damaging product, please make sure the product and the device which connect with RS-485 are on common ground.