● Uses hot-wire type differential pressure sensor
● High sensitivity at low differential pressure, low zero-point drift, minimum measurable value as low as 1 Pa
● Pressure resistance up to 1 bar, differential pressure measurement range of ±50 ... ±1500 Pa
● Aluminum alloy housing, IP65 protection rating
● Includes square root function for converting into air velocity and airflow, and simultaneous display on the screen
● Provides analog output with RS-485 communication function
● DIP switch to adjust range and square root function
The eyc-tech PHM330 differential pressure transmitter, equipped with an aluminum alloy housing, is less affected by the external environment, ensuring stable and reliable airflow measurement. Its sensing element
is a hot-wire type sensor, providing excellent zero-point stability and the ability to detect low differential pressures, allowing for precise measurements at low air velocities.
Measurement
|
Measuring element
|
Hot-wire type diff. pressure sensor, flow-through
|
Measuring range
|
±50 ... ±1500 pa
|
Output
|
Output
|
4 ... 20 mA / 0 ... 10 V / RS-485
|
Signal connection
|
3-wire
|
Load resistance
|
Current output : ≦500 Ω
Voltage output : ≧ 10 KΩ
|
Response time
|
t63 ≦ 2 ms
|
Display type
|
LCD Module with back light,
double line character
|
Display range
|
V=Air velocity (at 25°C)
Q=Air quantity (with eyc-tech AFMT)
|
Digit height
|
5.56 mm
|
Accuracy
|
Accuracy
|
±1.5% F.S. ±3% M.V.
|
Temperature influence
|
1% m.v. per 10°C
|
Environment
|
Measuring medium
|
Air
|
Operating temperature
|
-20 ... +80°C (Non-display)
0 ... +50°C (Display)
|
Operating humidity
|
0 ... 95%RH (Non-condensing)
|
Storage temperature
|
-20 ... +80°C
|
Electrical
|
Power supply
|
DC 24 V ± 10 % & AC 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
|
M12 connector
|
Installation
|
Installation
|
Wall
|
Protection
|
IP rating
|
IP65
|
Electrical protection
|
■ Over-voltage
■ Reverse polarity
■ Short circuit
|
Pressure resistance
|
1 bar
|
Burst pressure
|
3 bar
|
Certification
|
Certification
|
CE
|
Material
|
Housing
|
Aluminum alloy
|
Weight
|
Display : 497 g
Non-display : 478 g
|
Exhaust air treatment / Differential pressure monitoring / Airflow monitoring / Water treatment / Air handling unit flow
Taiwan
