Indoor Differential Pressure Transmitter

Indoor Differential Pressure Transmitter – Overview

This compact and easy-to-install sensor is a hot-wire type differential pressure sensor designed for small differential pressures and low air velocities. The built-in square root function is used for converting measurement into air velocity, and it provides flexible output options, making it an ideal choice for various differential pressure measurement applications. It has a high sensitivity at low differential pressure with low zero-point drift and a minimum measurable value as low as 1 Pa. It has a pressure resistance of up to 1 bar, and a differential pressure measurement range of ±50 … ±1500 Pa. There is also a DIP switch to adjust the range and square root function. Suitable for use in environmental monitoring (eg. clean rooms, HVAC) and differential pressure monitoring (eg. air ducts, filters, and airflow monitoring).

Indoor Differential Pressure Transmitter – Features

Suitable for HVAC and light industry
Measuring element: Hot-wire type diff. pressure sensor, flow-through
Measuring range : ±50 … ±1500 Pa
Output: 4 … 20 mA / 0 … 10 V / RS-485
Accuracy : ±1.5% F.S. ±3% M.V.
IP rating: IP65

Description

Indoor Differential Pressure Transmitter | PMM330

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 backlight, double line character

Display range

Upon request, 2 decimal places (as unit is Pa: 1 decimal place)

Digit height

5.56 mm

Accuracy (at 25°C)

Accuracy

±1.5% F.S. ±3% M.V.

Temperature influence

1% m.v. per 10°C

Environment

Measuring medium

Air

Operating temperature

0 … 50°C

Operating humidity

0 … 95%RH (Non-condensing)

Storage temperature

-20 … +60°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

M type ( M12 – 4 PIN connector ) / ( M12 – 5 PIN connector )

N type ( M16 plastic cable gland )

*M type with 2 m cable

Installation

Installation

Indoor wall type

Protection

IP rating

IP65

Electrical protection

■ Over-voltage

■ Reverse polarity

■ Short circuit

Pressure resistance

1 bar

Burst pressure

3 bar

Certification

Certification

Material

Housing

PC fire-proof class(PC-110)(UL94V-2)

Weight

Display: 152 g

Non-display: 127 g

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 connects with RS-485 are on common ground.

Indoor Differential Pressure Transmitter | PMM330

Indoor Differential Pressure Transmitter | PMM330

Indoor Differential Pressure Transmitter | PMM330