DMD341 Compact Differential Air Pressure Sensor

Small size dp sensor for measuring differential air pressure on HVAC, compress air and pneumatic control systems.

Contents

Product Parameters

Pressure Ranges: from 0-6mbar up to 0-1000 mbar differential including bi-directional
Static Line Pressures: from 100 mbar up to 3000 mbar including on one port only
Accuracy: 0.35%FS >160mbar, 1% <=160mbar, 2%Fs <=20mbar (IEC60770)
Output Signal: 4-20mA, 0-20mA or 0-10V
Electrical Connections: DIN43650A plug, IP67 cable gland or M12 connector
Pressure Connnection: G1/8 female, 6.6mm dia pipe for 6mm dia flexible tubing
Special Features: Bi-directional pressure ranges
Media Compatibility: Non-aggressive gases and compressed air
Dimensions: 40 x 40 x 45 mm excluding connectors
Weight: ~250g

Product Description

The DMD 341 is a very small compressed air differential pressure sensor suited to installations inside compact systems requiring many sensors for monitoring the switching and delivery of compressed air to plant machinery. The DM341 can also be used to monitor high air flow rates in heating and air conditioning systems.

The DMD341 is used to measure pressures in the range of 0-6 mbar up to 0-1000 mbar differential.

Output signals of 4-20mA, 0-20mA or 0-10Vdc can be chosen for the DMD341 to suit the signal conditioning of most air handling management systems.

The low cost Aluminium construction and incorporation of, for air only sensor components, makes the DMD-341 an economical choice for large quantity applications.

For applications requiring the measurement of air pressure in both directions the DMD341 can be supplied with either 12mA +/-8mA, 10mA +/-10mA or 5Vdc +/-5Vdc signal out.

Product Applications

Climate chamber air filter

Measure the differential pressure across an air filter fitted in a climate chamber.

SKU ID: s1-dmd341-57-24611
Differential Pressure Range: 250 mbar
Output Signal: 4-20mA (2 wire)
Accuracy: 0.35% FS 160mbar & above, 1% FS 160mbar & below, 2% FS, 40mbar & below
Electrical Connection: DIN plug connector
Process Connection: G1/8 female
Media Compatibility: Non-aggressive gases and compressed air

Cooler fan air pressure

Measure the pressure difference generated by a cooler fan to control air temperature.

SKU ID: s1-dmd341-0003
Part No: 330-0060-1-G-100-Q00-6-000
Differential Pressure Range: 6 mbar
Output Signal: 4-20mA (2 wire)
Accuracy: 2% FS
Electrical Connection: DIN plug connector
Process Connection: G1/8 female
Media Compatibility: Non-aggressive gases and compressed air

Product Help

Inward air-flow DP sensor with 1 sec response time

We need a fast-responding (<1 second) differential pressure sensor to monitor a closed system, ensuring it maintains a slight negative pressure (-300 to -500 Pa) relative to ambient air. The sensor should have a bidirectional range of -20 to +20 mbar to accommodate potential positive pressure spikes. Essentially, we need a sensor that can quickly and accurately detect pressure imbalances to ensure air always flows into the closed system.

The DMD341 has response time of less than 5 milliseconds, and will measure the difference between the closed system and the surrounding air in both directions.

SKU ID: s1-dmd341-0005
Part No: 330-S020-3-G-TA0-Q00-6-000
Differential Pressure Range: -20 to +20 mbar
Output Signal: 0-10Vdc (3 wire)
Accuracy: 2% FS
Electrical Connection: Cable outlet with 2m PVC cable
Process Connection: G1/8 female
Media Compatibility: Non-aggressive gases and compressed air

Controlling atmospheric pressure

We require a fan system to speed up or slow down if air pressure is below or above atmospheric pressure in the sensing environment. According to our test results we find that the blower cannot exceed 500Pa.

To measure both negative and positive pressures no higher than 500Pa we would suggest The DMD 341 with a -6 to +6 mbar range.

SKU ID: s1-dmd341-0004
Part No: 330-S006-1-2-G-100-Q0096-000
Differential Pressure Range: -6 to +6 mbar
Output Signal: 4-20mA (2 wire)
Accuracy: 2% FS
Electrical Connection: DIN plug connector
Process Connection: G1/8 female
Media Compatibility: Non-aggressive gases and compressed air

Push & pull fans blockage monitoring

My application is in the cotton industry, and we would like to measure the pneumatic pressures from -100 to +100 mbar on our various push and pull fans to monitor for blockages. I am interested in a 12 +/- 8 mA option.

We would suggest the following DMD341 specification with a bi-directional range with 12mA output for a zero pressure reading:

SKU ID: s1-dmd341-0001
Part No: 330-S100-S1-8-100-Y00-6-000
Pressure Range: -100 to +100 mbar diff
Output Signal: 12+/-8 mA (2 wire)
Electrical Connection: DIN plug connector
Pressure Connection: 6.6mm dia tube for 6mm dia flexible tubing

Dust collector constant flow

We wish to control a VFD on a dust collector system with a DP sensor to maintain a constant flow and reduce energy costs. The typical DP readings are 1000-1500Pa. Can the DMD341 sensor do this?

We would suggest the DMD341 with a standard 0 to 20 mbar range which is equavalent to a 0 to 2000 Pa.

SKU ID: s1-dmd341-0002
Part No: 330-0200-1-3-100-Y00-6-000
Differential Pressure Range: 20 mbar
Output Signal: 4-20mA (2 wire)
Accuracy: 2% FS
Electrical Connection: DIN plug connector
Process Connection: 6.6mm dia tube for 6mm dia flexible tubing
Media Compatibility: Non-aggressive gases and compressed air

Request Product Price

Please select the options you require for the DMD341 Compact Differential Air Pressure Sensor in your application and request a quote.