Differential Pressure Voltage Output Transducers

Differential pressure transducers with amplified volts output for measuring the dp of liquids and gases.

DP voltage output transducers are typically used on building management systems where a 0 to 10 volt dc signal is often used.

Amplified voltage output differential pressure transducers for dp measurement with 3 wire 0-5, 1-5, 0-10, 1-10 volt outputs.

Contents

Products

DMD331 Compact Differential Liquid Pressure Sensor - Wet wet differential pressure sensor with a high overpressure rating on both positive and negative pressure side for protection against damage.
DPS300 User Switchable Pressure Range, Volts or Current Output Low DP Sensor - The DPS 300 is a low range HVAC differential pressure sensor. The lowest possible pressure range is 0...100 pascals. 2 or 3 switchable pressure ranges, plus volts or current output are included with most standard configurations.

Application Specified Products

5 psi dp 0-10V out air pressure sensor for automation flow rate testing use on a 15psi line - A low range differential pressure sensor for manufacturing automation flow rate testing use to measure pressure of air over a range of 0 to 5 psi diff on a 15 psi air line from two G1/8 female process connections, and sending the corresponding 0-10Vdc signal through the integral cable electrical connection.
20 Pa DP range 0-10V output air pressure sensor for building management use - A low range differential pressure sensor for building management use to measure pressure of air over a range of 0 to 20 Pa diff from two barbed tubing connections, and sending the corresponding Other signal through the Other electrical connection.
Low delta P sensor with 200mmH2O range and response time < 5ms - The DMD331 uses silicon technology which is very small compared to other sensing technologies which would have a more limited response time.
10 mbar differential 0-10Vdc output air pressure sensor for building management use - A pressure sensor for building management use to measure pressure of air over a range of 0 to 10 mbar differential from two G1/8 female process connections, and sending the corresponding 0-10Vdc signal through the integral cable electrical connection.
10kPa differential range water pressure sensor & panel mount digital display - Sensor and panel indicator to monitor a pressure drop through a casting of up to 10 kilopascals.
1.5 inWG differential pressure transducer to control positive pressure inside a building - Low range differential pressure transducer to monitor difference of up to 1.5 inches of water gauge between outside pressure and inside pressure.
1 hPa Positive Room Pressure Sensor, Switch & Display - A 100 Pascal range positive room pressure sensor with a 0-10 volt analogue output signal relating to the inside/outside room pressure difference.
0.1 inH2O differential range 0-10Vdc output between rooms air pressure sensor - A pressure sensor for between rooms use to measure pressure difference of air over a range of 0 to 0.1 inH2O differential from two flexible tube connections process connections, and sending the corresponding 0-10Vdc signal through the pcb screw terminals electrical connection.
0-100Pa air pressure transducer with a 0-10V analog output - Air pressure transducer for measuring 0 to 100 pascals with an analog output signal of 0 to 10 volts.
1 psi delta air pressure sensor with 0 to 10 volt output - Delta pressure transducer for low range air pressure up to one psi with a zero to ten volt output signal.
Using 25 mbar DP sensor on vacuum below 0.2 bar absolute - I would like to measure a differential pressure of 0 to 25 mbar in a vacuum of < 0.2 bar absolute pressure.
50 psi wet/wet 0-10 volt output differential pressure transducer - Differential pressure transmitter for use on liquids with a measurement range of 0 to 50 psi diff on a maximum line pressure of 300 psi, and an output signal of 0 to 10 volts dc.

Sub-Product Types

Low Range DP Voltage Output Transducers - Low pressure range dp transducers for measuring draft pressures in ventilation systems or air extraction systems.

Product Help

Specifying voltage output differential pressure transducer requirements

Some questions to ask when defining the product requirements for a voltage output differential pressure transducer.

Differential pressure range

What is the highest differential pressure you need to measure?

Are the high and low pressure side always the same way round, or could they switch around? If the high and low pressure side is likely to reverse back and forth, then you will need to specify a bidirectional or compound range to cover the changing direction of pressure.

Do you need to change the dp range for a different process or location? Some differential pressure transducers allow the range to be adjusted by the user. Rangeable voltage signal dp transducers are adjusted manually by internal screws or buttons which are accessed by removing a waterproof lid or cap. Intelligent dp transmitters are adjusted via a in-built user interface, digital interface and associated software, or a special user hand terminal.

Static line pressure

What could be the highest pressure measured at either of the two process connections?

This is the general system pressure and is often significantly higher than the differential pressure measurement range. The static line pressure rating of amplified volts out dp transducers will vary enormously from one type to another, so it is important to pay special attention to this parameter, since it could lead to mechanical failure if an inadequate rating is selected.

Is there a risk that full static line pressure could be applied to one side of the voltage out differential pressure transducer? The line pressure rating does not necessarily mean that this pressure can be applied to one-side only. Most manufacturers will make it clear on their product data sheets whether the maximum static line pressure can only be applied on both sides simultaneously, or is protected from it being applied on one side only.

Overpressure

Is there a chance that the normal operating differential pressure range could be exceeded by a pressure surge or a process problem?

Maximum overpressure is the amount of differential pressure that the transducer can withstand beyond 100% of the dp range, without pushing the performance outside of specification limits.

The overpressure rating is typically expressed as multiples of the dp range, e.g. 2x, 4x.

Bidirectional or compound differential pressure ranges, which are a combination of a positive and negative pressure range component, should have two overpressure ratings.

If the volts output dp transducer will only allow full static line pressure to be applied to both sides at the same time, then take care to check the negative overpressure rating is adequate. Depending on the differential sensing technology utilised, the negative overpressure rating maybe significantly lower than the positive overpressure rating.

Where a voltage differential pressure transducer is protected against the full static line pressure being applied to one side only, then the positive and negative overpressure rating will equal the max static line pressure rating.

Checklist for voltage signal differential pressure transducer requirements

Define your volts output differential pressure transducer requirements using this checklist:

Differential pressure range?
Static line pressure?
Overpressure?
Media type?
Media temperature range?
Environmental conditions?
Signal output? 0-10Vdc
Power supply?
Measurement accuracy?
Electrical connection?
Process connection?
Certification?