When browsing through pressure measurement products you will notice that some of the products are called pressure transducers and others are called pressure transmitters.
A pressure transducer is any device that fundamentally converts an applied pressure into an electrical signal. There have been many different types of pressure transducer developed over the years such as bonded foil, thick film, thin film, variable capacitance, LVDT & semiconductor strain gauge to name just a few. All of these sensing technologies are used to convert a pressure into a measurable electrical signal.
Since the transducer core signal varies significantly from one device to another it is often necessary to add some electronic compensation to trim the zero & span offsets and reduce thermal sensitivity over the operating temperature range.
Featured millivolt output pressure transducer products
TM Silicon Strain Gauge Pressure Transducer - Passive compensated pressure transducer with a four arm semiconductor Wheatstone bridge circuit which produces a 100 millivolt with a 10 volt excitation.
TPF Flush Diaphragm Strain Gauge Pressure Sensor - Flush diaphragm piezo-resistive pressure sensor for food processing and plastic injection moulding applications with a millivolt output signal in pressure ranges from 10 up to 1000 barg.
Some pressure transducers are manufactured without any compensation circuitry which are called pressure transducer capsules, modules or headers. These pressure transducer elements and then integrated with electronics by instrument manufacturers to compensate the pressure transducer, and bring the output signal within the design parameters required by the instrumentation specification.
Due to the weak signal generated by the pressure transducer, it is only used over relatively short distances, such as inside a test laboratory or inside some instrumentation. When you want to run the electrical output signal over greater distances, some additional electronics is required to boost the signal. This is when it is necessary to add an amplifier to a pressure transducer to transmit the signal. A pressure transducer which has been combined with an output signal amplifier is typically called a pressure transmitter.
Featured amplified voltage signal pressure transducer products
DPS Low Differential Pressure Transmitter - Ultra low differential pressure transmitter for HVAC applications with 4-20mA current loop or amplified voltage output signal in pressure ranges from 0.1 mb up to 1 bar differential. 
DPS200 HVAC Differential Pressure Transmitter - Differential air pressure sensor with a 10 volt or a 4-20mA output for building ventilation applications. Ranges from 0 to 6 mbar up to 0 to 1000 mbar.
Many types of amplified signals have been developed over the years as electronics have advanced and power considerations have changed, the most common type are 4-20mA current loop pressure transmitters and amplified voltage output pressure transducers.
Despite the distinguishing technical differences between a pressure transducer and a pressure transmitter, both have become synonymous with describing any type of pressure sensor, and are often interchanged by different manufacturers. So from a marketing and product naming point of view there is no common distinction between the two types of pressure sensor.
Featured amplified current signal pressure transducer products
ATEX Approved Pressure Transmitters - Choose certified ATEX pressure transmitters for Zone 0, 1, and 2 environments. Essential for preventing ignition in refineries, chemical plants, and gas pipelines.- Differential Pressure Transmitters - Differential pressure transmitters for measuring the DP of fluids and gases across particle filters and along a length of pipe to monitor flow.
Related Help Guides
- How to Connect a 4-20mA Current Loop Pressure Transmitter
- Symptons and Causes of Damage to Pressure Transducer Diaphragms
- Supply voltage and load resistance considerations for pressure transmitters
- Pressure Sensor Accuracy Specifications
- What is difference between working, burst and over pressure
- Measuring vacuum as a negative gauge pressure using a dp sensor
- Measuring liquid level in a tank using a dp sensor
- Measuring density of a liquid using a dp sensor
- Pressure Sensor Technology Comparative Guide
Related Technical Terms
- Ceramic Pressure Sensors
- Digital Compensation
- Dry Cell
- Dry/Dry
- HART®
- Isolation Diaphragm
- LVDT – Linear Variable Differential Transformer
- Pressure Sensors
- SOI – Silicon on Insulator
- Stainless Steel Pressure Sensors
- Static Line Pressure
- Wet/Dry
- Wet/Wet
Related Online Tools
- Pressure Transmitter 4-20mA Current Output Calculator
- Pressure Sensor Calculator
- DP Flow Transmitter Output Calculator
- Pressure Transducer Millivolt (mV) Output Calculator
- Pressure Transducer 0-10V Voltage Output Calculator
- Pressure Transducer 0-5V Voltage Output Calculator
- Pressure Transducer 1-5V Voltage Output Calculator
- Pressure Transducer 0.5-4.5V Voltage Output Calculator
- Pressure Sensing Errors Calculator
- Pressure Transmitter 0-20mA Current Output Calculator
