This guide will help you choose a digital pressure sensor for your application and explain the benefits of using a digital interface to transmit pressure readings.
There are many types of digital signal such as RS485, RS232, Modbus RTU, USB, SDI-12, I²C & IO-Link, but they all fundamentally transfer pressure readings without any loss of accuracy, and are the preferred type of pressure sensor for measuring pressures in calibration & test laboratories.
Products
Select a type of digital pressure sensor from the list below to view product choices and download product information or request a price quotation.
DCT 531 Modbus RTU RS485 Pressure Sensor - The DCT 531 digital pressure sensor has a Modbus RTU RS485 interface for transmitting pressure readings over a digital sensor network.
UPS-HSR USB Pressure Sensor with High Sample Rate Logging - USB ready digital pressure sensor for recording pressures with a high speed sample rate of up to 1 kHz to a computer.
DCT 533 IO-Link Interface Pressure Sensor - The DCT 533 digital pressure sensor has a IO-Link point-to-point communications interface for sending pressure readings to a IO-Link master.
Titan TPTd Digital Pressure Sensor - This compact ceramic sensing diaphragm pressure sensor has a I2C (Inter-Integrated Circuit) or SPI (Serial Peripheral Interface) protocol digital interface for reading the measured pressure with ranges from 0…0.5 bar (7.25 psi) up to 600 bar ( 8700 psi).
Titan TPTLRd Low Range Digital Pressure Sensor - This low range pressure sensor has a digital communications interface output and uses an oil filled silicon piezo-resistive sensing element housed in a robust stainless steel housing to measure pressure of liquid or gases.
DCT 532 I²C Pressure Sensor for TWI Communication - The DCT532 I²C pressure sensor has a I²C serial computer bus protocol interface for sending pressure readings over addressable digital communications.
- Pass/Fail timed 500 kPa pressure leak test software and sensor
- Power generation OEM engine oil pressure sensor with 75bar abs range and RS485
- Airflow and chamber pressure measurement for a portable modbus data acquisition trolley
- Modbus RTU pressure monitoring in data center chilled water cooling loops
- Acetonitrile and methanol gas monitoring with high overpressure protected pressure sensor
- 3000 psi leak test datalogging pressure sensor for certifying natural gas flow orifice fittings
- High Range USB Pressure Sensors - High-range pressure sensors with USB connectivity combine the ruggedness required for demanding high-pressure applications with the convenience and speed of digital data acquisition.
Digital Interface DP Sensors - Explore our range of differential pressure sensors featuring RS485, RS232, and USB digital interfaces.- High Speed USB Pressure Sensors - High-speed USB pressure transducers provide rapid pressure measurements and transmit data directly to a computer via a USB interface.
Low Range USB Pressure Sensors - Low range USB pressure sensors are suitable for monitoring pressure in cleanrooms, HVAC systems, and filter monitoring, among other applications.
Pressure Sensors for Data Logging with a Computer - Easily log and analyze pressure data on your PC. These digital sensors connect via serial interfaces and come with software for preset interval logging of fluids and gases.- Modbus Communications Protocol Pressure Sensors - Choose pressure sensors with Modbus communication for robust digital networking. Ideal for industrial automation, PLCs, and SCADA systems using RS-485.
Find out more about our Digital Pressure Sensors to determine which product options and capabilities will best meet your application requirements.
Advantages of using digital pressure sensors
For the highest possible pressure sensor accuracy you will need an output signal which is not easily corrupted and has a very high resolution.
Reduce Signal Losses & Interference
Digital output signals do not suffer from signal losses or interference like analogue ones do, either the complete signal gets through as originally transmitted from the pressure sensor or none at all.
In order to achieve a high resolution on the output signal a relatively powerful analogue to digital converter is needed of at least 16 bit resolution to achieve precision levels better than 0.01% full scale.
Reduce Analogue to Digital Conversion Errors
Also there is no need to convert a digital signal to analogue at any stage between the pressure sensor and the display or logging instrumentation since it can be easily interfaced to a computer or data acquisition card via a digital connection.
Digital Error Compensation
Another benefit of digital output signals is that the microprocessor inside the digital pressure sensor can also be used to digitally characterise the pressure sensor over many pressure and temperature points virtually eliminating all linearity errors.
Exploit Repeatable & Stable Sensor Technology
However the ultimate accuracy of a digital pressure sensor is always going to be limited by the hysteresis and repeatability of the sensor technology utilised. Hysteresis and repeatability factors are very unpredictable and cannot be characterised easily.
So a digital output has the potential to provide the most accurate signal for a particular type of pressure sensor but it has to be used in conjunction with stable sensing technology which has naturally low hysteresis and repeatability characteristics for it to be truly accurate over its operational life.
Direct Computer Interfacing & Software Monitoring
RS485 is the most used interface for general applications and manufacturers will often supply desktop software for communicating with the digital pressure sensor via RS232 or USB converter boxes.
Select a digital pressure sensor for your application
Find a pressure sensor with a digital interface for connecting to a digital device or computer.
If you would like us to select a pressure transmitter for you, then please use this form to specify your requirements.
Digital Interface Type
Choose a digital interface type to select a digital pressure sensor.
Pressure Range Type
Pick the type of pressure range you wish to measure digitally.
- Low pressure
- High pressure
- Differential pressure
- Hydrostatic pressure
- Barometric pressure
- Absolute pressure
Related Help Guides
- How to create a list of specification parameters for a pressure sensor
- Digital sensor for high precision pressure calibration
Related Product and Application Guides
Related Technical Terms
Related Online Tools
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