There is a loose convention across manufacturers for designating the type of reference that a pressure sensing device has, which can be confusing if you are unfamiliar with specifying this often overlooked but critical specification parameter.
To help identify the reference of a particular pressure range found on a product label or technical data sheet a list of abbreviated suffixes is provided below.
Vented Gauge Reference Pressure Range
Measuring pressure with reference to atmospheric pressure, also referred to as Relative and Vented Gauge:
- g
- G
- rel
- REL
- vg
- VG
Featured vented gauge reference related products
KL1 Cable Junction Box for Submersible Level Transmitters - Robust cable junction box for terminating vented electrical cable from a submersible level transmitter. vented to the outside air pressure.
Monitoring groundwater level in jet fuel contaminated wells using SDI-12 hydrostatic sensor - Monitor fluid levels in underground wells containing water and Jetfuel A1 mixtures using SDI-12 protocol hydrostatic level sensors
Sealed Gauge Reference Pressure Range
Not vented to atmospheric pressure, but instead the reference is fixed to 1 bar.
- sg
- SG
Featured sealed gauge reference related products
Water system peak demand pressure and flow data logger - Identify peak demand and low-pressure events in your water system with the P-Triton-PF data logger. User-configurable logging regimes, 5-year battery life, and IrDA wireless communication.
Sonde OEM water depth sensor for 300m deep borehole - We are looking to integrate a pressure sensor into the bottom of a Sonde. The sensor will be used to monitor the water depth in a borehole up to a maximum of 300m.
Absolute Reference Pressure Range
Referenced to absolute zero pressure or a perfect vacuum
- a
- A
- abs
- ABS
Featured absolute reference related products
300°C max temperature, 0 to 300 bar, high range pressure sensor - The 35X HTC can measure up to 300 bar (and higher if necessary) on media up to temperatures of 300 degC max.
Waterproof Absolute Pressure Sensors - Discover robust waterproof absolute pressure sensors, ideal for reliable underwater pressure and level measurement where vented sensors are impractical. Learn how readings convert to gauge pressure. Suited for subsea, borehole, and marine deployments.
Differential Pressure Range
The difference in pressure at point B compared to the pressure at point A.
- d
- D
- diff
- DIFF
- dp
- DP
Featured differential pressure related products
10Pa diff range 0-20mA output air pressure sensor for automotive component testing - A very low range pressure sensor for automotive component testing use to measure pressure of air over a range of 0 to 10 Pa diff from two barbed tube hose connections, and sending the corresponding 0-20mA signal through the DIN plug electrical connection.
Low Differential Pressure Transmitters - Select highly sensitive low DP transmitters designed for critical applications like ventilation control, hospital isolation rooms, and laboratory environments. Features include 4-20mA signals, displays, and alarm contacts.
On product marking labels or any document that includes a description of the pressure range, the reference type is included after the pressure unit type e.g. 15 psi abs or 15 psia.
Related Help Guides
- Measuring vacuum with negative gauge or absolute ranges
- What is the difference between gauge and absolute pressure measurement
- What does negative and positive gauge pressure mean
- Measuring negative pressure using a positive differential pressure range
- Not reading zero when pressure is vented to atmosphere
- What is the difference between sealed gauge and vented gauge reference?
- Can you measure vacuum using a gauge pressure range
- Can you have a minus 20 psi gauge vacuum measurement range
- How do you choose the correct pressure range for a pressure sensor
- Simulating 8000 foot altitude with a pressure gauge
- Using an Absolute Sensor to Measure Gauge Reference Pressure
- Converting non-vented depth readings & barometric pressure to true depth
- Using Sealed Gauge Reference Pressure Sensing Devices
- Output signal orientation for a negative gauge pressure range
Related Technical Terms
- Gauge Reference Pressure
- MSL – Mean Sea Level
- Negative Gauge Pressure
- Reference Pressure
- SG – Sealed Gauge
- Vented Cable
- Vented Gauge
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