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
Recordable indicator and sensor up to 30000 psi for pressure test rig - Accurate and reliable pressure measurement up to 30,000 psi with integrated data recording. Ideal for demanding pressure test rig applications.
Retrofitting ship bubbler tank gauging system with 22mm submersible level probe - A narrow 22mm diameter submersible level transmitter was used to replace an old bubbler system on a ship, providing an easy retrofit solution for fuel tanks without mechanical changes.
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
Event triggered high sampling rate pressure logger - This pressure logger can record for months at time at a slow logging rate, and when a predefined event threshold is exceeded it will record pressure at a much faster rate.
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.
Absolute Reference Pressure Range
Referenced to absolute zero pressure or a perfect vacuum
- a
- A
- abs
- ABS
Featured absolute reference related products
760mmHg absolute range digital vacuum gauge - Digital vacuum gauge for measuring over the 0 to 760mmHg (millimetres of Mercury) absolute pressure range. 
Near-atmospheric pressure transmitter for hazardous gas test chambers - Intrinsically safe pressure transmitter configured for a narrow, sub-atmospheric range to safely monitor dangerous gases in a test chamber.
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
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.
Pressure Calibrator for Pressure Transmitter Calibration – ADT672 - The ADT672 series of pressure calibrators are precision digital pressure gauges with electrical measurement for pressure transmitter calibration
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.
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