Gauge Pressure

What Is a Gauge Pressure Transmitter?

A gauge pressure (GP) transmitter compares a process pressure against local ambient air pressure. Gauge pressure transmitters have ports to sample the ambient air pressure in real-time.

Today’s highly accurate gauge pressure sensors can be affected by fluctuations in the local ambient pressure. Measurements above the ambient air pressure are represented as a positive number, while a negative number represents measurements below ambient. A gauge pressure measurement is indicated by the letter ‘g’ following the unit of measure of the reading (i.e., inH₂O(g) or psig).

What Are the Benefits of Gauge Pressure Transmitters?

Yokogawa gauge pressure solutions include traditional mount and in-line mount transmitters, all featuring Yokogawa DPharp technology to deliver accurate, repeatable, and fast-responding gauge pressure measurements.

Common Industrial Applications

Open tank level
Line pressure in a pipe
Blanket pressure in a tank

Which Series Is Right for You?

View the comparison chart.

EJA530E

In-Line Mount Gauge Pressure Transmitter

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EJX530A

In-Line Mount Gauge Pressure Transmitter

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EJX630A

In-Line Mount High Performance Gauge Pressure Transmitter

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EJA430E

Traditional-mount Gauge Pressure Transmitter

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EJX430A

Traditional-mount Gauge Pressure Transmitter

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EJA440E

Traditional-mount High Gauge Pressure Transmitter

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EJX440A

Traditional-mount High Gauge Pressure Transmitter

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Which Series Is Right for You?

	EJA-E Series	EJX-A Series

Accuracy
± 0.025%		•
± 0.040%	•	•
± 0.055%	•
Stability
± 0.1% of URL per 15 years		•
± 0.1% of URL per 10 years	•
Response Time
90 msec	•	•
Safety
FMEDA Report	•	•
IEC 61508 Certified (SIL 2)	•	•
Specification Conformance
±3σ	•	•