Absolute pressure (AP) transmitters measure relative to perfect (full) vacuum pressure (absolute zero pressure); therefore, AP transmitters are not affected by fluctuations in the local atmospheric pressure. All absolute pressure measurements are positive. The letter ‘a’ or the abbreviation ‘abs’ in the unit of measure (i.e., inH₂O(abs) or psia) indicates an absolute pressure measurement.
Yokogawa absolute pressure transmitters use digital DPharp sensor technology to get accurate, reliable readings to you quickly.
Which Series is Right for You?
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EJA310E
Traditional-mount Absolute Pressure Transmitter based on the EJA-E Series.
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EJX310A
- EJX310A Traditional-mount Absolute Pressure Transmitter
- ± 0.075% Accuracy
- ± 0.2% per 15 years Stability
- 90 ms Response Time
- Exida and TUV SIL 2/3 Certification
- LPS
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EJA510E
In-Line Mount Absolute Pressure Transmitter based on the EJA-E Series.
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EJX510A
In-Line Mount Absolute Pressure Transmitter based on the EJX-A Series.
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EJX610A
High Performance In-Line Mount Absolute Pressure Transmitter based on the EJX-A Series.
Details
What is Absolute Pressure?
Measured in PSIA, (pounds per square inch absolute) absolute pressure refers to pressure detected in relation to a vacuum, a.k.a. absolute zero pressure. That's how absolute pressure transmitters relate to vacuum transmitters.
Industrial Applications of Absolute Pressure Devices
Pipe, tank, and substance pressure measurement and regulation:
- Food and beverage
- Lab
- Industrial
Benefits of Absolute Pressure Devices
Process and loop monitoring for open tanks and vessels
Example Industrial Application: Any critical storage and delivery application (i.e., toxic gases) Because atmospheric conditions can fluctuate, it is imperative that these systems be accurate and use a reference that is static.
Which Series is Right for You?
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EJA-E Series | EJX-A Series | |
---|---|---|
Accuracy | ||
± 0.04% | • | • |
± 0.055% | • | |
± 0.075% | • | |
± 0.10% | • | |
Stability | ||
± 0.2% of URL per 10 years | • | |
± 0.2% of URL per 7 years | • | |
± 0.1% of URL per 1 year | • | |
Response Time | ||
90 msec | • | • |
Mounting | ||
Traditional-mount | • | • |
In-line Mount | • | • |
Safety | ||
FMEDA Report | • | • |
IEC 61508 Certified (SIL 2) | • | • |
Specification Conformance | ||
±3σ | • | • |
Resources
Yokogawa DPharp EJA/EJX Pressure transmitters do not need frequent re-zeroing due to superior long term stability, it contributes to reduce maintenance time.
Download this eBook and learn:
- The basic physics of pressure
- Different types of pressure sensors
- Features of pressure transmitters
- Pressure transmitters communications standards
- Key characteristics of pressure
- Common types of diaphragm seals
Downloads
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