Absolute pressure (AP) transmitter 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.
Example Industrial Applications: 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.
Yokogawa absolute pressure transmitters use digital DPharp sensor technology to get accurate, reliable readings to you quickly.
Which Series is Right for You?
Click the 'Details' Tab above to learn which series is right for your application.
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EJA310E
Standard Traditional-mount Absolute Pressure Transmitter based on the EJA-E Series.
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EJX310A
Traditional-mount Absolute Pressure Transmitter based on the EJX-A Series as a high performance model.
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EJA510E
Standard 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 as a high performance model.
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EJX610A
High Performance In-Line Mount Absolute Pressure Transmitter based on the EJX-A Series.
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EJXC81A, EJAC81E (Absolute Pressure Diaphragm Seal)
Absolute Pressure Diaphragm Seal System consists of absolute pressure transmitter with single diaphragm seal.
Details
Which Series is Right for You?
Refer to the general specifications on each product page for detailed specifications.
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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 15 years | ● | |
| ± 0.2% of URL per 10 years | ● | |
| Response Time | ||
| 90 msec | ● | ● |
| Mounting | ||
| Traditional-mount | ● | ● |
| In-line Mount | ● | ● |
| Safety | ||
| FMEDA Report | ● | ● |
| IEC 61508 Certified (SIL 2) | ● | ● |
| Specification Conformance | ||
| ±3σ | ● | ● |
Important Notice
| Date | Remarks |
| 2024/12 | Important Notice for Safe Use of Products |
Resources
DP Level transmitter configuration can be very time consuming. Yokogawa DPharp EJA/EJX Pressure transmitters realize reduction in man hours by smart level setup feature.
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
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