Differential Pressure (DP) transmitters measure the difference between two pressures. They use a reference point called the low-side pressure and compare it to the high-side pressure. Ports in the instrument are marked high-side and low-side. The DP reading can be either negative or positive depending on whether the low-side or high-side is the larger value. A DP transmitter can be used as a gauge pressure transmitter if the low-side is left open to the atmosphere.
Example Industrial Applications: Closed Tank Level, Density, Filter health, and DP Flow (Secondary Element)
Yokogawa gauge pressure transmitters use digital DPharp sensor technology to get accurate, reliable readings to you quickly.
Which Series is Right for You?
Click 'Details' above to learn more about each solution.
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EJA110E
Traditional-mount Differential Pressure Transmitter based on the EJA-E Series.
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EJX110A
Traditional-mount Differential Pressure Transmitter based on the EJX-A Series.
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EJA130E
Standard Traditional-mount High Static Differential Pressure Transmitter based on the EJA-E Series.
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EJX130A
Traditional-mount High Static Differential Pressure Transmitter based on the EJX-A Series as a high performance model.
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EJXC40A (Digital Remote Sensor)
Digital Remote Sensor (DRS) Transmitter connects two pressure sensors, primary (high-pressure side) and secondary (low-pressure side) in a remote location, with DRS dedicated communication cable to measure differential pressure.
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EJXC80A, EJAC80E (Differential / Gauge Pressure Diaphragm Seal)
Diaphragm Seal System consists of differential pressure or gauge pressure transmitter with one or two diaphragm seal.
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EJXC80A, EJAC80E (Differential Pressure Direct Mounted Seal)
Direct Mounted Diaphragm Seal System consists of differential pressure transmitter with single direct mount diaphragm seal.
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EJA120E
Standard Traditional-mount Differential Pressure Transmitter designed for Draft Range applications based on the EJA-E Series.
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EJX120A
Traditional-mount Differential Pressure Transmitter designed for Draft Range applications based on the EJX-A Series as a high performance model.
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 | ||
| ± 0.025% | ● | |
| ± 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) | ● | ● |
| Multi-sensing | ||
| Differential Pressure | ● | ● |
| Static Pressure | ● | ● |
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.
Yokogawa DPharp EJA/EJX Pressure transmitters do not need frequent re-zeroing due to superior long term stability, it contributes to reduce maintenance time.
Differential pressure level measurement has an enemy- temperature. Temperature can have a negative effect on the accuracy of level measurement. This article covers why temperature has this effect and how it can be reduced.
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