Differential Pressure Transmitters

Our differential pressure transmitters feature Yokogawa DPharp technology to deliver accurate, repeatable, and fast-responding measurements. Traditional mount or remote diaphragm seal mount configurations are available.

How Does a Differential Pressure Transmitter Work?

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 level transmitter 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.

Common Industrial Applications

  • Closed Tank Level
  • DP Flow (Secondary Element)
  • Filter health
  • Density

What are the Different Types of Pressure Measurement?

View the comparison chart.

  • EJA110E

    • DP Accuracy: ±0.055% of Span
    • Stability: ±0.1% of URL per 10 years
    • Static Pressure Accuracy: ±0.5% of Span
    • MWP: 2,300 psi
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  • EJX110A

    • DP Accuracy: ± 0.04% of Span
    • Stability: ± 0.1% per 15 years
    • Static Pressure Accuracy: ±0.2% of Span
    • MWP: 3,600 psi
    See More
  • EJA118E

    • DP Accuracy: ± 0.2% of Span
    • Response Time: 200 msec 
    • Static Pressure Accuracy: ±0.5% of Span
    • MWP: Up to flange rating
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  • EJX118A

    • DP Accuracy: ± 0.15% of Span
    • Response Time: 200 msec
    • Static Pressure Accuracy: ±0.2% of Span
    • MWP: Up to flange rating
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  • EJA130E

    • DP Accuracy: ± 0.055% of Span
    • Stability: ± 0.1% of URL per 10 years
    • Static Pressure Accuracy: ±0.5% of Span
    • MWP: 4,500 psi
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  • EJX130A

    • DP Accuracy: ± 0.04% of Span
    • Stability: ± 0.1% of URL per 15 years
    • Static Pressure Accuracy: ±0.2% of Span
    • MWP: 4,500 psi
    See More
  • EJX120A

    • Accuracy: ± 0.09% of Span
    • Stability: ± 0.15% of URL per 1 year
    • Draft Range
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  • EJXC40A (DRS)

    • DP Accuracy: ±0.055% of Span
    • Stability: ±0.1% of URL per 10 years
    • Static Pressure Accuracy: ±0.04% of Span
    • MWP: Up to flange rating
    See More

Details

Which DP Level Transmitter Series Is Right for You?

  EJX-A Series EJX-A Series
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

How Does a Differential Pressure Transmitter Work?

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.

Resources

Overview:

Yokogawa DPharp EJA/EJX Pressure transmitters do not need frequent re-zeroing due to superior long term stability, it contributes to reduce maintenance time.

Industries:
Overview:

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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