Differential Pressure

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

What is a Differential Pressure Transmitter?

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.

Common Industrial Applications

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

Which Series is Right for You?

View the comparison chart.

    • 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
    • DP Accuracy: ± 0.04% of Span
    • Stability: ± 0.1% per 15 years
    • Static Pressure Accuracy: ±0.2% of Span
    • MWP: 3,600 psi
    • DP Accuracy: ± 0.2% of Span
    • Response Time: 200 msec 
    • Static Pressure Accuracy: ±0.5% of Span
    • MWP: Up to flange rating
    • DP Accuracy: ± 0.15% of Span
    • Response Time: 200 msec
    • Static Pressure Accuracy: ±0.2% of Span
    • MWP: Up to flange rating
    • 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
    • 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
    • Accuracy: ± 0.2% of Span
    • Stability: ± 0.3% of URL per 1 year
    • Draft Range
    • Accuracy: ± 0.09% of Span
    • Stability: ± 0.15% of URL per 1 year
    • Draft Range
    • DP Accuracy: ±0.056% of Span
    • Stability: ±0.1% of URL per 10 years
    • Static Pressure Accuracy: ±0.04% of Span
    • MWP: Up to flange rating

Which 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
Pressure - Low Cut Output Signal With some applications, the output signal can be erratic as the input nears the zero point. One of the most common applications with this issue is differential pressure flow measurement. A differential pressure (DP) ...
Edition 1

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