The Yokogawa EJA120A is a high-performance differential pressure transmitter. It is used for measuring differential pressure in liquids, gases, and vapors, converting this measurement into a 4-20 mA DC output. The device is suitable for applications that require accurate pressure measurement, including industrial process control and monitoring.

Technical Specifications

• Measurement Type: Differential pressure (liquids, gases, vapors)
• Output Signal: 4-20 mA DC (linear output)
• Wetted Parts Material: Code ‘S’, silicone oil
• Reference Accuracy:
  • ±0.2 % of Span
  • ±0.1 % of Span with /HAC option
• Span Accuracy for X:
  • For spans below X: ±[0.15 + 0.02] % of Span
  • With /HAC: ±[0.05 + 0.05] % of Span
  • X = Capsule X kPa {inH2O}, E = 0.4 {1.6}
• Square Root Output Accuracy:
  • 50 % or greater: Same as reference accuracy
  • 50 % to dropout: Reference accuracy × 50 square root output (%)
• Ambient Temperature Effects: ±[0.15 % Span + 0.20 % URL] per 28 °C (50 °F) change
• Power Supply Effects: ±0.005 % per Volt (21.6 to 32 V DC, 350 Ω)
• Remote Monitoring: Compatible with BRAIN™ terminal, CENTUM CS™/XL™, HART® 275 host
• Communication Options:
  • FOUNDATION Fieldbus: GS 01C22T02-00EN
  • PROFIBUS PA: GS 01C22T03-00EN