EJX110A Differential Pressure Transmitter

General Description:

The Yokogawa EJX110A is a high-performance differential pressure transmitter with a single-crystal silicon resonant sensor1. It is designed for measuring the pressure of liquids, gases, and steam1. The transmitter outputs a 4 to 20 mA DC signal corresponding to the measured differential pressure1. Additionally, its sensor can measure static pressure, which can be viewed on an integral indicator or monitored remotely via BRAIN or HART communications1.

 Yokogawa EJX110A Technical Specifications:

l Measurement Types:

l Primary Variable: Differential Pressure4

l Secondary Variable: Static Pressure4

l Reference Accuracy:

l Primary Variable: ±0.04% of Span (±0.025% of Span available)4

l Secondary Variable: ±0.2% of Span4

l Response Time:

l Primary Variable: 90 msec4

l Secondary Variable: 360 msec4

l Long-Term Stability (Primary Variable): ±0.1% of URL (Upper Range Limit) per 15 years4

l Over-pressure effect (Primary Variable): ±0.03% of URL4

l Rangeability (Primary Variable): 200:14

 Yokogawa EJX110A Features:

A. Safety as Standard: Certified to IEC61508:2010 Parts 1 through 7 and IEC61511:2004 Parts 1 through 3 by Exida® and TÜV Rheinland®4. It is certified for single transmitter use in SIL 2 safety applications and dual transmitter use in SIL 3 safety applications4.

B. Multi-Sensing Technology: Provides advanced diagnostic functions for detection1.

C. Quick Response: Offers a fast response time for accurate measurements1.

D. Remote Setup: Allows remote setup using communications1.

E. Diagnostics: Includes diagnostic capabilities1.

F. Optional Status Output: Features an optional status output for pressure high/low alarm1.

G. Four-Bolt Pressure Retaining Design: Ruggedly constructed pressure transmitters49.

H. Flange Gasket: Teflon-coated 316L stainless steel flange gasket49.

Yokogawa EJX110A Applications:

1) Measurement of liquid, gas, or steam flow.

2) Liquid level measurement1.

3) Density measurement1.

4) Pressure measurement1.

Installation Procedure:

1. Mounting: Mount the transmitter using its high-pressure side flange2.

2. Diaphragm Seals Installation: Install diaphragm seals on the high and low-pressure sides, ensuring correct labels are checked2. For tank liquid level measurement, set the minimum liquid level (zero point) at least 50 mm above the center of the high-pressure side diaphragm seal2.

3. Impulse Piping Installation: Take precautions when installing impulse piping and follow examples for connection 2.

4. Wiring: Make connections of external wiring to the terminal box and ensure proper grounding2.

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