General Model EJX110A Specifications Differential Pressure ...

1 GeneralSpecifications<<Contents>> <<Index>> Model EJX110 ADifferential Pressure TransmitterYokogawa Electric Corporation2-9-32 Nakacho, Musashino-shi, Tokyo, 180-8750 JapanPhone: 81-422-52-5690 Fax.: 81-422-52-2018GS 01C25B01-01 EGS 01C25B01-01E Copyright Dec. 2003 Sales Release Version 2003 The high performance Differential Pressure transmittermodel EJX110A features single crystal silicon reso-nant sensor and is suitable to measure liquid, gas, orsteam flow as well as liquid level, density and pres-sure. It outputs a 4 to 20 mA DC signal correspondingto the measured Differential Pressure .

2 Model EJX110 Aalso features remote setup and monitoring via commu-nications with the BRAIN terminal or HART communi-cator. By utilizing an unique feature of silicon reso-nant sensor, static Pressure can be monitored eitheron the integral indicator or via communication. STANDARD Specifications SPAN AND RANGE LIMITSM easurement to 10-100 to 100-7 to 7 to 40-40 to 40-400 to 4002 to 400-10 to to to 700-700 to 700inH2O(/D1)14 to 2800-2800 to 2800mbar(/D3)1 to 100-1000 to 1000-100 to 1005 to 100035 to 7000-7000 to 7000mmH2O(/D4)

3 10 to 1000-1000 to 100050 to 10000-10000 to to 7 PERFORMANCE SPECIFICATIONSZero-based calibrated span, linear output, wettedparts material code S and silicone oil, unless other-wise ConformanceEJX series ensures specification conformance to atleast 3 .Reference Accuracy of Calibrated Span(includes terminal-based linearity, hysteresis, andrepeatability)Measurement spanReferenceaccuracy of Span ( URL/span)% of PressureX PressureURL(the upper range limit)H10 kPa(40 inH2O)70 kPa(10 psi)100 kPa(400 inH2O)700 kPa(100 psi)Measurement spanReferenceaccuracy of span ( URL/span)% of PressureX PressureURL(the upper range limit)2 kPa(8 inH2O)10 kPa(40 inH2O)

4 Square Root Output AccuracyThe square root accuracy is a percent of flow or GreaterSame as reference accuracy50% to Dropout accuracy 50 Square root output (%)Ambient Temperature Effects per 28 C (50 F)ChangeCapsuleEffectM and H ( Span URL)L ( Span URL)Static Pressure Effects per MPa (1000 psi)ChangeSpan EffectsL, M, and H capsules of spanEffect on ZeroM and H capsules of URLL capsule of URLO verpressure EffectsOverpressure condition: up to maximum workingpressureM and H capsules of URLS tability (All normal operating condition, includingoverpressure effects)M and H capsules of URL per 10 yearsPower Supply Effects % per Volt (from to 32 V DC, 350 )2 All Rights Reserved.

5 Copyright 2003, Yokogawa Electric Corporation<<Contents>> <<Index>>GS 01C25B01-01E , 2003-00 Vibration EffectsLess than of URL when tested per the require-ments of IEC60770-1 field or pipeline with highvibration level (10-60 Hz, mm peak to peakdisplacement/60-2000 Hz 3 g)Mounting Position EffectsRotation in diaphragm plane has no effect. Tilting up to90 degree will cause zero shift up to kPa ( inH2O) which can be corrected by the Time ( Differential Pressure , all capsules)95 msWhen amplifier damping is set to zero and includingdead time of 45 ms (nominal)Static Pressure Signal Accuracy(For monitoring via communication or onindicator.)

6 Includes terminal-based linearity,hysteresis, and repeatability))Absolute Pressure1 MPa or higher : of spanLess than 1 MPa: (1 MPa/span) of spanGauge Pressure ReferenceGauge Pressure reference is 1013 hPa (1 atm)Note : Gauge Pressure variable is based on the abovefixed reference and thus subject to be affected bythe change of atomospheric Pressure . FUNCTIONAL SPECIFICATIONSO utputTwo wire 4 to 20 mA DC output with digital communi-cations, linear or square root programmable. BRAINor HART FSK protocol are superimposed on the 4 to20 mA range: mA to mAOutput limits conform to NAMUR NE43 can be pre-set by option C2 or AlarmOutput status at CPU failure and hardware error.

7 Up-scale: 110%, mA DC or more (standard)Down-scale: 5%, mA DC or lessNote: Applicable for Output signal code D and EDamping Time Constant (1st order)Amplifier damping time constant is adjustable from 0to seconds and added to response : For BRAIN protocol type, when amplifier dampingis set to s or less, communication mayoccasionally be unavailble during the operation,especially while output changes dynamically. Thedefault setting of damping ensures PeriodDifferential Pressure : 45 msStatic Pressure : 360 msZero Adjustment LimitsZero can be fully elevated or suppressed, within thelower and upper range limits of the Zero AdjustmentExternal Zero is continuously adjustable with resolution of span.

8 Re-range can bedone locally using the digital indicator with range-setting Indicator (LCD display)5-digit Numerical Display, 6-digit Unit Display and indicator is configurable to display one or up tofour of the following variables periodically.; Differential Pressure in %, Scaled Differentialpressure, Differential Pressure in Engineering unit,Static Pressure in Engineering Setting When Shipped for factory Pressure Limits69 MPa (10000 psi) NORMAL OPERATING CONDITION(Optional features or approval codes may affectlimits.)

9 Ambient Temperature Limits 40 to 85 C ( 40 to 185 F) 30 to 80 C ( 22 to 176 F) with LCD displayProcess Temperature Limits 40 to 120 C ( 40 to 248 F)Ambient Humidity Limits0 to 100% RH Total Accuracy (M and H capsules) of Span @1:1 Rangedown of Span @ 5:1 RangedownTotal accuracy is a comprehensive measure of transmitter total performance, covering all major factors in actualinstallation, that cause errors in measurement. As a standard measure, YOKOGAWA uses this to evaluate transmitter performance. E1: Reference Accuracy of Calibrated SpanE2: Ambient Temperature Effects per 28 C changeE3: Static Span Effects per MPa changeTotal Accuracy E12 E22 (E3 E4)2 E52 Total Probable Error E12 E22 E32 Total Probable Error (M and H capsules) of Span @1:1 to 5:1 RangedownTotal probable error, known as a measure of the total performance of the transmitters under the condition offixed line : Reference Accuracy of Calibrated SpanE2: Ambient Temperature Effects per 28 C changeE3.

10 Static Span Effects per MPa changeE4: Static Zero Effects per MPa changeE5: Overpressure Effects upto overpressure 25 MPa Not only a day-to-day changes in temperature can affectthe measurement and lead to unnoticed errors; fluctuaion of line Pressure , incorrect operation of three/five valve manifold leading to over- Pressure events, and other phenomena can have the similar result. Total Accuracy factors in such changes and errors and provides much comprehensive and practical determination of how atransmitter will perform under actual plant <<Contents>> <<Index>>All Rights Reserved.