General Model EJX110A Specifications Differential …

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.

10 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: 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.