横河电机EJX115A压力变送器115A的详细资料

横河电机EJX115A压力变送器

The high performance differential pressure transmitter EJX110A features single crystal silicon resonant sensor and is suitable to measure liquid, gas, or steam ? ow as well as liquid level, density and pressure. EJX110A outputs a 4 to 20 mA DC signal corresponding to the measured differential pressure. 
Its highly accurate and stable sensor can also measure the static pressure which can be shown on the integral indicator or remoy monitored via BRAIN or HART communications. Other key features include quick response, remote set-up using communications, diagnostics and optional status output for pressure high/low alarm. The multi-sensing technology provides the advanced diagnostic function to detect such abnormalities as an impulse line blockage or heat trace breakage. FOUNDATION Fieldbus and PROFIBUS PA protocol types are also available. All EJX series 
models in their standard con? guration, with the exception of the Fieldbus and PROFIBUS types, are certi? ed by TÜV as complying with SIL 2 for safety requirement.

? STANDARD SPECIFICATIONS
Refer to GS 01C25T02-01EN for Fieldbus 
communication type and GS 01C25T04-01EN for 
PROFIBUS PA communication type for the items 
marked with “◊.”
□ SPAN AND RANGE LIMITS
Measurement
Span/Range kPa inH2O
(/D1)
mbar 横河电机EJX115A压力变送器
(/D3)
mmH2O
(/D4)
F*
Span 0.1 to 5 0.4 to 20 1 to 50 10 to 500
Range -5 to 5 -20 to 20 -50 to 50 -500 to 
500
L*
Span 0.1 to 10 0.4 to 40 1 to 100 10 to 1000
Range -10 to 10 -40 to 40 -100 to 
100
-1000 to  
1000
M
Span 0.5 to 100 2 to 400 5 to 1000 50 to 
10000
Range -100 to 
100
-400 to 
400
-1000 to 
1000 
-10000 to 
10000
H
Span 2.5 to 500 10 to 2000 25 to 5000 0.025 to 5 
kgf/cm2
Range -500 to 
500
-2000 to 
2000
-5000 to 
5000
-5 to 5 
kgf/cm2
V
Span 0.07 to 14 
MPa
10 to 2000 
psi
0.7 to 140 
bar
0.7 to 140 
kgf/cm2
Range -0.5 to 14 
MPa
-71 to 
2000
-5 to 140 
bar
-5 to 140 
kgf/cm2
*: F capsule is applicable for wetted parts material 
code S.
 L capsule is applicable for wetted parts material 
code other than S.

PERFORMANCE SPECIFICATIONS
Zero-based calibrated span, linear output, wetted 
parts material code S and silicone oil, unless 
otherwise mentioned.
For Fieldbus and PROFIBUS PA communication 
types, use calibrated range instead of span in the 
following specifi cations.
Specifi cation Conformance
EJX series ensures specifi cation conformance to at 
least ±3σ.
Reference Accuracy of Calibrated Span
(includes terminal-based linearity, hysteresis, and 
repeatability)
Measurement span F
Reference
accuracy
X ≤ span ±0.04% of Span
X > span ±(0.015+0.01 URL/span)% of Span
X 2 kPa (8 inH2O)
URL
(upper range limit) 5 kPa (20 inH2O)
Measurement span M
Reference
accuracy
X ≤ span ±0.04% of Span
X > span ±(0.002+0.0019 URL/span)% of Span
X 5 kPa (20 inH2O)
URL
(upper range limit) 100 kPa (400 inH2O)
Measurement span H
Reference
accuracy
X ≤ span ±0.04% of Span
X > span ±(0.005+0.0049 URL/span)% of Span
X 70 kPa (280 inH2O)
URL
(upper range limit) 500 kPa (2000 inH2O)

Measurement span V
Reference
accuracy
X ≤ span ±0.04% of Span
X > span ±(0.005+0.00125 URL/span)% of Span
X 500 kPa (2000 inH2O)
URL
(upper range limit) 14 MPa (2000 psi)
Square Root Output Accuracy
The square root accuracy is a percent of flow span.
Output Accuracy
50% or Greater Same as reference accuracy
50% to Dropout point Reference accuracy × 50
Square root output (%)
Ambient Temperature Effects per 28°C (50°F) 
Change
Capsule Effect
F
M
H, V
±(0.055% Span + 0.18% URL)
±(0.04% Span + 0.009% URL)
±(0.04% Span + 0.0125% URL)
? Total Probable Error (M capsule)
±0.12% of Span @1:1 to 5:1 Rangedown
Total probable error, known as a measure of the total 
performance of the transmitters under the condition of 
fixed line presurre.
Total Probable Error = ± E1
2 + E2
2 + E3
2
E1: Reference Accuracy of Calibrated Span
E2: Ambient Temperature Effects per 28°C change
E3: Static Span Effects per 6.9 MPa change
? Total Accuracy (M capsule)
±0.12% of Span @1:1 Rangedown
±0.25% of Span @ 5:1 Rangedown
Total accuracy is a comprehensive measure of 
transmitter total performance, covering all major 
factors in actual installation, that cause errors in 
measurement.
As a standard measure, YOKOGAWA uses this to 
evaluate transmitter performance.
Total Accuracy = ± E1
2 + E2
2 + (E3 + E4)
2 + E5
2
E1: Reference Accuracy of Calibrated Span
E2: Ambient Temperature Effects per 28°C change
E3: Static Span Effects per 6.9 MPa change
E4: Static Zero Effects per 6.9 MPa change
E5: Overpressure Effects upto overpressure 25MPa
Not only a day-to-day changes in temperature can 
affect the 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 a transmitter will 
perform under actual plant operation.

Static Pressure Effects per 6.9 MPa (1000 psi) 
Change
 Span Effects
F, M, H and V capsules
±0.075% of span
 Effect on Zero
Capsule Effect
F
M
H, V
±0.1% URL
±0.02% URL
±0.028% URL
Overpressure Effects
Overpressure condition: up to maximum working 
pressure
M, H and V capsules
±0.03% of URL
Stability (All normal operating condition, including 
overpressure effects)
M, H and V capsules
±0.1% of URL per 10 years
F capsule
±0.1% of URL per one year
Power Supply Effects(Output signal code D, E 
and J)
±0.005 % per Volt (from 21.6 to 32 V DC, 350Ω)
Vibration Effects
Amplifier housing code 1 and 3:
Less than 0.1% of URL when tested per the 
requirements of IEC60770-1 field or pipeline 
with high vibration level (10-60 Hz, 0.21 mm 
displacement/60-2000 Hz 3 g)
Amplifier housing code 2:
Less than ±0.1% of URL when tested per the 
requirements of IEC60770-1 field with general 
application or pipeline with low vibration level (10-60 
Hz 0.15mm displacement /60-500 Hz 2g)
Mounting Position Effects
Rotation in diaphragm plane has no effect. Tilting 
up to 90 degree will cause zero shift up to 0.4 kPa 
(1.6 inH2O) which can be corrected by the zero 
adjustment.
Response Time (Differential pressure) “◊”
90 ms for Wetted Parts material code S except for 
Measuring span code F. 150 ms for Wetted Parts 
Material Code H, M, T, A, B, D and W or Measuring 
span code F.
When amplifier damping is set to zero and including 
dead time of 45 ms (nominal)
Static Pressure Signal Range and Accuracy 
(For monitoring via communication or on 
indicator. Includes terminal-based linearity, 
hysteresis, and repeatability)
 Range
Upper Range Value and Lower Range Value of the 
statice pressure can be set in the range between 0 
and Maximum Working Pressure(MWP). The upper 
range value must be greater than the lower range 
value. Minimum setting span is 0.5 MPa(73 psi).
Measuring either the pressure of high pressure side 
or low pressure side is user-selectable.

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