Description / توضیحات
Description
The EJA-E series of transmitters is Yokogawa's most recent evolution of the DPharp family. Released in 2012, it combines the ruggedness and success of the work-horse EJA-E series with the performance of the thoroughbred EJX-A series to deliver the type of product you have come to expect from Yokogawa.
The EJA118E is a Differential Pressure Transmitter with remote diaphragm seals.
EJA118E features include:
±0.2% Accuracy
200 ms Response Time
Exida and TUV SIL2 / SIL3 Certified
Local Parameter Setting (LPS)
10-segment Signal Characterizer
Active Capillary Fill Fluid Density Compensation
Model and Suffix Codes
Model EJA118E Diaphragm sealed differential pressure transmitter
Output signal -D 4 to 20 mA DC with digital communication (BRAIN protocol)
Measurement span (capsule) M 2.5 to 100 kPa (10 to 400 inH2O)
S Always S
C Always C
Cover flange bolts and nuts material G 316L SST
Installation -9 Horizontal piping type and left side high pressure
Amplifier housing 3 Cast aluminum alloy with corrosion resistance properties(1)
Electrical connection D M20 female, two electrical connections and a 316 SST blind plug
Integral indicator D Digital indicator(2)
Mounting bracket B 304 SST 2-inch pipe mounting, flat type (for horizontal piping)
Process connection style -W Flush type
Flange rating A1 ANSI class 150
Process connection size (Process flange size) 3 3-inch (80 mm)
Flange material C 316 SST(3)
Gasket contact surface(4) 1 Serration (for ANSI flange with wetted parts material SW only)
Extension 0 None
Fill fluid(7) -A For general use (silicone oil)(8)
Capillary connection A Side of diaphragm seal unit
2 Always 2
Capillary length(9) 5 5 m
Gold-plated diaphragm(10) /A1 Inside of isolating diaphragms (fill fluid side) are gold plated, effective for hydrogen permeation.
Calibration units(11)(12) /D3 M calibration (kgf/cm² unit)
Pressure test/ Leak test certificate(13)(14) /T52 [Flange rating] ANSI/JPI Class 150
[Test pressure] 3 MPa (430 psi)
Nitrogen Gas(15)
The “*” marks indicate the most typical selection for each specification
Not applicable for electrical connection code 0, 5, 7, 9 and A.
Not applicable for output signal code G.
Forged version of the material may be used.
See table 3 ‘Gasket contact surface’ on page 6.
Users must consider the characteristics of selected wetted parts material and the influence of process fluids. The use of inappropriate materials can result in the leakage of corrosive process fluids and cause injury to personnel and/or damage to plant facilities. It is also possible that the diaphragm itself can be damaged and that material from the broken diaphragm and the fill fluid can contaminate the user’s process fluids.
Be very careful with highly corrosive process fluids such as hydrochloric acid, sulfuric acid, hydrogen sulfide, sodium hypochlorite, and hightemperature steam (150°C [302°F] or above). Contact Yokogawa for detailed information of the wetted parts material.
When specified flushing connection ring code 1 or 2, exclusive gaskets are provided for transmitter side.
Even in case where fill fluid code D (fluorinated oil) is selected, if degrease cleansing treatment or both degrease cleansing and dehydrating treatment for the wetted parts is required, specify option code K1 or K5.
In case of wetted parts material code TW (Tantalum), the process temperature limit is –10 to 200°C.
Hastelloy C-276 or N10276.
Applicable for wetted parts material code SW, SE, SY, and HW.
The unit of MWP (Max. working pressure) on the name plate of a housing is the same unit as specified by option code D1, D3, and D4.
Not applicable for Fill fluid code 1, 2, or 4.
The unit on the certificate is always MPa regardless of selection of option code D1, D3, or D4.
A flushing connection ring will not be applied when conducting the pressure test or leak test.
Dry nitrogen gas is used for oil-prohibited use (option code K1 and K5.)
