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EJA510A And EJA530A Absolute And Gauge PressureTransmitters Supplier Manufacturer
Oct 27, 2016

EJA510A and EJA530A Absolute and Gauge PressureTransmitters

Unit price : 500-780USD       Min Order : 1 piece 

Payment Terms:L/C, T/T, Western Union .

Delivery time : 2-3weeks 

Transmitter Specifications:


Two wire 4 to 20 mA DC output with digital communications. BRAIN or HART FSK

 protocol are superimposed on the 4 to 20 mA signal.


0.1% of URL per 12 months

Isolating Diaphragms :

316L SST or Alloy C-276

Stability :

±0.10% of URL for 12 months

Housing :

Low copper cast-aluminum alloy with polyurethane

paint (Munsell 0.6GY3.1/2.0)

Degrees of Protection :


PSupply Voltage :

10.5 to 42 V DC for general use and flameproof type

10.5 to 32 V DC for lightning protector (Optional

code /A) 10.5 to 30 V DC for intrinsically safe, Type n,

nonincendive, or non-sparking type Minimum voltage limited at 16.4 V DC for digital

communications, BRAIN and HART

Basic Information :

The absolute and gauge pressure transmitter modelEJA510A and EJA530A can be used to

 measure liquid, gas, or steam pressure. Both output a 4 to 20 mA DC signal corresponding

 to the measured pressure, and also feature remote setup and monitoringthrough communications

 with the BRAIN™ terminaland CENTUM CS™ or µXL™ or HART® 275 host.

More series EJX Pressure transmitter:

EJX110A  EJX115A   EJX118A    EJX120A   EJX130A   EJX210A   EJX310A   EJX430A   EJX438A   EJX440A

EJX510A/EJX530A  EJX610A/EJX630A  EJX910A  EJX930A

Ordering Examples:

















Main features: 


1.In addition to guarantee the high precision, also implements the static pressure. The temperature such as high performance of minimal environmental impact. 


2.Can prolong the high reliability of continuous use. 


3.Small, lightweight. Make it not limited by the installation place, free installation. 


4.USES the microcomputer technology, complete with self-diagnosis and communication function. 


5.Development focus on the stability of the zero point, improve the maintenance efficiency. Don't need adjustments zero for five consecutive years. 


Working principle: 


By monocrystalline silicon resonant sensor on the two H form on the vibration of the beam, respectively, the differential pressure, pressure signal into frequency signal and sent to the pulse counter, then the difference between the two frequency transfer directly to the CPU for data processing, the D/A converter is converted into A corresponding to the input signal is 4 ~ 20 madc output signal, and A BRAIN/HART, superimposed on the analog signal digital signal to communicate. Bellows components of built-in features fixed memory storage of environment temperature, static pressure sensor and the input/output characteristics correction data, the CPU operation, can make the transmitter gain good temperature characteristic and static characteristic and the input/output characteristics. Through the I/O port and the external devices (such as portable intelligent terminal BT200 or 275 and DCS with communication function of I/O card) in digital communication transmission, the high frequency of 2.4 kHz (Brian protocol) or 1.2 kHz (HART protocol) digital signal superimposed on 4 ~ 20 ma signal lines, in communication, frequency signals for 4 ~ 20 ma don't have any impact. 


1, the structure principle of monocrystalline silicon resonant sensor is the core part of, or on a single crystal silicon chip adopt micro-electronic mechanical processing technology (MEMS), respectively, in the center of the surface and edge into two exactly the shape, size of H shape resonance beam vibration (H shaped resonator with two beam), and in the micro vacuum cavity, make it is not in contact with the liquid filling, and make sure it is not affected by air damping of vibration. 


2, and the principle of resonant elements Silicon resonant beam in a magnetic field, provided by the permanent magnet and transformer, amplifier and so on a positive feedback loop, let the resonance beam generate oscillation in the loop. 


3, the stress distribution When the upper and lower surface of monocrystalline silicon slice deformation will occur when pressure and formation pressure, to the compression force, the center edge under tension, and two vibration shape beam feel different strain effect, as a result, the center of the resonance beam by the compressive force and frequency is reduced, side resonant beam due to the difference between the tension and frequency corresponding to different pressure signal. 


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