1. Product Overview:Yokogawa EJA120A intelligent micro differential pressure transmitter is from Chongqing Chuan InstrumentYokogawa EJA transmitter-A series is a common intelligent micro differential pressure transmitter. It uses the world's advanced single crystal silicon resonant sensor technology and has received positive feedback from customers since its market launch due to its excellent performance. It is used to measure the level, density, and pressure of liquids, gases, or steam, and then converts it into a 4~20mADC current signal output. The Yokogawa EJA120A series transmitters have two output methods: output signal -D indicates: BRAIN protocol digital communication, 4~20mA digital signal output; -E indicates: HART protocol digital communication, 4~20mA digital signal output. The Yokogawa EJA120A intelligent micro differential pressure transmitter can also communicate with BRAIN handheld devices, YHC4150, CENTUMCS, FieldMate, HART475 for settings, monitoring, etc.

2. Product Specifications:
Accuracy: ±0.2%
Measuring range: -1~1kPa (-4~4inH2O)
Measuring span: 0.1~1kPa (0.4~4inH2O)
Output signal: 4~20mA DC or FOUNDATION fieldbus or PROFIBUS PA two-wire digital communication
Protection level: IP67, NEMA 4X, and JIS C0920 immersion-proof
Explosion-proof specifications: FM, CENELEC ATEX, CSA, IECEx
Power supply: BRAIN and HART: 10.5~42V DC (intrinsically safe: 10.5~30V DC)
Fieldbus: 9~32V DC (intrinsically safe Entity mode 9~24V DC, intrinsically safe FISCO mode 9~17.5V DC)
Ambient temperature: -25~80℃ (-13~176℉)
Process temperature: -25~80℃ (-13~176℉)
Maximum working pressure: 50kPa (7.25psi)
Installation: 2-inch pipe installation
Wetted parts material: Diaphragm SUS316L (Diaphragm: Hastelloy C-276)
Flange material: SUS316
Housing: Aluminum alloy or SUS316 stainless steel (optional)

3. Yokogawa EJA120A micro differential pressure transmitterProduct Features: As a high-end micro differential pressure transmitter, the EJA120A has the following features:
1. Zero adjustment: The zero point can be adjusted arbitrarily within the upper and lower limits of the cartridge range.
2. External zero adjustment: The zero point is continuously adjustable within the measuring range, with a resolution of 0.01%. The range setting switch on the meter head can be used to calibrate the range.
3. Installation position effect: Changes in the installation position parallel to the diaphragm surface will not cause zero drift. If the installation position changes more than 90° from the diaphragm surface, zero drift within the range of 0.4KPa {1.6inH2O} can be corrected by zero adjustment.
4. Error alarm: When there is a CPU or hardware error, the output status is as follows: upper limit output: 110% ≥ 21.6mADC (standard), lower limit output: -5%, ≤ 3.2mADC -2.5%, ≤ 3.6mADC (applicable to code F1). Note: This applies only when the output signal is BRAIN or HART protocol.
5. Adjustable damping coefficient: The sum of the damping time constants of the amplifier component and the diaphragm. The damping time constant of the amplifier component is adjustable in the range of 0.2~64 seconds.
6. Ambient temperature: -25~80℃ (-13~176°F)

Friendly reminder:Due to the complex selection parameters of the Yokogawa EJA120A intelligent micro differential pressure transmitter, if you want specific product selection and model quotation, please feel free to consult online.