Description
Emerson KJ3242X1‑FA1
Technical Specifications: Pressure measurement range: 0 to 30 MPa Output signal: 4-20 mA two-wire signal Power supply: 12 VDC to 30 VDC Measurement medium: liquid, gas, steam Operating medium temperature: -40 ℃ to 120 ℃ Ambient operating temperature: -40 ℃ to 85 ℃ Protection grade: IP67
Functional Features: High precision piezoresistive pressure sensing element. Built-in full range temperature compensation. Two-wire 4-20 mA standard output. Anti-overpressure structure protects sensing element. Local zero and span adjustment. EMC anti-interference design for industrial environment. Stainless steel pressure sensing diaphragm.
Application Scenarios: Oil pipeline pressure measurement, chemical reactor pressure monitoring, power plant boiler auxiliary pipeline pressure detection, hydraulic system pressure monitoring, high-pressure water treatment pipeline pressure measurement, natural gas process pressure monitoring.
Performance Parameters: Measurement accuracy: ±0.075% full scale Long term stability: ±0.1% full scale per year Vibration resistance: 10 Hz to 150 Hz, 0.5 g Shock resistance: 50 g peak acceleration MTBF value: 245000 hours
Material Composition: Process wetted parts: 316L stainless steel diaphragm and pressure connection. Transmitter housing: die-cast aluminum alloy with anti-corrosion coating. Internal circuit board: FR-4 glass fiber epoxy substrate. Cable entry seal: fluorine rubber sealing ring. Electronic components are industrial grade semiconductor chips.
Structural Features: Split structure of pressure sensing body and electronic housing. Threaded pressure process connection for pipeline installation. Cable gland on electronic housing for signal cable entry. Zero and span adjustment button on electronic housing. Internal cavity filled with inert oil for pressure transmission.
Working Principle: Process pressure acts on stainless steel sensing diaphragm. The diaphragm deforms and transmits pressure to piezoresistive sensing chip. The sensing chip converts pressure value into weak electrical signal. Internal circuit amplifies, compensates and converts signal into standard 4-20 mA current signal. The current signal transmits to control system through two-wire cable.
Installation Requirements: Install transmitter on pipeline or pressure tapping point through threaded process connection. Keep pressure tapping pipeline free of gas accumulation or liquid precipitation. Use shielded twisted pair cable for signal wiring. Install cable gland tightly to maintain IP67 protection grade. Avoid strong vibration position for installation.
Precautions for Use: Do not exceed maximum overpressure limit of the transmitter. Select suitable wetted material according to process medium corrosion property. Tighten thread connection with specified torque. Do not open electronic housing in explosive hazardous area. Calibrate zero point regularly according to maintenance cycle.
