product description

      The pressure transmission controller is a multi-functional product integrating pressure measurement, display, control and microcomputer communication. This product has a fully electronic structure. The front end uses a pressure sensor with an isolation film and an oil-filled core. The output signal is sent to the microprocessor by a high-precision, low-temperature drift and high-reliability amplification circuit and an analog-to-digital conversion circuit. After calculation It is converted into a standard signal output by a high-precision digital-to-analog conversion circuit. With five independent relay contact outputs, it can directly replace the electric contact pressure gauge. It is flexible to use, simple to operate, and easy to adjust. It is widely used in various industries such as electric power, tap water, water treatment, petroleum, chemical industry, metallurgy, etc. It is an intelligent instrument that measures, displays, controls and remotely transmits the pressure of fluid media. Digital pressure measuring instrument.

Technical Parameters

  Analog output (4～20)mA DC (load resistance≤750Ω)

                    0～10 mA DC (load resistance ≤1.5KΩ)

                    (1～5)V DC (Load resistance ≥250K)

                    0～5V DC (load resistance ≥250K)

Switching output Relay control output—ON/OFF (with hysteresis)

Contact capacity AC220V/2A; DC 24V/2A (resistive load)

Communication output Standard serial two-way communication interface

Communication protocol: RS-232C, RS-485

Baud rate: (300～9600)bps (freely set)

Measuring range relative pressure: high 0～60MPa low 0～20kPa

Absolute pressure: high 0～60MPa, low 0～20kPa

Negative relative pressure (-0.1～1)MPa

Measurement accuracy ±0.2%FS or ±0.5%FS

Resolution ±1 word

Display range -1999～9999

Display mode: four-digit high-brightness LED digital display, light-emitting diode working status display, dual-screen digital display

Control/Alarm: Upper limit, lower limit or upper limit, lower limit control/alarm output can be selected

Method: Relay ON/OFF with hysteresis (can be set freely)

Parameter setting: Digital setting with touch buttons on the panel. Parameter setting values are permanently saved after power failure. Parameter setting values are password locked.

Protection mode: LED indication of relay output status, input over/under range alarm, automatic reset when power supply is under voltage or abnormal working

Ambient temperature -10℃～60℃

Relative humidity ≤85% RH (avoid strong corrosive gas)

Power supply voltage ·(90～265) V AC (switching power supply) ·DC24V±2V (switching power supply)

Power consumption ·≤4W (90～265) V AC (switching power supply) ·≤4W (DC24V (switching power supply)

Materials of Construction Pressure Port: Stainless Steel

Pressure-sensitive diaphragm: 316L stainless steel

Electronic shell: aluminum alloy or iron shell

Sealing rubber ring: fluorine rubber, nitrile rubber or fully sealed welding