Pressure Recorder

Pressure Recorder is used to record pressure data as a function of time. As the pressure rises it deflects the sensing element which is connected by mechanical linkage to the pen arm, which records the Pressure on suitably calibrated chart. Extensively used in automobile industry it is renowned for preciseness, high performance and long service life.

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Detailed Description for Pressure Recorder

Pressure Recorder is used to record pressure data as a function of time. As the pressure rises it deflects the sensing element which is connected by mechanical linkage to the pen arm, which records the Pressure on suitably calibrated chart. Extensively used in automobile industry it is renowned for preciseness, high performance and long service life.

 

Working Principle :

As the pressure raises it deflects the sensing element which is connected by mechanical linkage to the Pen arm, which records the Pressure on suitably calibrated chart. This chart will be rotated clockwise with the help of chart drive at a constant speed. This helps us to find out pressure variations at any point of the time period. Forbes Marshall Pressure Recorders can be manufactured with single or double pen arrangements and are driven either by a Mechanical / Electrical Chart Drive/ or Quartz Drive. The Mechanical Chart Drive is recommended for hazardous applications. These recorders can also be provided with electrical contacts. Every pressure recorder is calibrated to ensure the guaranteed accuracy of ± 1%.

 

 

Measurement input

Input signal

Current: 0-20mA, 0-10mA, 4-20mA, 0-10mA (extraction), 4-20mA (extraction)

Input impedance: ≤100Ω

Maximum limit of input current: ≤ 30mA

Voltage: 0-5V, 1-5V, 0-10V (customized), 0-5V (extraction), 1-5V (extraction), 0-20mV, 0-100mV

Input impedance: ≥ 500KΩ

Thermal resistance: Pt100, Cu50, Cu53, Cu100, BA1, BA2

Linear resistance: 0-400Ω

Thermocouple: B, S, K, E, T, J, R, N, F2, Wre3-25, Wre5-26

Output

Output signal

Analog output: 4-20mA (load resistance ≤ 480Ω), 0-20mA (load resistance ≤ 480Ω)

0-10mA (load resistance ≤ 960Ω), 1-5V (load resistance ≥ 250KΩ)

0-5V (load resistance ≥ 250KΩ), 0-10V (load resistance ≥ 4KΩ) (customized)

Alarm output: relay control output: AC220V/2A, DC24V/2A (resistive load)

Feed output: DC24V±1, load current ≤ 50mA

Communication output: RS485/RS232 communication interface, configurable baud rate in the range of 1200-9600bps, standard MODBUS RTU communication protocol adopted, communication distance up to 1km for RS-485 and 15m for RS-232.

Comprehensive parameters

Measurement precision

0.2%FS±1d

Setting mode

Light touch control panel for digital setting, the value of which will be stored permanently even in case of power failure; setting value locked and protected with password

Display mode

3.5” backlit dot matrix LCD screen (black characters on white screen) of high definition (128*64)

English characters, digits, process curves, and bar graphs may be displayed; pages turning-up/down, search of historical data, and change of time scale of curves can be achieved by operating proper keys on the panel.

Recording interval

9 options for your choice: 1s, 2s, 4s, 6s, 15s, 30s, 60s, 120s, and 240s

Storage time

3 days (interval of 1s) – 720 days (interval of 240s)

Printing control

Printing interface: RS-232C; SP-A40SH printer of serial interface may be connected.

Operating environment

Ambient temperature: 0-50℃; relative humidity: ≤ 85RH; isolated from strongly corrosive gas

Power supply

AC 100-240V (switch power), 50-60HZ; DC 20-29V (switch power)

Power consumption

≤ 5W

Structure

- Standard snap-in structure

 

 

 

 


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