• Partlow MRC 7800 Circular Chart Recorder

Partlow MRC 7800 Circular Chart Recorder

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MRC 7800
Shipping Weight:
20.00 LBS


The MRC 7800 Flow Controller is a microprocessor based circular chart recorder capable of measuring, displaying, recording and totaling flow process variables. Record functions, alarm settings and other parameters are easily configured from the front mounted keypad and self-prompting displays.

All user data can be protected from unauthorized changes by the Enable Mode security system. The MRC7800 is protected against loss of data from AC power failures by a standard battery backup system.

Applications for the MRC 7800 include process validation, trend analysis, regulatory compliance and product safety. Flow tracking is available with the optional totalizing capability.

Standard features:
  • 8 Digit display per pen
  • Isolated linear sensor input: mA, mV, V
  • Square-root extraction
  • Variable exponent for weirs and flumes
  • Custom curves for flow correction, linearization, of height to volume conversion
  • Pressure compensated DP flow calculation
  • Adjustable flow time base - per sec, per min, per hour, and per day
  • Chart speed from 0.1 to 999.9 hours
  • Disposable fiber tipped pens: red, green
Key Specifications:
  • Measurement accuracy: +/- 0.25%
  • Recording accuracy: +/- 0.5%
  • 3 Scans per second
  • 5A SPST or SPDT Relay outputs
  • 13.19" H x 15.13" W x 3.63" D
  • 115 or 230 (optional) VAC powered
  • 3 Year warranty

Product Specifications


Volts:0 to 5VDC, 1 to 5VDC
Millivolts:0 to 100mV, rangeable
Milliamps:4 to 20mADC, 0 to 20mADC
Transmitter Fault Detection:Displays SnSr for sensor or transmitter break. Outputs go off. Fault detection is not functional for zero based voltage and milliamp inputs.
Alarm Output
115VAC: 5.0A Resistive, 1/8HP, 250VA
230VAC: 2.5A Resistive, 1/8HP, 250VA
SSR Driver: Open collector output.
Short circuit protected @ 100mA maximum
Provides 4VDC @ 20mA or 3VDC @ 40mA
Process Value Output:0 0 to 20 or 4 to 20mADC into 650 ohms max

Literature & Docs