• Partlow MRC 7700 Circular Chart Recorder

Partlow MRC 7700 Circular Chart Recorder

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MRC 7700
Shipping Weight:
20.00 LBS


The MRC7700 Relative Humidity Recorder is a microprocessor based circular chart profile recorder capable of measuring, displaying, recording and controlling relative humidity and/or temperature using Dry Bulb and Wet Bulb temperatures from a variety of inputs.

Record and control functions, alarm settings and other parameters are easily configured via the keys on the front cover and self-prompting displays. NEMA 3 protection and sealed door lock optional.


Record, control and security functionality designed specifically for Relative Humidity Applications
  • Process Validation, Trend Analysis
  • Relative Humidity
  • Micro-based recording controller with relative humidity profile capability
  • Two displays-allowing you to see critical process values at the same time
  • Easy, straightforward programming-allows you to configure your recorder with a logical step-by-step process using a simple keypad
  • True time based profiling capability puts you in control of your process
  • Reliability-maintenance free recording for years to come

Oven, chamber, furnaces, heat treating, food processing, harsh water environments

Product Specifications


Thermocouple types:J, K, T, R, S, E, B, N, C
RTD:100 ohm, platinum; 0.00385 ohms/ohm/°C
Volts:0-5 VDC; 1-5 VDC
DC Milliamps:4-20mA, 0-20mA
Control Outputs
Relay:SPST/SPDT; 115VAC 5.0A Resistive, 1/8HP, 250VA; 230VAC 2.5A Resistive, 1/8HP, 250VA
SSR Driver:Open collector output; short circuit protected @ 100mA max; provides 4VDC @ 20mA or 3VDC @ 40mA
Current:0-20mA or 4-20mA; 0-650 ohm maximum load
Alarm/Event Outputs (Options)
Relay:SPST/SPDT: 115VAC 5.0A resistive, 1/8HP, 250VA. 230VAC 2.5A resistive, 1/8HP, 250VA
SSR Driver:Open collector output; short circuit protected @ 100mA max; provides 4VDC @ 20mA or 3VDC @ 40mA
Process Alarm:Direct (High) or Reverse (Low)-9999 to 9999 units
Deviation Alarm:Direct (Deviation above setpoint) or Reverse (Deviation below setpoint) -3000 to 3000 units
Deviation Band Alarm:Open or closed 1 to 3000 units
Alarm Hysteresis:0-300 units (width of hysteresis band)

Literature & Docs