Two Pen Recorders

CoBex Recorders, Inc.

The dual pen version of our popular single pen recorder allows monitoring of two independent processes with one recorder. The variety of input signal types, coupled with ease of use make these recorders ideal monitoring devices. Inherent reliability and precision assure accurate results. These recorders are well suited for the measurement of temperature, humidity, pressure, force, level, time of operation, carbon dioxide, PH and multiple voltage/current signals.


6 Inch, Two Pen Recorders, Fully Cased Recorders

6 Inch, Two Pen, Fully Cased


8 Inch, Two Pen Recorders, Fully Cased

8 Inch, Two Pen, Fully Cased



  • Environmental Chambers

  • Refrigerator / Freezer Combos
  • Industrial Ovens
  • Laboratories
  • Cryogenics

  • Machinery (time of Operation)
  • Water Treatment
  • Food and Dairy


  • Microprocessor Based

  • Rugged / durable construction
  • Battery back-up available
  • 1 or 2 SPDT relay contacts
  • 6", 8" and 10" diameter charts
  • 110V/220V, 50/60Hz standard
  • Flush mounting, surface mounting or portable cases
  • Highly accurate

  • Fast response time
  • Simple push-button calibration
  • Chart hold down tabs prevent curling of chart paper
  • Monitors temperature, voltage and/or current
  • Designed and manufactured in the USA


Input Types:

RTD, 0-1 volt, 0-5 volts, 1-5 volts, 0-10 volts, 4-20mA

†Achievable Temperature Accuracy:

+/- 0.25 º C (0.5 º F)

†Achievable Voltage / Current Accuracy:

+/- 0.25% of Span

Chart Rotation Speed:

7 day or 24 hour

Ambient Operating Conditions:

0 º to +40 º C, 0-95% RH, Non-condensing

Relay Contacts:

1 Amp @ 120 VAC

Pen Type:

Red and Blue Fiber Tipped

Battery Backup:

One 9 Volt Alkaline Battery

Battery Backup Life:

Minimum 24 hours

*Specifications are subject to change without notice.
†Depends on probe type and standard used for calibration.


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