Circular chart recorder / controller

A fully programmable, circular chart recorder with integral capability for single- or dual-loop PID control



The C1900 is a fully programmable circular chart recorder/controller combining two PID control loops with 4-pen recording. Analog, heat/cool, time proportioning or on/off control can all be selected as standard. Motorized valve operation, with or without feedback, is available as an option. The instrument offers seamless loop functionality integration to solve process problems, eliminating the need for auxiliary devices.

Specific applications can be fully met by using the full range of options available, including one to four-pen recording, flow totalization, process alarms and ramp/soak profile to provide outstanding flexibility in just one instrument.


  • Easy installation with a choice of wall-, pipe- or panel-mounting

  • Ideal for harsh industrial environments thanks to NEMA 4X/IP66 protection

  • View the status of your process at a glance with six-digit displays of up to four process values simultaneously and active alarms

  • Tactile keypad provides direct access for operator adjustments and configuration programming without opening the recorder's door

  • Prevent unauthorized access to configuration adjustment menus with password-protected security system 

  • Precise process control with multiple recipe capability featuring up to 20 programmable ramp/soak profiles

  • Switch between auto/manual loop control and local/remote set point with one-touch operation

  • Recording versatility where control loops can operate independently or be soft-linked together to implement cascade control

  • Fully supported, user configurable math function


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