The Parr Instrument Company Model 4848 Reactor Controller is designed and engineered to bring a new level of digital control to the entire line of Laboratory Pressure Reactor Systems. This new modular design brings 100% digital communications to all of the functions housed in the controller.

The 4848 Controller offers PID Control, Ramp and Soak Programming, Separate Heating and Cooling Control Loops, Motor Speed Control, Full or Half Power Heater Option, Lockout Relay and Reset for Over Temperature Protection, Expansion Modules for Tachometer, Pressure, and High Temperature Alarm, and Auto Tuning of PID Parameters.

A total of seven different modules are offered for the 4848 Controller. A maximum of three expansion modules in addition to the primary temperature control can be installed in the 4848 Controller. The user can select either the Tachometer Display Module or the Motor Control Module. This either/ or option also applies to the High Temperature Cut Off and External Temperature Limit Modules.

Software is provided with each 4848 Controller to allow bidirectional communications between the controller and a user-furnished PC. All operating set points and control parameters can be sent from the PC to all of the operating modules installed in the 4848 Controller. All data gathered by the modules of the 4848 is transferred to the PC for display and logging. Minimum PC requirements are a Pentium III running Windows 2000 or XP. (Complete PC requirements available at www.parrinst.com)

Another new controller, the Parr 4838 Reactor Controller, is available for controlling the temperature of the non-stirred line of pressure vessels. The 4838 cannot be upgraded to provide stirrer motor control, but utilizes the same Temperature Control Module as in the 4848 and provides identical control and communications ability.