The Parr 4848 Reactor Controller is a modular laboratory reactor control unit designed for monitoring and controlling key operating parameters of compatible Parr stirred reactors and pressure vessels. The controller shown in the photograph is clearly identified as Parr 4848 Reactor Controller and features dedicated front-panel controls for primary temperature, RPM, pressure and temperature. Parr describes the Model 4848 as a general-purpose reactor controller capable of controlling temperature and stirring speed while optionally monitoring pressure and redundant temperature. Parr Instrument Company

The photographed controller includes digital temperature-control displays, an RPM section, pressure and temperature control interfaces, heater and motor controls, local/remote selection, speed adjustment and a high-limit protection section. The 4848 uses modular architecture and can accommodate up to three additional expansion modules in addition to the primary temperature-control module. Available modules include tachometer/motor control, pressure display, high-temperature cutoff, external temperature limit, motor torque and cooling solenoid control modules. Parr Instrument Company

The controller uses PID-based temperature control with auto-tuning capability and supports ramp-and-soak programming. It is intended for use with compatible Parr laboratory reactor systems where controlled heating, stirring and process monitoring are required. Parr Instrument Company

Applications

The Parr 4848 Reactor Controller is suitable for laboratory and research applications involving stirred reactors, pressure reactors and controlled chemical reaction systems. It can be used to manage reactor temperature and stirring speed while monitoring process parameters such as pressure and secondary temperature when the corresponding modules and sensors are installed.

Typical applications include chemical synthesis, reaction optimization, catalyst research, materials development, polymer research, pharmaceutical process development and other laboratory-scale reaction studies requiring controlled temperature and agitation.

Main Features

• Parr Instrument Company 4848 Reactor Controller
• Modular laboratory reactor control architecture
• Primary temperature control with PID control
• Temperature auto-tuning capability
• Ramp-and-soak programming
• Dedicated RPM/stirring-speed control
• Pressure monitoring capability with compatible pressure module
• Secondary temperature monitoring capability with compatible module
• Heater control with high-temperature protection
• Local/remote operating controls
• Digital process-value and set-point displays
• High-limit reset and over-temperature protection
• RS-485 digital communications capability
• Compatible with selected Parr reactor and pressure-vessel systems
• Expansion-module architecture for additional process monitoring and control Parr Instrument Company

Technical Specifications

The published 4848 documentation specifies Type-J thermocouple input, a 0–800 °C operating range, 1 °C readout/setpoint resolution and approximately ±2 °C system accuracy. Electrical versions include 115 VAC and 230 VAC, 50/60 Hz, with a 15 A rating. Manualshelf

Benefits of Refurbished Laboratory Equipment

A refurbished Parr 4848 Reactor Controller can provide a cost-effective option for laboratories requiring reactor temperature, stirring-speed and process-monitoring capabilities without purchasing a new controller. Its modular design can also make it useful for laboratories working with compatible existing Parr reactor systems.

Refurbished equipment can be particularly useful for research laboratories, educational institutions, pilot-scale development facilities and industrial R&D environments where replacement controllers, spare systems or additional reactor-control capacity are required.

Additional Information

The photographed unit shows significant external cosmetic wear, dirt and surface discoloration consistent with previously used laboratory equipment. The exact installed module configuration, electrical voltage, rear connections, internal condition, sensors and accessories are not fully visible in the photograph.

Compatibility with a specific Parr reactor, motor, pressure transducer, thermocouple and other accessories should be verified before purchase. Electrical testing, temperature-control verification, pressure-input verification and motor-control testing are recommended before putting the controller into operational service.

• Parr Instrument Company – 4848 Reactor Controller
• Parr 4848 Technical Specifications
• Parr 4848 Ordering Guide
• Parr 4848 Controller Documents

Refurbished Condition

This is a refurbished Parr 4848 Reactor Controller. The instrument has been professionally inspected and tested. Reagents, accessories, software and consumables may vary depending on availability.