Overview
The Love Controls Model 49 is a single-input, single-output proportioning control unit designed for temperature and process control in industrial automation applications. Love Controls, now a division of Dwyer Instruments, Inc., has been a leading innovator in manufacturing temperature controllers since 1970. The Model 49 represents a proven analog control solution with decades of field reliability in HVAC, manufacturing, and heating systems.
Key Features
- Proportioning (time-proportioning) control output for modulating valve or damper control
- PID tuning capability with adjustable proportional band, reset time, and derivative parameters
- Thermocouple input support for temperature measurement across wide ranges
- Manual setpoint adjustment and display
- Compact form factor suitable for panel mounting
- Proven legacy platform with extensive field history in industrial settings
Technical Specifications
- Product Type: Proportioning Temperature Controller
- Manufacturer: Love Controls Corporation / Dwyer Instruments
- Model Number: 49
- Control Output: Time-proportioning (cycle-time adjustable)
- Input Type: Thermocouple (Type-dependent configuration)
- Operating Voltage: 120/208/240 VAC (standard)
- Panel Mounting: 1/4 DIN format
- Functionality: Single setpoint, single output proportioning control
Typical Applications
- Commercial HVAC heating control and zone temperature management
- Industrial furnace and oven temperature regulation
- Heat-treat process monitoring and control
- Steam system proportioning valve control
- Electroplating and chemical bath temperature maintenance
- Legacy equipment retrofits and replacement of obsolete controllers
Compatibility & Replacements
Compatible With
- Standard thermocouple inputs (Type J, K, T, dependent on unit configuration)
- Proportioning valve actuators and damper controllers requiring low-voltage or modulating outputs
- Panel mounting systems designed for 1/4 DIN form factor devices
- Industrial control systems requiring manual or semi-automatic temperature regulation
- Relay or triac output circuits for proportioning control
Replaces / Drop-In Replacement For
The Love Controls Model 49 may serve as a direct replacement for other proportioning controllers of similar vintage with equivalent thermocouple input and time-proportioning output. Verify compatibility with your system integrator before ordering, as electrical connections and output ratings must match your specific application and valve/damper actuator specifications.
Works With
- Proportioning valve actuators (pneumatic or electric)
- Damper motors and modulating control devices
- Building management systems (BMS) with legacy sensor integration
- Facility control networks requiring analog temperature setpoint adjustment
- Manual tune-up via on-board potentiometers for proportional band and reset time
