Overview
The Omega CN701 thermocouple limit controller is a compact, panel-mount device designed for high-limit temperature monitoring in industrial automation and process control systems. The CN700 Series controller provides audible alarm status along with a robust 15 amp relay output, making it ideal for applications requiring immediate thermal event notification and fail-safe shutdown capability.
Key Features
- 3-digit bright red LED display with 12.7 mm (½ in.) characters
- Audible alarm buzzer for thermal event notification
- 15 A SPDT relay output for load switching
- Accepts J, K, or S thermocouple inputs
- High or Low limit setpoint configuration
- Manual or automatic reset modes with built-in reset button
- External reset switch input capability
- Display update rate selectable down to 1 second
Technical Specifications
- Input: Thermocouple (J, K, or S type)
- Supply Voltage: 110 VAC
- Output: 15 A SPDT relay (ON/OFF control)
- Temperature Accuracy: ±1%
- Operating Temperature Range: 0°C to 65°C
- Output Voltage: 250 VAC maximum
- IP Protection Rating: IP64
- Display Type: 3-digit LED, red, 0.5 in. digits
- Control Type: ON/OFF
- Cutout Dimensions: 71 × 29 mm (2.8 × 1.14 in.)
- Certifications: UL, cUL, FM approved, CE marked, RoHS compliant
Typical Applications
- Oven and dryer temperature overshoot protection
- Industrial furnace high-limit safety control
- Equipment overheating prevention in automation systems
- Process alarm and notification in manufacturing environments
- Thermal runaway protection for heating elements
Compatibility & Replacements
Compatible With
- J-type thermocouple sensors
- K-type thermocouple sensors
- S-type thermocouple sensors
- Standard 110 VAC industrial power supplies
- PLC and discrete control logic systems accepting relay contacts
- Panel-mount cutout dimensions 71 × 29 mm
Replaces / Drop-In Replacement For
The CN701 is part of the Omega CN700 Series and can replace earlier generation limit controllers using the same panel cutout. Verify compatibility with your specific system before ordering.
Works With
- Industrial automation control systems with discrete relay inputs
- Heating and temperature management equipment
- Safety shutdown circuits
- Alarm notification systems and horn circuits
- Any application requiring J, K, or S thermocouple input and relay output logic
