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Configured for K Thermocouple I/P, 0 to 2300°F (-18 to 1260°C) (0 to 2300 °F), 3 A SPDT Relay O/P, this high-limit temperature controller suits protection of sensitive materials and commercial equipment protection. It has set point accuracy of ±3% FS maximum at 25°C and rated line voltage.
Configured for K Thermocouple I/P, 0 to 2300°F (-18 to 1260°C) (0 to 2300 °F), 3 A SPDT Relay O/P, this high-limit temperature controller suits protection of sensitive materials and commercial equipment protection. It has set point accuracy of ±3% FS maximum at 25°C and rated line voltage.
The CN3261 Series high-limit controller protects expensive heaters and sensitive materials from damaging due to temperature conditions. Units are designed for industrial and commercial applications that require high-temperature protection. The CN3261 features a Form "C" latching, manually resettable relay output that de-energizes whenever the sensed temperature exceeds the setpoint temperature.
Features
Applications
| Series | CN3261 Series |
| Type | high-limit temperature controller |
| Input | K Thermocouple I/P |
| Range | 0 to 2300°F (-18 to 1260°C) (0°F to 2300°F) |
| Output type | 3 A SPDT Relay O/P |
| Control Output | SPDT relay rated 3.8 A resistance and 1.5 A pilot duty 120 V AC, 100,000 cycles |
| Control Mode | Latching with manual reset or power-off |
| Reset Function | Integral reset switch standard; terminals available for optional remote reset switch |
| Set Point Adjustment | Local SP dial adjustment |
| Control Stability | Typically less than ±5μV/°F ambient and 0.1% of SPAN/% rated line voltage |
| Set Point Accuracy | ±3% FS maximum at 77°F (25°C) and rated line voltage |
| Sensor Break Protection | Contacts 4 and 5 open for thermocouple or RTD break |
| Ambient Operating Temperature | 32 to 140°F (0 to 60°C) |
| Common Mode Rejection | 60 db |
| Series Mode Rejection | 120 db |
| Power Input | 120 V AC or optional 24 V AC ±15%, 50/60 Hz, 3 VA maximum standard |
| Enclosure Material | Noryl, black color |
| Field Terminations | Screw terminals with wire clamping plates and touch-safe shield |
| Mounting | 1.38" (35 mm) DIN rail or surface mounting |
| Mounting Screw Holes | Upper left, lower right (2.5" (6.3 cm) c-c W and 3.0 c-c H) for #6 screws |
| Dimensions | 3.0 x 3.3 x 2.5" (76 x 84 x 64 mm) |
| Series | CN3261 Series |
| Type | high-limit temperature controller |
| Input | K Thermocouple I/P |
| Range | 0 to 2300°F (-18 to 1260°C) (0°F to 2300°F) |
| Output type | 3 A SPDT Relay O/P |
| Control Output | SPDT relay rated 3.8 A resistance and 1.5 A pilot duty 120 V AC, 100,000 cycles |
| Control Mode | Latching with manual reset or power-off |
| Reset Function | Integral reset switch standard; terminals available for optional remote reset switch |
| Set Point Adjustment | Local SP dial adjustment |
| Control Stability | Typically less than ±5μV/°F ambient and 0.1% of SPAN/% rated line voltage |
| Set Point Accuracy | ±3% FS maximum at 77°F (25°C) and rated line voltage |
| Sensor Break Protection | Contacts 4 and 5 open for thermocouple or RTD break |
| Ambient Operating Temperature | 32 to 140°F (0 to 60°C) |
| Common Mode Rejection | 60 db |
| Series Mode Rejection | 120 db |
| Power Input | 120 V AC or optional 24 V AC ±15%, 50/60 Hz, 3 VA maximum standard |
| Enclosure Material | Noryl, black color |
| Field Terminations | Screw terminals with wire clamping plates and touch-safe shield |
| Mounting | 1.38" (35 mm) DIN rail or surface mounting |
| Mounting Screw Holes | Upper left, lower right (2.5" (6.3 cm) c-c W and 3.0 c-c H) for #6 screws |
| Dimensions | 3.0 x 3.3 x 2.5" (76 x 84 x 64 mm) |
