The CN3261 Series High Limit Controller protects expensive heaters and sensitive materials from damaging over temperature conditions. It is 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. Two methods are provided to reset an alarm condition. (1) The Limit alarm has a reset pushbutton on the unit and (2) Reset terminals are provided for resetting the alarm from a remote pushbutton. The DIN Rail mounting feature allows quick installation without drilling or extra hardware. Slots are also provided for direct panel mounting.
Accuracy
± 3 %
Accuracy Detail
±3% FS maximum at 25°C and rated line voltage
Additional Features 1
Remote Reset, °F
Control Output
3 A SPDT Relay
Control Type
Latching with manual reset or power-off
Dimensions Note
76 H x 84 W x 64 mm D (3.0 x 3.3 x 2.5″) [overall 84 mm H (3.31″) for mounting]
DIN Rail Size
35 mm
Display Type
None
Electrical Connection
Screw Terminal
Enclosure Material
Noryl
Form factor
DIN Rail
Height
76 mm
Length
64 mm
Mounting
35 mm DIN Rail or Surface Mounting
Noise Rejection
Common Mode Noise Rejection: 60 db,Series Mode Noise Rejection: 120 db
Number of Inputs
1
Number of Outputs
1
Operating Temperature, Max
60 °C
Operating Temperature, Min
0 °C
Output Detail
SPDT relay rated 3.8 A resistance and 1.5 A pilot duty 120 Vac, 100,000 cycles
Power Consumption
3 VA
Sensor Break Protection
Contacts 4 and 5 open for thermocouple or RTD break
Set Point Adjustment
Adjustable Knobs
Stability
Typically less than ±5µV/°F ambient and 0.1% of SPAN/% rated line voltage
Supply Power Note
120 Vac or optional 24 Vac ±15%, 50/60 Hz, 3 VA maximum standard
Dwyer Omega – CN3261 Series High Limit Analog Temperature Controller with DIN Rail Mounting
The CN3261 Series High Limit Controller protects expensive heaters and sensitive materials from damaging over temperature conditions. It is 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. Two methods are provided to reset an alarm condition. (1) The Limit alarm has a reset pushbutton on the unit and (2) Reset terminals are provided for resetting the alarm from a remote pushbutton. The DIN Rail mounting feature allows quick installation without drilling or extra hardware. Slots are also provided for direct panel mounting.
Accuracy
± 3 %
Accuracy Detail
±3% FS maximum at 25°C and rated line voltage
Additional Features 1
Remote Reset, °F
Control Output
3 A SPDT Relay
Control Type
Latching with manual reset or power-off
Dimensions Note
76 H x 84 W x 64 mm D (3.0 x 3.3 x 2.5″) [overall 84 mm H (3.31″) for mounting]
DIN Rail Size
35 mm
Display Type
None
Electrical Connection
Screw Terminal
Enclosure Material
Noryl
Form factor
DIN Rail
Height
76 mm
Length
64 mm
Mounting
35 mm DIN Rail or Surface Mounting
Noise Rejection
Common Mode Noise Rejection: 60 db,Series Mode Noise Rejection: 120 db
Number of Inputs
1
Number of Outputs
1
Operating Temperature, Max
60 °C
Operating Temperature, Min
0 °C
Output Detail
SPDT relay rated 3.8 A resistance and 1.5 A pilot duty 120 Vac, 100,000 cycles
Power Consumption
3 VA
Sensor Break Protection
Contacts 4 and 5 open for thermocouple or RTD break
Set Point Adjustment
Adjustable Knobs
Stability
Typically less than ±5µV/°F ambient and 0.1% of SPAN/% rated line voltage
Supply Power Note
120 Vac or optional 24 Vac ±15%, 50/60 Hz, 3 VA maximum standard
Supply Power Type
AC
Supply Voltage
120 Vac
Width
84 mm
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