Dual Channel Bipolar Temperature Controller (Warner)


  • Single control temperature adjustment
  • Built-in protection for Peltier devices
  • Heat loss compensation mode
  • Open thermistor fault protection

The CL-200 Dual Temperature Controller is an automatic two channel controller capable of accurately maintaining two Peltier devices between -6° and 65°C. Power for the instrument is provided by an low noise power supply making it suitable for use in sensitive electrophysiology applications. 
While the instrument has broad compatibility, it is specifically designed to control the SC-20 Dual In-line Solution Heater/Cooler in combination with any of our heated and cooled stage chambers.

The CL-200 is simple to use with a single control for temperature adjustment. While total automatic control is provided in the automatic mode, a manual control mode is also available. A loop-speed selector is available to optimize the feedback response of the system to the intrinsic thermal delay characteristics of the setup. 

In addition, the CL-200 has a new heat-loss compensation control that allows the instrument to control the temperature at a location downstream from the temperature source. 
A feedback thermistor switch allows the user to select which thermistor is used for feedback control. Choosing T1 (control thermistor) uses the built-in thermistor attached to the peripheral device. Selecting T2 (monitor thermsitor) allows control at the user selected location of the monitor thermistor (T2).

Built-in circuitry limits the maximum temperature of the Peltier to prevent thermal damage, and a freeze alert/alarm indicates when the cold side of the Peltier reaches 0 °C.



Maximum Output Voltage
±15V Heat/Cool,  0-15V Heat-Only

Maximum Output Current
5.0 A DC each channel

Maximum Output Power
75 Watts @ 3Ω load each channel

Manual Voltage Range
0 to ± 15 V

Temperature Range
-6 °C to 65 °C Heat/Cool ambient to 65 °C resistive

Recorder Outputs
each channel Control Temperature, 100 mV/°C
Monitor Temperature, 100 mV/°C

each channel Monitor Thermistor: 10 KΩ @ 25 °C, 100 KΩ @ 25 °C (switchable)
External Temp Set (auto mode)
External Voltage Set (manual mode) I/O Connector, each channel 15-pin "D" connector

each channel 3-digit LED display of:
Heat Loss Compensation Temp
Set Temperature
Control Temperature
Monitor Temperature
Output Voltage
Output Current Panel Meter Resolution 0.1 °C / 0.01 V / 0.01 A

Power Requirements
100-130 or 220-240 VAC
50Hz or 60 Hz
97-265 VAC / 200VA

Shipping Weight
4.54 kg

One year, parts & labor

Enclosure Dimensions
H x W x D     8.9 x 42.6 x 29.2 cm