Warner Instruments CL-200 User manual

CL-200 Manual, Rev. 097014
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CL L- -2 20 00 0
Warner Instruments
1125 Dixwell Avenue, Hamden, CT 06514
[phone] / [phone]
[phone] - fax

CL-200 Manual, Rev. 097014
Table of Contents
INTRODUCTION.......................................................................................................................................4
NOMENCLATURE....................................................................................................................................5
Text conventions.....................................................................................................................................5
CONTROL DESCRIPTION......................................................................................................................6
Front panel..............................................................................................................................................6
Power Switch (Item A)..........................................................................................................................6
Meter Selector Switch and Meter (Item B)...........................................................................................6
Cooling Mode Switch (Item C).............................................................................................................7
Thermistor Recorder Outputs (Items E, V)...........................................................................................7
Monitor Temp In BNC (Item F)............................................................................................................7
Loop Speed Switch (Item G).................................................................................................................7
Set Temperature Control (Item H) .......................................................................................................7
External/Internal Select Control (Item J).............................................................................................7
Manual Voltage Control (Item K)........................................................................................................7
Peltier Limit LED (Item L)...................................................................................................................8
Freeze Alert LED (Item M) ..................................................................................................................8
Heat / Cool LED’s (Item N) .................................................................................................................8
Current Limit LED (Item O).................................................................................................................8
Thermistor Impedance Selector Switch (Item P)..................................................................................8
Heat Loss Compensation Dial (Item Q)...............................................................................................8
Feedback Thermistor Selector Switch (Item R)....................................................................................8
Thermistor Open LED (Item S)............................................................................................................8
Rear panel ...............................................................................................................................................9
External Volts Set (Item T)...................................................................................................................9
External Temp Set (Item U)..................................................................................................................9
Heater/Cooler input (Item W) ..............................................................................................................9
Power Entry Module (Item Y) ..............................................................................................................9
Ground Terminals (Item X)..................................................................................................................9
SETUP........................................................................................................................................................10
Warner Peltier Driven Systems...........................................................................................................10
Operating With Other Equipment......................................................................................................10
Warner Resistive Heating Systems.....................................................................................................10
Third-party Equipment.......................................................................................................................10
Thermistor Considerations.................................................................................................................10
OPERATION ............................................................................................................................................11
AUTOMATIC MODE .........................................................................................................................11

CL-200 Manual, Rev. 097014
Heat Loss Compensation .....................................................................................................................11
Feedback Thermistor Selection...........................................................................................................12
MANUAL MODE.................................................................................................................................13
APPENDIX................................................................................................................................................14
Specifications.........................................................................................................................................14
Accessories and replacement parts.....................................................................................................14
Warranty and service...........................................................................................................................15
Warranty.............................................................................................................................................15
Service notes.......................................................................................................................................15
Certifications.........................................................................................................................................16

CL-200 Manual, Rev. 090714
4
The CL-200 Dual-Channel Bipolar Temperature Controller from Warner Instruments is a versatile
and user-friendly thermal control device. This dual-channel automatic temperature controller is
capable of accurately maintaining two Peltier devices between -6°C and 65°C. The unit will also
maintain a resistive heater from ambient to 65°C.
While specifically designed for use with Warner’s Heating/Cooling Platforms and In-Line Solution
Heater/Coolers, this instrument can be easily adapted for use with custom-built equipment according
to the requirements of the user. When coupled with the SC-20 Dual In-line Solution Heater/Cooler,
the CL-200 provides efficient control of perfusion solution temperatures.
The unit is simple to use with a single control for temperature adjustment. Total automatic control is
provided in automatic mode, while manual control is available in manual mode. A loop-speed selector
is used to optimize the response of the system to accommodate thermal delay characteristics intrinsic
to the setup.
Features of the CL-200 include
9Quiet operation suitable for use in sensitive electrophysiology applications
9Automatic and manual modes
9Single control temperature adjustment
9Freeze alert
9Built-in protection for Peltier devices
9Selectable loop speed optimizes system speed and stability
9Simultaneous monitoring of system temperature and a separate point of interest
9Heat Loss compensation mode
9Open thermistor fault protection
9External inputs for computer control
9Compatible with all Warner Peltier-driven Heater/Cooler devices
THIS EQUIPMENT IS NOT DESIGNED NOR INTENDED
FOR USE ON HUMAN SUBJECTS
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
5
NOMENCLATURE
Text conventions
This manual refers to instrument controls at two functional levels; specific controls and settings
of these controls. To increase readability, we employ the following text conventions. Since our goal is
to provide clarity rather than complexity, we welcome any feedback you may wish to provide.
¾Warner Instrument product model numbers are presented using bold type.
¾References to controls are specified using SMALL CAPS.
¾References to control settings are specified using italic type.
¾Special comments and warnings are presented in highlighted text.
Any other formatting should be apparent from context.
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
6
CONTROL DESCRIPTION
Front panel
A labeled image of the face panel for one channel of the CL-200 is shown below. Operating
components are identified by letters. Refer to this diagram as an aid in identification of the described
components.
Power Switch (Item A)
ol Temp (T1), Monitor Temp (T2), Output Volts, and
Ou
Supplies power to the CL-200.
Meter Selector Switch and Meter (Item B)
THE SELECTOR SWITCH selects the parameter displayed on the associated METER. Included
options are HLC Temp, Set Temp, Contr
tput Amps and are described below.
Set Temp reports the adjustment from either the SET TEMPERATURE control (Item H) or the
EXT TEMP SET BNC (Item Q). Displayed units are °C.
Control Temp reports the actual temperature of the feedback thermistor situated within the
heater/cooler device being used. Displayed data is informative only and is in units of °C.
HLC Temp reports the heat loss compensated temperature of a “phantom” thermistor at the
site of interest. Displayed data is informative only and is in units of °C.
Monitor Temp reports the temperature of the sensor thermistor which connects via th
MONITOR TEMP IN BNC (Item F). This provides a convenient means to determine the
e
temperature of any point of interest within your configuration. Displayed units are °C.
Output Volts reports the adjustment from either the MANUAL VOLTAGE control (Item K) or the
EXT VOLT SET BNC (Item T). Displayed units are Volts.
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
7
Output Amps reports the current output command associated with either the MANUAL
VOLTAGE control (Item K) or the EXT VOLT SET BNC (Item T). Displayed units are Amperes.
The METER also provides an indication that the main POWER is on.
Cooling Mode Switch (Item C)
Selects between Automatic or Manual operational modes, or center select for off.
Thermistor Recorder Outputs (Items E, V)
BNC connectors are provided to send thermistor readings to a data acquisition system or
chart recorder.
MONITOR TEMP OUT (Item E) reports the temperature of the sensor thermistor which connects
via the MONITOR TEMP IN BNC (Item F). Output is calibrated to 100 mV/°C.
CONTROL TEMP OUT (Item V, back panel) reports the actual temperature of the feedback
thermistor situated within the heater/cooler device being used. Output is calibrated to 100
mV/°C.
Monitor Temp In BNC (Item F)
BNC for connecting a sensor thermistor used to sample the temperature at a point of
interest. This input is designed for use with the TA-29 cable assembly.
Loop Speed Switch (Item G)
This switch sets the feedback loop speed for the CONTROL TEMP THERMISTOR when the
CL-200 is used in automatic mode. Feedback options include fast, medium, and slow. Optimally
set to fast for most applications but can be set to medium or slow for systems with longer
thermal delay characteristics. For example, use the medium speed for use with the SC-20
Bipolar In-Line Solution Heater.
Set Temperature Control (Item H)
This dial adjusts the set point of the automatic temperature control system. The associated
GREEN LED is on when the INTERNAL/EXTERNAL SELECT CONTROL (Item J) is set to internal, and
the COOLING MODE SWITCH (Item C) is set to auto. Set value can be read from the METER (Item B)
in the set temp position.
External/Internal Select Control (Item J)
This switch selects between internal or external control inputs when the instrument is in
Manual mode (Item C).
When the INTERNAL/EXTERNAL SELECT CONTROL is set to internal, and the COOLING MODE
SWITCH (Item C) is set to auto, the SET TEMPERATURE CONTROL (Item H) will be active. Setting
the COOLING MODE SWITCH (Item C) to manual disables the SET TEMPERATURE CONTROL (Item H)
and activates the MANUAL VOLTAGE CONTROL (Item K).
Manual Voltage Control (Item K)
This dial is used to manually adjust the voltage output to the heater/cooler device. The
associated GREEN LED is on when the INTERNAL/EXTERNAL SELECT CONTROL (Item J) is set to
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
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internal, and the COOLING MODE SWITCH (Item C) is set to manual. Set value can be read from
the METER (Item B) in the output volts position.
Peltier Limit LED (Item L)
This option functions only when the CL-200 is used with an SC-20 Dual In-line Solution
Heater/Cooler. The RED LED is lit when the temperature of the Peltier device within the SC-20
exceeds its operational limits. Activation of this circuit automatically sets the output voltage of
the CL-200 to 0 V.
Freeze Alert LED (Item M)
This option functions only when the CL-200 is used with an SC-20 Dual In-line Solution
Heater/Cooler. The BLUE LED is lit when the Peltier device within the SC-20 approaches 0°C.
Activation of this circuit is informative only and will not alter any instrument setting.
Heat / Cool LED’s (Item N)
RED and BLUE LED’Sindicate heating or cooling power applied to the Peltier device.
Current Limit LED (Item O)
This indicator light informs the user that the channel has reached the maximum current
output of 5 Amperes. This indicator is informative only, and will not alter the function or
settings of the device.
Thermistor Impedance Selector Switch (Item P)
This switch can be set to indicate the type of thermistor in use with the peripheral device.
The thermistor impedance for Warner Instruments equipment is 10kΩ@ 25˚C, while the
thermistor impedance for Harvard equipment is 100kΩ@ 25˚C.
Heat Loss Compensation Dial (Item Q)
This dial can be used in auto mode as an adjustment for the temperature gradient between
T1 and T2. This circuit utilizes the change in power output to adjust for the heat lost from the
system and maintain a stable temperature at the preparation.
Feedback Thermistor Selector Switch (Item R)
This switch can be set to select the thermistor that will be used as the control point for the
feedback regulation of set temperature.
Thermistor Open LED (Item S)
This LED indicator will signify an open thermistor circuit (broken thermistor wire).
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
9
Rear panel
A schematic of the rear panel of the CL-200 is shown below. Important components are
identified by letter (T-Y). Refer to this diagram as an aid in identification of the described
components.
External Volts Set (Item T)
Input BNC for the application of a specified voltage to be applied to the heater/cooler being
controlled. Input functions only when the INTERNAL/EXTERNAL SELECT CONTROL (Item J) is set to
external, and the COOLING MODE SWITCH (Item C) is set to manual. Units are 1 V/V input. This
input can be used for computer control purposes.
External Temp Set (Item U)
Input BNC for adjusting the SET TEMPERATURE of the CL-200. Input functions only when
the INTERNAL/EXTERNAL SELECT CONTROL (Item J) is set to external, and the COOLING MODE
SWITCH (Item C) is set to auto. Units are 100 mV/°C. This input can be used for computer control
purposes.
Heater/Cooler input (Item W)
This is the connection port for Warner Heater/Cooler devices such as the SC-20 Dual In-
line Heater/Cooler and QE-1HC Heating/Cooling Platform.
Power Entry Module (Item Y)
Comprised of the line cord attachment point, line voltage selector and fuse buss. Power
entry is selectable between 115 VAC, 60 Hz or 230 VAC, 50 Hz. The replaceable fuse is 0.4 amp
slow-blow for 230 V applications, or 0.8 amp “slow-blow” for 115 V applications.
Ground Terminals (Item X)
Provides separate connections for chassis and circuit ground. Banana jacks are bridged
when shipped from the factory.
Warner Instruments
A Harvard Apparatus Company

CL-200 Manual, Rev. 090714
10
SETUP
The CL-200 has been designed primarily to drive Warner’s expanding line of Peltier-driven
heating and cooling devices. However, the instrument is also capable of supplying power to Warner’s
line of resistive heaters (Series 20 heater platforms, in-line solution heaters, etc.). The instrument
will auto-detect when a resistive-only heating device has been attached and will disable cooling
commands.
Warner Peltier Driven Systems
The set up for the CL-200 is straightforward when used with a Peltier driven heater/cooler.
First connect the cable from the heater/cooler into the 15-pin D-connector on the back of the CL-200.
Then connect the TA-29 thermistor (supplied with the heater/cooler) to the MONITOR TEMP IN BNC
(Item F).
If using the SC-20 in-line solution heater/cooler, set the CL-200 loop speed to medium. If using a
different device, then set the loop speed to the setting specified in that devices user’s manual, or
initially set the loop speed to fast and adjust as necessary to achieve stable performance.
If using external control inputs, make connections from your command output (e.g., analog out
on the A/D board or a power supply) to either the EXT TEMP SET (Item U) or EXT VOLT SET (Item T)
BNC’s on the rear panel.
Operating With Other Equipment
The CL-200 can be used to power other Warner equipment such as the SH-27B and SF-28 inline
solution heaters. In addition, the controller can be used as an independent device to power third-
party equipment so long as the following considerations are met.
Warner Resistive Heating Systems
Use of the CL-200 to power Warner resistive heaters is permitted if used in conjunction
with the AC-100 adapter cable. When the CL-200 is connected to a resistive device, all command
inputs (auto and manual modes for both internal and external commands) are functional with
the exception that cooling commands are not executed.
Third-party Equipment
The CL-200 heater controller will work with many other heating devices if used in
conjunction with the AC-100 adapter cable. To obtain maximum heating power, the resistance of
the third-party heating element should be between 8-12 Ω. However, any element that works at
a maximum of 15 V and 2.4 A will also work with the CL-200.
Thermistor Considerations
The CL-200 heater controller is designed to accommodate Unical thermistors from
Thermometrics (Edison, New Jersey). This family of thermistors can be interchanged without
recalibration of the instrument. The nominal resistance of a Unical thermistor is 10.0 kΩat
25°C. Other thermistors may be used with the CL-200 if the nominal resistance is also 10.0 kΩ
at 25°C.
Warner Instruments
A Harvard Apparatus Company