Single Channel Heater Controller User`s Manual
Contents
1. is to pre heat the solution with an in line heater in conjunction with platform heating Operating With Other Eguipment The TC 324B can be used to power other Warner eguipment such as the SH 27B and SF 28 Slow Flow solution heaters In addition the controller can be used as an independent device to power third party eguipment as long as the following considerations are met Load Resistance The TC 324B heater controller will work well with many other heating devices To obtain maximum heating power the resistance of the heating element should be between 8 12 Q but any element that works at a maximum of 12 V and 1 5 A will also work with the TC 324B Thermistor Considerations The TC 324B heater controller was 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 Unical thermistors is 10 0 KQ at 25 C Other thermistors may be used with the TC 324B if the nominal resistance also is 10 0 kQ at 25 C The use of thermistors with other characteristics may not be possible or will reguire recalibration of the TC 324B Publication 5700 001 REV C s Single Channel Heater Controller Warner Instruments Operation The main use of a heater control device such as the TC 324B is to maintain a constant bath temperature with minimum deviation from a set tempera ture This is usually achieved b2. It is normal for some overshoot to occur while the temperature is stabilizing and these features prevent the temperature from reaching very high or very low levels during this time Manual Mode In manual mode the MANUAL VOLTAGE control Item D is used to set the out put voltage to a fixed value The voltage setting can be viewed with the METER when the METER SELECTOR switch Item E is set to Output Voltage In manual mode the SET TEMPERATURE control Item C is disconnected as is the feedback system of the TC 324B The instrument now operates as a 0 12 VDC power supply that can provide up to 1 5 A of current to a device Use this mode with heater systems that will operate properly with a fixed voltage and lack feedback thermistors Publication 5700 001 REV C 5 Single Channel Heater Controller Warner Instruments Operation Connection To External Devices In Line Heaters The SH 27A and SF 28 in line solution heaters connect directly into the TC 324B Output connector Item H For these devices the tem perature of the solution is monitored by a thermistor placed at the outflow end of the in line heater This is the T1 CONTROL thermistor The T1 RECORDER OUTPUT BNC Item J on the TC 324B front panel can be used to measure the temperature of this thermistor at a scale factor of 100 mV C A second thermistor plugged into the T2 INPUT on the instrument rear panel can be used to measure the temperature at any other point of i
3. Nomenclature Text conventions This manual refers to amplifier controls at two functional levels specific controls and settings of these controls To minimize the potential for con fusion we have employed several text conventions which are specified below Since our goal is to provide clarity rather than complexity we welcome any feedback you may wish to provide Warner Instrument product numbers are presented using bold type References to controls are specified using SMALL CAPS e References to control settings are specified using italic type e Special comments and warnings are presented in Idata tao Any other formatting should be apparent from context Publication 5700 001 REV C s Single Channel Heater Controller Warner Instruments Control Description Front panel A schematic of the face panel of the TC 324B is shown below Important components are identified by letter B H J Please refer to this diagram as an aid in identification of described components WARNER TC 324B Manual Voltage mi INSTRUMENT 0 To 12 Volts CORPORATION up HEAT O Down SET O ewe SnATURE RECORDER OUTPUTS o T1 Control T2 Monitor T 1 Control T 2 Monitor OUTPUT OUTPUT OUTPUT set Temp Output GM AUTO Biol 100mV of AUTOMATIC TEMPERATURE O_O Power Switch Located directly under the Warner logo Supplies power to the TC 324B Output Switch Item B Supplies or removes power to the
4. OUTPUT CONNECTOR Item H Selects between Automatic Mode Manual Mode or center off The associated green LED is lit when output power is on auto or manual mode selected Set Temperature Control Item C Used to adjust the set point of the automatic control system The associated green LED is on when the controller is set to Automatic Mode on the OUTPUT SWITCH item B Manual Voltage Control item D Used to manually set the voltage output to the heater device The associated green LED is on when the controller is set to Manual Mode on the OUTPUT SWITCH item B Meter Selector Switch and Meter Item E SELECTOR SWITCH selects the parameter that the METER Item F will display Options include Set Temperature TI Contro T2 Monitor and Output Voltage Publication 5700 001 REV C 2 Single Channel Heater Controller Warner Instruments Control Description Conto Meter Item F Displays the parameter selected by the METER SELECTOR SWITCH Item E The METER also provides an indication that the MAIN POWER is 07 Loop Speed Switch Item G Sets the feedback loop speed for the heater sensor system when the device is used in automatic mode 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 Output Connector Item H Connects the TC 324B to attached heater blocks and sensor thermistors When used wit
5. RATURE control Item C to the desired temperature Observe setting On METER Set the LOOP SPEED switch item G to fast Switch the METER SELECTOR switch Item E to 77 Control Set the OUTPUT switch Item B to auto The OUTPUT LED will be lit to indicate that power is being applied to the heater Observe the METER to assure that the temperature is approaching the set temperature The HIGH and Low LED s indicate the direction of heating control NOTE If the system is setup properly this is all that is needed to maintain a constant temperature in the chamber 10 Allow time for the system to stabilize at the desired temperature Set the METER switch Item E to 72 Monitor This will display the read ing of the monitor thermistor submerged in solution This reading will most likely be lower than the platform set temperature due to the thermal gradient between the platform and the solution The tem perature at the sample T2 thermistor reading can be adjusted to the desired setting by increasing the SET TEMPERATURE setting as described in step 6 above This is an example of static solution warming and is the simplest form of temperature control Publication 5700 001 REV C 3 Single Channel Heater Controller Warner Instruments Setup Cont d Temperature control is more complex in a system where solu tion continuously flows across the bath The best method for providing stable temperature control for a flowing solution
6. Single Channel Heater Controller Model TC 324B WARNER ISTRUMEN AUTOMATIC TEMPERATURE CONTROLLER WARNER A INSTRUMENTS A Harvard Apparatus Company Publication 5700 001 REV C WEEE RoHS Compliance Statement EU Directives WEEE and RoHS To Our Valued Customers We are committed to being a good corporate citizen As part of that commitment we strive to maintain an environmentally conscious manufacturing operation The European Union EU has enacted two Directives the first on product recycling Waste Electrical and Electronic Equipment WEEE and the second limiting the use of certain substances Restriction on the use of Hazardous Substances RoHS Over time these Directives will be implemented in the national laws of each EU Member State Once the final national regulations have been put into place recycling will be offered for our products which are within the scope of the WEEE Directive Products falling under the scope of the WEEE Directive available for sale after August 13 2005 will be identified with a wheelie bin symbol Two Categories of products covered by the WEEE Directive are currently exempt from the RoHS Directive Category 8 medical devices with the exception of implanted or infected products and Category 9 monitoring and control instruments Most of our products fall into either Category 8 or 9 and are currently exempt from the RoHS Directive We will continue to monitor the application of
7. h Series 20 chambers and platforms the CC 28 heater cable connects here The in line solution heaters also connect here Thermistor Recorder Outputs Items J BNC connectors are provided to send thermistor readings T1 and T2 output signals to a data acguisition system or chart recorder Outputs are calibrated to 100 mV C Up Down LED Item K Red and yellow LED s indicate relative power applied to heater Publication 5700 001 REV C s Single Channel Heater Controller Warner Instruments Control Description Rear panel 120 VAC to 220 VAC Conversion ATTENTION PLEASE READ BEFORE APPLYING POWER TO YOUR UNIT The unit has been set to be used with 120 VAC If the VAC needs to be changed to 220VAC enclosed you will find a kit power cord 1 and fuses 2 to be used to convert the unit from 120VAC to 220 VAC The unit uses only one fuse the second one is sent as spare Follow these instructions to change the unit s from 120VAC or 220VAC Power Entry Module Fuse holder side view Push out drawer to access the Spare Fuse i Active Fuse Depending on AC Voltage being used turn VAC selector switch to 110VAC or 220 VAC Publication 5700 001 REV C Carefully pry open the fuse holder from the inside by using a small flat screwdriver Replace fuse according to voltage being used Item 64 0100 Model TC 324B use F
8. ii 11 Specifications anali 11 Accessories and replacement partsS iii 11 CC 35 Connector pin designations iii 13 Warranty and Service cccccsssessscssssssnssssscsessssssseeassssssseeaseesees 13 Warranty 13 Service NOES LL AUE OLA nda 13 Single Channel Heater Controller Warner Instruments Introduction The TC 324B Single Channel Automatic Heater Controller from Warner Instruments is a versatile and simple to use thermal control device Although designed for use with Warner Series 20 chambers or in line solu tion heaters this instrument can be easily adapted for use with custom built equipment according to the requirements of the user Total automatic control of heating power 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 the thermal delay characteristics intrinsic to the environment Features of the TC 324B include Dual thermistor design Automatic and manual modes e Selectable loop speed optimizes system speed and stability e Simultaneous monitoring of system temperature and a separate point of interest e Optimized for use with Warner perfusion and imaging chambers e Compatible with SH 27B In line Solution Heater Provides 18 W of heating power into a 80 load THIS EQUIPMENT IS NOT DESIGNED NOR INTENDED FOR USE ON HUMAN SUBJECTS
9. ilities using 220 240 V line voltages If the replacement fuse also fails please call Warner Instruments for assistance B Occasionally a knob on the front panel will loosen after long use These are collet style knobs and are tightened with a screw located under the knob cap To gain access to the adjust ment screw pry the cap off with a thin bladed screwdriver or similar tool C Should service be required please contact the factory The problem may often be corrected by our shipping a replacement part Factory service if required will be expedited to minimize the customer inconvenience Publication 5700 001 REV C gt Single Channel Heater Controller Warner Instruments Appendix Conto D Instruments are inspected immediately upon receipt and the customer is notified if the repair is not covered by the warranty Repairs can often be completed in 1 2 days from our receipt of the instrument E If factory service is required please observe the following instructions 1 Package the instrument with at least 3 inches of cushioning on all sides Use the original shipping carton if it is available 2 Insure the shipment for its full value 3 Include with the shipment an explanation of the problem experienced IMPORTANT CUSTOMERS OUTSIDE OF THE U S Please be sure to contact us before return shipping any goods We will provide instruc tions so that the shipment will not be delayed or subject to unneces sa
10. ing the bath temperature The connector end plugs directly into the TC 324B OUTPUT CONNECTOR Item H Assembly instructions 1 Assemble the Series 20 chamber as described in the instructions supplied with the chamber 2 Connect the outboard end of the CC 28 cable to the Series 20 platform a First attach the two blue 3 pin connectors on the cable to the heater resistors on the platform Publication 5700 001 REV C 2 Single Channel Heater Controller Warner Instruments Setup 3 4 Vi 6 7 8 9 b Next insert the larger thermistor white wires or white band on the cable into the small hole in the side of the platform HINT To assure good thermal contact between the thermistor and platform place a drop of mineral or immersion oil in the thermistor hole prior to insertion Place the small bead thermistor into the chamber reservoir NOTE You will most likely need to restrain the cable and thermistor bead as the bead must be completely submerged for accurate temperature measurements Fill the solution bath to the desired level HINT For accurate temperature control protect the microscope stage from drafts The solution surface offers a large surface area for heat exchange and minimizing air flow in the immediate vicinity will ease your temperature control requirements Turn the controller POWER 07 Switch the METER SELECTOR switch Item E to Set Temp and adjust the SET TEMPE
11. nterest Using Other Devices A CC 35 cable assembly is required for connecting other external devices to the TC 324B heater controller See the Appendix for CC 35 pin designations Publication 5700 001 REV C 5 Single Channel Heater Controller Warner Instruments Appendix Specifications Maximum Output Voltage Maximum Output Current Maximum Load Resistance Manual Voltage Range Maximum Output Power Power Requirements Power Fuse 3AG Size Front Panel Recorder Outputs Rear Panel Input Temperature Range Meter Display Meter Readouts Enclosure 12 VDC 1 5A 8 00 0 0 to 12 0 VDC 16 W into a 9 Q load 100 130 or 200 260 VAC 50 60 Hz 0 5 A Slo Blo for 100 130 VAC 0 25 A Slo Blo for 200 260 VAC T1 control T2 monitor BNC reporting 100 mV C T2 thermistor monitor BNC input calibrated at 10 0 KQ at 25 C Ambient to 50 C 3 5 digit LED display of C or V Set temperature T1 control temperature T2 monitor temperature Output voltage to heater 17 0 x 3 5 x 12 0 in W x H x D Accessories and Replacement Parts CC 28 CC 35 Publication 5700 001 REV C Cable assembly for Series 20 heater platforms Cable assembly with unterminated outboard ends Single Channel Heater Controller Warner Instruments Appendix Conto Color cn LL ETRE TT I 2 Red Heaterpomer T2 Monitor e No connection Thermistor common N C N C Control Thermistor T1 N C Heater gro
12. or 120 VAC 0 50 Amp 5x20mm Slow Blow For 220 VAC 0 25 Amp 5x20mm Slow Blow 2 Single Channel Heater Controller Warner Instruments Control Description Conto T2 Input Used as an optional thermistor input for those configurations where a T2 Monitor thermistor is not included in the normal setup such as with an In line Heater Sensed thermistor readings can be dis played on the METER and sent to a recording device via the standard T2 OUTPUT BNC on the front panel NOTE Do not use this input if a T2 Monitor thermistor is currently connected to the OUTPUT CONNECTOR Item H on the front panel Ground Terminals Provides separate connections for chassis and circuit ground Banana jacks are bridged when shipped from the factory The TC 324B can be used to drive the heater blocks for Warner Series 20 chambers or for providing power to other devices such as our In line Solution Heaters NOTES a Please refer to the front panel schematic on page 6 for orientation b Turn both the SET TEMPERATURE control Item C and the MANUAL VOLTAGE control Item D fully counterclockwise to zero Setup Series 20 Chamber Setup The CC 28 cable assembly is used to connect Series 20 chambers to the TC 324B heater controller The chamber end of the cable includes two connectors that attach to the resistive heaters in the heater platform Two thermistors are also provided one for feedback and one for monitor
13. or electrical eguipment for measurement and laboratory use Class I TC 324B and TC 344B 1 the undersigned hereby declare that the eguipment specified above conforms to the above Directive s and Standard s Publication 5700 001 REV C Place Hamden Connecticut USA i Signature kal Full Name Ralph Abate Position Business Manager
14. ry expense in clearing U S Customs Publication 5700 001 REV C Single Channel Heater Controller Warner Instruments Appendix CE Certifications EMC Declaration of Conformity CE MARKING EMC Application of Council Directive 89 336 EEC Standards To Which Conformity Is Declared Manufacturer s Name Manufacturer s Address Equipment Description Equipment Class Model Numbers EN55022 Class A EN61000 3 2 EN61000 3 3 EN50082 1 1992 EN61000 4 2 EN61000 4 3 ENV50204 EN610000 4 4 EN610000 4 8 EN610000 4 11 Warner Instrument Corp 1125 Dixwell Avenue Hamden CT 06514 Tel 203 776 0664 Heater Controller ITE Class A TC 324B and TC 344B 1 the undersigned hereby declare that the eguipment specified above conforms to the above Directive s and Standard s Publication 5700 001 REV C Place Hamden Connecticut USA 4 4 Signature be JA ar Full Name Ralph Abate Position Business Manager Single Channel Heater Controller Warner Instruments Appendix Conto LVD Declaration of Conformity CE MARKING LVD Application of Council Directive 73 23 EEC Standards To Which Conformity Is Declared Manufacturer s Name Manufacturer s Address Eguipment Description Eguipment Class Model Numbers EN 61010 1 1993 Warner Instrument Corp 1125 Dixwell Avenue Hamden CT 06514 Tel 203 776 0664 Heater Controller Safety reguirements f
15. the RoHS Directive to its products and will comply with any changes as they apply Do Not Dispose Product with Municipal Waste Special Collection Disposal Required 2 Single Channel Heater Controller Warner Instruments Table of Contents SUBJECT PAGE INTO UCI ci 2 Nomenclature Text Conventions Control Description ccocaccccononon Front panel Arv cages iaia IS AAA Output Switch Item B Set Temperature Control Item C o cocininninnicinnnmmmmmrrrer Manual Voltage Control item D iii Meter Selector Switch and Meter Item E Meter Item Plica Rella Loop Speed Switch Item G ssssssssssssssssssssssrrrrssssssrrrrrressnnssrrrneennnnsnnrreneee Output Connector Item H Thermistor Recorder Outputs Items J ssssssssssesssssssssssssssssessesssssssssssseenees Up Down LEDS Hno da 4 Rear Panel AC Conversion T2 INput Ground Terminals QCD tanel linate drei iti 6 Series 20 Chamber Setup 6 Assembly instruclioNs pi eeta ua ala 6 Operating With Other Equipment mmmmmmmnerannann 8 Load Resistance Thermistor Considerations riee 8 Operation aida is 9 Automatic MOde ie 9 Manual MODOS dida 9 Connection to External Devices iin 10 In Line Heaters Using Other DEVicesS rrierierie ieri neon 10 Appendix i
16. und Monitor Thermistor T1 Heater Publication 5700 001 REV C Single Channel Heater Controller Warner Instruments Appendix Warranty and service Warranty The model TC 324B is covered by our Warranty to be free from defects in materials and workmanship for a period of two years from the date of shipment If a failure occurs within this period we will either repair or replace the faulty component s This warranty does not cover instrument failure or damage caused by physical abuse or electrical stress inputs exceeding specified limits In the event that instrument repairs are necessary shipping charges to the factory are the customer s responsibility Return charges will be paid by Warner Instruments Inc Normal business hours are 8 30 AM to 5 30 PM EST Monday through Thursday and 8 30 AM to 5 00 PM on Friday Our offices are located at 1125 Dixwell Avenue Hamden CT 06514 and we can be reached by phone at 800 599 4203 or 203 776 0664 Our fax num ber is 203 776 1278 In addition we can be reached by e mail at support warneronline com or through our Web page at http www warneronline com Service notes Please refer all questions regarding service to our Engineering Department A If the instrument POWER light fails to light check the fuse at the rear panel located in the black POWER INPUT MODULE If the fuse is found to be defective replace it with a 5x20 mm 0 5 A slow blow fuse 0 25 A for fac
17. y using a heated chamber platform an in line solution heater or a combination of both Automatic Mode In Automatic Mode the TC 324B maintains the temperature of the con nected heater thermistor system at the value set by the user The selectable LOOP SPEED control Item G is used to adjust the speed of the feedback loop in the heater thermistor system which controls the rate of change of its output voltage Non Warner heater systems with feedback thermistors can be used in automatic mode provided they are compatible with the TC 324B reguirements LOOP SPEED is normally set to fast to provide the shortest time between the application of power to the heater element and the sensing of temperature at the thermistor For heater thermistor systems with long response times the fast setting will cause the measured temperature to overshoot the tar get by a large amount resulting in system oscillation For this condition try medium or slow settings to find the optimum feedback rate If the temperature of the CONTROL THERMISTOR is more than 0 5 C above the set temperature the voltage applied to the heater element will be immedi ately set to 0 V removing power to the heater The output voltage will remain at 0 V until the temperature of the CONTROL THERMISTOR becomes less than 0 5 C above the set temperature at which point power will be gradually re applied to disallow the system temperature to fall too far below the temperature set point
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