OPERATING MANUAL EchoThermJ DIGITAL CHILLING
Contents
1. the display will show the chamber temperature The display is a four digit LCD with decimal for the heater chiller temperature and colon for the timer In addition there are three green LED s on the front panel keyboard They tell when the display is in the TIMER mode TEMP mode or that AUTO OFF is activated When a target temperature has been set the display will toggle between the target and actual chamber temperatures The TEMP LED will light when the actual temperature is displayed NOTE The front door of the unit can be completely removed if wanted Just open the door wide and lift it straight up It is a handy feature for cleaning or other uses REAR PANEL The rear panel of the IN3O IN40 has an connector jack for the power supply input and the main On Off switch In addition the rear panel has the I O port for the RS232 and the reorder label The I O port will be discussed later in the chapter on the RS232 The reorder label tells the model number serial number operating voltage of the unit power consumption and the address information for Torrey Pines Scientific The I O port will when used with the proper connector allow the user to write software to control the unit remotely by a computer This can be simple settings or complex temperature time profiles VIII DISPLAY The display is a liquid crystal type with four 5 8 high digits When in the temperature mode there is a decimal between the unit and tenth degree wi2. C for the IN40 The units have a below ambient temperature range from ambient room temperature This range is about 16EC to 20EC and is load dependent lt may take longer to reach very low temperatures when the chamber is filled with large samples 3 To target a new or different temperature simply depress and hold the UP or DOWN ARROW until the display shows the new temperature desired Please note that the unit must be displaying temperature to do this If the unit is in the timer mode then the TEMP key must be depressed first 4 To turn off the target temperature the unit has to be turned off at the AC input Scrolling the target temperature back to room temperature will cause the unit to target this as a new temperature Only turning the unit off and on again will remove the target temperature The user can easily see if a target temperature exists by seeing if the TEMP LED is flashing The only exception to this is when AUTO OFF is used When AUTO OFF is activated and the timer counts down to zero the heater chiller will turn off and will not have a target temperature note at this point that the TEMP LED is not toggling SETTING TIMER 1 Depress and release the TIMER key This will shift the display to the timer mode 2 Depress and hold the UP ARROW until the time wanted is in the display Depressing and holding the DOWN ARROW will move the timer setting to a lower value When the UP or DOWN ARROW is released the timer
3. will start to count down to zero When the timer counts down to zero the audible alarm will sound ten times NOTE Switching between TIMER and TEMP on the display can be done any time during a run without affecting the target temperature or timer To do this simply depress and release either the TEMP or TIMER keys SETTING AUTO OFF AUTO OFF is an on off toggle key which activates the AUTO OFF function When the key is depressed the AUTO OFF light will come on This then tells the heater chiller to turn off when the timer counts down to zero If no timer value is set the AUTO OFF function will not have any affect on the operation of the unit Also AUTO OFF can be deactivated at any time during a timer count down without affecting the timer 1 Depress and release the AUTO OFF key This activates this function and illuminates the Auto Off LED and tells the unit to turn off the heater chiller when the timer counts down to zero 2 To turn off this function simply depress and release the AUTO OFF key again The AUTO OFF LED will go off X CALIBRATION amp POWER FAILURE PROTECTION NOTE The unit stores calibration and target temperature information in memory even through power failures The temperature calibration is set at the factory and should be accurate enough for most applications However the user may wish to calibrate the unit to his own standard This can be done in the field following the instructions below The c
4. OPERATING MANUAL EchoThermJ DIGITAL CHILLING INCUBATOR MODEL IN30 IN40 12VDC DOCUMENT NUMBER IN30 06 TABLE OF CONTENTS GENERAL PAGE l INTRODUCTION 3 I WARRANTY 3 II RETURN OF ITEMS 3 IV CAUTIONS 3 4 V SET UP 4 5 VI GENERAL DESCRIPTION 5 OPERATION VII FRONT AND REAR PANEL 6 7 VIII DISPLAY 8 IX SETTING TEMPERATURE TIMER AND AUTO OFF 8 9 X CALIBRATION amp POWER FAILURE PROTECTION 10 11 XI OTHER OPERATIONS RS232 11 12 I INTRODUCTION Congratulations on your purchase of a Torrey Pines Scientific EchoThermJ Model IN30 or IN4O Digital Chilling Incubator You will find it easy to use and maintain Please read these instructions carefully to insure that you receive the maximum benefit from it I WARRANTY Torrey Pines Scientific warrants this unit to be free from defects in material and workmanship for a period of one year from the date of purchase If repair or adjustment is necessary within the one year period and has not been the result of abuse or misuse please return the unit freight prepaid and correction will be made without charge Out of warranty products will be repaired on a charge basis Be sure to fill in and return the enclosed warranty registration card II RETURN OF ITEMS Authorization must be obtained before returning items for any reason When applying for authorization please include data regarding the reason the items are to be returned For your protection items must be ca
5. alibration may be done at a single point or at two separate temperatures for straight line interpolation CALIBRATION Single point calibration is used for maximum accuracy However the unit is sent to the user with two point calibration for accuracy at every temperature If single point calibration is used be sure to clear the memory first Follow the instructions below for both single point and two point calibration If single point calibration is used then the calibration must be reset each time the target temperature is set The calibration set at the factory two point is very accurate and should do well for all applications Single Point Calibration 1 Clear the calibration in memory by first turning the unit off Then depress and hold the TIMER key while turning the unit on again The memory will now be cleared 2 Set the unit to the target temperature to be calibrated Measure the chamber temperature using your laboratory standard Be sure to allow the chamber and your thermometer time to equilibrate at the target temperature you desire 3 Push and hold the TIMER key for five seconds until the display shows the chamber temperature of the instrument 4 Touch the UP or Down arrow until the temperature in the display of the IN30 IN40 agrees with the temperature as measured in the chamber by your standard 5 Touch the TIMER key again After a second or two the unit will display all zeros Touch the TEMP key and the display w
6. he present temperature Note If there is no Target Temperature the unit will send the message A no target set CR Auto status is reported as A Auto On CR or AAuto Off CR Set Command Target Temperature A Timer B Auto C Change display to temperature indicator D Change display to Timer indicator E For example To set a temperature target of 50 OEC the command string is as follows A space 50 0CR To set a Timer for one hour B space 010000CR To set Auto off on C space ONCR To set Auto off off C space OFFCR To change the display mode to temperature indicator D space CR To change the display mode to timer indicator E space CR If the command string is valid the unit will respond with the message ACommand OK CR and if the command is incorrect A Command Failed CR
7. ill show the target and actual temperatures The unit is now calibrated at that temperature Two Point Calibration For two point calibration one calibration temperature must be above 37 0 C and the other must be below 37 0 C For best results use temperatures around 10 0 C and 60 0 C Follow the calibration procedure as for a single point Then repeat the procedure at the second point When you calibrate the second point the calibration of the first point is not affected However all other temperatures will adjust to a straight line through the two calibration points NOTE Measuring the chamber temperature is easy to do but not necessarily accurately Generally speaking glass thermometers found around a lab are not accurate enough or readable enough to do a good job Good certified glass thermometers are available from lab supply dealers as are fairly accurate digital thermometers POWER FAILURE PROTECTION The IN30 IN40 stores the targeted temperature in memory If power fails and returns the unit will return to the temperature it was running before the power failure Also the AUTO OFF light will be flashing to tell the user that a power interruption has occurred To turn off the AUTO OFF light simply touch the TEMP key The user can then determine if the interruption has caused a problem with the samples being run It should be noted that the unit does not distinguish between a power interruption and when the unit is inten
8. lished steel Since the unit is Peltier driven there is a fan in the chamber and one on the rear of the unit The internal fan is used to keep the chamber at a uniform temperature throughout There is an inner chamber door of clear lexan to help hold the chamber temperature while viewing the sample Temperature is sensed by a microchip inside the chamber The settable temperature range is from 4 0EC to 7O OEC The unit has a membrane keypad with tactile touch and audible feedback for setting temperature timer and auto off The timer is in hours and minutes when displaying hours When the timer counts down to minutes only the display will show minutes and seconds The timer can be set to 99 99 hours minutes maximum When the timer counts to zero it will sound the audible alarm The unit can be set to turn off the heater chiller at the end of a timed event by using the AUTO OFF function The IN3O IN40 is supplied with an RS232 port for taking data or for instructing the unit from a computer Programming the unit to do complex profiles is possible through the RS232 port More information is available on this in a later chapter VII FRONT AND REAR PANEL FRONT PANEL Jr TORREY PINES SCIENTIFIC FRONT PANEL The front panel of the IN30 IN40 Chilling Incubator has a digital display and keyboard for monitoring and controlling all heater chiller and timer functions When the power is first turned on
9. radle the unit from the underside Two people should always be used to move the unit 3 Plug the power supply cable into the jack on the rear of the unit Plug the line cord into the power supply Plug the other end of the line cord into a properly grounded three wire outlet of proper voltage 4 Position the unit on a bench where it has at least 6 15 24 cm clearance from the back of the unit to the wall bench or other obstruction The cooling fan on the rear of the unit needs to draw air clearly to cool the Peltier unit Also there must be about 12 30 48 cm clearance on either side of the unit to allow proper venting 5 Place the wire racks provided into the slots selected 6 Turn the unit on by the main On Off switch on the rear panel The LCD on the front panel will illuminate and be in the temperature display mode The fans on the rear panel and inside the instrument chamber will start to run The instrument is now ready to use VI GENERAL DESCRIPTION The Torrey Pines Scientific IN3O IN40 Chilling Incubators are digitally controlled Peltier driven chilling incubator Because they are Peltier driven they have no CFC s or other refrigerating gas Also being Peltier driven these units have the ability to heat and cool and control exactly at or near ambient room temperature These units can hold temperatures accurately and reproduce temperatures exactly The chamber is molded ABS plastic and the racks are electropo
10. refully packed to prevent damage in shipment and insured against possible damage or loss Torrey Pines Scientific will not be liable for damage resulting from careless or insufficient packing A 15 restocking charge will be made on all unauthorized returns NOTE Torrey Pines Scientific reserves the right to make improvements in design construction and appearance without notice IV CAUTIONS HEATED SURFACES The Model IN30 IN40 Chilling Incubator has a temperature range from 4EC 39 2EF to 70EC 158 0EF At 7OEC the wire racks and other metal surfaces inside the chamber are hot enough to cause burns if touched Please use care when placing samples into or removing samples from a heated chamber ELECTRICAL The IN30 IN40 Chilling Incubators are made to operate from a universal bench top power supply that takes AC inputs from 100VAC to 260VAC 50 60Hz and converts that to 12 volts DC for the unit This make the instrument intrinsically safe since it uses only low voltage DC to operate Even so take the normal care and precautions one would use with any electrical appliance This product is suitable for installation category Il pollution degree Il 3 ENVIRONMENTAL OPERATING CONDITIONS The IN30 IN40 is intended for indoor use Ambient temperatures for the lab should not exceed the range of 15EC to 22EC for proper performance of the instrument Temperatures from 5EC to 40EC will not affect the structure of the unit Maximum
11. relative humidity of 80 for temperatures up to 31EC decreasing to 50 for relative humidity at 40EC should not be exceeded CONDENSATION Condensation can occur in the sample chamber when working at very low temperatures for long periods in a humid environment Precautions should be taken to assure that your samples are not affected Something as simple as placing a paper towel on the bottom of the chamber can help If condensation needs to be completely eliminated a good amount of desiccant may be needed If condensation occurs it will run toward the front of the chamber where it can easily be cleared GENERAL The IN30 IN40 is designed for laboratory or field use and for use only as instructed in this manual If the instrument is used in a manner not specified by the manufacturer the protection provided in the design of the equipment may be impaired V SET UP INSTRUCTIONS The IN30 IN40 Digital Chilling Incubator is an extremely simple to use set and forget unit The digital microprocessor design and PID temperature control will assure that the correct temperature as set is attained and held exactly SET UP 1 Unpack the unit carefully Be sure to save the packing material in case the unit needs to be returned to the factory for service 2 The unit weighs 45 65 pounds 20 4 kg 29 4kg is bulky and has no handles It is best to have two people remove the unit from its box and place it on the lab bench Always c
12. th a AC for degrees centigrade in the last place on the right When in the timer mode the display will show a colon between the middle two digits The display will show only temperature or timer In the timer mode the display will show 99 99 hours minutes maximum settable When the timer counts down past the last hour the display will switch and show minutes seconds When the display is in the temperature mode the green LED under the TEMP button will be on When the display is in the timer mode the green LED under the TIMER button will be on IX SETTING TEMPERATURE TIMER AND AUTO OFF All of these functions are easily set from the keyboard Please note that the keyboard has both tactile and audible feedback SETTING TEMPERATURE 1 Depress and release the TEMP key if the unit has just been turned on it will already be in this mode 2 Depress and hold the UP or DOWN ARROW until the display scrolls to the target temperature desired this range is from 4 0E C to 70 0EC Release the arrow key The unit will now proceed to the target temperature instructed NOTE The display will now toggle between the target and actual temperatures This will show the user both parameters The LED under TARGET will toggle and illuminate only when the actual temperature is displayed Also note that to achieve the minimum temperature of 4EC the ambient temperature of your laboratory should not be over 22EC for the IN30 and 18 C to 20
13. tionally turned off Therefore when the unit is turned back on it will go back to the target temperature that was running before the unit was turned off XI OTHER OPERATIONS The IN30 IN40 Chilling Incubator has been designed with an RS232 interface The port is on the rear of the unit and is a standard D subminiature connector This interface is input and output This means that the unit can be controlled remotely from a computer to perform any number of procedures or routines as complicated as you wish The interface also can be used to collect data from the unit for record keeping or for regulatory agencies as needed The instructions for connection and use follow RS232 INTERFACE SPECIFICATION Parameters 2400 baud 8 data bits 1 stop bit no parity No handshake hardware or software is necessary It will work well on a Windows terminal program per these settings All communications settings and queries are done using ASCII characters with the carriage return as the terminating character CR1 Pins in use on the RS232 jack are Pin 2 RXD data from incubator to PC Pin 3 TXD data from PC to incubator Pin 5 Ground Query Command Request current temperature a Request current timer b Request auto mode status Request target temperature d For example to request current temperature program you need to send two characters aCR where ACRQ is carriage return and the unit responds xx xCR where xx x is t
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