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9/17/2020  

 

 

Page 19 of 44 

QNW TC 1 User’s Guide

3.4. 

Troubleshooting 

If the submersible pump has operated without being immersed in water, it may not prime properly.  If this 
occurs, place one drop of detergent on the pump intake and try again. 

If the 

TC 1 

display indicates that there is inadequate coolant, it may be that the circulating water is too warm. 

Add ice to the water to cool it down. 

If a circulating bath is used as the water source, it may not be possible to maintain a flow rate of 200 mL per 
minute.  While this condition will limit the lowest temperature attainable, it may be partially compensated by 
using colder circulating liquid.  Below about -25 °C, 30% methanol in water is generally recommended as the 
coolant. 

If the set temperature is near room temperature and too close to the temperature of the cooling water, the 
sample holder temperature may oscillate around the set temperature.  In this case, changing the temperature 
of the cooling water (for example by adding ice) should stop the oscillation.  Cooler circulating water can 
result in improved performance of the cuvette holder at low temperatures, whereas warmer water can 
improve performance at very high temperatures. 

If a cuvette shorter than 44 mm is used, it may be difficult to remove. Use a taller cuvette instead. 

3.5. 

Error Messages 

When errors occur, the line 1 of the 

TC 1

 Temperature Controller display presents an error code.  Line 3 of 

the display identifies the error and line 4 of the display presents possible solutions. The most common events 
that cause errors to be displayed are loose cables or inadequate coolant flow.  For errors not easily solved, 
contact QNW at www.qnw.com/contact-us/ or [email protected]. 

Specific error messages include the following. 

 

5 – cell out of range 

warnings:

 loose cable, sensor failure 

The temperature controller is not receiving a reasonable response from the sensor on the cuvette tower.  
Either the sensor has failed or a cable is not making a good connection. 

 

6 – cell out of range 

warnings:

 loose cable, check cable 

The temperature controller is not receiving reasonable responses from either the cell tower or heat exchanger 
sensors.  Since it is very unlikely for both to fail, probably a cable is loose. 

 

7 – heat exchanger error 

warnings:

 loose cable, sensor failure 

The temperature controller is not receiving a reasonable response from the sensor on the heat exchanger.  
Either the sensor has failed or a cable is not making a good connection. 

Содержание TC 1

Страница 1: ...C 1 MAN 2 2 Revision 0 Effective Date 9 17 20 Web Page http www qnw com Description TC 1 Temperature Controller for Quantum Northwest Peltier Controlled Cuvette Holders QNW TC 1 Temperature Controller User s Guide ...

Страница 2: ...mply with procedures in Quantum Northwest product user guides or use of the products in violation of applicable laws rules or regulations Quantum Northwest shall not be liable for errors or damages on products or performance due to using non Quantum Northwest genuine parts Warranty The material contained in this document is provided as is and is subject to being changed without notice in future ed...

Страница 3: ...oduct or loss of important data Do not proceed beyond a CAUTION notice until the indicated conditions are fully understood and met WARNING A WARNING notice denotes a hazard It calls attention to an operating procedure practice or the like that if not correctly performed or adhered to could result in personal injury or death Do not proceed beyond a WARNING notice until the indicated conditions are ...

Страница 4: ...Stopping the QNW TC 1 Temperature Controller 12 2 1 Installing the QNW TC 1 Temperature Controller 12 2 2 Starting the QNW TC 1 Temperature Controller 14 2 3 Stopping the QNW TC 1 Temperature Controller 15 3 Step by Step Instructions for Using the QNW TC 1 Temperature Controller 16 3 1 Instrument Overview 16 3 2 Detailed Instructions 16 3 3 External Computer Control 18 3 4 Troubleshooting 19 3 5 E...

Страница 5: ...plication Startup Window 31 6 2 Application Control Window 32 6 3 Application Menus 33 6 4 File Menu 33 6 5 Tools Menu 33 6 6 Temperature Control 33 6 7 Temperature Ramping 34 6 8 Stirrer Control 34 6 9 Show Script Panel 34 6 10 Command Text Box 36 6 11 Plot Menu 36 6 12 Data Shown 37 6 13 Single Sample Status Panel 37 6 14 Temperature Control Status 38 6 15 Heat Exchanger Temperature 38 6 16 Targ...

Страница 6: ...fety practices and hazards information instructions for installing and maintaining the components of the QNW TC 1 Temperature Controller and troubleshooting information The T App Help file located on the T App CD if purchased Quantum Northwest T App Help 1 2 Other Precautions Do not block any ventilation grills present on the QNW TC 1 Temperature Controller Use of the QNW TC 1 Temperature Controll...

Страница 7: ...equirements of the Electromagnetic Compatibility EMC Directive and the Low Voltage electrical safety Directive commonly referred to as the LVD of the European Union Quantum Northwest has confirmed that each product complies with the relevant Directives by testing a prototype against the prescribed EN European Norm standards Proof that a product complies with these directives is indicated by the CE...

Страница 8: ...er Versa 20x2 TC 1 Controller QUANTICS TC 1 Controller Comply with the essential requirements of the following applicable European Directives Electromagnetic Compatibility EMC Directive 2004 108 EC Low Voltage Directive 2014 35 EU RoHS Directive 2011 65 EU Conformity is assessed in accordance to the following standards EMC Directive Emissions EN 61326 1 2013 Group 1 Class A Immunity EN 61326 1 201...

Страница 9: ... qX3 TC 1B Controller CD 250 TC 1 Controller t2 Sport TC 1 Controller CD 350 TC 1 Controller t2x2 Sport TC 1 Controller Cyl 100 TC 1 Controller TLC 50 Legacy TC 125 Controller Flash 300 TC 1 Controller Turret 4 TC 1 Controller Luma 40 TC 1 Controller Turret 400 TC 425 Controller qpod TC 1 Controller Turret 6 TC 1 Controller qpod 2e Integrated Control Versa 20 TC 1 Controller QUANTICS TC 1 Controll...

Страница 10: ...y is IEC 61010 I Do not to use this equipment for measurements within measurement categories II III and IV 1 7 Pollution Degree The pollution degree is IEC61010 2 Pollution degree 2 applies to a normal indoor atmosphere 1 8 Overvoltage Category The overvoltage category installation category is CAT II See IEC 664 IEC 61010 1 9 Environmental Conditions The area should have a dust free atmosphere wit...

Страница 11: ...single phase AC voltage three wire system active neutral earth and should be terminated at an appropriate power outlet receptacle that is within reach of the power cord For safety reasons a separate power outlet receptacle should be provided for each unit in the system The use of extension cords or outlet adaptors is not recommended WARNING Shock Hazard Danger of electrocution Good electrical grou...

Страница 12: ...x power cable 1x USB cable 1x CD containing T App software if ordered This manual Note Any additional items ordered are not listed here Any differences from the original order should be referred immediately to your Quantum Northwest sales office Do not discard any packaging components or filler materials Installing the QNW T App Software if ordered Follow the instructions provided with the softwar...

Страница 13: ...ary only to make the appropriate connections 2 Position the bucket to within 75 cm 30 in above or below the spectrometer CAUTION Caution Position the bucket in a location that minimizes the risk of spilling the liquid contents 3 OPTIONAL If a gas such as nitrogen is to be used as dry gas for minimizing condensation at low temperatures secure the tank to a solid object in the vicinity of the spectr...

Страница 14: ...id sample into the cuvette 2 Place the cuvette in the cuvette holder 3 Place the plastic lid on the cuvette holder 4 OPTIONAL If you wish to monitor the temperature inside the cuvette plug a standard Series 400 or Series 500 thermistor probe not provided into the inch phone jack labeled probe in the back panel of the TC 1 Place the end of the probe in a region of the sample in the cuvette where it...

Страница 15: ...ature control The temperature will then change and stabilize 2 3 Stopping the QNW TC 1 Temperature Controller 1 While temperature control is running and the Start page is being displayed press SET Fig 3 to turn off temperature control To turn off stirring go to the Set Stirrer page and press SET again 2 After measurements are completed turn off power on the back of the TC 1 controller This action ...

Страница 16: ...perature of the sample holder and a temperature sensed by an external probe may be plotted vs time Simple text scripts may be used to automate multiple operations T App is provided with a USB cable to connect your computer to the TC 1 Full instructions for using T App may be found in the associated Help file 3 2 Detailed Instructions Using the Menu Button control arrows Figure 4 TC 1 Menu Button c...

Страница 17: ...Note Pressing the SET button while the Display page is active results in no action To start or stop controller functions access the four other pages Set Target Temperature Set Stirring Set Ramping Set Position Set Target Temperature Figure 6 TC 1 Set Target Temperature page Set Target Temperature To set the Target temperature use the up and down arrows Press SET to retain this new Target and initi...

Страница 18: ...main as set The fastest possible ramp is determined by how fast the cuvette holder is able to reach the target temperature without ramping Attempting to ramp too quickly especially at high and low temperature extremes will result in a nonlinear ramp The slowest ramp that may be set on this page is 0 09 C minute If needed much slower ramps may be set through software commands Discontinue Ramping Pr...

Страница 19: ... warmer water can improve performance at very high temperatures If a cuvette shorter than 44 mm is used it may be difficult to remove Use a taller cuvette instead 3 5 Error Messages When errors occur the line 1 of the TC 1 Temperature Controller display presents an error code Line 3 of the display identifies the error and line 4 of the display presents possible solutions The most common events tha...

Страница 20: ...r on the heat exchanger is reading a temperature above 60 C Temperature control has been shut down to prevent damage to the Peltier element Either the water was too warm or the rate of flow was inadequate to draw sufficient heat from the heat exchanger 9 Invalid command The controller has been sent an invalid text command ...

Страница 21: ... must be executed only by QNW technicians or authorized personnel The water hoses and the submersible pump should be inspected prior to each usage to ensure that they are intact Replace the nylon tubing when it becomes discolored or cracked Periodically replace the water stored in the bucket to minimize the growth of microorganisms When not in use the pump bucket and tubing may be stored dry 4 2 S...

Страница 22: ...by a standard 15 pin serial extension cable male connector on one end and female on the other No driver installation should be needed Otherwise the serial linkage will be established through a USB connection between the computer and the controller In this case the controller includes electronics which convert the USB connection to a serial communications port However for the port to be available t...

Страница 23: ...der see command class 14 14 single 24 dual 34 turret or linear multi sample holder 5 2 Controller Firmware Version F1 VN What is the Version Number of the controller firmware F1 VN 2 22 The controller firmware version number is 2 22 5 3 Stirrer F1 MS What is the Maximum stirrer Speed F1 MS 2500 The maximum stirrer speed permitted is 2500 rpm F1 LS What is the Lowest stirrer Speed F1 MS 300 The low...

Страница 24: ...n F1 TC Turn temperature control off F1 TC What is the current status of temperature control F1 TC Temperature control status is off F1 TC R Report temperature control status when changed by a command F1 TC R Do not report temperature control status when changed 5 5 Target Temperature F1 MT What is the Maximum Target temperature setting allowed for this holder F1 MT 105 The maximum target temperat...

Страница 25: ...S E Stop including the ramp status in the instrument status response power on default 5 7 Current Sample Holder Temperature F1 CT What is the Current Temperature of the sample holder F1 CT 22 84 The current temperature is 22 84 ºC F1 CT 3 Periodically report current temperature every 3 seconds F1 CT Stop periodic current temperature reports F1 CT Restart periodic probe temperature reports using th...

Страница 26: ... PT NA Probe temperature is not available F1 PT Stop periodic probe temperature reports The interval is retained F1 PT Restart periodic probe temperature reports using the current interval the power on default is 3 seconds F1 PA S 0 5 Set the temperature interval for Automatic reporting of the Probe temperature to 0 5 C during a ramp Increment must be positive without sign in tenths between 0 1 an...

Страница 27: ...ved the ramping process does not begin until it is turned on In either case the ramping state is on until the ramp is completed or cancelled If this command is sent while a ramp is in progress the ramp status will change to W waiting and the controller will drive at maximum to the last target temperature set F1 RR What is the current ramp rate setting Depending on the R R state as specified below ...

Страница 28: ...emperature At any time a new ramp rate and target temperature can be set to start a new ramp Once the ramp is completed if you want to start another ramp even using the same ramp rate you must send ramp rate set command Otherwise setting a new target temperature later will initiate a ramp to that target temperature Note The following details aid in running T App The minimum settable ramp rate usin...

Страница 29: ...s finished moving Original reply was OK rather than DL 1 F2 DL 3 Device locate move to position 3 Device should be initialized prior to using this command for the first time F2 PI Device initialize move to home then to position 1 and reply when done F2 DL 1 Device is in position 1 F2 PL 4 Device locate move to position 4 and reply when done Device should be initialized prior to using this command ...

Страница 30: ...ed as described above When the user changes a SAM setting using the front panel controls such as temperature control On Off stirrer speed ramp rate the identical change will automatically be made for REF F1 LK Query the current link state F1 LK or F1 LK T App uses this command to turn linking off in the temperature controller and handles linking of the reference settings to the sample settings in ...

Страница 31: ...artup Window is displayed while the program searches for a Temperature Controller by checking each active COM port on the computer beginning with the highest When a Controller is found this startup window is replaced by the Application Control Window If a Controller is not found the startup window changes to that below Click on the areas where the pointer changes to a hand for further information ...

Страница 32: ...without connecting to a sample holder in order to plot previously saved time temperature data without being connected to a Controller 6 2 Application Control Window Click on the areas where the pointer changes to a hand for further information on the Application Menus the Temperature Plot or the Status Panel The image above shows the T App Application window as it would appear using a TC 1 Tempera...

Страница 33: ... on the individual menu item where the pointer changes to a hand for further information on that menu item 6 5 Tools Menu Click on the individual menu item where the pointer changes to a hand for further information on that menu item Tools menu items for a single sample holder system 6 6 Temperature Control Tools Temperature Control menu for a single controller including multi position controllers...

Страница 34: ... clicked the right side of the Application Control Window will open to show a vertical panel containing a text display with button controls and other information near the bottom The snapshot below was taken when the program was in the middle of running a script This particular script is used to do a performance run on each sample holder the performance run for each sample holder is included as the...

Страница 35: ...snapshot of the full window above The controls at the bottom of the script panel change depending on whether a delay or wait command is being executed and on whether the current command being executed is inside a loop Click on the individual control below where the pointer changes to a hand for further information on that control NO SCRIPT RUNNING DELAY WAIT COMMAND NOT INSIDE A LOOP CURRENT COMMA...

Страница 36: ...g the arrow at the right end of the edit box will cause a drop down list to appear showing a few valid commands For example immediately after the program is started the text box will look like the figure below If you click on one of the items in the list that item will appear in the box at the top and the list will disappear You may then edit the command as needed You may also enter a command that...

Страница 37: ...Shown Dual with external probe Single or multi sample with external probe 6 13 Single Sample Status Panel Click on the individual controls where the pointer changes to a hand for further information on that control WITHOUT PROBE ATTACHED WITH PROBE ATTACHED ...

Страница 38: ...g circulated through the sample holder and on the temperature control settings As a warning when the heat exchanger temperature is within 10 C of the preset limit typically 60 C the color of the label will change to orange To correct the problem you must reduce the temperature of the water for example by adding ice or cold water to the coolant container If the heat exchanger temperature exceeds th...

Страница 39: ...ontrol menu item may also be used to change the stirrer properties 6 18 External Probe Status The External Probe Status will be displayed only if a Series 400 or Series 500 thermistor probe is connected to the 1 4 inch phone jack in the back of the sample holder This probe input is intended to provide a means to directly measure the temperature of the sample in the cuvette The number to the left o...

Страница 40: ... the modified axis label to appear on the plot BEFORE CLICKING ON THE BLACK RECTANGLE AFTER CLICKING ON THE BLACK RECTANGLE The label on the horizontal axis can be changed by clicking on the small black rectangle near the lower right corner of the plot this will make a text box appear for changing the label After new text has been entered hitting the Tab or Return key will cause the text box to cl...

Страница 41: ...nds Progress of the Delay and Wait commands is tracked in the Delay Wait Countdown Display at the bottom of the Script Panel D Delay INTERVALS before running the next command Example D 120 will cause a delay of 120 of the INTERVAL units as defined in the first line of the script see the Example Script which sets the INTERVAL to 0 01 minutes While the delay is active a countdown of the number of sc...

Страница 42: ... as to whether the temperature is still changing or has met the criteria for being stable controlled The parameter 2 specifies the maximum number of status queries that will be sent before the wait is canceled The time between status queries is the product of the parameter 1 and the script INTERVAL as defined in the second line of the script see the Example Script While the wait is active the numb...

Страница 43: ...repeat forever or until the Cancel Script button is clicked P If the plot window is displayed while a script is running the data in the plot mayl not be automatically updated unless a delay D or wait W command is being processed This program command will cause the plot window to update replot to show all data collected to that point CTD This command will clear the time and temperature data from th...

Страница 44: ...his command will cause the sample position to change to the next higher number If the current position is the highest number position it will move to position 1 PL This command will cause the sample position to change to the next lower number If the current position is 1 it will move to the highest number position TT or TT Increments or decrements the sample holder target temperature RT or RT Incr...

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