Scan-Sense TC2000 User Manual

Portable temperature calibrator

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USER'S MANUAL

TC2000

PORTABLE TEMPERATURE

CALIBRATOR

A universal stable and accurate temperature well for

calibrating

and verifying temperature sensors

Page 1

Table of Contents

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Page 1 USER’S MANUAL TC2000 PORTABLE TEMPERATURE CALIBRATOR A universal stable and accurate temperature well for calibrating and verifying temperature sensors Page 1...
Page 2 Scan-Sense AS. All efforts have been made to ensure the accuracy of this handbook. We at Scan-Sense are always striving to improve our products and handbooks, therefore we would greatly appreciate being informed of any errors found in our product or in its manual.
Page 3: Table Of Contents
TC2000 user’s manual Contents Introduction ...................... 5 Certification ..................... 5 Warranty ......................5 Conventions used in this document ..............5 Introduction to dry-block calibrators ..............7 Preparation ...................... 8 Unpacking and inspection ................8 Items supplied with the unti ................8 Input power connection .................
Page 4 TC2000 user’s manual System information ..................32 Settings ......................32 Automatic calibration ..................33 Semi automatic calibration ................35 Calibration report ................... 37 4.10 Software upgrade utility ..................38 Technical tips ....................39 General information regarding accurate dry-block calibrations ..... 39 The importance of testing instrument validation ..........40 The importance of a traceable standard ............
Page 5: Introduction
TC2000 user’s manual Introduction Cerification Scan-Sense AS certifies that the TC2000 complies with its published list of specifications at the time it was manufactured. Scan-Sense AS also certifies that its calibration measurements are traceable to Norwegian Accreditation and to the calibration facilities of other International Standards Organization (ISO) members.
Page 6 TC2000 user’s manual CAUTION: Is used when a procedure may cause damage to equipment or affect operation WARNING: Is used when a procedure may cause personal injury to the reader or other persons A SYMBOL USED AS A WARNING TO DENOTE A HAZARD CONFORMITÉ...
Page 7: Introduction To Dry-Block Calibrators
RS232 communication port. It is also designed to be “user friendly”. The TC2000 has a numeric keypad, or softkey controls, for setting the well temperature. Menus are used to define other data for the TC2000. The display shows the defined “Set temperature”...
Page 8: Preparation
Figure 3 TC2000 orientation and location of items. Items supplied with the unit The cables, insert etc. that are used with the TC2000 are located in compartments within the unit. The TC2000 Parts List identifies each by part name and part number.
Page 9 TC2000 user’s manual Aluminum inserts - Dry Well - Liquid filled (option) Insert, aluminum, of 2“ x 6” or 50 mm x 150 mm diameter and lenght with: 2 holes of 6.5 mm bore, 2 holes of 3,5 mm bore,...
Page 10: Input Power Connection
TC2000 user’s manual Figure 3. TC2000 Orientation and location of items. Input power connection The required power is either 110 VAC or 230 VAC, 50/60 Hz. Always connect the power cable supplied with your unit to a grounded or earthed power outlet.
Page 11: Getting Started
TC2000 user’s manual Getting started This section contains a description of the TC2000 operator control and connection points to help you get started quickly. The section also provides instructions for pre-calibration cleaning of the well and inserts (essential to the process) and step-by-step guidance for performing a calibration.
Page 12: Software Startup
After choise 1. Calibration is selected either by pressing enter when 1. is highlighted or by default the computer will load the TC2000 application software This will take a couple of miniutes and the status wil be shown at the lower part of the screen viewing a countdown proceedure.
Page 13: Lcd Display
TC2000 user’s manual 3.1.2 LCD display The menus and softkey-controls and information you need to define para-meters during a calibration are displyed in the unit’s LCD (1/4VGA) display. 3.1.3 Well and insert The well is an aluminum block with a reference sensor placed at its base.
Page 14: Numerickeypad
ON or OFF control is provided by a swich- and-plug connector. 3.1.6 RS232 communication The RS232 serial communication port is used to connect the TC2000 to a PC during re-calibration and for remote operation when calibrating a sensor. 3.1.7 Sensor connection Different types of sensors can be connected for testing.
Page 15: Sensor Positioning, Connection And Calibration Accuracy
TC2000 user’s manual Sensor positioning, connection and calibration accuracy The calibrator well is always the source for heat or cold for the sensor. However, it is possible to connect the sensor such that the calibrator is the reference and the temperature reading is shown at the QVGA display, or the sensor can be connected to an external measurement device for the readnig.
Page 16: Procedure To Run Calibration
(Glass wool is not to be used in liquid inserts). Power ON the TC2000. The opening menu will appear. If necessary, refere to the chapter 4 Operation menus, controls and indicators.
Page 17: Procedure To Run A Liquid Bath Calibration
TC2000 user’s manual Procedure to run a liquid bath calibration 1. Follow 1-15 in chapter 3.3 2. Choose the right liquid for the temperature range: Water: 0 °C to 98ºC Oil : 40 °C to 150ºC NOTE: Insulation pad has to be used at the top of the insert during the calibration.
Page 18: Calibrating A Thermostat
TC2000 user’s manual 6. TIPS! You will get an extreme stability (typically +/- 0.001ºC) and accuracy as a stirred ice bath (0ºC). Just set the impeller speed to 100% and set point to -3ºC and wait for the freezing point to come.
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Page 21: Finish The Calibration
TC2000 user’s manual Calibration mode numerial: Finishing the calibration 7. When finished, adjust temperature to ambient and allow the temperature well to cool to temperature below 70ºC. 8. Pull the temperature sensor(s) out of the insert. 9. Attach the extractor tool to the insert and pull the insert out of the temperature well.
Page 22: Defaults Values
Default set temperature = 25ºC (not changeable) Default temperatre units = °C Default reference sensor = Internal sensor (located in the TC2000 well) Default stabilization time = 17 minutes Default stabilization ∆ T = ±0.2°C Information is given in chapter’s 4.4 , 4.5 and 4.6 on how to alter some of these parameters.
Page 23: Pre-Calibration Cleaning Of Well And Insert
TC2000 user’s manual Pre-calibration cleaning of well and insert If necessary, clean the temperature well (interior) and insert (interior and exterior) before use. A dirty or oxidized surface can affect the transfer of heat between the well and the insert and may also cause the insert to stick in the well and be difficult to remove.
Page 24: Procedure For Cleaning The Exterior Of The Insert
TC2000 user’s manual 3.7.2 Procedure for cleaning the exterior of the insert 1. Insert dry, white paper and rub so as to remowe all dust, dirt or smudges from the exterior surface of the insert to ensure optimal heat or cold transfer from the temperature well.
Page 25: Operational Menus, Controls And Indicators
The 1⁄4 VGA LCD display will show Information regarding interaction, controls and the available menus. NOTE: The TC2000 uses the defined configuration values until they are changed. Therefor, it is important to ensure that the values are cor- rectly defined before starting a calibration.
Page 26: Manual Calibration
TC2000 user’s manual Manual Calibration Select choice 1. Manual calibration, to enter the manual calibration mode, the Configuration menu will then be displayed. This will enable you to configure your reference sensor and the type of sensor to be tested.
Page 27: Configuration
TC2000 user’s manual Configuration Important input connection information to remember: Channel A is the connector for the external “Reference sensor”. Channel B is the connector for the sensor to be tested “Test sensor”. 4.4.1 Reference sensor selection The NEXT softkey will allow you to navigate and change each setting by stepping up or down in the menu.
Page 28: Reference Correction
TC2000 user’s manual 4.4.3 Reference correction If you have selected an external sensor as the reference sensor, its correction values can be placed into the sensor correction table. Sensor correction will show the value as None (internal sensor or no correction data), and Table (sensor correction data).
Page 29 TC2000 user’s manual always be used whenever the Pt100 is defined as the reference sensor for this configuration , until you change the configuration. NOTE: It is very important to remember which reference sensor is being used, and whether or not you need to use the sensor correction table.
Page 30: Test Sensor
TC2000 user’s manual 4.4.4 Test sensor You can use 3. Test sensor: to select the type of sensor to be tested and to obtain information for connecting it to Channel B. The default selection is Pt100. To make a selection: Use the NEXT softkey to move to 3.
Page 31 TC2000 user’s manual 3. Volt selection : Select V using SELECT softkey and press CONFIG softkey to obtain Channel B connection information connection information. In CONFIG, use the UP or DOWN softkeys to define the voltage to temperature information from the Volt sensor, and the wiring connection information for the Voltage snesor.
Page 32: System Information
* Calibiration date TC2000 Well TC2000 SIM * Temperature range TC2000 Well TC2000 SIM On completion of a re-calibration of TC2000, the TCCal software will add the following data: * Next calibration TC2000 Well TC2000 SIM Settings By highlighting either of the sections can...
Page 33: Automatic Calibration
TC2000 user’s manual Automatic calibration Select choice 2. Automatic calibration, to enter the automatic calibration mode, the Calibration Sets menu will then be displayed. This will enable you to set up your calibrator to perform an automatic calibration task. Each calibration set may consist of up to 20 calibration temperatures.
Page 34 Calibration Set. At any stage in the calibration process one can define to simulate at stable state in order to force the TC2000 to make a measurement and proceed to the next set point temperature. Pressing View List in the soft key menu displays the calibration set points that have alredy been performed.
Page 35: Semi Automatic Calibration
TC2000 user’s manual Semi Automatic calibration Select choice 2. Automatic calibration, to enter the automatic calibration mode, the Calibration Sets menu will then be displayed. This will enable you to set up your calibrator to perform an automatic calibration task.
Page 36 When the temperature and sensor is at a stable state the calibrator will promt you for a temperature entry of your test sensor. Enter this using the numerical keypad on the TC2000. The calibrator will then continue to the next set point temperature.
Page 37: Calibration Report
9-Apr-02 14:19 --------------------------------------------------------------------------------------------------------------------------------- INTERMEDIATE INSTRUMENT Type of instrument : Temperature Calibrator Model : Tek Know TC2000 Sensor Interface Module : Input Ch.B OTHER Manufacturer : Scan-Sense AS Serial number : (SIM serial no.) Temperature range : (i henhold til input valg)
Page 38: Software Upgrade Utility
This will set up the calibrator so that it can receive a new application software from the PC. The transfere time and staus will be displayed on the PC TC2000 Upgrade Utillity program. Use a standard TC serial cable for transfere.
Page 39: Technical Tips
This chapter provides general, informative information about dry-block calibration and tips/hints to help you obtain accurate calibrations with the TC2000 dry-block calibrator. Dry-block calibration is recommended for calibrating industrial sensors such as RTD (Resistive Temperature Device), thermocouples, thermistors, bi-metal thermostats or liquid-in-glass thermometers, etc., because the dry-...
Page 40: The Importance Of Testing Instrument Validation
In other words, the sensor can be placed into the temperature block and its reading compared to the reading on the TC2000 display or it can be compared with the reading from an external thermometer.
Page 41: Calibrating A Short-Stem Probe
TC2000 user’s manual How the sensor is placed in the insert is of crucial importance to obtaining accurate calibration measurements. Regardless of what type of reference is used (i. e. internal or external) it is crucial that the sensor and the reference be at an equal distance when placed into the calibrator’s insert.
Page 42: Using The Calibrator As A Reference When Adjusting Measuring Devices
When to take the calibration reading With the TC2000, when the REF temperature, that is the temperature at the center of the well, has been stable +/- 0.2ºC for at east 10 minutes (default value), the display will show the message “Temperature stable, take reading”.
Page 43: The Importance Of Cleanliness To Attain High Accuracy Results
TC2000 user’s manual a larger mass bacause of the insert, so it reacts more slowly to temperature changes; see Figure 3 Temperature reference. The importance of cleanliness to attain high accuracy results The ability of any dry-block calibrator to provide accurate calibrations and performance depends on factors such as;...
Page 44: Specifications
TC2000 user’s manual Specifications TEMPERATURE RANGE Temperature range -40ºC* to +150ºC * Rel. ambient Accuracy ±0.3ºC Resolution 0.01ºC Gradients at 95ºC w/water 0.06ºC Stability (30 min. after normal stabilisation): * As a dry block ±0.02ºC * As a stirred liquid bath ±0.005ºC...