ScanSense TC2000 Operating Manual

USER’S MANUAL

TC2000

PORTABLE TEMPERATURE

CALIBRATOR

A universal stable and accurate temperature well for

calibrating

and verifying temperature sensors

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TC2000 user’s manual

Thank you

for purchasing a Tek Know temperature calibrator. The Tek Know products are manufactured by Scan-Sense AS in accordance with our high quality standards in design, choice of components and workmanship in order to achieve maximum customer

satisfaction and to full our vision to be our customers “First Choice”.

The TC2000 is designed and manufactured by:

Scan-Sense AS Tel: + 47 33 36 30 00 Bekkeveien 163 Fax: + 47 33 36 31 80 N-3173 Vear www.scansense.no NORWAY post@scansense.no

Scan-Sense AS reserves the right to make improvments or alterations

to our products without incurring any responsibility to make the same improvments or alterations to products previously sold.

SCAN-SENSE AS

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise without the prior permission of 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. The above notwithstanding, Scan-Sense can assume no responsibility for any errors in this handbook or of their consequenses.

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TC2000 user’s manual

Contents

1 Introduction ...................................................................................................... 5

1.1 Certication ..................................................................................................... 5

1.2 Warranty ......................................................................................................... 5

1.3 Conventions used in this document ................................................................. 5

1.4 Introduction to dry-block calibrators ................................................................. 7

2 Preparation ...................................................................................................... 8

2.1 Unpacking and inspection ............................................................................... 8

2.2 Items supplied with the unti ............................................................................. 8

2.3 Input power connection ................................................................................. 10

3 Getting started ............................................................................................... 11

3.1 Operation controls and connections .............................................................. 11

3.1.1 Software Startup ........................................................................................... 12

3.1.2 LCD display ................................................................................................... 13

3.1.3 Well and insert ............................................................................................... 13

3.1.4 Numerickeypad................................................................................................14

3.1.5 Power on / off ................................................................................................. 14

3.1.6 RS232 Communicatiion ................................................................................. 14

3.1.7 Sensor connection ......................................................................................... 14

3.2 Sensor positioning, connection and calibration accuracy .............................. 15

3.3 Procedure to run calibration .......................................................................... 16

3.4 Procedure to run a liquid bath calibration ...................................................... 17

3.4.1 Calibrating a thermostat .................................................................................18

3.4.2 Calibrating a sensor .....................................................................................18

3.5 Finish the calibration ..................................................................................... 21

3.6 Defaults values .............................................................................................. 22

3.7 Pre-calibration cleaning of well and insert ..................................................... 23

3.7.1 Procedure for cleaning the interior of the temperature well and insert .......... 23

3.7.2 Procedure for cleaning the exterior of the insert ............................................ 24

3.7.3 Instructions for handling Liquid-lled Insert ................................................... 24

4 Operational menus, controls and indicators .................................................. 25

4.1 Introduction .................................................................................................... 25

4.2 Main Menu ..................................................................................................... 25

4.3 Manual Calibration ........................................................................................ 26

4.4 Conguration ................................................................................................. 27

4.4.1 Reference seonsor selection ......................................................................... 27

4.4.2 Reference sensor conguration ................................................................... 27

4.4.3 Reference correction ..................................................................................... 28

4.4.4 Test sensor .................................................................................................... 30

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TC2000 user’s manual

4.5 System information ........................................................................................32

4.6 Settings ..........................................................................................................32

4.7 Automatic calibration ......................................................................................33

4.8 Semi automatic calibration .............................................................................35

4.9 Calibration report ........................................................................................... 37

4.10 Software upgrade utility ..................................................................................38

5 Technical tips ................................................................................................. 39

5.1 General information regarding accurate dry-block calibrations ..................... 39

5.2 The importance of testing instrument validation ............................................ 40

5.3 The importance of a traceable standard ........................................................ 40

5.4 Correct positioning of the probe in the temperature block ............................. 40

5.5 Calibrating a short-stem probe .......................................................................41

5.6 Using the calibrator as a reference when adjusting measuring devices

(meters/gauges) ............................................................................................ 42

5.7 The Time Constant inuence on temperature-well mass ............................... 42

5.8 When to take the calibration reading ............................................................. 42

5.9 The importance of cleanliness to attain high accuracy results ...................... 43

5.10 Insulating with glass wool to minimize cold/heat loss to surrounding air ....... 43

6 Specications ................................................................................................ 44

7 Electrical specications ................................................................................. 44

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TC2000 user’s manual

1 Introduction

1.1 Cerication

Scan-Sense AS certies that the TC2000 complies with its published list of specications at the time it was manufactured. Scan-Sense AS also certies that its calibration measurements are traceable to Norwegian Accreditation and to the calibration facilities of other International Standards Organization (ISO) members. Scan-Sense AS conrms that the TC2000 complies with the following standards:

EMC EN61326-1:1997+A1:1998: APP.A, immunity test requirements for equipment intended for use in industrial locations, as amended by EC Directive 9 2/31/Eec and the European Low Voltage Directive IEC 61010-1:90 + A1:92 + A2:95, amended by 93/68/EEC. To ensure compliance, please use screened/shielded serial communication leads (RS232).

1.2 Warranty

This product is guaranteed free from defects in material and workmanship for one (1) year from the date of shipment. During this warranty period, Scan-Sense AS will, as its option, either repair or replace the TC2000 should it prove defective. The product must be returned to a service facility designated by Scan-sense AS for warranty service or repair (see our worldwide adress le http:// www.scansense.no). The foregoing warranty will not apply to defects resulting from improper or inadequate maintenance by the purchaser, purchaser-supplied software or interfacing, unauthorized modication or misuse, operation exceeding the environmental specications for the TC2000, or improper site preparation or maintenance. No other warranty is expressed or implied by Scan-Sense AS, and Scan-Sense AS shall not be liable for any direct, indirect, special, incidental or consequential damages, whether based on contract, tort, or any other legal theory.

1.3 Conventions used in this document

We have provided this section of the User’s Manual to help you identify noteworthy symbols, terms and conventions used in this manual. Look for the following:

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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 EUROPÉENNE

GROUND OR EARTH

Terms and denitions:

The term “insert” is interchangable with “insert adapter” as an equipment identier for the 2-inch diameter, 6-inch long aluminum insert pleced into the temperature well.

We dene calibration as being able to compare the ability of the equipment to perform to a known standard. Temperature calibration provides a means of quantifying uncertainties in temperature measurement in order to optimize sensor and/or system accuracy.

LCD is a term meaning a quarter (1/4) VGA LCD screen. CARE is a memory jogger to ensure best results and safe use of the equipment. Connect only to the correct power voltage/frequency (read the label in the case). Always clean the temperature well and insert before use, and always remove the insert from the temperature well before moving or tran sporting the TC2000. Replace worm connection cables (only with approved connection cables). Earthed (or grounded) power sources only should be used.

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1.4 Introduction to dry-block calibrators

Dry-block calibration units provide the reliable heat (or cold) source needed to verify the accuracy of industrial sensors such as RTDs, thermocouples, thermostats, bi-metal thermometers or liquid in-glass thermostats. The TC2000 is designed to provide all the advantages offered by “dry well” temperature calibrators: Convenience of size, weight, speed, portability temperature range, stability and software interaction via 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 dene other data for the TC2000. The display shows the dened “Set temperature” and the resulting “Reference temperature” for the well temperature. Connection points at Channel A and B allow a variety of sensor hook ups and an RS232 connection for local PC or remote computer.

The dry well in the calibrator is heat or cold source, and a reference thermometer. That is, the thermometer (or sensor to be tested) is placed in the well and its reading is compared to the reading of the temperature in the calibrator’s display. The calibrator’s display shows both the dened temperature, as set by the operator, and the actual temperature that is measured by the internal reference sensor in the well.

Figure 1: Dryblockschematics

EXTERNAL REF.

CALIBRATOR DISPLAY

INTERNAL REF.

SENSOR TO BE TESTED

PELTIER ELEMENTS

HEATING BLOCK

COMPARISON

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TC2000 user’s manual

2 Preparation

2.1 Unpacking and inspection

* Inspect the packing container for any sign of damage. If the shipping

cartong is damaged, contact the carrier/shipper.

* Remove the unit from its packing container and inspect it for visible

signs of damage.

* Check that the equipment received matches the inventory. Report

ny discrepancies to Scan-Sense AS’s designated agent.

* Record any discrepancies from the inventory and/or visible damage

to the unit; see Figure 3 TC2000 orientation and location of items.

2.2 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 identies each by part name and part number.

TC2000 PARTS LIST DESCRIPTION OF ITEM: (1 OF EACH ITEM)

* GLASS WOOL, 1 PACK * TOOL, EXTRACTOR * CABLE, MAINSPOWER, 100 VAC DETERMINE TYPE REQUIRED, JAPAN * CABLE, MAINSPOWER, 110 VAC DETERMINE TYPE REQUIRED, USA * CABLE, MAINSPOWER, 230 VAC DETERMINE TYPE REQUIRED, EUR * CABLE, MAINSPOWER, 230 VAC, DETERMINE TYPE REQUIRED, UK * CABLE, TEST, 1 SET * USER’S MANUAL * CALIBRATION CERTIFICATE * RS232 CABLE * CONNECTOR KIT

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Aluminum inserts

- Dry Well

- Liquid lled (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, 2 holes of 4,5 mm bore, 1 hole of 8 mm bore, 1 hole of 10 mm bore and 1 hole of 12 mm bore.

OPTIONAL ITEMS

Liquid-lled Insert, aluminium, of 2” x 6” or 50 mm x 150 mm diameter and lenght with pop-off cap and impeller at bottom. Insert, aluminum, blank of 2” x 6” or 50 mm x 150 mm ‘ diameter and lenght. Oil to use with the Liquid-lled Insert.

CAUTION: Care should be taken to avoid spillover into the temperature

well when using Liquid-lled Inserts. Use only recommended oil/ liquids to ll the insert. Do not use glass wool with the Liquid-lled Insert.

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TC2000 user’s manual

Figure 3. TC2000 Orientation and location of items.

2.3 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.

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3 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.

3.1 Operation controls and connections

Very little operator interaction is required to begin calibration. The main operator interaction is via unit’s softkeys (or keypad) and LCD display, or via a (local) PC or other remote computer. Communication with the PC is via the unit’s RS232 serial port connector. To begin a calibration, you must:

* Fit the insert into the well. * Place the sensor(s) into the well and use glass wool to insulate

the sensor.

* Power on the unit ON. * Connect the sensor leads in Channel B. * Congure the sensor to be tested. * Set the temperature using the TC2000’s LCD display, softkeys or

numeric keypad.

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3.1.1 Software startup

When switching on the calibrator the rst

screen that is shown is a startup display while the internal computer loads the operating system Windows CE 2.12.

A Tast manager program will apear after the CE 2.12 is loaded. The task manager gives two choises

1. Calibration ( which is default) or

2. Firmware upgrade.

TC2000 user’s manual

start and will automatically be selected after 10 sec. of the Task manager appearing. Choise 2. is used when a new software or modication upgrade is to be entered into the CE computer. See seperate section for upgrade...

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. After loading is complete the main menu screen will be displayed and the calibrator is ready for calibration tasks.

Choise 1. calibration is the normal

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TC2000 user’s manual

3.1.2 LCD display

The menus and softkey-controls and information you need to dene 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. The well heats or cools to the temperature you set. The insert has holes bored to accommodate most sensors.The insert is aluminum and is precision-turned to t the well opening. An extractor tool is provided to remove the insert from the well.

IMPORTANT: The calibrator is calibrated with the external reference sensor

being insulated with supplied insulation material. to acheive the same result use insulation round the sensor undergoing test or calibration.

WARNING: Handle carefully when extracting a Liquid-lled Insert because

the liquid in the insert will be hot and may cause burns to any skin surfaces in contact with it.

CAUTION:

Care should be taken to avoid spillover into the temperature well when using Liquid lled Inserts. Use only recommended oil / liquids to ll the insert. Do not use glass wool with Liquid-lled Insert.

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3.1.4 Numeric keypad

The numeric keypad is used for entering data into the menus. It can also be used instead of the UP or DOWN softkeys when setting temperatures.

3.1.5 Power on/off

The power cable connection and the power 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. Channel A is for the external reference sensor. Channel B is for the sensor under test (test sensor).

TC2000 user’s manual

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