Scan-Sense Tek Know TC125 Manual de usuario

TC125

TC150

TC400

TC650

TEMPERATURE CALIBRATORS

USER’S MANUAL

Manual revision: 15 March, 2001

SCSMANP004

User’s manual TC calibrators

Thankyou

for purchasing a Tek Know temperature calibrators.

The Tek Know products are manufactured by Scan-Sense AS in ac-

cordance with our high quality standards in design, choice of compo-

nents and workmanship in order to achieve maximum customer satis-

faction and to fulfil our vision to be our customers “First Choice”.

The TC125, 150, 400 and 650 are designed and

manufacturedby:

Scan-Sense AS Tel. +47 33 36 30 00

Bekkeveien 163 Fax: +47 33 36 30 01

N-3173 Vear www.scansense.no

NORWAY [email protected]

User’s manual TC calibrators

Contents

1.1 Certification 5

1.2 Warranty 6

1.3 Notice 6

1.4 Safety 7

2. INTRODUCTION 9

3. CALIBRATORSTC650&TC400 11

3.1 PREPARATION 11

3.1.1 Preparing the Heating calibrators for use. 11

3.1.2 PowerRequirementsTC400&TC650 13

3.1.3 Fuses 12

3.2 GETTING STARTED 13

3.2.1 Power On 13

3.2.2 Celsius – Fahrenheit Setting 14

3.2.3 Default setting 14

3.3 HOW TO EXECUTE CALIBRATIONS 15

3.3.1 Calibration Procedure 15

3.3.2 Calibration at High Temperatures 16

3.3.3 Precaution 16

3.3.4 Test of thermostats 17

3.4 CALIBRATION HINTS 18

3.4.1 Time Constants 18

3.4.2 HighAccuracy 19

3.4.3 Heat loss to the Surroundings 20

3.4.4 Cleaning of block and Insert 20

4.0 CALIBRATORSTC125& TC150 21

4.1 PREPARATION 21

4.1.1 Preparingthe TC125 &TC150 for use 21

4.1.2 Power Requirements 21

4.1.3 Fuses 22

4.2 GETTING STARTED 22

4.2.1 Power on 22

4.2.2 Celsius – Fahrenheit setting 23

4.2.3 Default setting TC125 & TC150 24

User’s manual TC calibrators

4.3 HOW TOEXECUTE CALIBRATIONS 25

4.3.1 CalibrationProcedureTC125&TC150 25

4.3.2 Calibration at Low Temperatures 26

4.3.3. Precaution 27

4.3.4 Test of Thermostats 27

4.4 CALIBRATION HINTS 28

4.4.1 Time constants 28

4.4.2 HighAccuracy 29

4.4.3 Heat loss to the Surroundings 29

4.4.4 Cleaning of Block and Insert 30

4.4.5 Method of calibration 30

5. RS232 INTERFACE 31

6. TECHNICAL SPECIFICATIONS 32

6.1 TC125 & TC150 32

6.2 TC650 & TC400 33

User’s manual TC calibrators

1.1 Certification

Scan-Sense AS certifies that this product meets its published

specifications at the time of shipment from the factory. Scan-Sense AS

further certifies that its calibration measurements are traceable to

Norwegian Accreditation Standards and to the calibration facilities of

other International Standards Organisation members (FSO).

Scan-Sense AS declares that the following products :

TC125, TC150, TC400 and TC650

confirm to the following standards :

EN 500081-1 : 1992

EN 500082-1 : 1992

EN 61010 : 1993

EN 60742-1

IEC 801-2

DS 5104

User’s manual TC calibrators

1.2 Warranty

These Tek Know products are warranted against defects in material

and workman-ship for a period of one year from date of shipment.

During the warranty period, Scan-Sense will, at its option, either repair

or replace products that prove to be defective.

The product must be returned to a service facility designated by Scan-

Sense for warranty service or repair. The foregoing warranty will not

apply to defects resulting from improper or inadequate maintenance by

buyer, buyersupplied softwareorinterfacing, unauthorisedmodification

or misuse, operation outside of the environmental specifications for the

product, or improper site preparation or maintenance.

No other warranty is expressed or implied. Scan-Sense 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 Notice

what so-ever without Scan-Senses expressed written permission is

forbidden.

All efforts have been made to ensure the accuracy of this manual.

However, should any errors be detected, Scan-Sense would greatly

appreciate being informed of them.

The above notwithstanding, Scan-Sense can assume no responsibility

for any errors in this manual or of their consequences.

User’s manual TC calibrators

1.4 Safety

The warning sign denotes a hazard. Such warning labels are fitted to

several places on the calibrators. It calls attention to a procedure which,

if not correctly performed or adhered to, could result in injury or loss of

life.Do not proceed beyonda warning sign untilthe indicated conditions

are fully understood and met. If you are in doubt please contact your

nearest Tek Know dealer.

Adry blockcalibrator isconstructedin sucha mannerthat itis impossible

to operate it without generating hot areas that can be of danger. It is

very important the operator in charge of the calibrator is aware of the

potential dangers and that he relays this information to any other future

user.

There are no operational switches or buttons inside the calibrator that is

neededduring operation. Opening thecalibrator during operation isvery

dangerous due to high temperatures and high voltages. The calibrator is

only to be opened by qualified service personnel.

After the calibrator has been operated it may be very hot. Do not turn

off the calibrator if the temperature is above 400°C. The correct

procedure is to set the setpoint to 50°C. and allow it to cool below

100°C.

If the calibrator switches itself down during operation, this can be due

to the internal safety trip switch. In these cases please contact your

dealer because a new fuse will have to be installed.

WARNING

User’s manual TC calibrators

Failure to ground the temperature calibrator properly can result in

personal injury. Use grounded ac power outlet.

Place the temperature calibrator on an even surface and make sure

that the air inlet for the fan is not blocked. Connect the power cable to

the temperature calibrator and press the Line switch on the bottom

panel to turn it on. The calibrator must not be covered. The calibrator

must be used in an environment with free space of 0.5 m. above and

0.1 m, open space on either side and with satisfactory ventilation or

temperature control.

User’s manual TC calibrators

2. INTRODUCTION

The TC calibrators user manuals are intended to be used with the Tek

Know portable calibrators TC125, TC150, TC400 and TC650. The

TC Calibrators are constructed with a dry temperature variable well,

withaspecial designed temperature controller. Adigital controller with

adedicated CPU gives theTCcalibrators flexible controllability.Digital

control provides for adaptive control of the temperature, which saves

the operator time, and assures high accuracy and easy setting of

temperatures. The local LCD displays both the set temperature and

reference temperature simultaneously.

The display of the TC400 & TC650 has a resolution of 0.1°C, however

the PID controller works with a resolution of 0.01°C.Effectively this

means that a better stability than stated in the specifications may be

obtained.In order to obtainthis, the calibration conditionsmust be ideal.

First and foremost, the ambient temperature must be kept stable state

and longer stabilisation time for the calibrator must be allowed. This is

to compensate for the temperature influence on the electronics. They

come in a dedicated instrument case with assessories such as cable

and inserts.

The communication port RS-232 comes as a standard feature, for use

with a computer in the calibration process.Tek Know provides optional

calibration software for temperature. The TC calibrators together with

the SC200 calibration software and SM300 Signal master will give you

an automatic calibration system.

User’s manual TC calibrators

PC with SC200

Signal Master SM300TC Calibrator

Pt 100 channel B

RS232 Port 1RS232 Port 1

RS232 Port 2

Ref. Pt 100

channel A

Signal Master SM300TC Calibrator

Pt 100

channel B

PC with SC200

RS 232 port 1

RS 232 port 2

Figure 2-1, ‘Automatic calibration with internal reference’

Figure2-2, ‘Automatic calibration with external reference’

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