ScanSense TC Operating Manual
TC125
TC150
TC400
TC650
TEMPERATURE CALIBRATORS
USER’S MANUAL
Manual revision: 15 March, 2001
SCSMANP004
Copyrighted © 2001
User’s manual TC calibrators
Thank you
for purchasing a Tek Know temperature calibrators.
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 fulfil our vision to be our customers “First Choice”.
The TC125, 150, 400 and 650 are designed and
manufactured by :
Scan-Sense AS T el. +47 33 36 30 00
Bekkeveien 163 Fax: +47 33 36 30 01
N-3173 Vear www.scansense.no
NORWAY post@scansense.no
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User’s manual TC calibrators
Contents
1.1 Certification 5
1 .2 W arranty 6
1.3 Notice 6
1.4 Safety 7
2. INTRODUCTION 9
3. CALIBRATORS TC650 & TC400 11
3.1 PREP ARA TION 11
3.1.1 Preparing the Heating calibrators for use. 11
3.1.2 Power Requirements TC400 & TC650 13
3.1.3 Fuses 12
3.2 GETTING ST ARTED 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 CALIBRA TIONS 15
3.3.1 Calibration Procedure 15
3.3.2 Calibration at High T emperatures 16
3.3.3 Precaution 16
3.3.4 Test of thermostats 17
3.4 CALIBRA TION HINTS 18
3.4.1 Time Constants 18
3.4.2 High Accuracy 19
3.4.3 Heat loss to the Surroundings 20
3.4.4 Cleaning of block and Insert 2 0
4.0 CALIBRATORS TC125 & TC150 21
4.1 PREP ARA TION 21
4.1.1 Preparing the TC125 & TC150 for use 21
4.1.2 Power Requirements 21
4.1.3 Fuses 22
4.2 GETTING ST ARTED 22
4.2.1 Power on 22
4.2.2 Celsius – Fahrenheit setting 23
4.2.3 Default setting TC125 & TC150 2 4
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User’s manual TC calibrators
4.3 HOW TO EXECUTE CALIBRATIONS 25
4.3.1 Calibration Procedure TC125 & TC150 2 5
4.3.2 Calibration at Low T emperatures 2 6
4.3.3. Precaution 27
4.3.4 Test of Thermostats 27
4.4 CALIBRA TION HINTS 28
4.4.1 Time constants 28
4.4.2 High Accuracy 2 9
4.4.3 Heat loss to the Surroundings 29
4.4.4 Cleaning of Block and Insert 3 0
4.4.5 Method of calibration 30
5. RS 232 INTERF ACE 31
6. TECHNICAL SPECIFICA TIONS 32
6.1 TC125 & TC150 32
6.2 TC650 & TC400 33
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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
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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, buyer supplied software or interfacing, unauthorised modification
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
All rights reserved. Reproduction of any part of this manual in any form
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.
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User’s manual TC calibrators
1.4 Safety
!
WARNING
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 beyond a warning sign until the indicated conditions
are fully understood and met. If you are in doubt please contact your
nearest Tek Know dealer.
A dry block calibrator is constructed in such a manner that it is 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
needed during operation. Opening the calibrator during operation is very
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.
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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.
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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,
with a special designed temperature controller. A digital controller with
a dedicated CPU gives the TC calibrators 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 obtain this, the calibration conditions must 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. T ek 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.
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User’s manual TC calibrators
Pt 100 channel B
Figure 2-1, ‘Automatic calibration with internal reference’
RS232 Port 2
RS232 Port 1RS232 Port 1
PC with SC200
Signal Master SM300TC Calibrator
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Ref. Pt 100
channel A
Pt 100
channel B
RS 232 port 1
RS 232 port 2
PC with SC200
Signal Master SM300TC Calibrator
Figure2-2, ‘Automatic calibration with external reference’
User’s manual TC calibrators
3. CALIBRATORS TC400 & TC650
3.1 PREPARA TION
3.1.1 Preparing the heating calibrators for use.
Table 3-1. Items included with the TC400/650
temperature calibrators:
• T emperature calibrator: TC400 or 650
• Carrying case
• Power cord
• Test cable for thermostats
• T ool for changing inserts
• Insertion tube with 6.5 mm hole.
• Insertion tube with 10.5 mm hole.
• Calibration certificate
• User`s manual
3.1.2 Power requirements for TC400 & TC650
The TC400 & TC650 temperature calibrators areportable instruments
that require no physical installation other than connection to a grounded
ACpower source. Do not connect AC power until you have verified
that the line voltage is correct and that the proper fuse is installed.
Otherwise damage to the equipment may occure.
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