Isotech TTI-22 Operating Manual
TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
TRUE TEMPERATURE
INDICATOR
MODEL TTI-22
User Maintenance Manual/Handbook
Isotech North America
158 Brentwood Drive, Unit 4
Colchester, VT 05446
Phone: 802-863-8050
Fax: 802-863-8125
www.isotechna.com
sales@isotechna.com
The company is always willing to give technical advice and assistance where appropriate. Equally, because of the programme of
continual development and improvement we reserve the right to amend or alter characteristics and design without prior notice. This
publication is for information only.
Page 1 of 51
TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
CONTENTS
1.
ABOUT THE INSTRUCTION MANUAL ............................................................................................................... 4
2.
SAFETY INSTRUCTIONS ........................................................................................................................................ 4
2.1
G
ENERAL SAFETY INSTRUCTIONS
2.1.1
Liability............................................................................................................................................................. 4
2.1.2
Installation and Use .......................................................................................................................................... 5
2.1.3
Maintenance and Service .................................................................................................................................. 5
2.1.4
Disposal............................................................................................................................................................ 5
2.2
S
PECIAL SAFETY INSTRUCTIONS
2.3
S
AFETY SYMBOLS ON THE INSTRUMENT
3.
TTI-22 - AN OVERVIEW........................................................................................................................................... 7
4.
CHECKING THE SUPPLIED PARTS ...................................................................................................................... 8
5.
OPERATING ELEMENTS AND INSTRUMENT CONNECTIONS .................................................................... 9
5.1
5.2
5.1.1
5.1.2
5.2.1
5.2.2
5.2.3
5.2.4
TTI-22 F
TTI-22 R
RONT SIDE
Display and Function Keys................................................................................................................................. 9
Instrument Connections on Front Side ............................................................................................................. 10
EAR SIDE
Terminal Assignment of RS232 ........................................................................................................................ 11
Ethernet Terminal........................................................................................................................................... 11
External Power Adapter................................................................................................................................... 11
Battery Supply................................................................................................................................................. 12
............................................................................................................................................... 9
................................................................................................................................................ 11
............................................................................................................................ 4
.............................................................................................................................. 5
................................................................................................................... 6
6.
PUTTING TTI-22 INTO OPERATION ................................................................................................................. 13
6.1
A
SSEMBLING THE MEASURING SYSTEM
6.2
P
UTTING THE MEASURING SYSTEM INTO OPERATION
6.2.1
Getting Started with Pre-stored Sensor Parameters.......................................................................................... 14
6.2.2
Getting Started without Stored Sensor Parameters........................................................................................... 15
6.2.3
Switching TTI-22 Off....................................................................................................................................... 15
7.
CONFIGURING TTI-22..................................................................................................................................... 16
7.1
S
ETTING A PASSWORD
7.2
SETTING DATE AND TIME
7.3
SETTING THE TEMPERATURE UNIT
7.4
SETTING BACKLIGHT AND CONTRAST
7.5
ENTERING SENSOR PARAMETERS AND ASSIGNING TO A SENSOR INLET
7.5.1
Entering or Changing Calibration Parameters for a Sensor............................................................................... 18
7.5.2
Assigning Calibration Parameters to a Sensor Channel .................................................................................... 22
7.5.3
Assigning Calibration Parameters to a Sensor Channel via PC/RS232 ............................................................... 22
7.6
SELECTING DISPLAY TYPE
7.7
PERFORMING A SELF-HEATING TEST
8.
READING OUT MEASURING DATA.................................................................................................................. 26
8.1
TRANSFERRING MEASURING DATA VIA
8.2
TRANSFERRING MEASURING DATA VIA ETHERNET
9.
CALIBRATING AND ADJUSTING TTI-22 ......................................................................................................... 31
.......................................................................................................................................... 16
.................................................................................................................................... 17
.................................................................................................................................... 22
................................................................................................................... 13
............................................................................................ 14
....................................................................................................................... 17
.................................................................................................................. 18
................................................................... 18
..................................................................................................................... 24
RS232 ....................................................................................................... 26
................................................................................................. 29
10
LOCKING CALIBRATION PARAMETERS ......................................................................................................... 32
11.
OVERVIEW OF THE MENU STRUCTURE...................................................................................................... 33
11.1
MAIN MENU
....................................................................................................................................................... 33
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INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
11.2
11.3
SEL. DISPLAY & START (DISPLAY TYPE SELECTION
EDIT CONFIGURATION
........................................................................................................................................ 34
)................................................................................................ 34
APPENDIX A: TECHNICAL DATA................................................................................................................................ 36
A.1
TTI-22
AS HIGH-PRECISION RESISTANCE METER
A.2
TTI-22
AS HIGH-PRECISION THERMOMETER (SPECIFICATIONS WITHOUT SENSOR
A.3
GENERAL INSTRUMENT DATA
APPENDIX B: DECLARATION OF CONFORMITY.................................................................................................... 38
APPENDIX C: TROUBLESHOOTING........................................................................................................................... 39
C.1
TTI-22 E
C.2
PC ERROR MESSAGES
C.3
PROBLEMS WITH INSTRUMENT ACTIVATION
APPENDIX D: TEMPERATURE CALCULATION METHODS................................................................................... 42
D.1
DIN IEC 751: I
D.2
INTERNATIONAL TEMPERATURE SCALE
APPENDIX E: CALIBRATING AND ADJUSTING TTI-22.......................................................................................... 45
E.1
CALIBRATING AND ADJUSTING
E.2
CALIBRATING AND ADJUSTING THE SENSOR
APPENDIX F: CONVERTING THE TEMPERATURE UNIT....................................................................................... 50
APPENDIX G: FIRMWARE VERSIONS......................................................................................................................... 51
RROR MESSAGES
........................................................................................................................................... 40
NDUSTRIAL PLATINUM RESISTANCE THERMOMETERS AND PLATINUM MEASURING RESISTORS
.............................................................................................................................. 37
.................................................................................................................................... 39
1990
TTI-22................................................................................................................. 45
................................................................................................... 36
) ................................................. 36
.......................................................................................................... 41
.......... 42
(ITS-90) .......................................................................................... 44
.......................................................................................................... 49
Page 3 of 51
TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
1. About the Instruction Manual
This instruction manual informs you about the installation and the safe handling and use of the
instrument. Make sure that the instruction manual is easily accessible to all personnel involved
with the instrument. Pay special attention to the safety instructions and warnings in the manual
and on the instrument.
Symbols in this Instruction Manual
This instruction manual features the following symbols:
Warning: This symbol calls attention to the risk of accidental injuries or damage to
goods. Do not proceed until the indicated conditions for averting this threat are fully
understood and met.
Caution: This symbol calls attention to the risk of instrument damage or measurement
errors. Do not proceed until the indicated conditions for averting this threat are fully
understood and met.
Information: This symbol calls attention to any additional information of use to the
operator.
2. Safety Instructions
• Read the instruction manual at hand before using TTI-22.
• Follow all hints and instructions contained in this instruction manual to ensure the
correct use and safe functioning of TTI-22.
2.1 General Safety Instructions
2.1.1 Liability
• The instruction manual at hand does not claim to address all safety issues associated
with the use of the instrument and samples. It is your responsibility to establish health
and safety practices and determine the applicability of regulatory limitations.
• Isothermal Technology Ltd only warrants the proper functioning of TTI-22 if no
adjustments have been made to the mechanics, electronics, and software.
• Only use TTI-22 for the purpose described in this instruction manual. Isothermal
Technology Ltd is not liable for damages caused by incorrect use of TTI-22.
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INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
2.1.2 Installation and Use
• TTI-22 is not an explosion-proof instrument and therefore must not be operated in
areas with risk of explosion.
• TTI-22 is only suitable for inside use.
• The installation procedure should only be carried out by authorized personnel who are
familiar with the installation instructions.
• Do not use any accessories or wearing parts to TTI-22 other than those supplied or
approved by Isothermal Technology Ltd.
• Make sure all operators are trained to use the instrument safely and correctly before
starting any applicable operations.
• In case of damage or malfunction, do not continue operating TTI-22. Do not operate
the instrument under conditions which could result in damage to goods and/or injuries
and loss of life.
• Check if the wetted parts are chemically resistant to the samples and rinsing agents.
2.1.3 Maintenance and Service
• The results delivered by TTI-22 not only depend on the correct function of the
instrument, but also on various other factors. We therefore recommend to have the
results checked (e.g. plausibility tested) by skilled personnel before consequential
actions are taken based on the results.
• Service and repair procedures may only be carried out by authorized personnel or by
Isothermal Technology Ltd.
2.1.4 Disposal
• Concerning the disposal of TTI-22 observe the legal requirements in your country.
2.2 Special Safety Instructions
• Only use shielded cables for connecting the sensors.
• Only connect separated extra low voltage circuits (SELV according to EN60950) to the
instrument.
• Keep an appropriate term for repeating the calibration of the used reference resistor
and/or sensor. Recalibrate TTI-22 and sensors at least once a year.
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• The following cases require you to perform an instrument self-check (turn off the
instrument for at least 3-4 seconds) and control the set parameters (RRef, Sensor
Calibration, User Password):
- before large measuring cycles
- after extraordinary operating conditions
- after service work on the instrument
• Avoid exposing TTI-22 to direct sunlight and major temperature changes. After large
ambient temperature changes, TTI-22 requires some time to adjust to the ambient
conditions.
2.3 Safety Symbols on the Instrument
Fig. 2 – 1 Warning symbol next to the battery compartment
There is a warning sign on the rear of the instrument, next to the battery compartment.
Warning:
• Observe the correct polarity when placing the batteries.
• Only use 1.5 V AA batteries or 1.2 V AA rechargeable batteries of the same type and
charge condition.
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TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
3. TTI-22 - An Overview
The TTI-22 measures temperatures in °C, K or °F with exceptional accuracy. Combined with
calibrated high-precision platinum resistance thermometers, TTI-22 allows a reduction of
system measurement uncertainties to an absolute minimum of as little as 1mK (0.001°C).
Connect TTI-22 to one or two Pt 100 industrial platinum resistance thermometers, whose
temperature is calculated according to DIN IEC751. Pt 25.5 or Pt 100 standard platinum
resistance thermometers are also suitable for use as temperature sensors. The temperature of
standard thermometers is calculated according to ITS-90 (International Temperature Scale
1990). Individual calibration parameters for up to 30 different sensors can be stored. This
provides easy recalibration and good traceability of the temperature measurement.
TTI-22 is operated via a menu-driven user interface. The current value, the mean value and
the standard deviation of 5 up to 50 values can be continuously displayed. The self-heating
effect of the sensor can be determined via the integrated self-heating test. TTI-22 has a serial
RS232 interface and an Ethernet terminal. The installed web server delivers all important data
to any given browser via internet or intranet.
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TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
4. Checking the Supplied Parts
TTI-22 was tested and packed carefully before shipment. However, damages may occur
during transport.
1. Keep the packaging material (box, foam piece, transport protection) for possible
returns and further questions from the transport and insurance company.
2. Check the delivery for completion by comparing the supplied parts to those noted in
Table 4.1
3. If a part is missing, contact your Isotech representative.
4. If a part is damaged, contact the transport company and your Isotech representative.
Table 4.1: Supplied Parts
Pcs. Article Description
1 TTI-22
1 Instruction manual
1 RS232 cable
2 Lemo connectors to suit TTI-22
1 Mains Lead
1 Traceable calibration certificate
1 UKAS calibration certificate (optional extra)
1 Carrying case (optional extra)
1 Power supply
2 AA Batteries
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TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
5. Operating Elements and Instrument Connections
5.1 TTI-22 Front Side
Fig. 5 – 1 Front view
5.1.1 Display and Function Keys
Function keys
0,1,2,.., 9 (numerical keys) Menu selection and digit input
CE (CLEAR, BACKSPACE) To delete the last entered character
ESC (ESCAPE) • In the menu mode: To change to the next higher
• To toggle between menu items or input fields
M (menu) To change from measurement mode to menu mode
EXP To enter the exponent of a number
(ENTER) To confirm the input
menu level
• In an active input field: To abort the input. The
input is cancelled and the prior field content is
restored
within one menu
• In statistics menus: To change the amount of
measuring values applied for calculating the
mean value and the standard deviation
Backlight On/Off
<On/Off> key
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ISSUE 1 – 08/08
Display:
1 Sensor input 1 (channel 1)
2 Calibration number of sensor
3 Temperature calculation method or ‘Warning’
4 Temperature display or error message
5 Power supply
6 Symbol for measurement mode (blinking)
7 Sensor input 2 (channel 2)
Fig. 5 - 2 Example of a display
5.1.2 Instrument Connections on Front Side
You can connect up to two sensors to TTI-22 via 4-pole sockets (Fig. 5 - 1, "CH 1" and "CH
2") type LEMO 1S304.
Fig. 5 - 3 Assignment of LEMO socket
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TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
5.2 TTI-22 Rear Side
1 Battery compartment for two batteries type AA
2 Ethernet (LAN)
3 RS232 serial interface
4 Inlet for external power adapter
Fig. 5 - 4 Rear view
5.2.1 Terminal Assignment of RS232
Pin 1: not assigned
Pin 2: TXD (transmit data)
Pin 3: RXD (receive data)
Pin 4: not assigned
Pin 5: GND (ground)
Pin 6: not assigned
Pin 7: not assigned
Pin 8: not assigned
Pin 9: not assigned
5.2.2 Ethernet Terminal
The LAN terminal type RJ45 complies with the standard IEEE 802.3 (10 MBit).
5.2.3 External Power Adapter
Connect the delivered power adapter to the inlet (see (4) inlet for power adapter in Fig. 5 - 4).
The power supply is 7.5 V DC at a maximum of 3 A. As long as a power adapter is connected,
the batteries are not used.
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INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
5.2.4 Battery Supply
Warning:
• Observe the correct polarity when placing the batteries.
Under typical operating conditions the delivered Alkaline cells run for approx. 10 hours. In
case of frequent battery usage, we recommend the use of rechargeable batteries for
environment protection.
The use of backlight, RS232 or the network cuts the battery runtime short. When using these
features, use batteries with large capacity (>2000 mAh).
Changing batteries
To open the lid of the battery compartment, stick a screwdriver into the mould and press the
lid down, away from the housing.
Observe the correct polarity when placing the new batteries (see sign in battery
compartment).
Charging batteries
Remove rechargeable batteries from the instrument for charging them.
• Only use 1.5 V AA batteries or 1.2 V AA rechargeable batteries of the same type and
charge condition.
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INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
6. Putting TTI-22 into Operation
1. Check if the calibration numbers on these parts are identical:
- on the factory or UKAS calibration certificate
- directly at the sensor
- on the parameter printout, if existent ("Configuration Parameters")
2. Check if the serial number on TTI-22 (on the rear side of the instrument) matches the
number on the optional parameter printout ("Configuration Parameters").
3. If the above-mentioned numbers do not match, be sure to contact the manufacturer or
supplier of the instrument.
6.1 Assembling the Measuring System
Warning:
• Only use the delivered power adapter, Mat. No. 43768.
1. Place two 1.2/1.5V AA batteries in the battery compartment at the rear of the
instrument or connect the delivered power adapter.
2. If necessary, connect the sensor to the measuring cable (some sensors are supplied
with non-detachable cable).
3. Plug the sensor cable into the socket with the designation "CH 1" on the front side of
the instrument.
• Observe the correct polarity when placing the batteries.
• Only use 1.5 V AA batteries or 1.2 V AA rechargeable batteries of the same type and
charge condition.
Fig. 6 - 1 TTI-22 with connected sensors
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TRUE TEMPERATURE
INDICATOR MODEL TTI-22
ISSUE 1 – 08/08
6.2 Putting the Measuring System into Operation
Press the <On/Off> key on the lower left front side of the instrument.
TTI-22 performs a self-test. If there are no errors, the instrument will enter measuring mode
after the self test.
6.2.1 Getting Started with Pre-stored Sensor Parameters
If sensor parameters have already been entered and assigned to the sensor inputs 1 and 2 ex
factory, TTI-22 displays the current temperature of the sensors.
Fig. 6 - 2 Example for a measurement display
1. Before measuring with TTI-22, check if the displayed sensor numbers "No”
match the numbers on the label positioned on the sensor.
2. Check if the entered and selected sensor parameters match the data on the factory or
UKAS calibration certificate (see Chapter 7.5).
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ISSUE 1 – 08/08
6.2.2 Getting Started without Stored Sensor Parameters
If no sensor parameters have been entered yet, TTI-22 displays no temperature:
Fig. 6 - 3 Display before input and/or selection of sensor parameters
You can either switch to the resistance display (see Chapter 7.6) or enter sensor parameters
and assign these to sensor inputs 1 and 2:
1. Enter the sensor parameters according to the calibration certificate (see
Chapter 7.5).
2. Assign the sensor parameters to the sensor input 1 (CH1) or 2 (CH2) (see
Chapter7.5)
TTI-22 displays the current temperature of the sensor:
Fig. 6 - 4 Display after input and selection of sensor parameters
6.2.3 Switching TTI-22 Off
If you switch off TTI-22 with the <On/Off> key, the current operating condition (e.g. mean
value mode for 20 values) is stored.
If you interrupt the power supply in another way, e.g. by pulling the plug, TTI-22 is
deactivated without storing the current operating condition.
1. To switch off TTI-22, change to measuring mode.
2. Keep the <On/Off> key pressed for 1-2 seconds.
TTI-22 displays the message "Power down" and switches itself off.
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ISSUE 1 – 08/08
7. Configuring TTI-22
After being switched on, TTI-22 is in measuring mode. Press the <M> key to change
to the menu mode.
There are two ways to select a menu item:
• Use the arrow keys to move the cursor to the desired item and press the <> key.
• Enter the digit in front of the menu item.
If the display does not provide enough space for all lines in a menu, the symbol for the arrow
key <> or <> appears on the right-hand side in the headline. You can scroll down the
display with these arrow keys.
To go back to the next higher level, press the <ESC> key.
To change back to the measuring mode, press the <ESC> key in the main menu.
7.1 Setting a Password
TTI-22 has been assigned no password ex factory. We recommend setting a user
password as soon as possible.
The user password restricts the access to the menus Edit Configuration, Change User
Password and LOCK/UNLOCK Device.
To prevent unauthorized access to the menu, change to measuring mode before leaving the
instrument or switch TTI-22 off.
If you have forgotten your user password, contact your Isotech representative.
Setting a user password
Fig. 7 - 1 Setting or changing the user password
Page 16 of 51
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