Isotech TTI-22 User manual

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TTI-22 Iss.04–11/15
TRUE TEMPERATURE
INDICATOR
MODEL TTI-22
User Maintenance Manual/Handbook
Isothermal Technology Limited, Pine Grove, Southport, PR9 9AG, England
Tel: [phone] Fax: [phone] Internet: www.isotech.co.uk E-mail: [email protected]
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.

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TTI-22 Iss.04–11/15
CONTENTS
PGUARANTEE ................................................................................................................................................................................... 4
1. ABOUT THE INSTRUCTION MANUAL................................................................................................................................. 5
2. SAFETY INSTRUCTIONS......................................................................................................................................................... 5
2.1 GENERAL SAFETY INSTRUCTIONS............................................................................................................................................. 5
2.1.1 Liability ........................................................................................................................................................................ 5
2.1.2 Installation and Use ..................................................................................................................................................... 5
2.1.3 Maintenance and Service ............................................................................................................................................. 6
2.1.4 Disposal ....................................................................................................................................................................... 6
2.2 SPECIAL SAFETY INSTRUCTIONS ............................................................................................................................................... 6
2.3 SAFETY SYMBOLS ON THE INSTRUMENT ................................................................................................................................... 7
3. TTI-22 - AN OVERVIEW .......................................................................................................................................................... 8
4. CHECKING THE SUPPLIED PARTS ........................................................................................................................................ 9
5. OPERATING ELEMENTS AND INSTRUMENT CONNECTIONS....................................................................................... 10
5.1 TTI-22 FRONT SIDE.............................................................................................................................................................. 10
5.1.1 Display and Function Keys ......................................................................................................................................... 10
5.1.2 Instrument Connections on Front Side ..................................................................................................................... 11
5.2 TTI-22 REAR SIDE................................................................................................................................................................. 12
5.2.1 Terminal Assignment of RS232 ................................................................................................................................. 12
5.2.2 Ethernet Terminal ..................................................................................................................................................... 12
5.2.3 External Power Adapter ........................................................................................................................................... 12
5.2.4 Battery Supply ........................................................................................................................................................... 13
6. PUTTING TTI-22 INTO OPERATION .................................................................................................................................. 14
6.1 ASSEMBLING THE MEASURING SYSTEM.................................................................................................................................... 14
6.2 PUTTING THE MEASURING SYSTEM INTO OPERATION............................................................................................................. 15
6.2.1 Getting Started with Pre-stored Sensor Parameters ................................................................................................ 15
6.2.2 Getting Started without Stored Sensor Parameters .................................................................................................. 16
6.2.3 Switching TTI-22 Off ................................................................................................................................................. 16
7. CONFIGURING TTI-22.......................................................................................................................................................... 17
7.1 SETTING A PASSWORD........................................................................................................................................................... 17
7.2 SETTING DATE AND TIME...................................................................................................................................................... 18
7.3 SETTING THE TEMPERATURE UNIT......................................................................................................................................... 18
7.4 SETTING BACKLIGHT AND CONTRAST.................................................................................................................................... 19
7.5 ENTERING SENSOR PARAMETERS AND ASSIGNING TO A SENSOR INLET..................................................................................... 19
7.5.1 Entering or Changing Calibration Parameters for a Sensor ...................................................................................... 19
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...................................................................................................................................................... 22
7.7 PERFORMING A SELF-HEATING TEST....................................................................................................................................... 24
8. READING OUT MEASURING DATA .................................................................................................................................... 25
8.1 TRANSFERRING MEASURING DATA VIA RS232......................................................................................................................... 25
8.2 TRANSFERRING MEASURING DATA VIA ETHERNET................................................................................................................... 28
9. CALIBRATING AND ADJUSTING TTI-22 ............................................................................................................................. 29
10 LOCKING CALIBRATION PARAMETERS ............................................................................................................................. 30
11. OVERVIEW OF THE MENU STRUCTURE....................................................................................................................... 31
11.1 MAIN MENU .................................................................................................................................................................... 31
11.2 SEL.DISPLAY &START (DISPLAY TYPE SELECTION)............................................................................................................ 32
11.3 EDIT CONFIGURATION..................................................................................................................................................... 32
APPENDIX A: TECHNICAL DATA ................................................................................................................................................. 34
A.1 TTI-22 AS HIGH-PRECISION RESISTANCE METER................................................................................................................ 34

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A.2 TTI-22 AS HIGH-PRECISION THERMOMETER (SPECIFICATIONS WITHOUT SENSOR).............................................................. 34
A.3 GENERAL INSTRUMENT DATA........................................................................................................................................... 35
APPENDIX B: DECLARATION OF CONFORMITY....................................................................................................................... 36
APPENDIX C: TROUBLESHOOTING ............................................................................................................................................ 37
C.1 TTI-22 ERROR MESSAGES ................................................................................................................................................. 37
C.2 PC ERROR MESSAGES ....................................................................................................................................................... 38
C.3 PROBLEMS WITH INSTRUMENT ACTIVATION ...................................................................................................................... 39
APPENDIX D: TEMPERATURE CALCULATION METHODS ....................................................................................................... 40
D.1 DIN IEC 751: INDUSTRIAL PLATINUM RESISTANCE THERMOMETERS AND PLATINUM MEASURING RESISTORS ...................... 40
D.2 INTERNATIONAL TEMPERATURE SCALE 1990 (ITS-90) ....................................................................................................... 41
APPENDIX E: CALIBRATING AND ADJUSTING TTI-22 .............................................................................................................. 43
E.1 CALIBRATING AND ADJUSTING TTI-22.............................................................................................................................. 43
E.2 CALIBRATING AND ADJUSTING THE SENSOR ...................................................................................................................... 46
APPENDIX F: CONVERTING THE TEMPERATURE UNIT........................................................................................................... 47
APPENDIX G: FIRMWARE VERSIONS............................................................................................................................................ 48
DECLARATION OF CONFORMITY............................................................................................................................................... 49

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GUARANTEE
This instrument has been manufactured to exacting standards and is guaranteed for twelve months against electrical
break-down or mechanical failure caused through defective material or workmanship, provided the failure is not the
result of misuse. In the event of failure covered by this guarantee, the instrument must be returned, carriage paid, to
the supplier for examination and will be replaced or repaired at our option.
FRAGILE CERAMIC AND/OR GLASS PARTS ARE NOT COVERED BY THIS GUARANTEE
INTERFERENCE WITH OR FAILURE TO PROPERLY MAINTAIN THIS INSTRUMENT MAY INVALIDATE THIS
GUARANTEE
RECOMMENDATION
The life of your ISOTECH Instrument will be prolonged if regular maintenance and cleaning to remove general dust
and debris is carried out.
We recommend that this instrument to be re-calibrated annually.
ISOTHERMAL TECHNOLOGY LTD.
PINE GROVE, SOUTHPORT
PR9 9AG, ENGLAND
TEL: [phone]/544611
FAX: [phone]
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.

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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.
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.

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•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.
•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.

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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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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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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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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 menu level
•In an active input field: To abort the input. The input is
cancelled and the prior field content is restored
•To toggle between menu items or input fields within one menu
•In statistics menus: To change the amount of measuring values
applied for calculating the mean value and the standard
deviation
M (menu)
To change from measurement mode to menu mode
Backlight On/Off
EXP
To enter the exponent of a number
(ENTER)
To confirm the input
<On/Off> key

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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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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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5.2.4 Battery Supply
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.
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.

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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.
•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.
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.
Fig. 6 - 1 TTI-22 with connected sensors

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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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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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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
1. Choose the menu 3 Change User Password.
2. Enter the old user password ("Old Password").
When setting a password for the first time, enter "0000" in this line and confirm with<>.
3. Enter a new user password ("New Password").
4. To save the new password, press the <> key and select the answer "1 YES" to the question "Save
changes?".

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7.2 Setting Date and Time
The date and time are set in order to check the validity of a calibration.
•Date format: "DD.MM.YYYY" (Day.Month.Year)
•Time format: "HH.MM.SS" (Hour, Minute, Second)
1. To set the date and time, press the <M> key and switch to menu 2 Edit Configuration > 1 Clock.
2. Press the <> key in order to enter the date and time via the numerical keys.
3. To change from day to month to year or to change from hour to minute to second, press the <>
key.
4. To exit the menu, press <ESC> and answer the question "Save changes?" with "1 YES".
7.3 Setting the Temperature Unit
To select the temperature display unit, switch to menu 2 Edit Configuration > 6 Units & Backlight and set
[°C], [K] or [°F].
Fig. 7 - 2 Temperature unit

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7.4 Setting Backlight and Contrast
1. To set the backlight, switch to menu 2 Edit Configuration > 6 Units & Backlight > 2 Backlight.
Fig. 7 - 3 Setting backlight and contrast
In this menu you can set the backlight to be automatically activated (ON) or deactivated (OFF)
whenever TTI-22 is switched on.
During operation you can use the "Lamp" key to activate or deactivate the backlight at will.
2. To set the contrast, select the menu item 3 Contrast and press <>. Each press of the key changes
the contrast level by 1 step.
7.5 Entering Sensor Parameters and Assigning to a Sensor Inlet
TTI-22 measures the electrical resistance of the connected platinum sensors and uses it to calculate the
temperature via internal formulas (standard case: quadratic equation).
These formulas’ coefficients, which are different for each sensor, are called sensor parameters (or
calibration parameters). Find these parameters in your calibration certificate.
Calibration parameters for up to 30 sensors can be stored in TTI-22.
Caution:
When performing a precise temperature measurement, only use calibrated sensors.
7.5.1 Entering or Changing Calibration Parameters for a Sensor
For each sensor you connect to the instrument you have to enter the calibration parameters according to
the calibration certificate in order to measure temperatures.
Fig. 7 –4 Entering, deleting and assigning calibration parameters
Caution:
Make sure that you are using the correct calibration parameters for your sensors, since incorrect
calibration parameters lead to erroneous results.

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1. Before entering the calibration parameters, make sure that the date stored in TTI-22 is correct (see
Chapter 7.2).
The date is stored together with the calibration parameters.
2. Switch to the menu mode and select the menu 2 Edit Configuration.
3. Enter the user password and then select the menu item 3 Sensors > 1 New/Edit Calibr.
The calibration parameters of up to 30 sensors can be entered. Initially all 30 lines display "---------
Free".
In the example in Fig. 7 - 5 calibration parameters for several sensors have already been entered, with
the sensor numbered "000001" having been assigned to channel 1 and the sensor numbered "125607"
assigned to channel 2.
Fig. 7 - 5 Display of menu item
4. Select the first line displaying "--------- Free" with the <> key.
5. Select the temperature calculation method and/or the temperature range (see Appendix D).
If the norm is not specified on the calibration certificate, you can use the calibration parameters on
the calibration certificate for differentiation. With DIN IEC 751 the parameter R0 is always used,
whereas with ITS-90 the parameter R(0.01 °C) is specified.
•For industry sensors, e.g. the sensors described in Appendix G, select DIN IEC 751.
•For standard thermometers select one of the 11 ranges of ITS-90.
6. Enter the calibration number Cal.No. written on the sensor and in the calibration certificate.
7. Enter a calibration time Cal.Time according to your experience and/or accuracy requirements.
Caution:
The calibration time mainly depends on the thermal stress on the platinum thermometer. This
calibration time can only be estimated and is decided by the user. Therefore check your sensor
including TTI-22 regularly (independent of the calibration time) and after major thermal stress at
the triple point or freezing point of water. We recommend a yearly recalibration.
At the end of the calibration time the message "SENSOR CAL TIME" is displayed next to the
channel in question. No temperature is displayed.
The overtime exceeding the validity limit of the calibration is displayed in the menu New/Edit
Calibr. (e.g. "-14" means that the calibration has been invalid for 14 days).