Isotech TTI 7 PLUS Operating instructions

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TTI-7 Iss.02 –06/11
TRUE TEMPERATURE
INDICATOR MODEL TTI 7PLUS
User Maintenance Manual/Handbook
Isothermal Technology Limited, Pine Grove, Southport, PR9 9AG, England
Tel: [phone] Fax: [phone] Internet: www.isotech.co.uk E-mail: [e-mail]
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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CONTENTS
GUARANTEE................................................................................................................................................................ 4
EMC INFORMATION .................................................................................................................................................. 5
ELECTRICAL SAFETY .................................................................................................................................................. 5
Environmental Ratings .......................................................................................................................................... 5
OPERATING INSTRUCTIONS: SOFTWARE VERSION 7.1 ....................................................................................... 6
SUPPLIED ACCESSORIES ........................................................................................................................................ 6
SAFETY ..................................................................................................................................................................... 6
CE MARKING ........................................................................................................................................................... 6
INSTALLATION ....................................................................................................................................................... 6
MAINTENANCE ...................................................................................................................................................... 6
Batteries................................................................................................................................................................ 7
Technical Specification ......................................................................................................................................... 7
UNCERTAINTY OF MEASUREMENT..................................................................................................................... 8
GENERAL ................................................................................................................................................................. 9
FRONT PANEL KEYS............................................................................................................................................... 9
Data Logging....................................................................................................................................................... 14
RTD INPUTS .......................................................................................................................................................... 16
PROBE CONNECTION......................................................................................................................................... 16
THERMOCOUPLE INPUTS................................................................................................................................... 16
CALIBRATION ....................................................................................................................................................... 17
RTD Calibration ................................................................................................................................................. 17
Thermocouple Calibration ................................................................................................................................. 17
RJ Calibration...................................................................................................................................................... 18
Equipment Required........................................................................................................................................... 18
Environment ....................................................................................................................................................... 18
CAL NOTEPAD.......................................................................................................................................................... 19
MINIMUM SYSTEM REQUIREMENTS................................................................................................................... 19
Development ...................................................................................................................................................... 19
License ................................................................................................................................................................ 19
INSTALLING CAL NOTEPAD ............................................................................................................................... 19
STARTING CAL NOTEPAD .................................................................................................................................. 20
Configuring for the TTI 7PLUS ............................................................................................................................. 20
REMOTE CONTROL INTERFACES .......................................................................................................................... 21
INTRODUCTION .................................................................................................................................................. 21
Version History................................................................................................................................................... 21
RS-232 SERIAL INTERFACE ................................................................................................................................... 21
Connection ......................................................................................................................................................... 21
Front Panel Set Up ............................................................................................................................................. 22
Talk Only Mode.................................................................................................................................................. 22
Baud Rate............................................................................................................................................................ 22
Communicating .................................................................................................................................................. 22
PROGRAMMING THE INTERFACE ...................................................................................................................... 23
Introduction ........................................................................................................................................................ 23
Command Tree .................................................................................................................................................. 23
Data Types.......................................................................................................................................................... 24
Output Data Format .......................................................................................................................................... 24
Input Message Terminators................................................................................................................................ 24
Input Buffer......................................................................................................................................................... 25
Measurement Configuration Commands........................................................................................................... 25
Triggering Commands........................................................................................................................................ 27
Routing Commands ............................................................................................................................................ 30
Memory Commands........................................................................................................................................... 30
Datalogger Commands....................................................................................................................................... 31
Mathematical Operation Commands .................................................................................................................. 32
Autozero And Rolling Mean & Standard Deviation Commands ....................................................................... 33
System Related Commands................................................................................................................................ 33
Status Reporting Commands.............................................................................................................................. 35
Questionable Data Registers.............................................................................................................................. 37

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Standard Event Registers.................................................................................................................................... 37
Operation Registers............................................................................................................................................ 38
Status Byte Registers .......................................................................................................................................... 39
RS-232 Interface Commands ............................................................................................................................. 40
Front Panel Operations ...................................................................................................................................... 40
APPENDIX I: COMMAND SUMMARY.................................................................................................................. 41
Programming Language ...................................................................................................................................... 41
Measurement Configuration Commands........................................................................................................... 41
Triggering Commands........................................................................................................................................ 41
Routing Commands ............................................................................................................................................ 42
Memory Commands........................................................................................................................................... 42
Datalogger Commands....................................................................................................................................... 42
Mathematical Operation Commands................................................................................................................. 42
Autozero andp Rolling Mean & Standard Deviation Commands ...................................................................... 42
System Related Commands................................................................................................................................ 42
Status Reporting Commands.............................................................................................................................. 43
RS-232 Interface Commands ............................................................................................................................. 43
APPENDIX II: RS-232 PIN CONNECTIONS ........................................................................................................ 44

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TTI-7 Iss.02 –06/11
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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EMC INFORMATION
This product meets the requirements of the European Directive on Electromagnetic Compatibility (EMC)
89/336/EEC as amended by EC Directive 92/31/EEC and the European Low Voltage Directive 73/25/EEC, amended
by 93/68/EEC. To ensure emission compliance please ensure that any serial communications connecting leads are
fully screened.
The product meets the susceptibility requirements of EN 50082-1, criterion B.
Symbol Identification
Publication
Description
ISO3864
Caution (refer to handbook)
IEC 417
Caution, Hot Surface
ELECTRICAL SAFETY
This equipment must be correctly earthed.
This equipment is a Class 1 Appliance. A protective earth is used to ensure the conductive parts can not become live
in the event of a failure of the insulation.
The protective conductor of the flexible mains cable which is coloured green/yellow MUST be connected to a
suitable earth.
The Blue conductor should be connected to Neutral and the Brown conductor to Live (Line).
Warning: Internal mains voltage hazard. Do not remove the panels.
There are no user serviceable parts inside. Contact your nearest Isotech agent for repair.
Voltage transients on the supply must not exceed 2.5kV.
Conductive pollution, e.g. Carbon dust, must be excluded from the apparatus. EN61010 pollution degree 2.
Environmental Ratings
Operating Temperature 0-50°C
Relative Humidity 5-95%, non condensing

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OPERATING INSTRUCTIONS: SOFTWARE VERSION 7.1
SUPPLIED ACCESSORIES
1 Mains Cord
1 RS 232 Cable
1 Operating Instructions (English)
When unpacked, inspect for physical damage and report any defects immediately in writing, retaining packaging
materials for inspection. Before placing into service, ensure mains voltage is correct. Instruments are normally
supplied for 240Volts 50Hz. Other voltages may also be selected according to the chart in the Maintenance section.
Be sure to also change the fuse to the correct type and rating.
SAFETY
This apparatus is designated Safety class 1 as defined in the IEC publication 1010-1 (Amendment 1).
CE MARKING
This apparatus complies with the CE marking directive, 93/68/EEC, and is in compliance with the following standards:
Generic Emission Standard EN5081-1
Conducted Emissions EN55022 Class B
Radiated Emissions EN55022 Class B
Generic Immunity Standard EN5082-1
Conducted Immunity (Power Lines) prEN60 1000-4-4 1kV
Conducted Immunity (Signal Lines) prEN60 1000-4-4 500V
Radiated Immunity prEN60 1000-4-3 3V/m
Electrostatic Discharge Immunity prEN60 1000-4-2 8kV
Electrical Safety Standard IEC1010-1 (Amend 1)
INSTALLATION
The TTI 7PLUS is designed to be either free bench-standing, or rack-mounted. The TTI 7PLUS is ½19", 2.5U high.
When connected to a mains supply, the mains cord provided with the equipment should be used, and connected only
to a mains supply with a suitable earth connection. Before connection to the mains supply ensure that the correct
voltage is set, and the fuse is of the correct rating.
MAINTENANCE
Normally no maintenance is required other than cleaning with a moist cloth. Avoid aggressive detergents or solvents.
CAUTION: Before any maintenance, repair, or exchange of parts or fuses, the instrument must be disconnected
from the mains supply and all other power sources. In the event of a fault occurring, the instrument should be
returned to our factory, or Agent, for rectification. A mains fuse is fitted to the mains inlet socket on the rear panel,
and should be replaced if necessary. The Instrument should only be serviced/repaired by a competent engineer and
only design approved replacement parts used.

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CAUTION: Disconnect the mains lead and all connecting leads, before removing the fuse holder. Replace only with
the correct fuse type, i.e. according to the following chart.
LINE Range Fuse (250V)
VOLTAGE Vac IEC 127
Selection 47-63Hz 5 x 20 mm
Maximum Input Power: 25VA
Batteries
The thermometers may be used either directly connected to the mains supply or, for portable applications, run from
the internal batteries. Approximately 8 hours continuous operation from a full charge is possible. The battery
charger is built into the instrument and charging commences immediately when the mains supply is connected,
illuminating the LINE LED on the front panel. The batteries used are of the sealed lead acid type; continuous trickle
charging causes no harm to the batteries and we always recommend running from the mains supply when possible,
thus ensuring the batteries are always fully charged and ready for portable applications. The charger will
automatically switch to trickle charge or fast charge mode depending upon the battery state.
LOW BATTERY indication is displayed when the batteries have approximately 10% charge left. When this indication
appears, the thermometers should be connected to a mains supply as soon as convenient, as approximately 50
minutes operating time remains. To extend the battery life, the backlight can be turned off via the OPT menu.
Operating time without backlight is approximately 14 hours.
Technical Specification
DISPLAY: LCD Graphics Panel, 240 x 64 dot, with LED backlight contrast control via front panel
keyboard.
INPUTS: 2 channels for PRTs via 6 pin Lemo sockets. LEMO type number for input plug:
FGG1B.306.CLAD52
IMPUT IMPEDENCE > 10M
Max. input Voltage 40Vdc, 28Vrms
Common Mode Rejection 50Vrms
The inputs are linearised and user selectable to the following standards:-
EN6071=100 Ohm, Ra=3908
USER: Up to 20 probes may be configured to customer entered constant, A B, C, and R0
values. For Industrial PRT (CVD) and ITS 90 coefficients for SPRT
A standby current is always passed through the sensors.
100V 90-110V} 630mA (T)
120V 108-132V}
220V 198-244V} 315mA (T)
240V 216-264V}

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UNCERTAINTY OF MEASUREMENT
The Inputs are linearised for the following thermocouple Types B,E,J,K,L,N,R,S,T,U,Au/Pt and in accordance with the following
Standard, NIST 175, ITS 90. Types C & D to ASTM E988, types L and U to DIN 43710.
Reference Junction compensation may be selected for the following modes:-
Automatic: Internal Reference Junction range 0 to +40C
External: Via Pt100 sensor connected to channel A or B range 0 to +100C
OFF: Turns the Reference Junction OFF = 0C
* Apply to readings above 600C
The above figures apply to values with Reference Junction switched off.
Reference Junction uncertainty when used in automatic mode (INT) is better than 0.1C at + 20C with a deviation
of typically 0.01C/C over the range 0 to 100C.
CALIBRATION: Digital security code protected. Default number set 9252
BATTERIES: 1 x Sealed Lead Acid Battery 6V 2.8AH to power digital circuit and display
1 x Sealed Lead acid Battery 6V 1.2 AH to power analogue circuit
1 x Lithium Battery T068AA for data logging memory
Operating time after full charge 8 hours with backlight, 14 hours without
backlight
WORKING 0…50°C rel. humidity less than 90% non condensing
SENSOR
RANGE °C
RESISTANCE
CURRENT
RESOLUTION °C, °F,
K
UNCERTAINTY @
20°C ±5°C
Pt25
-200 to -100
2.5 to 15
1 mA
0.001
0.02 °C
Pt25
-100 to +500
15 to 75
1 mA
0.001
0.01 °C
Pt25
+500 to +670
75 to 115
1 mA
0.001
0.02 °C
Pt100
-200 to -100
10 to 60
0.5 mA
0.001
0.02 °C
Pt100
-100 to +500
60 to 280
0.5 mA
0.001
0.01 °C
Pt100
+500 to +670
280 to 460
0.5 mA
0.001
0.02 °C
TYPE
RANGE
C
RESOLUTION
C F or K
DISPLAY
RESOLUTION
V
UNCERTAINTY
@ 20C 5C 1 YEAR
UNCERTAINTY
@ 20% 5C 60 Days
TEMPERATURE
COEFFICIENT /C
B
+250 to +1820
0.01
1.0
(0.025% Rdg + 0.006%FS) *
(0.02% Rdg + 0.006% FS) *
7 ppm Rdg + 6 ppm FS
C
0 to +2315
0.01
1.0
(0.075% Rdg + 0.005%FS)
(0.05% Rdg + 0.005% FS)
7 ppm Rdg + 6 ppm FS
D
0 to +2315
0.01
1.0
(0.075% Rdg + 0.005%FS)
(0.05% Rdg + 0.005% FS)
7 ppm Rdg + 6 ppm FS
E
-200 to +1000
0.01
1.0
(0.026% Rdg + 0.004%FS)
(0.01% Rdg + 0.004% FS)
7 ppm Rdg + 6 ppm FS
J
-210 to +1200
0.01
1.0
(0.03% Rdg + 0.005%FS)
(0.008% Rdg + 0.005% FS)
7 ppm Rdg + 6 ppm FS
K
-200 to +1372
0.01
1.0
(0.035% Rdg + 0.006%FS)
(0.01% Rdg + 0.006% FS)
7 ppm Rdg + 6 ppm FS
L
-200 to +500
0.01
1.0
(0.03% Rdg + 0.005%FS)
(0.008% Rdg + 0.005% FS)
7 ppm Rdg + 6 ppm FS
N
-200 to +1300
0.01
1.0
(0.035% Rdg + 0.005%FS)
(0.01% Rdg + 0.005% FS)
7 ppm Rdg + 6 ppm FS
R
-50 to +1768
0.01
1.0
(0.02% Rdg + 0.015%FS)
(0.005% Rdg + 0.015% FS)
7 ppm Rdg + 6 ppm FS
S
-50 to +1768
0.01
1.0
(0.02% Rdg + 0.015%FS)
(0.005% Rdg + 0.015% FS)
7 ppm Rdg + 6 ppm FS
T
-200 to + 400
0.01
1.0
(0.025% Rdg + 0.015%FS)
(0.005% Rdg + 0.015% FS)
7 ppm Rdg + 6 ppm FS
U
-200 to +600
0.01
1.0
(0.025% Rdg + 0.015%FS)
(0.005% Rdg + 0.015% FS)
7 ppm Rdg + 6 ppm FS
Au/Pt
0 to +1000
0.01
1.0
(0.02% Rdg + 0.015%FS)
(0.005% Rdg + 0.015% FS)
7 ppm Rdg + 6 ppm FS

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TEMPERATURE:
STORAGE -20…+55°C
TEMPERATURE:
MAINS SUPPLY: 100/120/220/240 Volts +10% -13%
47…63Hz. 80VA
DATA LOGGING: Up to 4000 single channel values may be stored with date and time.
MATHS: Computes Max/Min values, Mean values, peak to Peak values, and standard deviation. Values
all computed from values stored in log.
GENERAL
The TTI 7PLUS comes ready for immediate use, with rechargeable batteries and built-in charger.
The instruments are switched on and off using the left hand buttons, marked appropriately. Connecting the mains
cord automatically enables the battery charging circuit and charges the batteries at the required rate. The LED
marked "LINE" will illuminate to show that mains power has been connected to the thermometer, and the LED
marked "FAST" will light when the batteries are low and the charger is charging at a high rate. The charger will
automatically reduce the charging current to a trickle charge as the batteries reach approximately 80% of full
capacity. Continuous trickle charging will not affect the batteries, and we recommend that the TTI 7PLUS is used with
the mains supply connected whenever possible.
To measure temperature, a suitable probe should be connected to input A or B. The measured temperature will be
displayed in large units and the actual resistance or voltage measured will be displayed in smaller units below,
together with the measuring current mode selected. In addition, the probe configuration and channel details will be
displayed along the top of the display.
FRONT PANEL KEYS

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DISPLAY CONTRAST: To change this display contrast, press and hold down either the ↑or ↓key; the contrast
will vary and may be selected for optimum viewing. The contrast and the viewing angle are changeable, and it may
be desirable to alter the contrast from time to time as your reading position alters.
Aselects channel A to the display
B Selects channel B to the display
A-B Displays the difference between probe A and probe B
in this case the millivolt/resistance reading will not be shown.
SENS The following sensors may be configured.
Select SENS
To configure for thermocouples select T/C and the following screen will be displayed
Select from one of the thermocouple options and press OK the next screen will help you configure the reference
junction
From this screen you can choose from 3 Reference junction modes: Offswitches the RJ Off. Int selects the internal RJ
and automatically compensates displaying the true temperature. Ext switches to the external RJ mode, and a PRT
should be connected to the RTD input of the channel being configured; this Prt can then be used to accurately
measure the reference junction temperature. When selecting the Ext option a choice of Prt types is available.