Datasheet

DATA SHEET
Technical changes reserved
0141 0316-115 07/2009
Thermocouple module
with digital I²C-Interface - THMOD-I²C
DescriptionDescription
Technical data
Thermocouple module THMOD-I²C
Measuring principle
Thermoelectric voltage measu-
rements (Seebeck-Effect)
Signal processing
Digital in ASIC
Measuring range
type -300 -270...+300 °C
type -800 -270…+800 °C
type -1370 -270…+1370 °C
Resolution T1 -300 ca. 0,1 K (Typ J)
T2 -800 ca. 0,2 K (Typ J)
T3 -1370 ca. 0,5 K (Typ J)
Temperature measurement-
connection point
-32…+97 °C, class B
Module response time
< 30 msec.
Dimensions
9 x 46,0 x 5,0 mm
Operating voltage
6…24 V
Current consuption
< 3 mA
Model
SMD-Module
Connection
Pin strip, 6-pin, RM 2.54 mm
I²C-Interface
100 / 400 kHz, Adress 0x78
Article Art.-No.
Thermocouple module type -300 THMOD-I²C-300
Thermocouple module type -800 THMOD-I²C-800
Thermocouple module type -1370 THMOD-I²C-1370
Characteristic features
• Industrial temperature measuring method
• Wide measuring range, -270...+1360 °C
• Digital I²C-interface
• Simple integration to micro-controller
• Scope of supply with thermocouple, Type K
• Calibrated and ready-to-use
• Miniaturised dimensions
• Optimum price performance ratio
• Customer specic product variants and OEM-models possible
Areas of application
• Micro-controller
• Instrumentation
• CONRAD C-Control
• Customer specic products
Features
Thermocouples are very widely used in industry and are considered
as the standard method for measurement of temperatures over a wide
measuring range. For example, with cheap NiCr-Ni thermocouples, a
temperature range of -270...+1360 °C can be realised.
While using a thermocouple in combination with a micro-controller, the
relatively low thermovoltage should be properly amplied. Since ther-
mocouple measures relatively the thermoelectric voltage of the second
pole, additionally absolute temperature measurement is also always
required.
With the help of this thermocouple module, simple method is possible
to realise a temperature measurement over a wide measuring range
with a micro-controller. The module takes care of both the measure-
ment of thermovoltage as well as determination of temperature at the
connection point. A high resolution, 14 Bit A/D-converter is also already
integrated in the ASIC and both measurements are made available at
the I²C-interface.
Therefore, the processing in the micro-controller is limited to simple ap-
plication of a calculation. Since the module is calibrated ex factory over
thermo voltage, no additional calibration is required by the user.
To simplify the product-development, an USB-I²C-Adapter and a PC-
Software is available for the display and data recording – please send
us your enquiry!
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon [phone] | Fax [phone] | [e-mail] | bb-sensors.com
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