Ametek DTI 100 Bedienungsanleitung
User manual
Digital Temperature Indicator
DTI 100/1000
ã
ãã
ãCopyright 2001 AMETEK DENMARK A/S
100975 05 11-06-2001 1/32
Table of contents: Page
1. General information 3
2. Introduction 4
3. Functionality, overview 5
3.1 Functional description 6
3.2 Indicators 7
3.3 Touch pad 7
3.4 Connections 8
4. Labels 9
5. Operation 9
5.1 Operating area 10
5.2.1 Connection of sensors 10
5.2.2 Connections for analog out (DTI 1000 only) 10
5.2.3 Power supply 11
5.3.1 On / Off 12
5.3.2 Reading 13
5.3.3 Reset 13
5.3.4 Units 14
5.3.5 Resolution 15
5.3.6 Checking sensor coefficients 16
5.3.7 Light 16
6. Technical specifications 17
7. Maintenance and display error messages 18
7.1 Maintenance 18
7.2 Changing batteries 18
7.3 Display and error messages 19
8. Software 20
8.1 Installation 20
8.2 Connections 20
8.3 Starting the program 21
8.4 Setup (Analog output) (DTI 1000 only) 21
8.5 Measurements 21
8.6 Sensor coefficients/calibration 24
8.7 Recalibration (Calibration information) 27
8.8 Quit, About, Connection and Temperature unit 27
8.9 Error messages 28
9. Calibration 29
9.1 Recommended equipment 29
9.2 Starting the calibration 29
9.3 Calibration of the reference resistors 30
9.4 Calibration of analog out (DTI 1000 only) 31
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1 General information
This manual is only effective for following products:
DTI model 1000
DTI model 100
DTI software
The products are manufactured by:
AMETEK DENMARK A/S
GYDEVANG 32 - 34
DK-3450 ALLERØD
DENMARK
TEL.: +45 48 16 80 00
FAX: +45 48 16 80 80
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2 Introduction
The DTI (Digital Temperature Indicator) system is designed for fast and traceable calibration
and is ready for use. The system is portable.
Please read this manual carefully before use, to obtain maximum value of your DTI system.
The DTI is prepared for re-calibration by your local calibration laboratories, and all necessary
instructions for the re-calibration is stated in this manual.
The DTI is not designed for continuously data-logging recording, since there is no
guarantee for missed log values during the data-logging.
Definitions and terminology used in this manual:
a. Text inside <> refer to soft-keys on the DTI panel or keys on the PC keyboard.
Text with big letters indicate the activated function if there are more than one function
(example <ON/Off>).
b. Display text on the DTI is shown inside rounded frames.
c. Screen menus in the DTI software are shown inside edged frames.
WARNING:
* Read this manual before use.
* Do not use in hazardous area.
* Do not connect rated voltages to earth with a maximum
above 50V to the input terminals.
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3 Functionality
Overview:
1a. Sensor1 connections.
1b. Sensor 1 connections, DTI 1000 only.
2a. Sensor 2 connections.
2b. Sensor 2 connections, DTI 1000 only.
3. Ground terminal for cable shields.
4. Display with 2 * 20 characters.
5. Softkeys.
6. RS232C connector.
7. Power inlet for mains adapter.
8. Analog out for channel 1, DTI 1000 only.
9. Analog out for channel 2, DTI 1000 only.
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3.1 Functional description
The DTI is used for measuring inputs from two PT100 sensors in the range 0 to 360 Ω(-200
to 750°C). The two sensors are connected to the connectors in the top plate. The input signal
is compared to the two internal resistor references from which the input signal can be
determined.
The DTI operates with a 2*20 character display, which continuously read out the two inputs.
The input value can be shown as the actual read value for both sensors, the peak values for
sensor 1 or 2, the differential value for the two sensors or as the differential peak value for the
two sensors.
The input value can be shown in Ω, °C, °F or K selected by the user.
The resolution in temperature can be 0.1 or 0.01 for both models and also 0.001 for DTI 1000.
The 4th order polynomial coefficients can be inspected by the user and changed in the
software program.
The DTI 1000 also has analog output which corresponds to the temperature value for the
input where the signal range is from -0.5 to 3.75 volt. The gain and offset can be altered by
the user in the software program.Ö
ÖÖ
Ö
The power supply is made by eight 1.5 Volt batteries or a mains adapter (optional extra). Use
only mains adapter supplied by AMETEK in order to comply with the requirements in
EN50081-1 (1992) and EN50082-1 (1992).
It is possible to connect the shields from the cables to the cabinet, in order to reduce the
influence of noise.
Both models are supplied with RS232 and software, in order to have the possibility of saving
the measured data and to recalibrate the DTI or the sensors.
Ö
ÖÖ
ÖNote: If the temperature is outside the range set by gain and offset, the value of the
analog output signal is undefined.
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3.2 Indicators
The DTI only uses the display for all indications. The display has 2*20 characters which will
swap between read-out values or menu selection when requested. Please see section 5.3.1 to
5.3.6 for possible display read-outs. Please note that the error messages will also be showed
in the display, see section 7.3.
3.3 Touch pad
There are 4 soft-keys on the touch pad panel, where 2 of the soft-keys have a double
function.
Switch ON or switch OFF the DTI. Please press down the key at least 0.2
seconds in order to switch on the unit.
MENU toggles between the menus: Mode/Unit/Resolution/Sensor
ENTER enters the menu function selected with the RESET/SELECT key.
RESET resets peak values for both channels.
SELECT toggles between the selected menu functions.
Switch on or switch off the light. The light can be activated for 10 seconds or
constantly.
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3.4 Connections
All signal cables have to be connected to the top plate (grounding on the back plate).
Power and communication cables have to be connected on the back plate.
Top plate connection Back plate connections
Connections for sensors, where channel 1 is shown.
Please note that the LEMO-connector is only available on the DTI-
1000 model.
Connections for analog out (channel 1 and 2) for the 2 temperature
readings and only available on the DTI-1000 model.
Ground terminal for shield on the signal cables.
Power input for mains adapter 9VDC 200mA.
Connector for RS232C interface.
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4 Labels
Sign Meaning Placement
Manufacturer logo Shows name and
address of manufacturer
Front plate foil
Instrument name Unambiguous statement
of the instrument name
Front plate foil
Display foil
Model specification Unambiguous statement
of the instrument model
Front plate foil
Serial number Unambiguous statement
of the instrument
Front plate sticker
CALIBRATION INSTRUMENTS
R
Type: DTI 1000
Volt/Hz: 8 x 15V DC
Serial No.: Xxxxxx-xxxxx
Year: 2000-33
Power:1.8 W
AMETEK DENMARK A/S GYDEVANG 32-34 DK-3450 ALLERØD
TEL. +45 48168000 FAX. +45 48168080 WWW.AMETEK.COM/TCI
Made in Denmark
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