Ametek DTI 1000 User manual

Reference manual
Digital Temperatur Indicator
Jofra DTI-1000 A/B

Reference Manual
Digital Temperature Indicator
JOFRA DTI-1000 A/B
Copyright 2005 AMETEK Denmark A/S

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About this manual….
•The structure of the manual
This reference manual is aimed at users who are familiar with
AMETEK calibrators, as well as those who are not. The manual
is divided into 8 chapters, which describe how to set up,
operate, service and maintain the indicator. The technical
specifications are described as well.
•Safety symbols
This manual contains a number of safety symbols designed to
draw your attention to instructions which must be followed when
using the instrument, as well as any risks involved.
Warning
Conditions and actions which may compromise
the safe use of the instrument and result in
considerable personal injury or material damage.
Caution…
Conditions and actions which may compromise
the safe use of the instrument and result in slight
personal or material damage.
Note…
Special situations which demand the user’s
attention.

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List of contents
1.0 General information................................................... 4
1.1 Warranty..................................................................... 5
2.0 Safety instructions..................................................... 6
3.0 Introduction ................................................................ 8
4.0 Functionality............................................................... 9
4.1 Functional description............................................... 11
4.2 Indicators.................................................................. 12
4.3 Touch pad ................................................................ 12
4.4 Connections.............................................................. 13
5.0 Operation .................................................................. 15
5.1 Operating area ......................................................... 15
5.2 Connection of sensors.............................................. 16
5.2.1 Power supply .............................................. 17
5.2.2 On / Off....................................................... 18
5.2.3 Reset .......................................................... 19
5.2.4 Units ........................................................... 19
5.2.5 Resolution................................................... 21
5.2.6 Checking sensor coefficients ...................... 23
5.2.7 Mode........................................................... 27
6.0 Technical specifications.......................................... 28
7.0 Maintenance and display error messages............ 30
7.1 Maintenance............................................................. 30
7.2 Changing batteries ................................................... 30
7.3 Display and error messages..................................... 31
8.0 Adjusting and calibrating the instrument.............. 32
8.1 Introduction to AmeTrim-ATC/DTI Software ............. 32
8.2 Installing the AmeTrim-ATC/DTI Software................ 33
8.2.1 Connecting the PC and the ATC/DTI.......... 33
8.2.2 Starting the AmeTrim-ATC/DTI
software...................................................... 34
8.2.3 Reference sensor........................................ 36
8.2.4 Default values............................................. 38
8.2.5 RTD input adjustment ................................. 39
8.2.6 Calibration date........................................... 40
8.2.7 Analog output adjustment ........................... 41
8.3 Setup Printer ............................................................ 44

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Congratulations on your new JOFRA DTI-1000!
With the AMETEK indicator, you have chosen an extremely effective
instrument which we hope will live up to all your expectations. Over
the past many years, we have acquired extensive knowledge of
industrial temperature calibration. This expertise is reflected in our
products which are all designed for daily use in an industrial
environment. Please note that we would be very interested in hearing
from you if you have any ideas or suggestions for changes to our
products.
This reference manual applies to the following products:
•DTI-1000 A
•DTI-1000 B
ISO-9001 certified
AMETEK Denmark A/S was ISO-9001 certified in September
1994 by Bureau Veritas Certification Denmark.
CE-label
Your new temperature calibrator bears the CE label
and conforms to the Electromagnetic Compatibility
(EMC) Directive 2014/30/EU and the Low Voltage
Directive 2014/35/EU and RoHS Recast (RoHS II)
Directive 2011/65/EU*.
* DTI-1000 A / DTI-1000 B from serial no. xxxxxx-00541
1.0 General information

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Technical assistance
Please contact the dealer from whom you acquired the instrument if
you require technical assistance.
1.1 Warranty
This instrument is warranted against defects in workmanship,
material and design for two (2) years from date of delivery to the
extent that AMETEK will, at its sole option, repair or replace the
instrument or any part thereof which is defective, provided, however,
that this warranty shall not apply to instruments subjected to
tampering or, abuse, or exposed to highly corrosive conditions.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES
WHETHER EXPRESS OR IMPLIED AND AMETEK HEREBY
DISCLAIMS ALL OTHER WARRANTIES, INCLUDING, WITHOUT
LIMITATION, ANY WARRANTY OF FITNESS FOR A PARTICULAR
PURPOSE OR MERCHANTABILITY. AMETEK SHALL NOT BE
LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES,
INCLUDING, BUT NOT LIMITED TO, ANY ANTICIPATED OR LOST
PROFITS.
This warranty is voidable if the purchaser fails to follow any and all
instructions, warnings or cautions in the instrument’s User Manual.
If a manufacturing defect is found, AMETEK will replace or repair the
instrument or replace any defective part thereof without charge;
however, AMETEK’s obligation hereunder does not include the cost
of transportation, which must be borne by the customer. AMETEK
assumes no responsibility for damage in transit, and any claims for
such damage should be presented to the carrier by the purchaser.

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2.0 Safety instructions
Read this manual carefully before using
the instrument!
Please follow the instructions and procedures
described in this manual. They are designed to allow
you to get the most out of your DTI system and avoid
any personal injuries and/or damage to the instrument.
Disposal – WEEE Directive
These calibrators contain Electrical and Electronic
circuits and must be recycled or disposed of properly
(in accordance with the WEEE Directive 2012/19/EU).
Warning
•The indicator must not be used for any purposes
other than those described in this manual, as it
might cause a hazard.
•The indicator has been designed for indoor use
only and is not to be used in wet locations.
•The indicator is not to be used in hazardous
areas, where vapour or gas leaks, etc. may
constitute a danger of explosion.
•The indicator is not designed for operation in
altitudes above 2000 meters.
•Only use the specified mains adaptor approved for
the voltage and plug configuration in your area.
•Do not connect rated voltages to earth with a
maximum above 30V to the input terminals.
•Always position the indicator to enable easy and
quick disconnection of the power source (mains
adaptor).

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Caution…
When connecting the PC and the indicator please
ensure that both the PC and the indicator are switched
off at the mains. Failure to do so may result in your
equipment being damaged.

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3.0 Introduction
The DTI (Digital Temperature Indicator) system is designed for fast
and traceable calibration. The system is portable.
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 a precision instrument and to achieve the precision, a set
of sensor coefficients relating to the specific sensor must be present
in the DTI. Before use of the DTI, ensure that the correct coefficients
for each channel in the DTI are equal to those from the sensors
calibration certificate – see section 5.2.6.
How to install new sensor coefficients can be found in section 8.2.3.
Note…
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.

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4.0 Functionality
Overview:

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POS Description
1a Sensor 1 connections
1b Sensor 1 connections
2a Sensor 2 connections
2b Sensor 2 connections
3 Ground terminal for cable shields
4 Display with 2 * 20 characters
5 Soft keys
6 RS232 connector
7 Power inlet for mains adapter

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4.1 Functional description
The DTI is used for measuring inputs from two RTD sensors. 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, 0.01 or 0.001.
The sensor coefficients can be inspected by the user and changed in
the software program.
The power supply is made by eight 1.5 Volt batteries or a mains
adapter. 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.
The DTI-1000 is supplied with RS232 and software, in order to have
the possibility of saving the measured data and to recalibrate the DTI
or the sensors.

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4.2 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 5.2.1 to 5.2.7 for
possible display read-outs. Please note that the error messages will
also be showed in the display, see section 7.3.
4.3 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.
Toggles between the following display modes: T1/T2,
Diff(T1-T2), T1MAX./T1MIN., T2 MAX./T2 MIN., DIFF
MAX./DIFF MIN.
R
CALIBRATION INSTRUMENTS
ENTEROFF
ON MENU RESET
SELECT MODE
T1
T2 23.65
23.60
OFF
ON
ENTER
MENU
RESET
SELECT
MODE

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4.4 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 connections
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.
SENSOR 1
+
--
+ +
--
+
SENSOR 1 SENSOR 2
RS 232 9VDC
-
200 mA
2 x 4 PCS BATTERIES TYPE AA

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Ground terminal for shield on the signal cables.
Power input for mains adapter 9VDC 200mA.
Connector for RS232C interface.
RS 232
9VDC
-
200 mA

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5.0 Operation
5.1 Operating area
Both of the DTI models are intended for use in areas which meet the
following:
Temperature range : 0°C to 50°C (32°F to 122°F)
Humidity : 0% to 90%
Protection class : IP20
Warning
•The indicator must not be used for any purposes other
than those described in this manual, as it might cause a
hazard.
•The indicator has been designed for indoor use only
and is not to be used in wet locations.
•The indicator is not to be used in hazardous areas,
where vapour or gas leaks, etc. may constitute a
danger of explosion.

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5.2 Connection of sensors
The sensor should be connected to the terminals as shown in the
figure below:
Use the ground terminal (see the figure "Overview" section 4, pos. 3)
for the cable shields in order to reduce noise.
The connector type to extra connector on DTI-1000 is: LEMO FFA 1S
304 CNAC.

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5.2.1 Power supply
The DTI is supplied with 8 1.5 Volt batteries as standard. When the
battery voltage is low following message will appear:
BATTERY LOW
PRESS ANY KEY
This message will only appear one time after the DTI has been
switched on, and is removed by pressing the key <Menu/Enter> or
<Reset/Select>. The DTI is still able perform accurate measurements
a little while longer.
The batteries are placed in the two battery holders shown in the
figure below:
It is also possible to supply the DTI from a mains adapter at the
connector shown in the figure above. The mains adapter can be
supplied by AMETEK.
RS 232 9VDC
-
200 mA
2 x 4 PCS BATTERIES TYPE AA
Mains adapter

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5.2.2 On / Off
Start the DTI by activating the softkey <ON/Off>. Following message
will be shown in the display:
SELF-CALIBRATION
AND TESTING 1
This information states that the internal references and the sensor
coefficients are checked. If the coefficients are incorrect an error
message will occur which is described in section 7.3.
The next message shown in the display will be:
SELF-CALIBRATION
AND TESTING 2
In this step the A/D converter is calibrated which approximately takes
1 second. When the calibration is over following message will be
shown:
SELF-CALIBRATION
AND TESTING 3
Test 3 is an internal voltage reference check, which approximately
takes 4 seconds.
When all tests have succeeded, the DTI will show the model type and
last calibration date in the display:
Ver. X.XX DTI-1000
CAL. DATE 031216

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After this the input values will be shown in the display in the same
format, as before the DTI was shut off last time:
T1 23.65 °C
T2 23.60 °C
If there is no input signal or it is outside the measuring range a
hyphen will be shown for that specific channel.
5.2.3 Reset
Use the softkey <RESET/Select> in order to reset the peak values in
the selected difference mode.
5.2.4 Units
In order to change the unit of the read-out, you must press the
softkey <MENU/Enter> 1 time. The following message will be shown
in the display:
UNIT: °C