Ametek JOFRA DTI050 A User manual

Reference Manual
Digital Temperature Indicator
JOFRA DTI050 A/B
Copyright 2006 AMETEK Calibration Instruments

2 31-08-2006 125821 00
About this manual….
• The structure of the manual
This reference manual is aimed at users who are familiar with
AMETEK indicators, as well as those who are not. The manual
is divided into 10 chapters, which describe how to set up,
operate, service and maintain the indicator. The technical
specifications are described and accessories may be ordered
from the list of accessories.
• Safety symbols
This manual contains a number of safety symbols designed to
draw your attention to instructions, which must be followed
when using the indicator, as well as any risks involved.
Warning
Events, which may compromise the safe use of
the indicator and result in considerable personal
or material damage.
Caution…
Events, which may compromise the safe use of
the indicator 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 Introduction ..............................................................................5
2.0 Safety instructions ...................................................................7
3.0 Receiving the DTI050 .............................................................10
3.1 DTI050 interface ......................................................................... 12
3.2 DTI050 display ............................................................................ 14
3.2.1 Configuration modes ...................................................... 15
3.2.1.1 Setting DTI050 configurations ........................ 15
3.2.1.2 Viewing the transducer electronic datasheet
(TEDS) ............................................................ 17
4.0 Measuring temperature..........................................................20
4.1 Measuring temperature with non-intelligent sensors................. 20
4.2 Measuring temperature with intelligent sensors ........................ 22
4.3 Measuring Ohms......................................................................... 22
4.4 Measuring mV............................................................................. 22
5.0 Remote operation...................................................................23
5.1 Remote interface......................................................................... 23
5.2 Setting up the RS232 port for remote control ............................. 23
5.3 Changing between remote and local operation ......................... 24
5.4 Using commands ........................................................................ 25
5.4.1 Command types ............................................................. 25
5.4.2 Character processing ..................................................... 26
5.4.3 Response data types...................................................... 26
5.4.4 Indicator status ............................................................... 27
5.5 Remote commands and error codes .......................................... 27
5.6 Entering commands.................................................................... 30
5.6.1 Common commands ...................................................... 30
5.6.2 DTI050 commands ......................................................... 31
6.0 Programming intelligent sensors .........................................35
7.0 Adjustment procedure ...........................................................36
Pin numbering............................................................................. 36
7.1 Setting up the RS232 port for remote control ............................. 37
7.2 Adjustment .................................................................................. 38
7.2.1 Equipment ...................................................................... 38
7.2.2 Adjustment procedure .................................................... 38
7.2.2.1 Setting up for adjustment................................ 38
7.2.2.2 Adjustment 0-78 mV range ............................. 38

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7.2.2.3 Adjustment 400 ohm range............................. 39
7.2.2.4 Adjustment 4000 ohm range........................... 39
7.2.2.5 Adjustment CJC ohm range............................ 40
7.2.2.6 Adjustment 500000 ohm range....................... 40
8.0 Maintenance............................................................................41
8.1 Replacing batteries ..................................................................... 41
8.2 Cleaning the indicator ................................................................. 41
8.3 Service center calibration or repair ............................................. 42
9.0 General specifications ...........................................................44
10.0 List of accessories ................................................................51

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1.0 Introduction
Congratulations on your new AMETEK JOFRA
Digital Temperature Indicator!
With the AMETEK Jofra indicator, you have chosen an extremely
effective reference instrument, which we hope will perform according
to your expectations. During the past several 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 indicator:
• Jofra DTI050
)ISO-9001 certified
Ametek Denmark A/S was ISO-9001
certified in September 1994 by BVQI -
Bureau Veritas Quality International.

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)CE-label
Your new indicator is CE labelled and
complies with the EMC directive.
)Technical assistance
Please contact the dealer from whom you acquired the indicator
if you require technical assistance.
)Warranty
According to current terms of sale and delivery.
This warranty only covers defects in material and manufacture
and becomes void if the indicator has been subject to
unauthorised service/repair and/or misuse.
)Contacting AMETEK
US, Canada, Latin America : AMETEK TCI at 1-800-527-9999
Europe, Africa, Middle East : AMETEK Denmark A/S at
+ 45 4816 8000
Asia : AMETEK Singapore Pte. Ltd. at
+ 65 (64) 842 388
The product is manufactured by:
AMETEK DENMARK A/S
GYDEVANG 32 - 34
DK-3450 ALLERØD
DENMARK
TEL.: [phone]
FAX: [phone]

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2.0 Safety instructions
Read this manual carefully before using
the indicator!
Please follow the instructions and procedures described in
this manual. They are aimed at allowing you to make the
best of your DTI-system and avoid any personal injuries
and/or damage to the indicator.
Disposal – WEEE Directive
The indicator contains electrical and electronic circuits and
must be properly recycled or disposed of (in accordance
with the WEEE Directive 2002/96/EC).
Warning
The indicator has been designed to calibrate and measure
low voltage signals. To ensure the safety of the operator
and the indicator, DO NOT connect the indicator to input
voltages above 30 Volts.
To avoid possible electric shock or personal injury:
• The indicator must not be used for any purposes other
than those described in this manual.
• Do not operate the indicator in environments of
explosive gas, vapour, or dust.
• Do not apply more than the rated voltage. See
specifications for supported ranges.
• Select the proper function and range for your
measurement.
• Do not use the indicator if it operates abnormally.
Protection may be impaired. When in doubt, get the
indicator serviced.

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• During set-up, make sure that there is correlation
between the software set-up, and the actual sensors
connected to the DTI050.
• When servicing the indicator, only use specified
replacement parts.
• Do not use the indicator if it is damaged. Before you
use the indicator, inspect the case. Look for cracks or
missing plastic.
• Make sure the battery cover is closed before you
operate the indicator.
• To avoid false readings, which could lead to possible
personal injury, replace the battery as soon as the
battery indicator appears.
• To avoid personal injury or damage to the indicator,
use only the specified replacement parts. Do not allow
water into the case.

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Caution…
To avoid possible damage to the indicator or to the
equipment under test:
• Disconnect the power and discharge all high-voltage
capacitors before testing resistance.
• Use the proper jacks, connectors, function and range
for your measurement.
• To avoid damaging the plastic display and case, do not
use solvents or abrasive cleansers when cleaning the
indicator.
Note…
The product liability only applies if the indicator is subject
to a manufacturing defect. This liability becomes void if the
user fails to follow the maintenance instructions described
in this manual or uses unauthorised spare parts.

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3.0 Receiving the DTI050
When you receive the indicator…
• Unpack and check the indicator and the accessories carefully.
• Check the parts according to the list shown below.
If any of the parts are missing or damaged, please contact the
dealer who sold you the indicator.
You should receive:
• 1 DTI050
• 1 traceable certificate
• 1 reference manual
• 1 soft case and shoulder strap
• 1 RS 232 serial cable
• 1 9V battery
• 1 CD-ROM containing the software package
“JOFRACAL”.
RTD P100(90)385
TM
UNITS
FUNC TYPE
HOLD MAX/MIN
CONFIG ENTER
NEXT
+
-

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• 1 CD-ROM containing the configuration software
package “CON050”.
When reordering, please specify the part numbers according
to the list of accessories, section. 10.0

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3.1 DTI050 interface
Figure 1 shows the location of the indicator features and the table
describes their use.
Fig. 1
Pos. Name Description
cTemperature
Sensor Connector
This connector is used for connecting
temperature sensors to the DTI050.
dSerial Interface This is used to interface to a computer or
other devices.
ePower inlet This is the connection for the mains
adapter.
fKeypad Used to control the DTI050.
gDisplay Used to display temperature readings
and other information.
RTD P100(90)385
4
1
5
2
3
TM
UNITS
FUNC TYPE
HOLD MAX/MIN
CONFIG ENTER
NEXT

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Figure 2 shows the location of the keys, while the table describes the
function of each key.
Fig. 2
Pos. Name Description
cON/OFF Key This key is used to turn the indicator on
and off.
dUNITS Key This key is used to change temperature
units. This key has a secondary function
as a (up arrow) when setting
configurations.
eFUNC Key This key is used to change functions
from TC to mV etc. This key has a
second function (CONFIG) used to set
DTI050 configurations and verify sensor
settings.
fTYPE Key This key is for non-intelligent sensors to
change the TC type or RTD type. This
key has a secondary function as the
(ENTER) key when setting
configurations.
gHOLD Key This key is used to freeze the reading of
the display. The key has a secondary
function as the (NEXT) key when setting
configurations.
12
TM
UNITS
FUNC TYPE
HOLD MAX/MIN
CONFIG ENTER
NEXT
3
5
4
6

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hMAX/MIN Key This key is used to display the minimum
and maximum value since the function
was entered or the min/max register was
reset. Hold this key for 3 seconds to
reset the min/max register. This key has
a secondary function as a (down arrow)
key when setting configurations.
3.2 DTI050 display
The main display consists of the following elements depicted below:
Fig. 3
Pos. Name Description
cPrimary
Parameters
Indicates the type of sensor being
measured.
dUnits Indicates the unit of measure for the
display.
eType Indicates the TC, RTD or Thermistor type
being measured (non-intelligent
sensors).
fDisplay Status Indicates the status of the display if it is
not live, eg. HOLD, MIN, MAX etc.
13
5
RTD P100(90)385
S/N FIELD
HOLD
4
2

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gSensor Serial
Number
This displays the serial number for
intelligent sensors when they are
connected and recognized.
3.2.1 Configuration modes
To enter configuration mode, hold the FUNC (CONFIG) key for 3
seconds. Use the arrow keys to make selections and the
NEXT/HOLD key to proceed to the next configuration display.
3.2.1.1 Setting DTI050 configurations
Setting auto shutdown
Use the arrow keys to set the auto shutdown from 1 to 30 minutes.
Fig. 4
To turn the auto shutdown off, repeatedly press the down arrow until
the display looks as depicted below.
Fig. 5
MIN
AUTO SHUTDOWN ON
MIN
AUTO SHUTDOWN OFF

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Setting resolution
Use the arrow keys to adjust the resolution used for temperature
readings. When you press the up arrow, the number of zeros to the
right of the decimal point will increase to a maximum of three.
Fig. 6
Setting display contrast
Use the arrow keys to set the display to the desired contrast.
Fig. 7
SET RESOLUTION
SET CONTRAST

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Setting CJC state
Use the arrow keys to turn cold junction compensation on or off in
thermocouple mode.
Fig. 8
3.2.1.2 Viewing the transducer electronic datasheet (TEDS)
The TEDS for a connected sensor can be viewed in a series of
screens within the configuration mode. Some data is common to all
sensors (General TEDS). Other data is specific to the type of sensor
connected. The General TEDS includes the following data:
• Manufacturer ID
• Model number
• Version
• Serial number
• Template
Each of the 3 sensor types (TC, RTD, and Thermistor) have there
own TEDS format. Relevant data for each format is displayed with
units when practical.
CJC ON

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TC
Displayed Description Units
MIN TEMP Minimum temperature °C
MAX TEMP Maximum temperature °C
MIN. OUTPUT Minimum electrical output V
MAX. OUTPUT Maximum electrical output V
MAP METHOD Mapping method -
TC TYPE Thermocouple type -
BUILD IN Build in RTD for CJC -
R0 Resistance R0 Ω
A CVD coefficient A 1/C (not displayed)
B CVD coefficient B 1/C2(not displayed)
C CVD coefficient C 1/C3(not displayed)
A TC Correction coefficient A V(not displayed)
B TC Correction coefficient B -
C TC Correction coefficient C 1/V(not displayed)
TC RES Thermocouple resistance Ω
RESP TIME Sensor response time S
CAL DATE Calibration date -
CAL INITIALS Calibration initials -
CAL PERIOD Calibration period days
MLID Measurement location ID -
RTD
Displayed Description Units
MIN TEMP Minimum temperature °C
MAX TEMP Maximum temperature °C
MIN. OUTPUT Minimum electrical output Ω
MAX. OUTPUT Maximum electrical output Ω
MAP METHOD Mapping method -
R0 Resistance R0 Ω
A CVD coefficient A 1/C(not displayed)
B CVD coefficient B 1/C2(not displayed)
C CVD coefficient C 1/C3(not displayed)
RTPW Resistance RTPW Ω
AL ITS-90 coefficient A(LR) -
BL ITS-90 coefficient B(LR) -
C1L ITS-90 coefficient C(LR)/C1(LR) -
C2L ITS-90 coefficient C2(LR) -
C3L ITS-90 coefficient C3(LR) -
C4L ITS-90 coefficient C4(LR) -
C5L ITS-90 coefficient C5(LR) -
AH ITS-90 coefficient A(HR) -
BH ITS-90 coefficient B(HR) -
CH ITS-90 coefficient C(HR) -
DH ITS-90 coefficient D(HR) -
WH ITS-90 coefficient W(933.473)
RESP TIME Sensor response time S
EXI NOM Excitation current, nom A
EXI MAX Excitation current, max A
SELF HEAT Self-heating constant W/°C (not displayed)

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RTD, cont.
Displayed Description Units
CAL DATE Calibration date -
CAL INITIALS Calibration initials -
CAL PERIOD Calibration period days
MLID Measurement location ID -
Thermistors
Displayed Description Units
MIN TEMP Minimum temperature °C
MAX TEMP Maximum temperature °C
MIN. OUTPUT Minimum electrical output Ω
MAX. OUTPUT Maximum electrical output Ω
MAP METHOD Mapping method -
R0 Resistance R0 Ω
A Steinhart-Hart coefficient A 1/C(not displayed)
B Steinhart-Hart coefficient B 1/C(not displayed)
C Steinhart-Hart coefficient C 1/C(not displayed)
RESP TIME Sensor response time S
EXI NOM Excitation current, nom A
EXI MAX Excitation current, max A
SELF HEAT Self-heating constant W/°C(not displayed)
CAL DATE Calibration date -
CAL INITIALS Calibration initials -
CAL PERIOD Calibration period days
MLID Measurement location ID -

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4.0 Measuring temperature
4.1 Measuring temperature with non-intelligent
sensors
The DTI050 supports measuring temperature with non-intelligent TC,
RTD and Thermistor sensors. Table 1 lists the available
thermocouple types while table 2 lists the available RTD types.
Table 1; Built in TC curves
TC_type
B
C
E
J
K
L
N
R
S
T
U
BP
XK