Reference Manual
Temperature Calibrator
JOFRA ITC-155/320/650 A
Copyright 2002 AMETEK DENMARK A/S
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 10 chapters which describe how to set up, operate,
service and maintain the calibrator. The technical specifications
are described and accessories may be ordered from the list of
accessories.
Along with the calibrator, you should have received a multilingual user manual which sets out the operating instructions for
the instrument. It is designed to provide a quick reference guide
for use in the field.
• 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
Events which may compromise the safe use of
the instrument and result in considerable
personal or material damage.
Caution…
Events which may compromise the safe use of
the instrument and result in slight personal or
material damage.
Note…
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Special situations which demand the user’s
attention.
List of contents
Introduction ..............................................................................4
1.0
2.0 Safety instructions ...................................................................6
3.0 Setting up the calibrator ........................................................11
3.1 Receipt of the calibrator.............................................................. 11
3.2 Preparing the calibrator .............................................................. 13
3.3 Choice of insertion tube .............................................................. 14
3.4 Inserting the sensor .................................................................... 16
4.0 Operating the calibrator.........................................................19
4.1 Keyboard, display and connections............................................ 19
4.2 Starting the calibrator.................................................................. 22
4.3 Selecting the set-temperature .................................................... 22
4.4 Using the SWITCH TEST ........................................................... 24
4.5 Using the AUTO STEP ............................................................... 28
4.6 Using the MENU ......................................................................... 31
4.6.1 Adjusting the temperature unit ....................................... 32
4.6.2 Adjusting the max-temperature ...................................... 33
4.6.3 Adjusting the SWITCH TEST slope rate ........................ 33
4.6.4 Adjusting the extra stability time..................................... 34
4.6.5 Adjusting the temperature resolution ............................. 34
4.7 Simulation/training ...................................................................... 35
5.0 Storing and transporting the calibrator ...............................36
6.0 Errors.......................................................................................38
7.0 Setting the main voltage and replacing the fuses..............40
7.1 Returning the calibrator for service............................................. 41
8.0 Maintenance............................................................................43
8.1 Cleaning...................................................................................... 43
8.2 Adjusting and calibrating the instrument..................................... 44
8.2.1 Adjusting the calibration date ......................................... 46
8.2.2 Calibrating/adjusting the instrument............................... 47
9.0 Technical specifications........................................................51
10.0 List of accessories.................................................................59
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1.0 Introduction
Congratulations on your new Ametek Jofra ITC
Calibrator!
With the Ametek Jofra calibrator, 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 instruments:
• Jofra ITC-155 A
• Jofra ITC-320 A
• Jofra ITC-650 A
ISO-9001 certified
)
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Ametek Denmark A/S was awarded the
ISO-9001 certificate in September 1994 by
BVQI - Bureau Veritas Quality International.
) CE-label
Your new calibrator bears the CE label and
conforms to the EMC directive and the Lowvoltage Directive.
) Technical assistance
Please contact the dealer from whom you acquired the instrument
if you require technical assistance.
) Guarantee
According to current terms of sale and delivery.
This guarantee only covers defects in manufacture and becomes
void if the instrument has been subject to unauthorised
intervention and/or misuse.
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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 calibrator and
avoid any personal injuries and/or damage to the
instrument.
Warning……
About the use:
• The calibrator must not be used for any purposes
other than those described in this manual.
• The calibrator is designed for interior use only and
should not be used in risk-prone areas, where
vapour or gas leaks, etc. may constitute an
explosives hazard.
• The calibrator must be kept clear within an area of
20 cm on all sides and 1 metre above the calibrator.
• Never use heat transfer fluids such as silicone, oil,
paste, etc.
These fluids may penetrate the calibrator and cause
damage or create poisonous fumes.
• The calibrator must be switched off before any
attempt to service the instrument is made.
• When cleaning the well, REMEMBER, wear goggles
when using compressed air!
About the frontpanel:
• The switch-test connectors, on the front panel of the
calibrator, must NEVER be connected to a voltage
source.
• Thermostats must not be connected to any other
voltage source during a test.
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About insertion tubes and insulation plugs:
• Never leave hot insertion tubes which have been
removed from the calibrator unsupervised – they
may constitute a fire hazard.
If you intend to store the calibrator in the optional
aluminium carrying case after use, you must ensure
that the instrument has cooled to a temperature
below 100°C/212°F before placing it in the carrying
case.
About the fuses:
• The fuse box must not be removed from the power
control switch until the mains cable has been
disconnected.
• The two main fuses must be identical and correspond
to the chosen voltage.
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Caution – Hot surface
This symbol is engraved in the grid plate.
• Do not touch the grid plate, the well or the insertion
tube as the calibrator is heating up – they may be
very hot.
• Do not touch the tip of the sensor when it is
removed from the insertion tube/well – it may be very
hot.
• Do not touch the handle of the calibrator during use
– it may be very hot.
• Over 100°C/212°F
If the calibrator has been heated up to temperatures
above 100°C/212°F, you must wait until the
instrument reaches a temperature below
100°C/212°F before you switch it off.
Below 0°C/32°F (applies only to the ITC-155 A
model)
If the calibrator has reached a temperature below
0°C/32°F, ice crystals may form on the insertion tube
and the well. This, in turn, may cause verdigris to
form on the material.
To prevent this from happening, simply heat up the
calibrator to 50°C/122°F.
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Caution…
About the use:
• Do not use the instrument if the ventilator is out of
order.
• Before cleaning the calibrator, you must switch it off,
allow it to cool down and remove all cables.
About the well, insertion tube and grid plate:
• The well and the insertion tube must be clean before
use.
• Scratches and other damage to the insertion tubes
should be avoided by storing the insertion tubes
carefully when not in use.
• The insertion tube must never be forced into the
well. The well could be damaged as a result, and the
insertion tube may get stuck.
• Before using new insertion tubes for the calibration,
the insertion tubes must be heated up to maximum
temperature - 320°C (608°F) / 650°C (1202°F) - for a
period of minimum 30 minutes.
In order to ensure the best calibration of your
sensors please avoid using insertion tubes in the
ITC-320 calibrator which have been used in the ITC 650 calibrator.
• The insertion tube must always be removed from the
calibrator after use.
The humidity in the air may cause verdigris to form
on the insertion tube inside the instrument. There is
a risk that the insertion tube may become stuck if
this is allowed to happen.
• If the calibrator is to be transported, the insertion
tube must be removed to avoid damage to the
instrument.
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Note…
The product liability only applies if the instrument
is subject to a manufacturing defect. This liability
becomes void if the user fails to follow the
maintenance instructions set out in this manual or
uses unauthorised spare parts.
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3.0 Setting up the calibrator
3.1 Receipt of the calibrator
When you receive the instrument…
• Carefully unpack and check the calibrator and the accessories.
• Check the parts off against the list shown below.
If any of the parts are missing or damaged, please contact the
dealer who sold the calibrator.
You should receive:
• 1 calibrator
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• 1 mains cable
• 1 set of test cables (1 black, 1 red)
• 1 insertion tube
• 3 pcs. insulation plugs for 5, 8, 11 mm sensors
(ITC-155 A only)
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• 1 tool for insertion tube
• 1 traceable certificate
• 1 reference manual
Reference Ma nual
• 1 user manual
User Manual
• 1 RS 232 serial cable
• 1 CD-ROM containing software package
“JofraCal”.
When reordering, please specify the parts number found
in the list of accessories, section 10.0.
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3.2 Preparing the calibrator
Warning
• The calibrator must not be used in areas prone to
explosives hazards.
• The calibrator must be kept clear within an area of 20
cm on all sides and 1 metre above the calibrator.
Note…
The instrument must not be exposed to draughts.
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Fig. 1
When setting up the calibrator, you must…
Place the calibrator on an even horizontal surface in the spot
you intend to use it.
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Caution…
Do not use the instrument if the ventilator is out of order.
g
The calibrator is now ready for use.
Ensure a free supply of air to the ventilator located at the
bottom of the instrument.
Check the voltage of the power control switch (on/off switch
(230V/115V)). If the voltage of the power control switch
differs from the line voltage, you must adjust the voltage of
the power control switch as follows (see Fig. 1):
A. Open the fuse box lid using a screwdriver.
B. Take out the fuse box.
C. Remove both fuses and insertion tube two new fuses.
These must be identical and should correspond to the
line voltage. See section 10.0.
B. Turn the fuse box 180° and slide it into place.
Check that the earth connection for the instrument is present
and attach the cable.
Select an insertion tube with the correct bore diameter. See
section 3.3 for information on how to select insertion tubes.
3.3 Choice of insertion tube
Caution…
Before using new insertion tubes for the calibration, the
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insertion tubes must be heated up to maximum temperature
- 320°C (608°F) / 650°C (1202°F) - for a period of minimum
30 minutes.
In order to ensure the best calibration of your sensors
please avoid using insertion tubes in the ITC-320 calibrator
which have been used in the ITC-650 calibrator.
Insertion tubes are selected on the basis of the diameter of the sensor
to be calibrated.
Use the table for insertion tubes in section 10.0 to find the correct part
number.
Alternatively, you may order an undrilled insertion tube and drill the
required hole yourself. The finished dimension should be as follows:
• Sensor diameter +0.2
+0.05/-0 mm.
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3.4 Inserting the sensor
Before inserting the sensor and switching on the calibrator, please note
the following important warning:
Insert the sensor as shown in Fig. 2.
Fig. 2
In order to spare the sensor and its connections it is recommended to
use a heat protection shield (104216) at high temperatures (see Fig.
3).
Warning
• Never use heat transfer fluids such as silicone, oil,
paste, etc.
These fluids may penetrate the calibrator and cause
damage or create poisonous fumes.
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Sensor under test
Thermal protection shield
Insertion tube
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Fig. 3
Caution…
• The well and the insertion tube must be clean before
use.
• Scratches and other damage to the insertion tubes
should be avoided by storing the insertion tubes
carefully when not in use.
• The insertion tube must never be forced into the well.
The well could be damaged as a result, and the
insertion tube may get stuck.
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Caution – Hot surface
• Do not touch the grid plate, the well or the insertion tube
as the calibrator is heating up – they may be very hot.
• Do not touch the tip of the sensor when it is removed
from the insertion tube/well – it may be very hot.
• Do not touch the handle of the calibrator during use – it
may be very hot.
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4.0 Operating the calibrator
4.1 Keyboard, display and connections
Keyboard
Fig. 4
Pos. Description
CALIBRATION INSTRUMENTS
SWITCH
TEST
AUTO
STEP
ESC
MENU
LCD.
SWITCH TEST button used to activate SWITCH TEST.
The function automatically detects the opening/closing
temperatures for thermostats.
AUTO STEP button used to activate AUTO STEP.
The function is used to switch between a series of settemperatures automatically.
ESC/MENU button used as Escape key or to activate the
menu system (hold button down for min. 2 seconds).
ENTER button used to accept chosen options.
DOWN ARROW button used to adjust temperature values
(value decreases) and to select menu options.
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Display
Fig. 5
Pos. Description
UP ARROW button used to adjust temperature values
(value increases) and to select menu options.
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CHECKMARK displayed when the calibrator is stable.
SWITCH TEST input open.
SWITCH TEST input closed.
AUTO STEP symbol used to indicate that the function is
active (symbol flashes repeatedly).
Used to display set-temperatures, time-until-stable and
parameter values in the menu system.
Minute time unit for bottom display.
Fahrenheit temperature unit for bottom display.
Celsius temperature unit for bottom display.
Fahrenheit temperature unit for top display.
Celsius temperature unit for top display.
Used to display Read-temperature and parameters in the
menu system.
Connections
Warning
• The switch-test connectors, pos. 2 on the front panel,
must NEVER be connected to a voltage source.
• Thermostats must not be connected to any other
voltage source during a test.
All connections are located on the front panel.
-
+
Switch Test
RS232
Fuse
230V 5AF/115V 10AF
115V
Fig. 6
Pos. Description
Power control switch with connection for cable and on/off
switch. Also contains the main fuse. See section 7.0 for
information on how to change the fuses.
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Connection for thermostat test.
Connection for RS232 cable.
C
4.2 Starting the calibrator
The instrument is initialised and the last calibration date is
The calibration date will be displayed for approx. 2 seconds.
The initialisation process has been completed and the
All settings are stored when the calibrator is switched off.
Switch the calibrator on using the power control switch (pos.
1 in Fig. 6).
displayed:
calibrator is ready for use.
When the instrument is switched back on again, the status will
be the same as when it was switched off.
4.3 Selecting the set-temperature
Press
or to adjust the set-temperature.
The current selection flashes in the bottom display:
°
°C
The starting point is the last chosen set-temperature (even if
the instrument has been switched off).
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Press
to accept the change or to cancel.
C
C
The calibrator will now heat up/cool down.
The top display continuously shows the read-temperature.
The bottom display shows either the set-temperature or the
estimated time in whole minutes until the calibrator will be
stable:
°
min
When the calibrator is stable the display will show the
checkmark symbol. The instrument will emit an audible alarm
and the estimated time until stable will be replaced by the settemperature:
°
°C
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4.4 Using the SWITCH TEST
SWITCH TEST automatically locates the switch temperature of a
thermostat.
You must enter a temperature range T
temperature is expected to be found. You must also specify the slope
rate to be used during the test in SETUP (the smaller the value, the
more accurate the results of the test and the longer the test will take).
The function can be illustrated using the following example:
min
- T
, within which the switch
max
Fig. 7
The symbols
Press
the function is active.
The function can be cancelled at any time by pressing
.
for SWITCH TEST will flash to indicate that
.
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C
C
Press
or to select the required T
°C
min
:
Press
Press
to accept your selection.
or to select the required T
°C
max
:
Press
to accept your selection.
The calibrator will now start working towards the T
°
°C
Once the T
has been reached and the calibrator is stable, the
min
instrument will emit an audible alarm and display the status for one
second:
°
min
:
°C
123312 03 17-08-2004 25
The calibrator will now start working towards the T
C
C
using the slope
max
rate selected in SETUP. The flashing SWITCH TEST symbol indicates
the current status:
°
°C
The instrument will check for changes in the SWITCH TEST. If no
change has been detected by the time T
is reached, the instrument
max
will register an ERROR.
The calibrator will stabilise at this temperature, and then work towards
the T
using the slope rate selected in SETUP.
min
The flashing SWITCH TEST symbol indicates the current status:
°
°C
The instrument will check for changes in the SWITCH TEST input once
again. If no change has been detected by the time the T
has been
min
reached, the instrument will register an ERROR.
The results of the test will be displayed as 3 values: an “Open”
temperature, a “Close” temperature and a “Hyste” hysteresis
temperature (the difference between the two temperatures).
The open temperature is shown first:
°C
Press
to display the close temperature:
°C
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If a temperature has not been found, the instrument will
Press
display an “Error” (the “Hyste” temperature will also be shown
as an “Error”):
Press
instrument will store the T
SWITCH TEST is activated.
to display the hysteresis temperature:
°C
or to end the SWITCH TEST. The
min
and T
until the next time the
max
Note…
you can activate
temporary results.
or during the test to display the
123312 03 17-08-2004 27
4.5 Using the AUTO STEP
AUTO STEP is used to step automatically between a range of different
calibration temperatures. This is useful when calibrating sensors in
places which are hard to reach, and when calibrating sensors for which
the output is displayed in a different location.
The function can be illustrated using the following example:
Fig. 8
The
Press
function is active.
The function can be cancelled at any time by pressing
.
symbol for AUTO STEP flashes to indicate that the
28 17-08-2004 123312 03
Press
(minimum 2 steps, maximum 9 steps):
Press
or to select the required number of steps
to accept your selection.
Repeat the above procedure for all temperature steps.
Press
step 1:
Press
or to select the required set-temperature for
°C
to accept your selection.
123312 03 17-08-2004 29
Press
the last temperature step.
Press
the calibrator to remain at every step:
Press
to accept your choices once you have adjusted
or to set the amount of extra time you wish
min
to accept your selection.
C
The following will be displayed for one second to indicate that the
calibrator is ready to work towards the set-temperature:
°C
The calibrator will now work towards the given set-temperature. An
audible alarm will be emitted once the calibrator is stable.
The calibrator will wait the specified amount of extra time. The
instrument indicates this by counting down the amount of time
remaining:
°
min
The calibrator will then go to the next step. The procedure is the same
as for the first step. This process will be repeated until the last step has
been executed and the function has been completed.
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4.6 Using the MENU
Hold down
Press
Press
parameters:
or to switch between the adjustable
for more than approx. 2 seconds:
to select SETUP.
⇑⇓
⇑⇓
⇑⇓
⇑⇓
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C
F
If you wish to exit SETUP, simply press
.
The instrument will ignore all changes if you press
adjusting any of the parameters.
Press
to adjust the parameter.
4.6.1 Adjusting the temperature unit
- and
Press
or to switch between °C and °F:
°
°
when
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Press
to accept your selection.
4.6.2 Adjusting the max-temperature
If the current set-temperature is higher than the new max-
Press
0.1°C or 0.1°F:
temperature, you will need to adjust the set-temperature. The
instrument will immediately begin to cool (if required) as soon
as the new max-temperature is accepted.
Press
If you wish to exit SETUP, simply press
or to set the max-temperature in steps of
°C
to accept your selection.
.
4.6.3 Adjusting the SWITCH TEST slope rate
123312 03 17-08-2004 33
Press
temperature between 0.1°C and 9.9°C in steps of 0.1°C (if
your chosen temperature unit is °F, the range will change to
between 0.1°F and 9.9°F in steps of 0.1°F):
Press
or to set the SWITCH TEST slope rate to a
°C
to accept your selection.
4.6.4 Adjusting the extra stability time
The extra stability time is the amount of extra time you wish to elapse
before the checkmark symbol
stabilised.
is displayed after the calibrator has
Press
20 minutes:
Press
or to set the time to anywhere between 0 and
min
to accept your selection.
4.6.5 Adjusting the temperature resolution
- and
Press
or to select the required number of decimals:
°C
°C
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Press
to accept your selection.
4.7 Simulation/training
The instrument will then revert to the standard display.
The calibrator’s simulation mode is used to train personnel in the use
of the instrument, etc. The simulation setting differs from the standard
setting as follows:
• The instrument will not actually heat up or cool down the well.
• The heating and cooling processes are simulated at around 10
The calibrator will remain in simulation mode until it is switched off.
Hold down the
calibrator.
The instrument will display the following screen:
times the normal speed of these operations.
and buttons while you switch on the
123312 03 17-08-2004 35
5.0 Storing and transporting the calibrator
Switch off the calibrator using the power control switch.
Note that the calibration procedure may be interrupted at any time
using the power control switch. Switching off the calibrator during the
calibration process will not damage either the instrument or the sensor.
Caution…
The following guidelines should always be observed when
storing and transporting the calibrator. This will ensure that
the instrument and the sensor remain in good working
order.
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Fig. 9
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The following routine must be observed before the insertion tube is
removed and the instrument switched off:
Over 100°C/212°F
If the calibrator has been heated up to temperatures above
100°C/212°F, you must wait until the instrument reaches a
temperature below 100°C/212°F before you switch it off.
Below 0°C/32°F (applies only to the ITC-155 A models)
If the calibrator has reached a temperature below 0°C/32°F,
ice crystals may form on the insertion tube and the well.
This, in turn, may cause verdigris to form on the material.
To prevent this from happening, simply heat up the
calibrator to 50°C/122°F.
Remove the insertion tube from the calibrator using the tool for
insertion tube supplied with the instrument as shown in Fig. 9.
Caution…
• The insertion tube must always be removed from the
calibrator after use.
The humidity in the air may cause verdigris to form on the
insertion tube inside the instrument. There is a risk that
the insertion tube may become stuck if this is allowed to
happen.
• The insertion tube must be removed to avoid damage to
the instrument if the calibrator is to be transported long
distances.
Warning
Never leave hot insertion tubes which have been removed
from the calibrator unsupervised – they may constitute a fire
hazard.
If you intend to store the calibrator in the optional aluminium
carrying case after use, you must ensure that the instrument
has cooled to a temperature below 100°C/212°F before
placing it in the carrying case.
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6.0 Errors
If the calibrator detects an error during operation, the instrument will
terminate all functions and display an error code:
Likely cause: Defective RTD-sensor or excessively high
temperature measured by the instrument’s internal
sensor.
Solution: The calibrator should be returned to the
manufacturer for service.
Warning
The calibrator must be switched off before any attempt to
service the instrument is made.
Note…
Ametek Denmark’s liability ceases if:
• parts are replaced/repaired using spare parts which are
not identical to those recommended by the manufacturer.
• non-original parts are used in any way when operating
the instrument.
Ametek Denmark’s liability is restricted to errors which
originated from the factory.
Likely cause: The calibration coefficients have not been accepted.
Solution: Try again. If the error message returns, the
calibrator should be returned to the manufacturer
for service.
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Likely cause: An error has occurred in the control circuit.
Solution: The calibrator should be returned to the
manufacturer for service.
Nothing happens when the power control switch (on/off switch)
is pressed.
Likely cause: There is no power to the calibrator.
Solution: Check that the calibrator is correctly connected.
Check the fuse.
If there are no problems with the mains cable or the
fuse, the calibrator should be returned to the
manufacturer for service.
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7.0 Setting the main voltage and replacing
the fuses
Fig. 10
Warning
• The fuse box must not be removed from the power
control switch until the mains cable has been
disconnected.
• The two main fuses must be identical and correspond to
the chosen voltage.
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Locate the main fuses in the fuse box in the power control
switch and check the voltage of the power control switch
(on/off switch (230V/115V)). If the voltage of the power
control switch differs from the line voltage, you must adjust
the voltage of the power control switch.
Open the lid of the fuse box using a screwdriver.
Remove the fuse box.
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Remove both fuses and insert two new fuses. These must be
identical and should correspond to the line voltage.
• ITC-155: 115V, 2AT = 105014 / 230V, 1AT = 105007
• ITC-320/650: 115V, 10AF = 60B302 / 230V, 5AF = 60B301
If the fuses blow immediately after you have replaced them,
the calibrator should be returned to the manufacturer for
service.
Slide the fuse box into place with the correct voltage turning
upwards.
7.1 Returning the calibrator for service
When returning the calibrator to the manufacturer for service, please
enclose a fully completed service information form. Simply copy the
form on the following page and fill in the required information.
The calibrator should be returned in the original packing.
123312 03 17-08-2004 41
Service info
Customer data: Date:
Customer name and address:___________________________________________
Attention and Dept.:___________________________________________________
Fax no./Phone no.:____________________________________________________
Your order no.:_______________________________________________________
Delivery address:_____________________________________________________
Distributor name:_____________________________________________________
Instrument data:
Model and Serial no.:__________________________________________________
Warranty claimed Yes:____ No:_____ Original invoice no.:_________________
___________________________________________________________________
Temp. Sensor Service request: This instrument is sent for
calibration input (please tick off):
___ Calibration as left ___ Check
___ Calibration as found and as left ___ Service
___ Accredited calibration as left ___ Repair
___ Accredited calibration as found and as left.
___________________________________________________________________
Diagnosis data/cause for return:
Diagnosis/Fault description:_____________________________________________
___________________________________________________________________
Special requests:_____________________________________________________
___________________________________________________________________
Safety precautions: if the product has been exposed to any hazardous substances, it must be
thoroughly decontaminated before it is returned to Ametek. Details of the hazardous substances
and any precautions to be taken must be enclosed.
42 17-08-2004 123312 03
8.0 Maintenance
8.1 Cleaning
Users should/must carry out the following cleaning procedures as and
when required:
• The exterior of the instrument - Clean using water and a soft
• The insertion tube - Must always be clean and should be
• The well - Must always be clean. Dust and textile fibres should be
Caution…
Before cleaning the calibrator, you must switch it off, allow
it to cool down and remove all cables.
cloth.
The cloth should be wrung out hard to avoid any water penetrating
the calibrator and causing damage.
The keyboard may be cleaned using isopropyl alcohol when
heavily soiled.
regularly wiped using a soft, dry cloth.
You must ensure there are no textile fibres on the insertion tube
when it is inserted in the well. The fibres may adhere to the well
and damage it.
removed from the well using e.g. compressed air.
Warning
REMEMBER! Wear goggles when using compressed
air!
123312 03 17-08-2004 43
8.2 Adjusting and calibrating the instrument
You are advised to return the calibrator to Ametek Denmark A/S or an
accredited laboratory at least once a year for calibration and
adjustment.
Alternatively, you can calibrate/adjust the calibrator yourself. You will
need a reference thermometer and a reference sensor with a traceable
certificate. Please follow the instructions given below.
Connect the calibrator to an external precision instrument (e.g. a DTI)
as shown in Fig. 11:
Fig. 11
S
T
N
E
M
U
R
T
S
N
I
N
O
I
T
A
R
B
I
L
A
C
Hold down the
button while pressing the on/off power
control switch.
The instrument is now in adjustment/service mode.
44 17-08-2004 123312 03
Press
or to toggle between the different options:
⇑⇓
⇑⇓
⇑⇓
To exit the adjustment/service mode, switch the instrument off
123312 03 17-08-2004 45
Press
and on again using the power control switch.
to accept your selection.
8.2.1 Adjusting the calibration date
Adjust the date by toggling through the available days, months and
years. Begin by selecting the required day as shown below:
Press
31.
Press
Press
FEB / MAR / APR / MAY / JUN / JUL / AUG / SEP /
OCT / NOV / DEC.
Press
or to select the required day in the interval 1-
to accept your selection.
or to select the required month from JAN /
to accept your selection.
46 17-08-2004 123312 03
Press
or to select a year between 2001–2025.
or
Press
adjusted if necessary to ensure the legality of the date.
Finally, the day, month and year will flash:
Press
press
to accept your selection. The day will be
to accept the date.
to cancel the whole selection.
8.2.2 Calibrating/adjusting the instrument
The internal calibration/adjustment is a complex function which is
divided into a number of different steps:
The instrument will disclose the first calibration temperature by
displaying the text “TEMP.1 XXX°C” for approx. 1 second:
Calibration temperature for calibrators:
ITC-155 A 1. -23°C / -9.4°F
2. 20°C / 68°F
3. 60°C / 140°F
4. 100°C / 212°F
5. 155°C / 311°F
123312 03 17-08-2004 47
ITC-320 A 1. 50°C / 122°F
C
2. 120°C / 248°F
3. 180°C / 356°F
4. 250°C / 482°F
5. 320°C / 608°F
ITC-650 A 1. 50°C / 122°F
2. 200°C / 392°F
3. 350°C / 662°F
4. 500°C / 932°F
5. 650°C / 1202°F
The instrument will now heat up/cool down to reach the first calibration
temperature:
°
°C
Once the calibrator is stable, you need to enter the reference
temperature found using the reference thermometer. The
calibration temperature is suggested as a reference point:
°C
This procedure is repeated for TEMP.2, TEMP.3, TEMP.4 and
TEMP.5.
All five calibration temperatures and associated reference
temperatures have now been entered.
The instrument will now check whether the reference temperatures
which have been entered are within the permitted tolerances.
Permitted tolerances:
• ITC-155 A : ±0,1°C / 0.18°F
• ITC-320 A : ±0,15°C / 0.27°F
• ITC-650 A : ±0,20°C / 0.36°F
48 17-08-2004 123312 03
If the instrument detects excessive deviations for one or more steps, it
will show a screen reading =ERR. in the top of the display. The text
AdJ. will flash in the bottom of the display to indicate that an
adjustment is required (accept by pressing
If the calibrator is found to be within the permitted tolerances, the
instrument will display the text =OK at the top of the display. The text
Cont. will flash in the bottom of the display to indicate that you may
continue without adjustments:
Press
Press
to repeat an adjustment step when it is shown on the display.
Press
to cancel the adjustment function.
to go back to a previous screen and press
to toggle between AdJ. and Cont. on the display.
:
)
123312 03 17-08-2004 49
Press
coefficients. Next, repeat the entire calibration/adjustment
procedure.
when AdJ. is flashing to calculate a new set of
If the new coefficients deviate by more than 4% from the
standard values, the instrument will display an ERROR 2 in
the display. The calculated coefficients will be ignored:
Press
procedure.
Press
calibration/adjustment procedure and enter a new calibration
date (see section 8.2.1).
to repeat the entire calibration/adjustment
when Cont. is flashing to end the
50 17-08-2004 123312 03
9.0 Technical specifications
The illustration below shows the setup which forms the basis for the
technical specifications.
Fig. 12
3
4
2
S
T
N
E
M
U
R
T
S
N
I
N
I
O
T
A
R
B
I
L
A
C
1
123312 03 17-08-2004 51
Pos. Description
Calibrator
Ø4.2 mm insertion tube
Ø4 mm Pt 100 sensor with traceable certificate
DTI 1000 reference precision thermometer with traceable
certificate
TECHNICAL SPECIFICATIONS – ALL MODELS
All specifications are given with an ambient temperature of
23°C/73.4°F ± 3°C/5.4°F
GENERAL SPECIFICATIONS
MECHANICAL SPECIFICATIONS
Dimensions l × w × h 241 × 139 × 375mm / 9.5 × 5.5 × 14.8 inch
Weight
Bore diameter/depth of well ITC-155 A: ø 20 mm / 150 mm
Weight non-drilled insert ITC-155 A: 130 g / 4.6 oz
POWER SUPPLY
Line voltage/frequency ITC-155/320A:
Power consumption ITC-155 A: 150 VA
ITC-155 A: 7.6 kg / 16.8 lb
ITC-320 A: 6.5 kg / 14.3 lb
ITC-650 A: 8.5 kg / 18.7 lb
ø 0.79 inch / 5.9 inch
ITC-320/650 A: ø 30 mm / 160 mm
ø 1.18 inch / 6.3 inch
ITC-320/650A: 940 g / 33.2 oz
90-127VAC / 180-254VAC 45-65 Hz
ITC-650 A:
100-127VAC / 200-254VAC 45-65 Hz
ITC-320/650A: 1150 VA
52 17-08-2004 123312 03
RS232 COMMUNICATION INTERFACE
Type of connection IEC320
ENVIRONMENT
Ambient operating temperature range 0-40°C / 32-104°F
Storage temperature range -20-50°C / -4-122°F
Humidity range 0-90% RH.
Protection class IP10
READOUT SPECIFICATIONS
Resolution 0.1°C / 0.1°F
Temperature units °C / °F
THERMAL SPECIFICATIONS ITC-155 A
Maximum temperature 155°C / 311°F
Minimum temperature -39°C / -38.2°F @ ambient temperature 0°C /
Well specifications 40 mm / 1.57 inch axial homogeneity :
32°F
-23°C / -9.4°F @ ambient temperature 23°C /
73.4°F
-10°C / 14°F @ ambient temperature 40°C /
104°F
0.10°C / 0.18°F @155°C / 311°F
0.05°C / 0.09°F @-20°C / -4°F
50 mm / 1.97 inch axial homogeneity :
0.10°C / 0.18°F @155°C / 311°F
0.10°C / 0.18°F @-20°C / -4°F
60 mm / 2.36 inch axial homogeneity :
0.20°C / 0.36°F @155°C / 311°F
0.15°C / 0.27°F @-20°C / -4°F
70 mm / 2.76 inch axial homogeneity :
0.40°C / 0.72°F @155°C / 311°F
0.35°C / 0.63°F @-20°C / -4°F
123312 03 17-08-2004 53
THERMAL SPECIFICATIONS ITC-155 A
80 mm / 3.15 inch axial homogeneity :
0.8°C / 1.44°F @155°C / 311°F
0.5°C / 0.9°F @-20°C / -4°F
Difference between holes :
0.03°C / 0.05°F
Influence from load :
0.15°C / 0.27°F @155°C / 311°F
0.10°C / 0.18°F @-20°C / -4°F
Influence from load with
ext. reference :
0.02°C / 0.03°F @155°C / 311°F
0.02°C / 0.03°F @-20°C / -4°F
Difference between inserts :
0.08°C / 0.14°F
Long term drift (1 year) :
±0.10°C / ±0.18°F
Calibration accuracy (test limit) ±0.10°C / ±0.18°F
Temperature coefficient 0.02°C/°C (0-40°C) / 0.03°F/°F (32-104°F)
Stability ±0.03°C / ±0.05°F
Reference accuracy ±0.10°C / ±0.18°F
Total accuracy ±0.25°C / 0.45°F
Heating time incl. insert -20°C / -4°F to 23°C / 73.4°F : 4 min.
23°C / 73.4°F to 155°C / 311°F : 14 min.
-20°C / -4°F to 155°C / 311°F : 18 min.
Additional stabilisation time 10 min.
Cooling time incl. insert 155°C / 311°F to 100°C / 212°F : 4 min.
155°C / 311°F to 23°C / 73.4°F : 14 min.
23°C / 73.4°F to -20°C / -4°F : 23 min.
155°C / 311°F to -20°C / -4°F : 37 min.
54 17-08-2004 123312 03
THERMAL SPECIFICATIONS ITC-320 A
Maximum temperature 320°C / 608°F
Minimum temperature 10°C / 50°F @ ambient temperature 0°C / 32°F
33°C / 91°F @ ambient temperature 23°C / 73.4°F
50°C / 122°F@ ambient temperature 40°C /
104°F
Well specifications 40 mm / 1.57 inch axial homogeneity :
0.60°C / 1.08°F @320°C / 608°F
0.30°C / 0.54°F @155°C / 311°F
0.10°C / 0.18°F @50°C / 122°F
50 mm / 1.97 inch axial homogeneity :
0.90°C / 1.62°F @320°C / 608°F
0.50°C / 122°F @155°C / 311°F
0.15°C / 0.27°F @50°C / 122°F
60 mm / 2.36 inch axial homogeneity :
1.20°C / 2.16°F @320°C / 608°F
0.60°C / 1.08°F @155°C / 311°F
0.20°C / 0.36°F @50°C / 122°F
70 mm / 2.76 inch axial homogeneity :
1.50°C / 2.7°F @320°C / 608°F
0.80°C / 1.44°F @155°C / 311°F
0.25°C / 0.45°F @50°C / 122°F
80 mm / 3.15 inch axial homogeneity :
2.0°C / 3.60°F @320°C / 608°F
1.0°C / 1.80°F @155°C / 311°F
0.30°C / 0.54°F @50°C / 122°F
Difference between holes :
0.07°C / 0.13°F
123312 03 17-08-2004 55
THERMAL SPECIFICATIONS ITC-320 A
Influence from load :
0.2°C / 0.36°F @320°C / 608°F
Influence from load with
ext. reference :
0.03°C / 0.05°F @320°C / 608°F
Difference between inserts:
0.10°C / 0.18°F
Long term drift (1 year) :
±0.10°C / ±0.18°F
Calibration accuracy (test limit) ±0.15°C / ±0.27°F
Temperature coefficient 0.03°C/°C (0-40°C) / 0.05°F/°F (32-104°F)
Stability ±0.03°C / ±0.05°F
Reference accuracy ±0.10°C / ±0.18°F
Total accuracy ±0.30°C / ±0..54°F
Heating time incl. insert 50°C / 122°F to 320°C / 608°F : 7 min.
Additional stabilisation time 10 min.
Cooling time incl. insert 320°C / 608°F to 100°C / 212°F: 30 min.
320°C / 608°F to 50°C / 122°F : 60 min.
THERMAL SPECIFICATIONS ITC-650 A
Maximum temperature 650°C / 1202°F
Minimum temperature 10°C / 50°F @ ambient temperature 0°C / 32°F
33°C / 91°F @ ambient temperature 23°C / 73.4°F
50°C / 122°F@ ambient temperature 40°C /
104°F
56 17-08-2004 123312 03
THERMAL SPECIFICATIONS ITC-650 A
Well specifications 40 mm / 1.57 inch axial homogeneity :
0.50°C / 122°F @650°C / 1202°F
0.25°C / 0.45°F @320°C / 608°F
0.05°C / 0.09°F @50°C / 122°F
50 mm / 1.97 inch axial homogeneity :
0.85°C / 1.53°F @650°C / 1202°F
0.40°C / 0.72°F @320°C / 608°F
0.07°C / 0.13°F @50°C / 122°F
60 mm / 2.36 inch axial homogeneity :
1.3°C / 2.34°F @650°C / 1202°F
0.60°C / 1.08°F @320°C / 608°F
0.10°C / 0.18°F @50°C / 122°F
70 mm / 2.76 inch axial homogeneity :
1.80°C / 3.24°F @650°C / 1202°F
0.90°C / 1.62°F @320°C / 608°F
0.15°C / 0.27°F @50°C / 122°F
80 mm / 3.15 inch axial homogeneity :
2.50°C / 4.5°F @650°C / 1202°F
1.10°C / 1.98°F @320°C / 608°F
0.20°C / 0.36°F @50°C / 122°F
Difference between holes :
0.10°C / 0.18°F
Influence from load :
0.20°C / 0.36°F @650°C / 1202°F
Influence from load with
ext. reference :
0.05°C / 0.09°F @650°C / 1202°F
123312 03 17-08-2004 57
THERMAL SPECIFICATIONS ITC-650 A
Difference between inserts:
0.25°C / 0.45°F
Long term drift (1 year) :
±0.2°C / ±0.36°F
Calibration accuracy (test limit) ±0.20°C / ±0.36°F
Temperature coefficient 0.05°C/°C (0-40°C) / 0.09°F/°F (32-104°F)
Stability ±0.04°C / ±0.07°F
Reference accuracy ±0.10°C / ±0.18°F
Total accuracy ±0.50°C / 0.9°F
Heating time incl. insert 50°C / 122°F to 650°C / 1202°F : 25 min.
Additional stabilisation time 10 min.
Cooling time incl. insert 650°C / 1202°F to 100°C / 212°F : 56 min.
650°C / 1202°F to 50°C / 122°F : 95 min.
STANDARDS – ALL MODELS
The following standards are observed
according to the EMC-directive (89/336)
The following standards are observed
according to the low voltage-directive
(73/23)
EN61326-1:1997/A1:1998 : Electrical
equipment for measurement, control and
laboratory use – EMC requirements
EN61010-1:1993/A2:1995 : Safety requirements
for electrical equipment for measurement, control
and laboratory use, part 1: general requirement
INPUT SPECIFICATIONS – ALL MODELS
Signal range on : 0-10kΩ / off : >100kΩ
Internal power supply 5 V (open) / 2.5 mA (closed)
Type of connection 4 mm safety sockets
58 17-08-2004 123312 03
10.0 List of accessories
All parts listed in the list of accessories can be obtained from the
factory through our dealers.
Please contact your dealer for assistance if you require parts which do
not appear on the list.
List of accessories
Accessories Part no.
Fuse 115V, 10AF (ITC-320/650 A) 60B302
Fuse 230V, 5AF
Fuse 63mAT
Cover for fuse holder
Fuse 500mAT
Fuse 115V, 2AT
Fuse 230V, 1AT
Fuse 4AT
User manual 123311
Reference manual 123312
Protocol manual 105402
Tool for insertion tube 60F170
Heat protection shield 104216
Alu. carrying case incl. carton 123396
Mains cable, 115V, US, type B 60F135
Mains cable, 240V, UK, type C 60F136
Mains cable, 220V, South Africa, type D 60F137
Mains cable, 220V, Italy, type E 60F138
Mains cable, 240V, Australia, type F 60F139
Mains cable, 230V, Europe, type A 60F140
Mains cable, 230V, Denmark, type G 60F141
Mains cable, 220V, Switzerland, type H 60F142
Mains cable, 230V, Israel, type I 60F143
Cleaning brush, 4mm 122832
Cleaning brush, 6mm 60F174
(ITC-320/650 A) 60B301
(ITC-320/650 A) 105333
(ITC-320/650 A) 105332
(ITC-320/650 A) 123448
(ITC-155 A) 105014
(ITC-155 A) 105007
(ITC-155 A) 105334
123312 03 17-08-2004 59
Cleaning brush, 8mm 122822
Set of insulation plugs
(ITC-155 A only) 123374
Set of test cables 104203
Certificate, National 99-C-T
RS232 serial cable 105366
JofraCal PC software 124915
PART NO. FOR STANDARD INSERTION TUBES
Sensor
size
undrilled
undrilled
only with
ref. hole
1/8”
3/16”
1/4”
5/16”
3/8”
7/16”
1/2”
9/16”
5/8”
3 mm
4 mm
5 mm
6 mm
7 mm
8 mm
9 mm
10 mm
11 mm
12 mm
13 mm
14 mm
15 mm
16 mm
ITC-155 A
123286
123285
123279
123280
123281
123282
123283
123301**
123302**
-
-
123270
123271
123272
123273
123274
123275
123276
123277
123278
123299**
123300**
-
-
-
ITC-320 A
122719
122721
105676
105678
105680
105682
105684
105686
105688
105690
105692
105622
105624
105626
105628
105630
105632
105634
105636
105638
105640
105642
105644
105646
105648
ITC-650 A
122719
122721
105676
105678
105680
105682
105684
105686
105688
105690
105692
105622
105624
105626
105628
105630
105632
105634
105636
105638
105640
105642
105644
105646
105648
60 17-08-2004 123312 03
** Inserts are delivered without 4 mm reference hole, but with matching insulation plugs.
Description
(metric)
Type 1
Type 2
Type 3
Type 4
Description
(inch)
Type 4
Type 5
Type 6
NOTE:
All multi-hole insertion tubes (metric and inches) for ITC-155 are supplied with a
matching insulation plug.
PART NO. FOR STANDARD INSERTION TUBES – MULTI-HOLE
ITC-155 A
123294
123295
123296
PART NO. FOR STANDARD INSERTION TUBES – MULTI-HOLE
-
ITC-155 A
123297
123298
-
ITC-320 A
122750
122752
122754
122756
ITC-320 A
-
122758
122760
ITC-650 A
122750
122752
122754
122756
ITC-650 A
122758
122760
-
123312 03 17-08-2004 61
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