Ametek JOFRA ATC-125 A User manual

Reference Manual
Temperature Calibrator
JOFRA ATC-125/140/156/157/250/320/650 A/B
Copyright 2009 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 9 chapters. These 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 multi-
lingual 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 that must be followed when
using the instrument, as well as any risks involved.
Warning
Events that may compromise the safe use of the
instrument and result in considerable personal or
material damage.
Caution…
Events that 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 Introduction ..............................................................................5
2.0 Safety instructions...................................................................7
3.0 Setting up the calibrator........................................................13
3.1 Receipt of the calibrator.............................................................. 13
3.2 Preparing the dry-block calibrator............................................... 16
3.2.1 When setting up the dry-block calibrator, you must… ... 17
3.2.2 Choice of insertion tube.................................................. 19
3.2.3 Inserting the sensors ...................................................... 20
3.3 Preparing the liquid bath calibrator (ATC-140/250 only) ............ 22
3.3.1 When setting up the liquid bath calibrator, you must….. 23
3.3.2 Selection of fluids ........................................................... 27
3.3.3 Handling of lids............................................................... 28
3.3.4 Inserting the sensors ...................................................... 29
4.0 Operating the Calibrator........................................................30
4.1 Keyboard, display and standard connections............................. 30
4.2 Input module (B versions only) ................................................... 33
4.3 Display readouts ......................................................................... 34
4.3.1 Main screen temperature values.................................... 35
4.3.2 Stability of temperature values....................................... 35
4.4 SET temperature menu .............................................................. 36
4.5 Calibration menu......................................................................... 36
4.5.1 Running a calibration...................................................... 37
4.5.2 Showing calibration results ............................................ 40
4.5.3 Displaying calibration information .................................. 41
4.6 Switch test menu ........................................................................ 42
4.6.1 Running a switch test ..................................................... 44
4.6.2 Showing switch test results ............................................ 45
4.7 Auto step menu........................................................................... 47
4.7.1 Running an Auto step calibration ................................... 48
4.7.2 Auto step test results...................................................... 49
4.8 Setup menu................................................................................. 51
4.8.1 Loading a setup.............................................................. 51
4.8.2 Saving a setup................................................................ 52
4.8.3 Adjusting the display contrast ........................................ 52
4.8.4 Altering temperature display settings ............................. 52
4.8.5 Setting the sensor input parameters (B versions only) .. 55
4.8.6 Altering Stability criteria.................................................. 58

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4.8.7 Selecting the stirrer speed (ATC-140/250 A/B only) ...... 59
4.8.8 Setting the access code ................................................. 59
4.8.9 Resetting the calibrator setup to factory defaults .......... 60
4.8.10 About the calibrator........................................................ 61
4.9 Simulation or training .................................................................. 62
5.0 After use..................................................................................63
5.1 Storing and transporting the calibrator ....................................... 63
5.8.1 Transporting the dry-block calibrator ............................. 65
5.8.2 Transporting the liquid bath calibrator............................ 65
5.2 Emptying the well (liquidbaths only) ........................................... 66
6.0 Replacing the main fuses......................................................67
6.1 Returning the calibrator for service............................................. 68
7.0 Maintenance............................................................................70
7.1 Cleaning...................................................................................... 70
7.2 Adjusting and calibrating the instrument..................................... 72
7.2.1 Introduction to AmeTrim-ATC Software ......................... 72
7.2.2 Installing the AmeTrim-ATC Software............................ 73
7.2.3 Connecting the PC and the Calibrator ........................... 73
7.2.4 Starting the AmeTrim-ATC Software.............................. 73
7.2.5 Temperature Adjustment................................................ 75
7.2.6 Input Adjustment (B versions only) ................................ 80
7.2.7 Reference Sensor .......................................................... 85
7.2.8 Managing DTI sensor coefficients.................................. 87
7.2.9 Setup Printer .................................................................. 88
8.0 Technical specifications........................................................89
9.0 List of accessories...............................................................121

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1.0 Introduction
Congratulations on your new AMETEK JOFRA ATC
Calibrator!
With this 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 are 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 ATC-125 A - Cooling calibrator
 JOFRA ATC-125 B - Cooling calibrator with input panel
 JOFRA ATC-140 A - Cooling calibrator
 JOFRA ATC-140 B - Cooling calibrator with input panel
 JOFRA ATC-155 A - Cooling calibrator
 JOFRA ATC-155 B - Cooling calibrator with input panel
 JOFRA ATC-156 A - Cooling calibrator
 JOFRA ATC-156 B - Cooling calibrator with input panel
 JOFRA ATC-157 A - Cooling calibrator
 JOFRA ATC-157 B - Cooling calibrator with input panel
 JOFRA ATC-250 A - Heating calibrator
 JOFRA ATC-250 B - Heating calibrator with input panel
 JOFRA ATC-320 A - Heating calibrator
 JOFRA ATC-320 B - Heating calibrator with input panel
 JOFRA ATC-650 A - Heating calibrator
 JOFRA ATC-650 B - Heating calibrator with input panel

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ISO-9001 certified
AMETEK Denmark A/S was ISO-9001 certified in September
1994 by Bureau Veritas Certification Denmark.
CE-label
Your new calibrator bears the CE label and
conforms to the EMC Directive and the Low-
voltage Directive.
Technical assistance
Please contact the dealer from whom you acquired the instrument
if you require technical assistance.
Warranty
According to current terms of sale and delivery.
This warranty 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!
In order to avoid any personal injuries and/or damage to
the instrument all safety instructions and warnings must be
observed.
Disposal – WEEE Directive
These calibrators contain Electrical and Electronic circuits
and must be recycled or disposed of properly (in
accordance with the WEEE Directive 2002/96/EC).
Warning……
About the use:
 The calibrator must not be used for any purposes other
than those described in this manual.
 The calibrator has been designed for interior use only
and should not be used in hazardous areas, where
vapour or gas leaks, etc. may constitute a danger of
explosion.
 The calibrator must be kept free 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. in the dry-block calibrators. 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 to wear goggles
when using compressed air in the dry-block calibrator
and cleaning oil in the liquid bath calibrator.

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 The ATC-125 contains the gases R-1270 and R-704
under pressure. The calibrator must under no
conditions be stored or operated at ambient
temperatures above 60C (140F). Doing so may cause
a hazard.
About the front panel:
 For B versions only, the sockets on the input module
must NEVER be connected to voltages exceeding 5V
for the TC/RTD sockets and 45V for the mA/V sockets
proportional to ground. Thermostats must not be
connected to any other voltage sources during test.
About insertion tubes, insulation plugs, well and
sensor:
 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 down 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.
About the liquid bath:
 For liquid bath ensure that the sensor is absolutely
clean and dry as a few drops of water in the well (liquid
baths) might cause a steam explosion.
 Do not pour cold fluid into a hot well – it might cause
an explosion.

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 AMETEK Denmark A/S does not take any
responsibility, if the well is filled with other fluids than
those recommended.
 Liquid baths should only be operated by trained
personal.
 Heat transfer fluids must only be used in calibrators
prepared as a liquid bath. If these fluids are overheated
they will create noxious or toxic fumes. Proper
ventilation must be used.
 Product information on the fluid must be carefully
investigated before use.
 Do not handle hot fluid.
 If the oil is heated beyond the flash point, it may
constitute a fire hazard.
 Do not pour water or any other fluids into a bath filled
with hot oil, because only a few drops of water might
cause a steam explosion, if poured into 250°C hot oil.
 Do not under any circumstances pour water on burning
oil. It might cause a dangerous steam explosion.
Caution – Hot surface
This symbol is engraved in the grid plate.
 Do not touch the grid plate, the well or the insertion
tube when the calibrator is heating up – they may be
very hot.
 Do not touch the lid or the spill tray when the calibrator
is heating up – they may be very hot (ATC-140/250 A/B
only).
 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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 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.
Caution – Cold surface
Below 0°C/32°F (applies only to the ATC-125/140/156/
157 A/B models)
 Do not touch the well or insertion tube when these are
below 0°C/32°F - they might create frost-bites.
 If the calibrator has reached a temperature below
0°C/32°F, ice crystals may form on the insertion tube
and on the well. This, in turn, may cause verdigris to
form on the material.
To prevent this from happening, the insertion tube and
the well must be dried. This is done by heating up the
calibrator to min. 100°C/212°F and any water left will
evaporate.
Remove the insulation plug while heating up.
 It is very important that humidity in the well and insertion
tube is removed to prevent corrosion and frost
expansion damages.
Caution…
About the use:
 Do not use the instrument if the internal fan is out of
order.
 Before cleaning the calibrator, you must switch it off,
allow it to cool down and remove all cables.
About the liquid bath:
 Be careful not to overfill the well with oil.
 Avoid getting silicone oil on the clothes. It is impossible
to wash off. (ATC-140/250)

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The oil level rises several centimetres when the
temperature is rising. To stop overflow switch off the
main power and the oil level will decrease.
 Carefully wipe off all silicone oil from the sensor under
test to avoid spreading of the silicone oil.
 Be careful to select the right oil for the right task. Using
other than the recommended oils might cause damage
to the calibrator or degrade the performance.
 Remove excess hot fluid with the outmost care, as it
might be very hot.
 Do not attempt to remove hot fluid with the liquid
drainage tube, as it might melt.
About the well, insertion tube and sensor:
 The well and the insertion tube must be clean and dry
before use.
 Do not use any alkali, acid or ionic fluids in the
aluminium well as it might be damaged.
 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 – 250°C (482°F) / 320°C (608°F) / 650°C
(1202°F) - for a period of minimum 30 minutes (ATC-
250/320/650 A/B only).
 The insertion tube must always be removed from the
calibrator after use.
The humidity in the air may cause corrosion oxidation
on the insertion tube inside the instrument. There is a
risk that the insertion tube may get 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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 The tip of the sensor should rest at the bottom of the
sensor basket for optimum results (liquid baths only).
 Be careful not to submerge the handle or wire inlet of
the sensor-under-test in the fluid, as this might damage
the sensor (liquid baths only).
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 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 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
 1 mains cable
 2 sets of test cables (2 black, 2 red –
B versions only)
 1 CD-ROM containing software package
“JOFRACAL”
 1 AMETRIM-ATC/DTI software package to
adjust the ATC series
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 1 RS232 serial cable
 1 tool for insertion tube
 1 traceable certificate (A versions)
 2 traceable certificates (B versions)
 1 reference manual
 1 user manual
ATC-125/156/157/320/650 A/B only
 1 insertion tube (user specified)
 3 pcs. insulation plugs for 6, 10, 16 mm sensors
(ATC-125/156 A/B only)
or
3 pcs. insulation plugs for 5, 8, 11 mm sensors
(ATC-157 A/B only)
Reference Ma nual
User Ma nual

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Dow corning
Material data sheet
Oil
ATC-140/250 A/B only (dry-block)
 1 dry block kit – metric consisting of :
- 1 insertion tube, multi-hole, metric, with
11 bores (incl. reference bore)
- 1 pcs. insulation plug for multi-hole,
metric (ATC-140 A/B only)
or
 1 dry block kit – inch consisting of :
- 1 insertion tube, multi-hole, inch, with 11
bores (incl. reference bore)
- 1 pcs. insulation plug for multi-hole, inch
(ATC-140 A/B only)
ATC-140/250 A/B only (liquid bath)
 1 liquid bath kit consisting of :
- 1 sensor basket
- 2 lids for transportation /
calibration
- 1 stirring magnet
- 1 stirring magnet remover
- 1 liquid drainage syringe
- 1 silicone oil
- 1 oil material safety data sheet
When reordering, please specify the parts number
found in the list of accessories, chapter 9.0.

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3.2 Preparing the dry-block calibrator
The ATC-B-version has a precision reference input. To achieve the
high precision, a set of sensor coefficients relating to the specific
sensor must be present in the ATC. Before use of the ATC, ensure that
the correct coefficients in the ATC are equal to those from the sensors
calibration certificate. This is done with the PC software JOFRACAL
included on the CD. Please read how to do in the chapter “Reference
Sensors” in the JOFRACAL user manual on the CD.
Warning
 The calibrator must not be used for any purposes other
than those described in this manual.
 The calibrator has been designed for interior use only
and should not be used in hazardous areas, where
vapour or gas leaks, etc. may constitute a danger of
explosion.
 The calibrator must be kept free within an area of 20
cm on all sides and 1 metre above the calibrator.
 The ATC-125 contains the gases R-1270 and R-704
under pressure. The calibrator must under no
conditions be stored or operated at ambient
temperatures above 60C (140F). Doing so may cause
a hazard.
Note…
The instrument must not be exposed to draughts.

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Fig. 1a
3.2.1 When setting up the dry-block calibrator, you must…
Place the calibrator on an even horizontal surface where you
intend to use it.
Caution…
 Do not use the instrument if the internal fan is out of
order.
Ensure a free supply of air to the internal fan located at the
bottom of the instrument.
The area around the calibrator should be free of draught, dirt,
flammable substances, etc.
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Check the voltage on 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 setting of
the power control switch as follows (see fig. 1a):
A. Open the fuse box lid using a screwdriver.
B. Take out the fuse box.
C. Remove both fuses replacing them with two new fuses.
These must be identical and should correspond to the
line voltage. See chapter 9.0.
B. Turn the fuse box 180° and slide it back 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 3.2.2 for information on how to select insertion tubes.
The calibrator is now ready for use.

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3.2.2 Choice of insertion tube
Caution…
Before using new insertion tubes for calibration, the
insertion tubes must be heated up to maximum temperature
- 250°C (482°F) / 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 ATC-320
calibrator, which have been used in the ATC-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 chapter 9.0 to find the correct part
number.
Alternatively, you may order an undrilled insertion tube and drill the
required hole yourself. The finished dimensions should be as follows:
 Sensor diameter +0.2 +0.05/-0 mm.
In order to get optimum results and preventing ice from building up in
the well of the cooling calibrators, a proper sized insulation plug must
be placed over the well during the calibration process.
The holes in the plug must have a tight fit and unused holes must be
covered using e.g. EPDM plugs (spare part no. 126280).

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3.1.3 Inserting the sensors
Before inserting the sensors and switching on the calibrator, please
note the following important warning:
Warning
 Never use heat transfer fluids such as silicone, oil,
paste, etc. in the dry-block calibrator.
These fluids may penetrate the calibrator and cause
damage or create poisonous fumes.
Insert the sensors as shown in fig. 2a.
Fig. 2a
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CALIBRATIONINSTRUMENTS
Reference sensor
(if available)
Sensor under test
Insertion tube