WIKA CTD4000 User manual

Operating instructions
Betriebsanleitung
EN
DE
Temperature dry-well calibrator, model CTD4000
Temperatur-Blockkalibrator, Typ CTD4000
Preliminary
Temperature dry-well calibrator, model CTD4000

2WIKA operating instructions, model CTD4000
14366831.01 05/2020 EN/DE
EN
DE
Operating instructions model CTD4000 Page 3 - 34
Betriebsanleitung Typ CTD4000 Seite 35 - 66
Further languages can be found at www.wika.com.
© 05/2020 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA®is a registered trademark in various countries.
WIKA®ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!

1WIKA operating instructions, model CTD4000
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Contents
Contents
1. General information 3
2. Short overview 3
2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Safety 4
3.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.4 Improper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.5 Personnel qualification. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.6 Personal protective equipment . . . . . . . . . . . . . . . . . . . . . . . . 6
3.7 Labelling, safety marks . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4. Design and function 7
4.1 Overview of the different instrument models . . . . . . . . . . . . . . . . . . . 7
4.2 Isometric views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.3 Description of the temperature controller . . . . . . . . . . . . . . . . . . . . 8
4.4 Voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.5 Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.6 Heating resistance (CTD4000-375 or CTD4000-650) . . . . . . . . . . . . . . . . 10
4.7 Temperature sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.8 Safety thermostat (CTD4000-375 or CTD4000-650). . . . . . . . . . . . . . . . . 10
4.9 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.10 Inserts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. Transport, packaging and storage 11
5.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Packaging and storage . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6. Commissioning, operation 11
6.1 Voltage supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2 Use at high temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.3 First commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.4 Operating position . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.5 Switching on the calibrator . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.6 Setting a set temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.7 Testing or calibrating temperature probes . . . . . . . . . . . . . . . . . . . . 12
6.7.1 Testing of temperature probes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.7.2 Calibrating temperature probes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.7.3 Positioning the temperature probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.7.4 Calibration with one reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.7.5 After the test or the calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.8 Switch test function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.9 Cooling down the metal block . . . . . . . . . . . . . . . . . . . . . . . . 15
7. Operating the calibrator 16
7.1 Setting a temporary set temperature (set-point mode) . . . . . . . . . . . . . . . . 16
7.2 Programming (main menu) . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3 Short description of the menu . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3.1 Menu structure, parameter levels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.3.2 First menu level - General settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

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Contents
7.3.3 Second menu level - Settings for optimising the control . . . . . . . . . . . . . . . . . . . . . . . 19
7.3.4 Third menu level - Recalibration of the instrument . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3.5 Fourth menu level - Settings of the temperature controller . . . . . . . . . . . . . . . . . . . . . . 21
8. Serial communication 22
8.1 List of the variables and parameters . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Data reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.3 Data writing (FLOAT VARIABLES) . . . . . . . . . . . . . . . . . . . . . . . 23
9. Faults 24
10.Maintenance, cleaning and recalibration 25
10.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10.3 Recalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10.3.1Calibration of the internal probe by the user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.Dismounting, return and disposal 27
11.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11.2 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.Specifications 28
13.Accessories 30
Declarations of conformity can be found online at www.wika.com.

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1. General information / 2. Short overview
2
1
3
4
5
6
7
8
■The model CTD4000 temperature dry-well calibrator
described in the operating instructions has been designed
and manufactured using state-of-the-art technology.
All components are subject to stringent quality and
environmental criteria during production. Our management
systems are certified to ISO 9001 and ISO 14001.
■These operating instructions contain important information
on handling the instrument. Working safely requires that all
safety instructions and work instructions are observed.
■Observe the relevant local accident prevention regulations
and general safety regulations for the instrument's range
of use.
■The operating instructions are part of the product and
must be kept in the immediate vicinity of the instrument
and readily accessible to skilled personnel at any time.
Pass the operating instructions on to the next operator or
owner of the instrument.
1. General information
■Skilled personnel must have carefully read and
understood the operating instructions prior to beginning
any work.
■The general terms and conditions contained in the sales
documentation shall apply.
■Subject to technical modifications.
■Factory calibrations / DKD/DAkkS calibrations are carried
out in accordance with international standards.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: CT 41.10
- Application consultant: Tel.: [phone]
Fax: [phone]
[e-mail]
2. Short overview
2.1 Overview
1Temperature block
2User interface
3RS-232 interface
4Power connection
5Main switch
6Fuse holder
7Connections for temperature switch test
8Carrying handle
2.2 Description
The calibrator has been designed for on-site applications
as well as for the harsh conditions of the naval and marine
sectors.
The thermal part of the calibrator is made of a metal block
heated/cooled with resistors or with Peltier thermoelectric
modules. In the metal block there is one bore in which the
interchangeable insert is placed.

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2. Short overview / 3. Safety
3. Safety
3.1 Explanation of symbols
WARNING!
... indicates a potentially dangerous situation
that can result in serious injury or death, if not
avoided.
CAUTION!
... indicates a potentially dangerous situation that
can result in light injuries or damage to property
or the environment, if not avoided.
DANGER!
... identifies hazards caused by electric power.
Should the safety instructions not be observed,
there is a risk of serious or fatal injury.
WARNING!
... indicates a potentially dangerous situation that
can result in burns, caused by hot surfaces or
liquids, if not avoided.
Information
... points out useful tips, recommendations
and information for efficient and trouble-free
operation.
3.2 Intended use
The model CTD4000 portable temperature dry-well calibrator
is a portable unit that has been designed for on-site
applications as well as for the harsh conditions of the naval
and marine sectors.
The temperature dry-well calibrator is intended for the
calibration of thermometers, temperature switched/
thermostats, resistance thermometers and thermocouples.
The operational safety of the delivered instruments is only
assured if the equipment is employed for its intended use
(verification of temperature sensors).The given limit values
should never be exceeded (see chapter 12 “Specifications”).
Maximum ambient conditions at place of use:
■Ambient temperature: 5 ... 45 °C [41 ... 113 °F]
■Humidity: 95 % relative humidity (non-condensing)
This instrument is not permitted to be used in hazardous
areas!
Notes for instruments with EMC and class A
This is class A equipment for emissions and is intended
for use in industrial environments. In other environments,
e.g. residential or commercial installations, it can interfere
with other equipment under certain conditions. In such
circumstances the operator is expected to take the
appropriate measures.
2.3 Scope of delivery
For model CTD4000-140 temperature dry-well calibrator
■Calibrator
■Power cord, 1.5 m [5 ft] with safety plug
■Replacement tool
■Operating instructions
■Drilled insert with 4 bores: 3.3 mm, 4.8 mm and
2 x 6.4 mm [0.13 in, 0.19 in and 2 x 0.25 in]
For model CTD4000-375 temperature dry-well calibrator
■Calibrator
■Power cord, 1.5 m [5 ft] with safety plug
■Replacement tool
■Operating instructions
■Drilled insert with 4 bores: 3.2 mm, 4.8 mm, 6.4 mm and
11.1 mm [0.13 in, 0.19 in, 0.25 in and 0.44 in]
For model CTD4000-650 temperature dry-well calibrator
■Calibrator
■Power cord, 1.5 m [5 ft] with safety plug
■Replacement tool
■Operating instructions
■Drilled insert with 4 bores: 3.2 mm, 5 mm, 7 mm and
10.5 mm [0.13 in, 0.2 in, 0.28 in and 0.41 in]
Cross-check scope of delivery with delivery note.

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3. Safety
The instrument has been designed and built solely for
the intended use described here, and may only be used
accordingly.
The technical specifications contained in these operating
instructions must be observed. Improper handling or
operation of the instrument outside of its technical
specifications requires the instrument to be taken out of
service immediately and inspected by an authorised WIKA
service engineer.
Handle electronic precision measuring instruments with
the required care (protect from humidity, impacts, strong
magnetic fields, static electricity and extreme temperatures,
do not insert any objects into the instrument or its openings).
Plugs and sockets must be protected from contamination.
The manufacturer shall not be liable for claims of any type
based on operation contrary to the intended use.
3.3 Improper use
WARNING!
Injuries through improper use
Improper use of the instrument can lead to
hazardous situations and injuries or damage to
property.
▶Refrain from unauthorised modifications to
the instrument.
▶Do not use the instrument within hazardous
areas.
▶Do not use the instrument with abrasive or
viscous media.
▶Only ever use the power cord supplied.
▶Observe the operating parameters in
accordance with chapter 12 “Specifications”.
To avoid injuries or damage to property observe further
points:
Temperature dry-well calibrator
■Only operate the calibrator in a defect-free, functioning
condition.
■Faultless and safe operation of this calibrator requires
proper transport, professional storage, installation,
mounting and use as intended in addition to careful
operation and maintenance.
■The calibrator has been designed as a controller. With
any operation of the calibrator not expressly provided
for in these operating instructions, additional protective
measures must be taken.
■The electronic µ processor is factory configured so that all
technical specifications are maintained.These parameters
must not be changed, above all to prevent malfunction or
failure which could lead to damage.
■Keep clear the area around the calibrator on all sides and
especially behind the calibrator.
■Do not put anything on the top of the calibrator.
■Only carry out maintenance on the calibrator when it has
cooled down and been switched off.
■Before switching off, ensure that the calibrator has
cooled to room temperature (CTD4000-140) or < 100 °C
(CTD4000-375/CTD4000-650).
■The calibrator must only be stored in the carrying case
once it has cooled down.
■Do not switch off the calibrator when it is operating at high
temperature because the protective grille and the case
may overheat.
■Do not use any oil or liquids since these can lead to
damage of the calibrator.
■Do not put any fuel containers near the calibrator.
Voltage supply
■The mains socket must be freely accessible at all times!
■Ensure that the female connector, when connected to the
voltage supply, is properly grounded.
■With the following points, the temperature dry-well
calibrator must be disconnected by unplugging the power
cord from the mains socket.
▶Before exchanging the fuse
▶Before cleaning
▶Before service/maintenance
▶In the event of danger
Interface
Do not connect any voltage to the RS-232 input.
Fuse
Remove the fuse from the calibrator only when the power
connection has been disconnected from the mains.
Temperature switch test
■Do not connect any voltage to the switch test connection.
■Do not connect any voltage during the test of the
thermostats.
Any use beyond or different to the intended use is considered
as improper use.
Do not use this instrument in safety or emergency stop
devices.

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3. Safety
3.4 Personnel qualification
WARNING!
Risk of injury should qualification be
insufficient!
Improper handling can result in considerable
injury and damage to property.
▶The activities described in these operating
instructions may only be carried out by
skilled personnel who have the qualifications
described below.
Skilled personnel
Skilled personnel, authorised by the operator, are understood
to be personnel who, based on their technical training,
knowledge of measurement and control technology and
on their experience and knowledge of country-specific
regulations, current standards and directives, are capable
of carrying out the work described and independently
recognising potential hazards.
Special operating conditions require further appropriate
knowledge, e.g. of aggressive media.
3.5 Personal protective equipment
The personal protective equipment is designed to protect the
skilled personnel from hazards that could impair their safety
or health during work.When carrying out the various tasks
on and with the instrument, the skilled personnel must wear
personal protective equipment.
Follow the instructions displayed in the work area
regarding personal protective equipment!
The requisite personal protective equipment must be
provided by the operating company.
Wear protective gloves!
Protect hands from contact with hot surfaces and
aggressive media.
3.6 Labelling, safety marks
The operator is obliged to maintain the product label in a
legible condition.
Product label (example)
The product label is fixed on the rear of the instrument.
1Model designation
2Frequency in Hz
3Power in W
4Operating voltage
Explanation of symbols
Before mounting and commissioning the
instrument, ensure you read the operating
instructions!
Do not dispose of with household waste. Ensure
a proper disposal in accordance with national
regulations.
2
3
1
4
Mod.
Matr.
Hz
W
V
bar
WIKA Alexander Wiegand
SE & Co. KG
Alexander-Wiegand Str.30
63911 Klingenberg
Germany
www.wika.de

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4. Design and function
4.1 Overview of the different instrument models
■CTD4000-140 (cooling and heating)
■CTD4000-375 (heating)
■CTD4000-650 (heating)
The temperature dry-well calibrator consists of a robust,
grey-painted steel case, with a carrying handle on top.
The rear part of the case contains a metal block with a
19 x 150 mm or 26 x 150 mm bore in which the inserts can
be placed.
With the help of the inserts temperature probes of different
sizes can then be calibrated.
The heater element heats the block and an electronic µ
controller with static relay output checks and regulates the
temperature.
The metal block is thermally insulated.
A centrally mounted fan generates a constant air flow that
reduces the temperature of the case.
The air flow is divided in two parts: One part of the air flows
from the back of the calibrator, while the second part of the
flow is parallel to the top grid of the calibrator.Thus, the
stem of the sensor is above the insert at the lowest possible
temperature.
The front part of the case contains the complete electronic
unit for controlling the reference temperature.
To control the heating elements, solid-state relays (SSRs) are
used.
On the front panel is the controller, which is fitted with an LED
display (2-line) for the reference and set temperature.
The calibrator is fitted with the following
protective devices to prevent hazards in
operation.
■Temperature controller that recognises any
possible break in the temperature sensor and
disconnects the heating
■Maximum temperature safety thermostat to
disconnect the heating system
■Protective grille to prevent any contact with
the metal block
■Protective fuses
4. Design and function
4.2 Isometric views
Front and top
On the top of the temperature dry-well calibrator, you will find
the dry well access opening for inserting the insert.
The controller, with display and controls, is located on the
front of the calibrator.
The temperature switch test is found through the indicator.
In the lower area are the mains connector socket and the
power switch with its fuse holder.
Furthermore, the mains voltage and the fuse rating is given.
On the right hand side, next to the power connection is
located the RS-232 interface.
Rear of the instrument
On the rear of the case are located the product label and the
fan.
This must not be obstructed in any way!
1Temperature block with insert
2Fan
3Product label
4RS-232 interface
5Mains connector socket with power switch and fuse
6Temperature controller
7Temperature switch test
8Carrying handle, retractable
8
7
6
5
4
3
2
1

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4. Design and function
1Connections for temperature switch test
For further information, see chapter 6.8 “Switch test
function”.
2Switch test LED
Lights up when the temperature switch contact is
closed.
3Display 1
Displays the value of the actual temperature or the
value of the function selected.
4Stability LED
When the LED is flashing, the temperature is stable.
5Display 2
Set temperature display
The parameters are displayed in the function menu.
6Switch test
When the LED is flashing, the function is active.
7Button [E]
Confirms the selected values or the selected function.
8Button [▼]
Lowers the value which is shown on display 1 or
display 2.
By holding the [▼] button down, the speed is
increased.
9Button [▲]
Increases the value which is shown on display 1 or
display 2.
By holding the [▲] button down, the speed is
increased.
10 Function menu button [F]
By pressing both the [F] and [▲] buttons at the same
time, the 2nd level menu is accessed.
With the [F] button, the function is called up and can
be browsed in the menu level.
11 Heating LED
Lights up when the calibrator is heating.
12 Cooling LED
Lights up when the calibrator is cooling.
Controls
Overview of the operating elements of the temperature controller
12
89 710
2
4
3
6
5
1
11
4.3 Description of the temperature controller
The temperature controller is a PID microprocessor, which
can be set from -30 ... 140 °C, 0 ... 375 °C and 0 ... 650 °C
[-22 ... 284 °F, 32 ... 707 °F or 32 ... 1,202 °F]. The display
indicates the current temperature and the set point.

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4. Design and function
4.4 Voltage supply
13 Information about the calibrator
14 Main switch
15 Fuse
16 Power connection
17 RS-232 interface
For further information, see chapter 8 “Serial
communication”.
Voltage supply for CTD4000-140
The CTD4000-140 calibrator operates with an operating
voltage of AC 100 ... 240 V, 50/60 Hz.
Voltage supply for CTD4000-375 and CTD4000-650
The calibrator runs on a voltage of AC 230 V or AC 115 V,
50/60 Hz.
The calibrator automatically sets the supply voltage to a
voltage of AC 115 V or AC 230 V.
The instruments can be supplied with voltage of AC 115 V or
AC 230 V (50/60 Hz).
The fuse must be changed, if the supply voltage changes
from AC 230 V to AC 115 V.
Voltage Fuse
AC 230 V 3.15 A (factory delivery)
AC 115 V 6.3 A (included in standard scope of delivery, in
a bag)
For both calibrators, in total 4 fuses are included in the
standard scope of delivery. One is already built-in; the
remaining are placed in labelled plastic bags.
13 14 15 16 17
4.5 Fuse
The calibrators are fitted with the following fuses, in
accordance with the table:
Operating
voltage CTD4000-140 CTD4000-375 CTD4000-650
AC 100 ... 240 V 2.5 A slow blow
fuse
-
AC 100/115 V - 6.3 A slow blow
fuse
AC 230 V - 3.15 A slow blow
fuse
Only use type F 5 x 20 mm fuses. All the
electrical components are found below the main
switch.
Changing of the fuse
1. Open the fuse container, using a screwdriver for example,
and pull it out.
⇒
2. Remove the fuse from the clamp.
3. Place new fuse into the clamp.

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4. Design and function
4. Insert the clamp into the fuse container.
⇒
5. Press in the fuse container fully.
4.6 Heating resistance (CTD4000-375 or CTD4000-650)
The resistance is made from stainless steel; the max power
is 630 W and it can become very hot.
The use of the calibrator at continuous high
temperatures reduces the service life of the
resistor. Limit the number of hours at which the
resistance is used at maximum temperatures
to the time required by the calibrator in order to
prolong the life of the resistance.
The equalising block has an opening of 26 mm into which
the inserts for almost any temperature probe size can be
inserted. The function of this block is to make the temperature
in the calibration zone uniform.
The bores are dependent on the temperature probes.
For further information, see 6.7 “Testing or calibrating
temperature probes”.Through this, any problems, which
might arise if the wrong tolerances are used, will be avoided.
4.7 Temperature sensors
The temperature sensor used for the reading and
thermoregulation is inserted directly into the equalising block
to display the real temperature value.
4.8 Safety thermostat (CTD4000-375 or CTD4000-650)
The calibrator is fitted with a thermal fuse for the highest
temperature, which has a manual reset button. The thermal
fuse switches off the heating system as soon as there is an
error.
If Ht is showing on the display means, that the temperature
has exceeded the upper limit.
If Ht is on the display:
1. Cool the temperature calibrator
⇒The temperature must fall to at least 60 ... 80 °C
[140 ... 176 °F] under the high set value (standard).
2. Switch off the calibrator then switch on again a few
second later.
The thermostat has been factory set to 660 °C
±10 °C [1,220 °F ±10 °F] with the CTD4000-650
and to 385 °C ±10 °C [725 °F ±10 °F] with the
CTD4000-375.
If the problem persists, disconnect the calibrator from the
voltage supply and rectify the possible fault.
4.9 Fan
A fan is installed in the calibrator. The fan works with two
different speeds: the control system switches on the fan
at minimum speed with increasing temperature, and at
maximum speed for decreasing the temperature. The fan
keeps the case of the calibrator at a low temperature when
the temperature increases and assist the cooling process.
Every hole at the bottom and at the back of
CTD4000 must be kept free in order to let the air
flow properly.
4.10 Inserts
In order to achieve the greatest possible accuracy, the use of
exactly matched inserts is necessary. For this, the diameter
of the test item must be accurately determined.The bore for
the insert is obtained by adding approx. +1 mm [+0.04 in],
depending on the temperature range.
Following use, the inserts should be removed
using the replacement tools and then the insert
and block should be cleaned.This prevents the
sleeves becoming jammed in the heating block.

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5. Transport, packaging and storage
5. Transport, packaging and storage
5.1 Transport
Check the temperature dry-well calibrator for any damage
that may have been caused by transport.
Obvious damage must be reported immediately.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage
to property can occur.
▶When unloading packed goods upon delivery
as well as during internal transport, proceed
carefully and observe the symbols on the
packaging.
▶With internal transport, observe the
instructions in chapter 5.2 “Packaging and
storage”.
If the instrument is transported from a cold into a warm
environment, the formation of condensation may result
in instrument malfunction. Before putting it back into
operation, wait for the instrument temperature and the room
temperature to equalise.
5.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection
during transport (e.g. change in installation site, sending for
repair).
Permissible conditions at the place of storage:
■Storage temperature: -10 ... +60 °C [14 ... 140 °F]
■Humidity: 30 ... 95 % relative humidity (non-condensing)
Avoid exposure to the following factors:
■Direct sunlight or proximity to hot objects
■Mechanical vibration, mechanical shock (putting it down
hard)
■Soot, vapour, dust and corrosive gases
■Hazardous environments, flammable atmospheres
Store the temperature dry-well calibrator in its original
packaging in a location that fulfils the conditions listed above.
6. Commissioning, operation
Personnel: Skilled personnel
Protective equipment: Protective gloves
Only use original parts (see chapter 13 “Accessories”).
WARNING!
Physical injuries and damage to property
and the environment caused by hazardous
media
Upon contact with hazardous media (e.g. with
flammable or toxic substances) and also harmful
media (e.g. corrosive, toxic, carcinogenic,
radioactive), there is a danger of physical injuries
and damage to property and the environment.
Should a failure occur, aggressive media and/
or with high temperature may be present at the
instrument.
▶For these media, in addition to all standard
regulations, the appropriate existing codes or
regulations must also be followed.
▶Wear the requisite protective equipment (see
chapter 3.5 “Personal protective equipment”").
6.1 Voltage supply
DANGER!
Danger to life caused by electric current
Upon contact with live parts, there is a direct
danger to life.
▶Only ever use the supplied power cord (see
chapter 4.4 “Voltage supply”).
▶Ensure that the correct operating voltage is
present when doing this.
6.2 Use at high temperatures
WARNING!
Fire hazard!
The calibrator is suitable for operating at high
temperatures with the consequent danger of fire.
▶Keep inflammable material away.
▶Do not pour any liquids into the interior of the
block.

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6. Commissioning, operation
6.3 First commissioning
To avoid any smell in the room it is better to switch on the
calibrator outside the room for the first time.
6.4 Operating position
The operating position of the temperature dry-well calibrator
is in the vertical orientation, since this guarantees an optimal
temperature distribution in the metal block.
▶Place the temperature dry-well calibrator on a clean and
even surface so that the fan on the bottom is not blocked
and sufficient fresh air can be drawn in.
Insufficient ventilation can lead to damage to
the calibrator. Therefore, make sure that there is
enough space around the temperature dry-well
calibrator and that the air can circulate.
6.5 Switching on the calibrator
1. Connect to the mains using the mains connector supplied.
⇒Ensure that the correct voltage is present when doing
this.
⇒Make sure that the instrument has been correctly
grounded.
2. Switch on the mains switch.
The controller will be initialised. After approx. 5 secs, the
initialisation will be complete and the calibration mode will
automatically be displayed.
The lower display will show Stby.
6.6 Setting a set temperature
1. Insert the insert into the equalising block
⇒Make sure that it does not get caught.
2. Insert the thermometer to be tested into the sleeve.
⇒Here, also ensure that this doesn't get caught.
3. With the [▲] or [▼] button, enter the set point.
4. Confirm the entry with the [E] button.
The built-in heating or cooling elements will temper the metal
block automatically from room temperature to the controller's
set temperature.
If the temperature has stabilised, this will be shown by the
STABILITY-LED blinking in the lower right of display 1.
6.7 Testing or calibrating temperature probes
WARNING!
Risk of burns!
Touching the hot metal block or the test item can
lead to acute burns.
▶During the use of the calibrator, do not touch
the upper grille, the inserts or temperature
probes because they may be very hot.
6.7.1 Testing of temperature probes
To test temperature probes, connect a separate temperature
measuring instrument to the test item. By comparing the
temperature displayed on the external measuring instrument
with the reference temperature, there is evidence of the
status of the test item. Here, pay attention to the fact that the
test item requires a short time until it reaches the temperature
of the metal block.
At the end of the test, DO NOT remove the probe while it is
still at high temperature. First. cool the calibrator while the
probes are still inserted, see chapter 6.9 “Cooling down the
metal block”.
Before returning the calibrator to its case make sure that,
the temperature of the block is almost the same as ambient
temperature.
6.7.2 Calibrating temperature probes
Calibrations with a temperature dry-well calibrator can be
performed with the internal reference of the calibrator. Should
a better accuracy need to be achieved, working with an
external reference is required.With the second option the
external reference and the test item should be located on the
same height and near together.
6.7.3 Positioning the temperature probe
Insert the temperature probe, together with the matching
insert, into the temperature dry-well calibrator.
The insert is manufactured from aluminium or brass and has
one or more holes so that a large number of temperature
probes can be calibrated in this insert.This insert has the
function of distributing the temperature evenly.
It is therefore also possible to calibrate temperature probes
with different lengths so long as the depth of the holes has
been adjusted.
▶After setting up the calibrator, insert the insert carefully
into the holder.
⇒Ensure that no dirt or other foreign materials can get
between the block and the insert.

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6. Commissioning, operation
The insert replacement tool is a curved pair of pliers that can
be hooked into the holes provided in the top of the insert. The
insert must be aligned in such a way, so that the grooves sit
directly over the controlling and monitoring thermometers.
In order to achieve the best result from the calibration, the
following points must be observed:
■Diameter of the temperature probe being checked
■The bore diameter of the insert should be larger than the
that of the temperature probe to be calibrated
Max.
temperature Probe diameter Tolerances of the bores
600 °C 4.5 ... 8 mm 0.5 mm
600 °C 8 ... 12 mm 0.7 mm
600 °C 12 ... 17 mm 1 mm
< 300 °C 4.5 ... 14 mm 0.3 mm
If this is not possible, use reducing blocks with the above-
mentioned tolerances (see figure 1).
Figure 1
▶Avoid using bores which are too accurate and do not
press the temperature probes into the block.
▶Clean the block and the insert before use.
▶Only insert the temperature probe or the insert into the
block at ambient temperature using the insert replacement
tool.
> 0.5
Yes
Yes
Reducing
block
No
No
The sensitive element of the temperature probe is oriented
optimally when it sits on the bottom (see figure 2).
Figure 2
6.7.4 Calibration with one reference
If the length of the temperature probe is shorter than the
depth of the bore, then the reference should also be placed
at the height of the test item.
Further preconditions for the calibration of references:
■The maximum temperature of the temperature probe
should be higher than the temperature of the calibrator,
otherwise the temperature probe could be destroyed.
■Insert the test item into the insert before reaching the
target temperature, otherwise instabilities and sensor
break could result.
■Both temperature probes must be as close to each other
as possible (see figure 3).
Figure 3
YesNo
190
40
140
90
Reference probe
Reference probe
Calibration zone
Calibration zone

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6. Commissioning, operation
The temperature difference is proportional to the
diameter of the test item and the diameter of the
bore in the insert.
The time the probes take to reach the set point is
much higher as the difference in diameter from
the probes and the holes is bigger.
6.7.5 After the test or the calibration
WARNING!
Risk of burns!
High temperatures can lead to acute burns.
At the end of the calibration, do not pulled out
the temperature probe from the calibrator at high
temperatures.
▶Cool down the calibrator, including the
temperature probe, so that thermal shock
is prevented, as described in chapter 6.9
“Cooling down the metal block”.
▶Before the calibrator is switched off, check
whether the temperature is almost the same
as the ambient temperature.
1. With the [▲] or [▼] button, enter the room temperature.
2. Confirm the entry with the [E] button.
Remove the insert from the calibrator after the use. Humidity
may cause verdigris to build up on the inside of the insert
within the metal block
⇒In this case, the insert can become stuck.
6.8 Switch test function
With the "SWITCH TEST" function, it is possible to control
the open and close temperature of the thermostat:
1. Insert the thermostat sensor into a suitable bore in the
insert.
2. Connect the thermostat to the switch test input.
3. Switch on instrument.
4. With the [▲] or [▼] button, enter the set point, which
corresponds to Tmin.
5. Confirm the entry with the [E] button.
6. With the [F] button, select the function SEt2.
7. With the [▲] or [▼] button, enter the set point Tmax.
8. Confirm the entry with the [E] button.
⇒The temperature of the thermostat switch should be
between Tmin and Tmax.
9. With the [F] button, call the Grd (degrees per minute)
function.
10. With the [▲] or [▼] button, enter the value for the heating
rate of change.
⇒Low values are preferable for a more accurate test
(e.g. values less than 1 °C per minute).
11. Confirm the entry with the [E] button.
The switch test LED will indicate the status of the switch:
The LED is lit = LED ON with switch closed

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6. Commissioning, operation
The LED isn't lit = LED OFF with switch open
1. With the [F] button, select the function run.
2. With the [▲] or [▼] button, set to ON.
When the LED in this function flashes, this indicates that the
process is active.
■The thermostat’s release values are recorded in the
parameters SOn and SOFF.
■Temperature runs between Tmax and Tmin until the
function is switched off. The SOn and SOFF values are
continuously updated during each run.
■By entering run OFF, the switch test is ended.
6.9 Cooling down the metal block
WARNING!
Risk of burns!
High temperatures at the metal block or at the
temperature probe can lead to acute burns.
▶Before transporting or touching the metal
block and/or calibration instruments, make
sure that they have cooled down sufficiently.
▶In order that the calibration instruments can
be brought quickly from a higher to a lower
temperature, set the set temperature to a
lower temperature (e.g. room temperature).
▶In order to cool down the metal block, set the
set temperature to a low temperature, e.g.
room temperature.
1. With the [▲] or [▼] button, enter the room temperature.
2. Confirm the entry with the [E] button.
The installed fan gently and automatically switches to a
higher speed thus providing more cooling air.
After switching off or removing the mains
connection, no cooling air will be provided by
the built-in ventilator. If the voltage supply is
interrupted during the cooling process, sufficient
thermal decoupling is still guaranteed between
the metal block and the case.

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7. Operating the calibrator
7. Operating the calibrator
7.1 Setting a temporary set temperature (set-point
mode)
Setting the set temperature:
■Pressing the [▲] button increases the set point.
■Pressing the [▼] button lowers the set point.
■The button [E] confirms the entry.
Before each calibration, you must wait until a stable set point
is reached.
7.2 Programming (main menu)
All the settings can be carried out in this menu structure.
1. Press button [F].
⇒This opens the main menu.
2. With the button [F] select the desired entry in the main
menu (see overview).
3. Confirm the entry with the [E] button.
7.3 Short description of the menu
The calibrator has four menu levels:
■First menu level: General settings
■Second menu level: Settings for optimising the control
■Third menu level: Recalibration of the instrument
■Fourth menu level: Settings of the temperature controller

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7. Operating the calibrator
7.3.1 Menu structure, parameter levels
Menu structure
ENEW VALUE
F
F
F
F
F
F
ENEW VALUE
ENEW VALUE
ENEW VALUE
ECode = 2
td
VALUE
dEG
VALUE
dEF
VALUE
CodE
VALUE
VALUE
Pb
F+
ENEW VALUE
or
or
or
or
or
or
VALUE
ti
F+
F+
ENEW VALUE
ENEW VALUE
ENEW VALUE
ENEW VALUE
or
or
or
or
F
F
F
F
F
CLOSING THERMOSTAT
TEMPERATURE
(IF CONNECTED)
LEVEL 1 LEVEL 2
F+
ENEW VALUE
F
F
F
F
F
Eon / off
ENEW VALUE
or
or
or
LEVEL 3 LEVEL 4
ENEW VALUE
F
F
F
F
Code = 3
E
clt
tbl
ENEW VALUE
or
or
or
Clearing
Table
F+ F+
TEMPERATURE VALUE
SET POINT
2
1
CodE
VALUE
SEtH
VALUE
Pc
VALUE
SOFF
VALUE
SOn
VALUE
run
VALUE
Grd
VALUE
SEt2
VALUE
Cod2
VALUE
Cod1
VALUE
Stby
VALUE
Hy
VALUE
tSEt
VALUE

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7. Operating the calibrator
7.3.2 First menu level - General settings
▶By pressing the [F] button, menu level 1 is accessed.
▶With the [F] button, the menu functions can be scrolled through.
Function Meaning
SP Set point
Setting the set temperature.
1. With the [▲] or [▼] button, set the set point.
2. Confirm the entry with the [E] button.
SEt2 Set point 2
Setting of set temperature 2, which the calibrator should approach with a certain gradient within a ramp.
1. With the [▲] or [▼] button, set the set point 2.
2. Confirm the entry with the [E] button.
The value of SEt2 must be always higher than SP.
Grd Gradient
Heating or cooling change rate during the change of the temperature value SP to SEt2 or SEt2 to SP.
1. With the [▲] or [▼] button, set the gradient.
2. Confirm the entry with the [E] button.
The gradient must be smaller than the maximum specified value in the technical specifications (max.
15 °C/min).
run Switch test
1. With the [▲] or [▼] button, select ON or OFF.
2. With the [E] button, start or stop the switch test.
The temperature dry-well calibrator reaches temperature SP2 from SP with the selected heating rate of
change.The basis is the same temperature with which the ramp was confirmed. If the value of SP2 is lower
than the SP, the calibrator will not accept the run and the instrument will display “Err”. The LED will flash to
indicate that the function is active. The set point will change the value following the selected slope rate.When
the internal temperature reaches the SEt2 set point, the internal temperature will decrease with the cooling
slope rate; the SP value will be considered as the new set point. During the ramp program, the derivative
parameter will not be considered. During the ramp program, the LED on the right of the set point flashes and
the set point increases or decreases the value.