Kobold HND-T205 User manual

Operating Instructions
for
Precision Hand-Held Thermometer
Model: HND-T205

HND-T205
page 2 HND-T205 K05/0422
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
6.Electrical Connection .................................................................................... 4
6.1Mains Operation .................................................................................. 4
7.Operation ...................................................................................................... 5
7.1Safety Instructions ............................................................................... 5
7.2Connections ......................................................................................... 6
7.3Display Elements ................................................................................. 6
7.4Pushbuttons ......................................................................................... 7
7.5Device Configuration ........................................................................... 7
7.6Special Functions ................................................................................ 9
7.7Probe connection ............................................................................... 12
7.8Operation of Logger ........................................................................... 13
7.9Some Basics of Precision Temperature Measuring ........................... 15
7.10Fault and System Messages .............................................................. 17
7.11Calibration Services ........................................................................... 17
8.Maintenance ............................................................................................... 18
9.Technical Information .................................................................................. 18
10.Order Codes ............................................................................................... 19
10.1PT100-measuring probe Class B ....................................................... 20
10.2Accessories ....................................................................................... 21
11.EU Declaration of Conformance ................................................................. 22
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

HND-T205
HND-T205 K05/0422 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
3. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Precision Hand-Held Thermometer model: HND-T205
4. Regulation Use
Any use of the Precision Hand-Held Thermometer, model: HND-T205, which
exceeds the manufacturer’s specification, may invalidate its warranty. Therefore,
any resulting damage is not the responsibility of the manufacturer. The user
assumes all risk for such usage.

HND-T205
page 4 HND-T205 K05/0422
5. Operating Principle
The KOBOLD hand-held temperature measuring units HND-T205 are highly
precise, compact thermometers for PT100 4-wire-probes that can be used
universally. The high degree of accuracy of these housings makes them
extremely well suited for all calibration tasks. In conjunction with the appropriate
temperature probes, precise measurement results over the entire measuring
range can be achieved. Various probes are available for a multitude of measuring
tasks and special applications. The respective measurement task determines
which combination is selected. Naturally, these first-rate KOBOLD-measuring
units can display more than just the temperature values. All housings in this
series allow for minimum/maximum value memory, hold function, automatic self-
shut-off, and zero point/increase entry, for example.
6. Electrical Connection
6.1 Mains Operation
Attention: When using a power supply unit please note that
operating voltage has to be 10.5 to 12 VDC. Do not apply
overvoltage!! Simple 12 V-power supplies often have excessive
no-load voltage. We, therefore, recommend using regulated
voltage power supplies. Trouble-free operation is guaranteed by
our power supply HND-Z002.
Prior to connecting the plug power supply with the mains supply
make sure that the operating voltage stated at the power supply
is identical to the mains voltage.
 Treat device and probes carefully. Use only in accordance with above
specification. (do not throw, hit against etc.). Protect plugs and sockets from
soiling.
 To disconnect sensor plug do not pull at the cable but at the plug. When
connecting the probe, the plug will slide in smoothly if plug is entered correctly.
 Selection of Output-Mode: The output can be used as serial interface or as
analogue output. This choice has to be done in the configuration menu.

HND-T205
HND-T205 K05/0422 page 5
7. Operation
7.1 Safety Instructions
This device has been designed and tested in accordance to the safety regulations
for electronic devices. However, its trouble-free operation and reliability cannot be
guaranteed unless the standard safety measures and special safety advises
given in this manual will be adhered to when using it.
1. Trouble-free operation and reliability of the device can only be guaranteed
if it is no subjected to any other climatic conditions than those stated under
“Technical Information”.
2. Transporting the device from a cold to a warm environment condensation
may result in a failure of the function. In such a case make sure the device
temperature has adjusted to the ambient temperature before trying a new
start-up.
3. The circuitry has to be designed most carefully, especially if the device
should be connected to other devices. Internal connection in third party
devices (e.g. connection GND and earth) may result in not-permissible
voltages impairing or destroying the device or another device connected.
Warning: Operation the device with a defective mains power supply (e.g.
short circuit from mains voltage to output voltage) may result in hazardous
voltages at the device (e.g. at sensor socket)
4. Whenever there may be a risk whatsoever involved running it, the device
has to be switched off immediately and to be marked accordingly to avoid
re-starting. Operator safety may be a risk if:
 there is visible damage to the device
 the device is not working as specified
 the device has been stored under unsuitable conditions for a longer
time
In case of doubt, please return device to manufacturer for repair or
maintenance.
Warning: Do not use this product as safety or emergency stop device
or in any other application where failure of the product could result
in personal injury or material damage. Failure to comply with these
instructions could result in death or serious injury and material
damage

HND-T205
page 6 HND-T205 K05/0422
7.2 Connections
1. Output: Operation as interface: Connect to optically isolated
interface adapter (accessory: HND-Z031)
Operation as analogue output: Connection via suitable cable.
Attention: The output mode has to be configured (p.r.t. 7.6.6)
and influences batter
y
life!
2. Probe connection Pt100 4-wire
The mains socket is located at the left side of the instrument
7.3 Display Elements

HND-T205
HND-T205 K05/0422 page 7
7.4 Pushbuttons
Key 1: On/Off
Key 2:
Press shortly: maximum measured value will be displayed
Press for 2 sec.: the max. value will be deleted
Key 3:
Function only during configuration: selection of parameter
Key 4:
Press (Menu) for 2 sec.: configuration will be activated (p.r.t. chapter 7.5)
Key 5:
Press shortly: minimum measured value will be displayed
Press for 2 sec.: the min. Value will be deleted
Key 6:
Measurement: Hold current measuring value (‘HLD’ in display) or operation
of logger functions (p.r.t. chapter 7.8)
7.5 Device Configuration
Note: Some menu items will be shown depending on the actual
device configuration (e.g. there are some items disabled when the
logger contains data). Please note the hints by the menu items.
Enter
configuration:
Press for 2
sec. The main
menu will be
shown
or
Navigation:
Choose menu branch (*1)
Choose the parameter (*2)
Edit the parameter values. (*2)
Stores the settings, jumps back to the main menu
Stores the sttings, leaves configuration

HND-T205
page 8 HND-T205 K05/0422
Menu Paramete
r
Values Meaning
key
Menu
keykey or  p.r.t.
Set Configuration: Generic Settings
°C:
A
ll temperature values are in de
g
rees Celsius *
°F:
A
ll temperature values are in de
g
rees Fahrenhei
t
0.1°: Resolution 0.1 °C * 7.6.1
0.01°: Resolution 0.01 °C
Auto: Resolution is selected automaticall
y
E.751 Measurin
g
/ sensor curve accordin
g
to EN60751 * 7.6.2
USEr User sensor curve (Predefined to EN60751 values, changeable
b
y
software
)
-2.50 °C..2.50 °C
resp.
-4.50 °F...4.50 °F
The zero point of the measurement will be displaced by this value
to compensate for deviations in the probe or in the measuring
device.
*7.6.3
oFF: Zero displacement inactive
(
=0.0°
)
-2.000...2.000: The scale of the measuring will be changed by this factor (in %)
to compensate deviations of temperature probe or measuring
device
*7.6.4
oFF: Scale correction factor inactive
(
=0.000
)
1...30:
A
vera
g
e filter
(
period in seconds
)
7.6.5
oFF: Average filter inactive 7.6.5
1...120 Power-off delay in minutes.
Device will be automatically switched off as soon as this time has
elapsed if no key is pressed/no interface communication takes
place
.
oFF Power-off function inactive (continuous operation, e.g. mains
operation
)
oFF: Function of the output: No output function, lowest power
consumption
7.6.6
SEr: Output is serial interface
dAC: Output is analo
g
ue output 0...1 V
01,11..91 Base Address when Output = Serial Interface :
Base address of device for interface communication.
7.6.6
-200.0...850.0 °C
resp.
-328.0...1562.0 °F
Enter desired temperature value at which the analogue output
potential should be 0 V
7.6.6
-200.0...850.0 °C
resp.
-328.0...1562.0 °F
Enter desired temperature value at which the analogue output
potential should be 1 V
7.6.6
Set Alarm: Settin
g
s Of Alarm Function
on
A
larm on, with horn-sound 7.6.8
no.So
A
larm on, without horn-sound
oFF no alarm function
min range
...AL.Hi
Min alarm rail (not when AL. oFF) 7-6.8
AL.Lo
...max ran
g
e
Max alarm rail (not when AL. oFF) 7.6.8
Set Lo
gg
er: Confi
g
uration Of Lo
gg
er Function *
CYCL C
y
clic: lo
gg
er function ‚c
y
clic lo
gg
er‘ * 7.8
Sto
r
Store: lo
gg
er function ‚individual value lo
gg
er‘
oFF no lo
gg
er function
0:01..60:00 Cycle time of cyclic logger [minutes:seconds] * 7.8

HND-T205
HND-T205 K05/0422 page 9
Set Clock: Setting Of Real Time Clock
HH:MM Clock: Setting of time hours:minutes 7.6.9
YYYY Year
TT.MM Date: day.month
(*) If the logger memory contains data already, the menus/parameters marked
with (*) can not be invoked! If these should be altered the logger memory
has to be cleared before!
Hint: The settings will be set to the settings ex works, if keys ‘Set‘ and
‘Store‘ are pressed simultaneously for more than 2 seconds.
7.6 Special Functions
7.6.1 Display Resolution
Standard setting: 'Auto', i.e. the device automatically switches over to the
optimum resolution between .01° and 0.01°.
If temperatures to be measured are near the switching threshold, a fixed
resolution may be better, e.g. for easy recording. In such a case please select the
optimum resolution manually.
7.6.2 User Sensor Curve ('Lin USEr')
By means of this function besides the standard conversion of resistance to
temperature following EN60751 (Lin E.751) also other curves can be used. The
user sensor curve can be read and edited by configuration software. The
standard setting ex works is also set to the EN60751 data. The curve is defined
by a table with two columns (input resistance [Ohm]/output temperature [°C]) with
50 rows.
Info: the sensor curve following EN60751 uses the international temperature
scale ITS90 and following formulas:
Temperatures < 0 °C: Rneg(T) := 100 ꞏ [1 + 3.9083ꞏ10-3ꞏT – 5.775ꞏ10-7ꞏT2 –
4.183ꞏ10-12ꞏ(T – 100)ꞏT3]
Temperatures >= 0 °C: Rpos(T) := 100 ꞏ (1 + 3.9083ꞏ10-3ꞏT – 5.775ꞏ10-7ꞏT2)
Please notice: temperature measurements with the user sensor curve are
allowed only within the temperature range which has been used to generate the
user sensor curve. Temperature measurements with an user sensor curve
beyond the checked temperature range can possibly lead to tremendous errors.
Therefore, the sensor curve due to DIN EN 60751 (display: Lin E.751) has to be
used for temperature measurements beyond the checked temperature range.

HND-T205
page 10 HND-T205 K05/0422
7.6.3 Zero Displacement ('Offset')
A zero displacement can be carried out for the measured temperature:
temperature displayed = temperature measured - offset
Standard setting: 'off' = 0.0°, i.e. no zero displacement will be carried out.
Together with the scale correction (see below) this factor is mainly used to
compensate for sensor deviations. Unless the factor is set to 'off', the offset arrow
in the display shows an active zero displacement.*)
7.6.4 Scale Correction ('Scale')
The scale of the measuring can be influenced by this setting (factor is in %):
displayed temperature[°C] = measured temperature[°C] * (1+Scal/100)
respectively displayed temperature[°F] = (measured temperature [°F]-32 °F)
* (1+Scal/100) + 32 °F
Standard setting: 'off' =0.000, i.e. temperature is not corrected. Together with the
zero displacement (see above) this factor is mainly used to compensate for
sensor deviations. Unless the factor is set to 'off', the Corr arrow in the display
shows an active scale correction.*)
*) The standard curve (LIN E.751) and the user sensor curve (Lin USEr)
posses separate correction settings.
7.6.5 Average filter (“tAuG”)
The filter forms the arithmetic floating average over the entered time. The
displayed value will be correspondingly slower in this case.
7.6.6 Output (“Out”)
The output can be used as serial interface (HND-Z031 interface adapters) or as
analogue output (0-1 V). If none of both is needed, we suggest switching the
output off, because battery life then is extended.
7.6.6.1 Analogue Output – Scaling with DAC.0 and DAC.1
With the DAC.0 and DAC.1 values the output can be rapidly scaled to your
efforts.
Example: -50 °C...250 °C should correspond to 0...1 V at the output
Set “DAC.0” to -50.00 °C and “DAC.1” to 250.0 °C -> finished.
Keep in mind not to connect low-resistive loads to the output, otherwise the output
value will be wrong and battery life is decreased. Loads above approx. 10 kOhm
are uncritical.
If the display exceeds the value set by DAC.1, then the device will apply 1 V to
the output
If the display falls below the value set by DAC.0, then the device will apply 0 V to
the output
In case of an error (Err.1, Err.2, no sensor, etc.) the device will apply slightly
above 1 V to the output.