Kobold HND-F215 User manual

Operating Instructions
for
Manual Humidity Precision
Measuring Unit
Model: HND-F215

HND-F215
page 2 HND-F215 K07/0522
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 Requirements ........................................................................... 5
7.2Connections ......................................................................................... 6
7.3Displays ............................................................................................... 6
7.4Push buttons ........................................................................................ 8
7.5Instrument Configuration ...................................................................... 9
7.6Measurements Using the Combination Measuring Sensor
HND-FF31 ......................................................................................... 11
7.7Measurements Using the Flow Measuring Probes HND-FF32 a.
HND-FF33 ......................................................................................... 12
7.8Notes for Special Functions ............................................................... 13
7.9The Serial Interface ........................................................................... 17
7.10How to Calibrate Meas. of Rel. Humidity Using HND-FF31 ............... 18
7.11System and Error Messages .............................................................. 20
7.12System and Error Messages .............................................................. 21
7.13Error and System Messages during HND-FF31 Calibration .............. 22
8.Maintenance ............................................................................................... 22
9.Technical Information .................................................................................. 22
10.Order Codes ............................................................................................... 24
10.1Probe for humidity, temperature and flow measurement ................... 24
10.2Accessories for humidity precision measuring units HND-F and
probe HND-FF ................................................................................... 25
11.EU Declaration of Conformance ................................................................. 26
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

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HND-F215 K07/0522 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:
Manual Humidity Precision Measuring Unit model: HND-F215
4. Regulation Use
Any use of the Manual Humidity Precision Measuring Unit, model: HND-F215,
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-F215
page 4 HND-F215 K07/0522
5. Operating Principle
The KOBOLD HND-F215 manual measuring unit allows for the measurement of
gas humidity and gas temperature or the gas respectively water flow. Appropriate
probes are available for both measuring applications (for more technical data, see
subsequent pages). The device offers extensive functions, a high degree of
accuracy, and decisive advantages in operation in order to support the user in
determining the various measured quantities.
In addition to the standard basic functions like minimum/maximum value memory,
hold function, dew-point calculation, or a calibration function for humidity
measurement, the improved device design KOBOLD HND-F215 has a
minimum/maximum alarm, adjustable alarm, a real-time clock, and logger
function.
6. Electrical Connection
6.1 Mains operation
When using a power supply device please note that operating
voltage has to be 10.5 to 12 VDC. Do not apply over-voltage!! Cheap
12 V-power supply devices often have excessive no-load voltage.
We, therefore, recommend using regulated voltage power supply
devices. Trouble-free operation is guaranteed by our power supply
HND-Z002. Prior to connecting the plug power supply device with
the mains supply make sure that the operating voltage stated at
the power supply device is identical to the mains voltage.
 Treat device and sensor carefully. Use only in accordance with above
specification. (do not throw, hit against etc.). Protect plug and socket from
soiling. Only use for the HND specified sensors. Connecting the instrument to
others, may damaged the instrument and the probe.
 Switch off instrument to change sensors.
 When connecting the probe, the connector may not lock correctly. In such
case take the plug not at the casing but at the buckling protection at the end of
the plug. If the plug is entered correctly, it will slide in smoothly.
 To disconnect sensor/probe, the interface or the power supply devices do not
pull at the cable but at the plug.

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7. Operation
7.1 Safety Requirements
This device has been designed and tested in accordance with 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 the device.
1. Trouble-free operation and reliability of the device can only be guaranteed if
the device is not subjected to any other climatic conditions than those stated
under chapter 9. Technical Information.
2. If the device is transported from a cold to a warm environment condensation
may cause 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. If device is to be connected to other devices (e.g. via serial interface) the
circuitry has to be designed most carefully. 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: If device is operated with a defective mains power supply
(short circuit from mains voltage to output voltage) this ma result in
hazardous voltages at the device (e.g. sensor socket at interface).
4. If there is a risk whatsoever involved in 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 serious injury and
material damage.

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7.2 Connections
Interface: Connection for electrical isolated interface
adapter (accessories: HND-Z031, -Z032 or -Z033)
Connection for meas. Probes *)
Temperature input T2: Connection for NiCr-Ni-
temperature probe (type K) for surface temperature
measurements etc.
The mains socket is located at the left side of the measuring instrument.
*) The following sensor types can be connected to the connection socket:
-HND-FF31 (atmospheric humidity and temperature T1)
-HND-FF33 (flow speed air, 0.55..20m/s)
-HND-FF32 (flow speed water, 0.05..5m/s)
7.3 Displays
Depending on the measuring probes/sensors connected the following measuring
results can be displayed:
HND-FF31
Main display:
 r.H.: relative atmospheric humidity in %
Secondary display: possible views:
 T1: temperature of the HND-FF31
 Td: dew point temperature of air
 kJ/kg: enthalpy
with surface temperature probe at T2:
T2: surface temperature
Δ
Td: dew point ratio = T2 - Td
The desired secondary display view can be selected by pressing the -key.
HND-FF32 or HND-FF33:
Main display:
 m/s: flow rate
Secondary display: possible views:
 t.AVG: time left till average flow value in
seconds will be displayed
 with temperature probe at T2 and as
soon as the averaging time has been
reached: T2: temperature

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HND-F215 K07/0522 page 7
Special display – elements
Min/Max/Hold: shows if a min., max. or hold value is
displayed in either the main or the secondary display.
CAL-arrow: indicates that a humidity calibration is carried
out at the moment.
Warning triangle: indicates a low battery, full logger
stora
g
e, etc.
Corr arrow: indicates that correction factor is activated
Logger arrow: indicates that the logger function is
activated.
Alarm arrow: indicates an alarm
Messages at device startup:
The device will show some messages at the startup depended on the
configuration and the connected sensor. Further information about the displays
can be founded in the chapter “system and error messages” or by the display in
the chapter “configuration”.
Note: The message display can be aborted by pressing any key (keys 2 - 6)
after the segment test.

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7.4 Push buttons
On/off key
in/max when taking measurements:
press shortly: min. or max. measuring value will
be displayed
press for 1 sec.: the value shown will be deleted
up/down for configuration:
to enter values, and/or chan
g
e settin
g
s
CAL: (for HND-FF31-measuring probe only)
press for 2 sec.: humidity calibration will be started
press for more than 10 sec.: reset of humidity
calibration to factory
calibration
Set/Menu:
press (Set) shortly: display changes between:
T1,T2,Td, ∆Td,kJ/kg (if existing)
press (Menu) for 2 sec.: configuration menu is
activated
Store/Quit:
Measurement: Hold current measuring value ('HLD'
in display)
for flow measurements in the 'AVGHold' mode:
start new measurement or handling
of logger functions
Set/Menu: Acknowledge setting, return to
measurin
g
.

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7.5 Instrument 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.
For configuration of the device press -key for 2 seconds; the main menu
of the configuration will be called up. Use key to select a sub-menu; use
the key to actually go into the sub-menu selected and to change
parameters.
Use the keys and to set the individual value for the parameter.
Press the key again to memorize the changes made and to
change to the main menu. Use key to leave the configuration.
Read Logger': Read Out Logger Data (will be displayed only if data are
memorized in the individual value logger mode)
For more information please refer to the chapter 'data logger - how to display
individual values'.
'Set Configuration': General Device Configurations
Setting general configuration:
Please note: the points marked by *1 will only be displayed if no data is
stored in the logger.
'AVG': Selection of Averaging Proceedings for Flow Measurement *1
(only HND-FF32/33)
Cont: continuous averaging - the average value calculated from
the measuring conducted during the averaging period will be displayed
Hold: press key for averaging - flow measurements will be taken during the
averaging period, then the average value will be calculated and
displayed till the next flow measurement is started.
't.AVG': Setting of Averaging Period *1 (only with HND-FF32-FF33)
1 .. 30: Time for averaging (in seconds) during flow measuring
'Unit': Selection of Temperature Unit °C /°F *1
°C: All temperature values in degrees Celsius
°F: All temperature values in degrees Fahrenheit
'Offset T1': Zero Displacement of Sensor Temperature T1 *1
(only with HND-FF31)
-10.0 °C...10.0 °C The zero point of the measurement of channel 1 will be
-18.0 °F...18.0 °F: displaced by this value.
off: Zero point displacement is deactivated (=0.0°)
'Offset T2': Zero Displacement of Temperature T2 *1
-10.0 °C...10.0 °C or The zero point of the measurement of channel 1 will be
displaced
-18.0 °F...18.0 °F: by this value.
off: Zero point displacement is deactivated (=0.0°)

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'Corr': Selection of Display Correction Factor *1
1.001...1.200: The temperature value (referring to 0 °C or. 32 °F) will be
multiplied by this factor.
off: Factor is deactivated (=1.000)
'Power.off': Selection of Power-Off Delay
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. (deactivated when cyclic logger is
running)
off: automatic power-off function deactivated (continuous operation)
'Address': Selection of Base Address'
01, 11, 21, ..., 91: Base address for interface communication.
Using the interface converter HND-Z031 it is possible to connect several devices to a
single interface. As a precondition the base addresses of all devices must not be
identical. In case several devices are connected via one interface make sure to
configurate the base addresses accordingly.
'Set Alarm': Alarm Settings
Settings for the alarm function:
Please note: the points marked by *2 will only be displayed if the alarm
functions 'on' or 'no'.So' have been selected.
'Alarm': Selection of Alarm Function
off: Alarm off
no.So: Alarm on, the "AL" arrow will be displayed in case of alarm
on: Alarm on, in case of alarm the "AL" arrow will be displayed; in
addition an audible alarm signal will be given.
'Alarm Input': Selection of Alarm Input *2
arrow points to the input channel
'Alarm Low': Setting of Min. Alarm *2
Setting of the display limit value triggering a min. alarm.
'Alarm High': Setting of Max. Alarm *2
Setting of the display limit value triggering a max . alarm
'Set Logger': Logger Settings (not possible if there are data in the logger memory)
Setting for the logger function:
.
'Function': Selection of Logger Function
off: Logger function off (Use key 6 for Hold-function)
Stor: Individual value logger (Press key 6 to store an individual value set)
CYCL: Cyclic logger (Start by pressing key 6)
note: if function "AVG Hold" is chosen, the cyclic logger is not supported.

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'Cycle Time': Setting of Cycle Time (only with Func = CYCL)
1 ... 3600: Cycle time in seconds giving the intervals between the logger data
recordings
'Set Clock': Setting of the Real-Time Clock
Setting of the internal real-time clock:
'Clock': Set the Time
Setting of the time (hours : minutes)
'Year': Set the Year
Setting of the year.
Time span that can be set: 1997 ... 2100
'Date': Set the Date
Setting of the date (day. month)
7.6 Measurements Using the Combination Measuring Sensor
HND-FF31
The HND-FF31 has been especially designed to carry out measurements of
ambient temperature. All HND-FF31-probes are interchangeable without
recalibration being required. The scope of supply includes one sensor to measure
relative atmospheric humidity and another one to measure the ambient
temperature T1.
rel. humidity r.H. [%]
Relative humidity measured in the tip of the probe. Resolution 0.1 %
Ambient temperature T1
Temperature measured in the tip of the probe. Resolution 0.1 °C or 0.1 °F.
Other values on display will be calculated by the measuring device (acc. to
Mollier diagram).
Dew point temperature Td
Cold air cannot absorb as much steam as warm air. This means that the relative
humidity increases as the temperature decreases. If 100 % have been reached,
the air is saturated with steam; another decrease in temperature results in part of
the steam condensing to water, becoming visible as fog or precipitation (dew).
The dew point temperature indicates at which temperature a 100 % saturation
would be reached and as of when "dew" can be expected.

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Enthalpy h [kJ/kg]
Enthalpy refers to the energy content of air. This value always refers to dry air at
0 ° C. I.e. the energy content of air with a relative humidity of 0 % and 0 °C is
0kJ/kg. The warmer the air is, the higher the relative humidity, the higher the
energy content. Therefore, more energy is required to heat up humid air than dry
air.
All humidity and temperature values calculated from the measuring
values refer to a standard atmospheric pressure of 1013 mbar. For
measuring atmospheric air, the deviations do not have to be taken
into account. When taking measurements in pressure vessels or
under similar conditions, the values have to be corrected in
accordance with a suitable correction table.
Additional Measurements with NiCr-Ni-Surface Probe at T2:
Surface temperature T2
The second temperature channel can amongst other things be used to take
measurements of surface temperatures
Dew point distance Td
This measurement refers to measurements of T1, T2 and relative atmospheric
humidity.
The combination sensor is used to measure the ambient air, whose condition is
issued to calculate the dew point Td. The surface sensor is used to measure
surfaces within this ambient air, with Td stating the temperature difference
between those measurements and the dew point.
Example: measuring the ambient temperature results in a Td of 5 °C. As long as
the surface-temperature (T2) of a window exceeds 5°C (Td > 0 °C) the surface
won’t sweat! When T2 falls below 5 °C, (Td < 0 °C) it will sweat.
Other examples for application: detection of 'humid corners', monitoring of heat
exchangers, weather forecast etc.
7.7 Measurements Using the Flow Measuring Probes
HND-FF32 a. HND-FF33
Two types of measuring probes are available for flow speed measurements:
Please note: - use HND-FF32 to measure water flow
- use HND-FF33 to measure air flow
Incorrect use will result in incorrect measurements!
Please observe max. measuring ranges for flow measurements!
-HND-FF32: 0.05 ... 5.00 m/s (water)
-HND-FF33: 0.55 ... 20.00 m/s (air)
Higher speeds may destroy the measuring head or may, at least, permanently
influence measuring accuracy.
An arrow on the measuring head indicates the required flow direction.

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HND-F215 K07/0522 page 13
Flow measuring probes are 'free-jet calibrated', i.e. the diameter of the flow
channel has to be 5 times bigger than the diameter of the flow measuring head (=
approx. 5 cm, otherwise measuring errors up to 40 %).
When evaluating the measuring results please also note that in a channel the
flow speed is usually higher in the middle of the channel than at its edges.
Therefore, use appropriate tables to calculate air flow by means of flow speed.
Averaging for Flow Measurements:
When taking flow measurements fluctuations tend to be quite high. To be able to
display a stable measuring value two averaging functions have been integrated in
the instrument.
Continuous Averaging
The average value displayed has been calculated from the past few
measurements conducted during the averaging time set After the instrument has
been switched on the time remaining till expiration of the averaging time will be
displayed at the bottom line of the display. The min. and max. values memorized
refer to the minimum and/or maximum average value displayed.
Average Hold
As soon as the HND-F215 instrument has been switched on the device starts
calculating the average flow value during the averaging time. During measuring
the current measuring value will be shown in the top line of the display while the
bottom line shows the remaining measuring time. As soon as measurements
have been completed the average value will be displayed and the device will
switch to the HOLD mode. The min. and max. values memorized refer to the
minimum and/or maximum measuring value established during averaging.
To start a new measuring series press the key "Store" (key 6).
Additional Measurements with any NiCr-Ni-Temperature Probe at
T2:
Use temperature channel T2 to take measurements of medium temperature, for
example. The value shown is not an average value.
7.8 Notes for Special Functions
Zero displacement ('Offset')
A zero displacement can be carried out for each of the two temperature channels
T1 (HND-FF31 only) and T2:
displayed temperature = measured temperature - Offset
Standard setting: 'off' = 0.0°, i.e. no zero displacement will be carried out. The
zero displacement is mainly used to compensate for sensor deviations. Unless
'off' is set, this value will be displayed shortly after the device is switched on;
during operation it will be identified by means of the offset arrow in the display.

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page 14 HND-F215 K07/0522
Display Correction Factor ('Corr')
This factor is applied to both sensor channels.
temperature displayed [°C] = temperature measured [°C] * Corr or
temperature displayed [°F] = (temperature measured [°F]-32 °F) * Corr + 32 °F
Standard setting: 'off' =1.000
This factor is used to compensate for losses of transfer in case of surface
measurements, occurring if the object to be measured is extremely hot but will be
cooled by lower ambient temperatures. The same can be true for sensors with a
large mass. Unless 'off' is set, this value will be displayed shortly after the device
is switched on; during operation it will be identified by means of the Corr-arrow in
the display.
Base Address ('Adr.')
Using a interface converter it is possible to connect several instruments to a
single interface. As a precondition the base addresses of all devices must not be
identical. In case several devices will be connected via one interface make sure
to configurate the base addresses accordingly.
Channel 1 will be addressed by the base address set, channels 2 and 3 will have
the following addresses.
(Example: base address 21 - channel 1 = 21, channel 2 = 22, channel 3 = 23)
Alarm:
3 alarm settings are available: off (off), on with horn sound (on), on - no horn
sound (no.So)
Depending on the sensors in use there is the choice of which channel is surveyed
by the alarm function.
If the alarm function (on, no.So) has been activated, an audible alarm signal will
be given with the following cases:
 values have fallen below/exceeded the lower/upper alarm limits in the channel
to be monitored
 FE 9 and/or FE11 at the channel to be monitored
 low battery
 FE 7: In case of a system error the horn will be sounded regardless of the
alarm setting even if alarm = off)
If one or more alarm settings have been fulfilled the "alarm" arrow will be shown
in the display; in case of access via the interface the 'PRIO'-Flag will appear.
Real Time Clock:
The real time clock is required to put logger data in a time order. If necessary,
please check the setting:
Setting via keys (p.r.t. configuration of the device): time (minutes. accurate), date,
year.
Setting via interface: use suitable software (seconds - accurate) e.g. HND-Z034-
software.
The clock setting menu will be started automatically when the device is switched
on again after a battery change.

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Data Logger:
As soon as key "Store" (key 6) is pressed and .Func = Stor. is chosen, a data set
will be stored. The data stored can either be observed on the display (prt. "How to
Display Individual Values" below), or be read into a PC via the interface.
When .CYCL. is set and the logger has been started using key "Store" (press for
2 seconds), data sets will be stored till the recording is either stopped or the
logger memory is full. (not available with HND-FF… and "AVG Hold") The logger
cycle time can be set. Use the interface to input the data stored into a PC.
If the logger contains already data, the connected kind of sensor
(HND-FF31, HND-FF33, HND-FF32) must not be changed. In such
case the instrument would display "Sens Erro". Functions like the
read out of logger data or clear the memory are still accessible.
Storing of Individual Values: "Func Stor"
Data set that can be stored: 99
One data set consists of: measuring value channel 1 - 6 and time + date
Press "Store"-key to store current values. .St.XX. will be displayed for a short
time, XX representing the number of the data set 1..99.
If the logger memory is full a warning will appear on the display:
(warning triangle permanently shown, cyclic display of "LoGG FuLL"
and the current measurin
g
value
)
Upon pressing the "Store"-key (key 6) for 2 seconds the selection for deleting the
logger memory will be displayed assumed that there are any logger data.
delete all data sets delete data set recorded last
do not delete (= cancel
procedure)
Use the keys "" (key 2) or "" (key 5) to make a selection. Use key "Quit"
(key 6) to acknowledge selection.
How to display Individual Values:
Individual values can also be displayed without interface which is not possible
with the cyclic logger function.
If there are data sets in the logger memory, the additional main menu .rEAd
LoGG. will be offered upon call-up of the menu (press key "Set" (key 4) for 2 sec).
When the ""-key (key 3) is pressed the last data set will be displayed. Use ""-
key (key 3) to change over between the values of one data set (channel 1 - 6,
date/time).
To change over from one data set to another use the keys "" (key 2) or ""
(key 5).

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Cyclic Logger Function: "Func CYCL"
Data sets that can be stored: 5400
One data set consists of: measuring value channel 1 - 6
The cycle time is set during "Device configuration".
Please Note: During long time recordings we suggest to use a
mains adapter (HND-Z002).
Start logger recording:
Press "Store"-key (key 6) for 2 seconds to start recording. Then .St.XXXX. will be
displayed for a short time for every logging; XXXX representing the number of the
data set 1..5400.
If the logger memory is full a warning triangle will be shown on the
display:
(warning triangle permanently shown, cyclic display of "LoGG FuLL"
and the current measurin
g
value
)
Stop logger recording:
Press "Store"-key (key 6) for a short time to stop recording. You will then be
asked to acknowledge again:
recording to be stopped recording to be continued
Use the keys "" (key 2) or "" (key 5) to make your selection. Use "Quit"-key
(key 6) to acknowledge your selection.
Please note: If you try to switch off the instrument in the cyclic
recording mode you will be asked once again if the recording is to
be stopped. The device can only be switched off after the recording
has been stopped as the Auto-Power-Off-function is deactivated
during recording.
Delete data in logger memory:
Press "Store"-key (key 6) for 2 seconds to display the selection for deleting data,
if any, in the logger memory:
delete all data sets
do not delete (= cancel
procedure
Use the keys "" (key 2) or "" (key 5) to make your selection. Use "Quit"-key
(key 6) to acknowledge your selection.

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HND-F215 K07/0522 page 17
7.9 The Serial Interface
All measuring and setting data of the device can be read and/or changed by
means of the serial interface and a suitable electrically isolated interface adapter
(HND-Z031, HND-Z032). In order to avoid transmission errors, there are several
security checks implemented.
The following standard software packages are available for data transfer:
- HND-Z034: Software for temperature display and/or read out of logger
data.
- BUS-S20M: 20-channel software to display the humidity (channel 1), the
temperature. (channel 2, 3)
The following interface functions will be supported:
Channel DLL-
Code Name/function
1 2 3 4 5 6
x x x x x x 0 Read nominal value
x x x x x x 3 Read s
y
stem status
x 12 Read ID number
1
)
1
)
1
)
1
)
1
)
1
)
22 Read min. alarm limit
1
)
1
)
1
)
1
)
1
)
1
)
23 Read max. alarm limit
2
)
32 Read confi
g
uration fla
g
2
)
160 Set confi
g
uration fla
g
x x x x x x 199 Read meas. t
y
pe in displa
y
x x x x x x 200 Read min. displa
y
ran
g
e
x x x x x x 201 Read max. displa
y
ran
g
e
x x x x x x 202 Read unit of displa
y
x x x x x x 204 Read decimal point of displa
y
x 208 Read channel coun
t
x x 216 Read offset correction
x 218 Read corr. factor
(
1000..1200
)
3
)
3
)
3
)
3
)
3
)
3
)
224 Read lo
gg
er data
(
c
y
clic lo
gg
er
)
4
)
225 Read lo
gg
er c
y
cle
5
)
226 Set lo
gg
er c
y
cle
6
)
227 Start lo
gg
er recordin
g
7
)
228 Read count of lo
gg
er data
7
)
229 Read lo
gg
er state
3
)
231 Read lo
gg
er stop time
x
)
233 Read real-time clock
x 234 Set real-time clock
7
)
236 Read lo
gg
er size
x 240 Reset unit
x 254 Read pro
g
ram identification
8
)
260 Read lo
gg
er data
(
man. lo
gg
er
)
1) only when alarm is activated for referring channel
2) configuration flags: 50: 0 = logger off 1 = logger on
51: 0 = man. logger 1 = cyclic logger
3) only when logger function = CYCL, data present and logger stopped.
4) only when logger function = CYCL
5) only when logger function = CYCL and no data in memory
6) only when logger function = Stor, or logger function = CYCL and no data in memory
7) only when logger is activated (CYCL or Stor)
8) only when logger function = Stor and data in memory
For HND-FF31
Channel 1: rel atmospheric humidity
Channel 2: temperature T1
Channel 3: temperature T2
Channel 4: dew point temperature Td
Channel 5: dew point distance Td
Channel 6: enthalpy h
For HND-FF32/HND-FF33
Channel 1: flow speed
Channel 3: temperature T2
Channel 2, 4, 5, 6: not supported.
For NiCr-Ni (without HND-FF31/32/33)
Channel 3: temperature T2
Channel 1, 2, 4, 5, 6: not supported.
Logger handling still works with
channel 1.

HND-F215
page 18 HND-F215 K07/0522
7.10 How to Calibrate Meas. of Rel. Humidity Using HND-FF31
Due to the natural aging process of the polymer humidity sensor we recommend
to calibrate the sensor at least once a year to ensure optimum measuring
accuracy. For optimum recalibration and linearity check, please return device to
manufacturer. Use integrated calibration function for 2-point on-site calibration.
Please note: Automatic temperature compensation during
calibration
The rel. humidity to be found in the calibration equipment is quite
often highly dependent on temperature. This dependence is
automatically compensated for when calibrating with the integrated
calibration equipment and automatic detection. In case you want to
enter calibration values manually, make sure to enter the respective
temperature with the values.
How to carry out calibration
Please note: the calibration is only possible, if the logger memory is
empty.
Start calibration: press "CAL" (key 3) for 2 sec. (after more than 10 sec. the
factory calibration will be set). The display prompts you to measure the first
humidity value. Use "Set"-key (key 4) to stop calibration whenever you want to. In
such a case the last calibration before this one will be used.

HND-F215
HND-F215 K07/0522 page 19
1) Selection automatic detection / manual input
Press "CAL"-key (key 3) for a short time to switch over between the various
possibilities existing:
automatic detection (acceptable humidity variables see above)
Display will switch over between the acceptable variables.
manual input
If you want to use other humidity values than those provided
in the automatic detection, please enter them here.
0 ... 100.0 %: input range for rel. atmospheric humidity.
(please note Watch out for 'Automatic temperature
compensation durin
g
calibration'
)
2) Calibration point 1
Put sensor in suitable calibration equipment.
- As long as the individual values in the display for the
automatic detection keep changing, a valid value could not be
detected (humidity value measured may deviate from value set
by manufacturer by approx. 10 %).
- In case of manual input, enter value here.
As soon as the display stops blinking and changing between
values, a stable value has been detected and can be taken
over by means of the "Store"-key (key 6). Then the next
calibration step will be displa
y
ed.
3) Calibration point 2
Put sensor into suitable calibration equipment prepared for the
second humidity value.
Precondition: If the first value was below 50 %, this value has
to be over 50% or vice versa. Otherwise proceed as above. As
soon as the display stops blinking and changing between
values, the measuring value can be taken over by means of
the "Store"-ke
y
(
ke
y
6
)
and the calibration has been completed.
If error messages are displayed when calibrating the instrument, the old
calibration keeps valid, the new calibration data are lost. Please refer to "Error
and System Messages during HND-FF31 Calibration"

HND-F215
page 20 HND-F215 K07/0522
7.11 System and Error Messages
7.11.1 Messages at device startup
Message (display) Description
segment test (8888 and all special sign‟s/arrows)
current time (CLOC xx:xx)
identified sensor (HND-FF31, -FF32 or –FF33)
temperature offset of the HND-FF31-sensor only with HND-FF31 and adj. offset-value <> off
flow - averaging procedure only with HND-FF32, --FF33
(AVG Hold or AVG Cont)
flow - averaging period only with HND-FF32, --FF33
temperature offset for NiCr-Ni-probe only at adjusted offset-value <> off
display correction for NiCr-Ni-probe only at adjusted corr-value <> off