GREISINGER GMH 3330 User manual

H40.0.01.6C-09
GHM Messtechnik GmbH • Standort Greisinger
Hans-Sachs-Str. 26 • D-93128 Regenstauf
+49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 [email protected]
Digital Precision Hand-held Measuring Device
For Atmospheric Humidity, Temperature, Dew Point, Dew
Point Distance, Enthalpy and Flow Speed
As of version V2.9 Operating Manual GMH 3330
WEEE-Reg.-No. DE93889386

H40.0.01.6C-09 Operating Manual GMH 3330 Page 2 of 16
Contents
1GENERAL NOTE.................................................................................................................................................3
2SAFETY.................................................................................................................................................................3
2.1 INTENDED USE .................................................................................................................................................3
2.2 SAFETY SIGNS AND SYMBOLS...........................................................................................................................3
2.3 SAFETY GUIDELINES.........................................................................................................................................4
3PRODUCT SPECIFICATION.............................................................................................................................4
3.1 SCOPE OF SUPPLY .............................................................................................................................................4
3.2 OPERATION AND MAINTENANCE ADVICE.........................................................................................................4
4HANDLING...........................................................................................................................................................5
4.1 DISPLAY ...........................................................................................................................................................5
4.2 PUSHBUTTONS..................................................................................................................................................6
4.3 CONNECTIONS ..................................................................................................................................................6
4.4 POP-UP CLIP......................................................................................................................................................7
5CONFIGURATION..............................................................................................................................................7
6MEASUREMENTS USING COMBINATION MEASURING SENSOR TFS0100.......................................9
7MEASUREMENTS USING FLOW MEASURING PROBES STS005 / STS020.........................................10
8NOTES TO SPECIAL FUNCTIONS................................................................................................................11
8.1 ZERO DISPLACEMENT (’OFFSET’) ..................................................................................................................11
8.2 DISPLAY CORRECTION FACTOR (’CORR’)......................................................................................................11
8.3 BASE ADDRESS (’ADR.’) ................................................................................................................................11
9HOW TO CALIBRATE MEAS. OF REL. HUMIDITY USING TFS 0100..................................................11
10 SYSTEM AND ERROR MESSAGES...........................................................................................................12
10.1 MESSAGES AT DEVICE STARTUP.................................................................................................................12
10.2 SYSTEM AND ERROR MESSAGES ................................................................................................................13
10.3 SYSTEM AND ERROR MESSAGES DURING TFS0100 CALIBRATION............................................................13
11 THE SERIAL INTERFACE...........................................................................................................................14
12 SPECIFICATION............................................................................................................................................15
13 RESHIPMENT AND DISPOSAL..................................................................................................................16
13.1 RESHIPMENT...............................................................................................................................................16
13.2 DISPOSAL INSTRUCTIONS............................................................................................................................16

H40.0.01.6C-09 Operating Manual GMH 3330 Page 3 of 16
1 General Note
Read this document carefully and get used to the operation of the device before you use it. Keep this
document within easy reach near the device for consulting in case of doubt.
The manufacturer is not liable for misprints.
2 Safety
2.1 Intended Use
The safety requirements (see below) have to be observed.
The device must be used only according to its intended purpose and under suitable conditions.
Treat device and sensor carefully. Use only in accordance with above specification. (do not throw, hit
against etc.). Protect plug and socket from soiling.
The device combined with the combined measuring probe TFS 0100 is designed for room climate meas-
urements. This includes gauging of atmospheric humidity, temperature, dew point, dew point distance and
enthalpy.
Together with the flow rate measuring probes STS 005 and STS 020 the device provides flow rate meas-
urements either in water or in air.
2.2 Safety signs and symbols
Warnings are labelled in this document with the followings signs:
DANGER
Caution! This symbol warns of imminent danger, death, serious injuries
and significant damage to property at non-observance.

Attention! This symbol warns of possible dangers or dangerous situa-
tions which can provoke damage to the device or environment at non-
observance.
Note! This symbol point out processes which can indirectly influence
operation or provoke unforeseen reactions at non-observance.

H40.0.01.6C-09 Operating Manual GMH 3330 Page 4 of 16

2.3 Safety guidelines
This device has been designed and tested in accordance with the safety regulations for electronic de-
vices.
However, its trouble-free operation and reliability cannot be guaranteed unless the standard safety meas-
ures 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 "Specification".
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 tempera-
ture before trying a new start-up.
2. If there is a risk whatsoever involved in running it, the device has to be switched off im-
mediately 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.
3. When connecting the device to other devices the connection has to be designed most thoroughly as
internal connections in third-party devices (e.g. connection GND with protective earth) may lead to un-
desired voltage potentials that can lead to malfunctions or destroying of the device and the connected
devices.
This device must not be run with a defective or damaged power supply unit.
Danger to life due to electrical shock!
4. Do not use these products as safety or emergency stop devices or in any other applica-
tion 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 mate-
rial damage.
3 Product Specification
3.1 Scope of supply
The scope of supply includes:
Device GMH 3330, incl. 9V battery block
Operation manual
3.2 Operation and maintenance advice
•Battery operation:
If ‘bAt’ is shown in the lower display the battery has been used up and needs to be replaced. However,
the device will operate correctly for a certain time. If ‘bAt’ is shown in the upper display the voltage is
too low to operate the device; the battery has been completely used up.
The battery has to be taken out, when storing device above 50 °C.
We recommend taking out battery if device is not used for a longer period of time.
After recommissioning the real-time clock has to be set again.
•Mains operation with power supply
When using a power supply please note that operating voltage has to be 10.5 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-power supplies often have excessive no-load volt-
age. We, therefore, recommend using regulated voltage power supplies.
Trouble-free operation is guaranteed by our power supply GNG10/3000.
Prior to connecting the power supply to the mains makes sure that the operating voltage stated at the
power supply is identical to the mains voltage.
_DANGER
_DANGER
_DANGER

H40.0.01.6C-09 Operating Manual GMH 3330 Page 5 of 16
%
°C
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
MAX
MIN HLD
%
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
Treat device and sensor carefully. Use only in accordance with above specification. (do not throw, hit
against etc.). Protect plug and socket from soiling.
To disconnect thermocouple sensor plug do not pull at the cable but at the plug.
When connecting the TFS or STS - 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 plug is entered correctly, it
will slide in smoothly.
Switch off instrument to change sensors.
Only use the specified sensors (p.r.t. chapter 4.3 “Connections”). Connecting the
instrument to others may damage the instrument and the probe.
4 Handling
4.1 Display
Depending on the measuring probes/sensors connected the following measuring results can be displayed:
TFS 0100:
Main display:
r.H.: relative atmospheric humidity in %
Secondary display: possible views:
T1: temperature of the TFS 0100
Td: dew point temperature of air
kJ/kg: enthalpy
with surface temperature probe at T2:
T2: surface temperature
Td: dew point ratio = T2 - Td
The desired secondary display view can be selected by pressing
the -key.
STS 005 or STS 020:
Main display:
m/s: flow rate
Secondary display:
t.AVG: time left till average flow value in seconds
will be displayed
with temperature probe at T2 and as soon as the aver-
aging time has been reached:
T2: temperature
Special display elements:
Min/Max/Hold:
shows if a min., max. or hold value is displayed in ei-
ther 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 storage, etc.
Corr arrow:
indicates that correction factor is activated

H40.0.01.6C-09 Operating Manual GMH 3330 Page 6 of 16
Messages at device startup:
The device will show message at the startup depended on the connected sensor.
4.2 Pushbuttons
On/off key
+
min/max when taking measurements:
press shortly: min. or max. measuring value will be
displayed
press for 1 sec.: the min. or max. value will be deleted
up/down for configuration
to enter values, or change settings
CAL: (for TFS 0100-measuring probe only)
press for 2 sec.: humidity calibration will be started
press >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 meas. in ‘AVGHold’ mode:
start new measurement or handling of
logger functions
Set/Menu: Acknowledge setting, return to measuring
4.3 Connections
Interface: connection for electrically isolated interface adapter
(accessory: GRS 3100, GRS3105 or USB3100)
Connection for measuring 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 instrument.
*)the following sensor types can be connected to the connection socket:
- TFS 0100 (atmospheric humidity and temperature T1)
- STS 020 (flow speed air, 0.55..20.00m/s)
- STS 005 (flow speed water, 0.05..5.00m/s)
1 2 3
4 5 6
ON
OFF max CAL
Storemin
Set
Menu Quit

H40.0.01.6C-09 Operating Manual GMH 3330 Page 7 of 16
4.4 Pop-up clip
Handling:
•Pull at label “open” in order to swing open the pop-up clip.
•Pull at label “open” again to swing open the pop-up clip further.
Pop-up clip closed
Pop-up clip at position 90°
Pop-up clip at position 180°
Function:
• The device with a closed pop-up clip can be plainly laid onto a table or attached to a belt, etc.
• The device with pop-up clip at position 90° can be set up on a table, etc.
• The device with pop-up clip at position 180° can be suspended from a screw or
the magnetic holder GMH 1300.
Device attached to a belt
Device set up on a table
Device suspended from
magnetic holder
GMH 1300
5 Configuration
For configuration of the device press -key for 2 seconds: the main menu of the configuration will be
called up.
Use the keys and to set the individual value for the parameter. Press the key again to memorize
the changes and to change to the main menu. Use key to leave the configuration.

H40.0.01.6C-09 Operating Manual GMH 3330 Page 8 of 16
’AVG’: Selection of Averaging Proceedings for Flow
Measurement (only STS005/020)
Cont:
continuous averaging - the average value calculated from
the measurements 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 (only STS005/020)
1..30:
Time for averaging (in seconds) during flow measuring
’Unit’: Selection of Temperature Unit
°C:
All temperature values in degrees Celsius
°F:
All temperature values in degrees Fahrenheit
’Offset T1’: Zero Displacement of Sensor Tempera-
ture T1 (only TFS0100)
-10.0°C...10.0°C
or
-18.0°F...18.0°F:
The zero point of the measurement of T1 will be
displaced by this value.
off:
Zero point displacement is deactivated (=0.0°)
’Offset T2’: Zero Displacement of Temperature T2
-10.0°C...10.0°C
bzw.
-18.0°F...18.0°F:
The zero point of the measurement of T2 will be
displaced by this value.
off:
Zero point displacement is deactivated (=0.0°)
’Corr’: Selection of Display Correction Factor
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. (automati-
cally deactivated for cyclic loggers)
off:
automatic power-off function deactivated
(continuous operation, e.g. in case of mains operation)
’Address’: Selection of Base Address
01, 11, 21, …, 91:
Base address for interface communication. Channel
1 will be addressed by the set base address, chan-
nel 2 to 6 will have the following addresses.
(Example: base address 21 - channel 1 = 21, chan-
nel 2 = 22, ..., channel 6 = 26)
Using the interface converter GRS3105 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 con-
nected via one interface make sure to configurate the base addresses accordingly.
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
°C
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
°C
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
°C
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
max
min
2
5

H40.0.01.6C-09 Operating Manual GMH 3330 Page 9 of 16
6 Measurements Using Combination Measuring Sensor TFS0100
The TFS0100 has been especially designed to carry out measurements of ambient temperature. All
TFS0100-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 tempera-
ture 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 de-
crease in temperature results in part of the steam condensing to water, becoming visible as fog or precipi-
tation (dew).
The dew point temperature indicates at which temperature a 100% saturation would be reached and as of
when "dew" can be expected.
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 con-
tent of air with a relative humidity of 0% and 0°C is 0kJ/kg. The warmer the air the higher the relative hu-
midity, 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 used 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 fore-
cast etc..

H40.0.01.6C-09 Operating Manual GMH 3330 Page 10 of 16
7 Measurements Using Flow Measuring Probes STS005 / STS020
Two types of measuring probes are available for flow speed measurements:
Please note: -use STS 005 to measure water flow
-use STS 020 to measure air flow
Incorrect use will result in incorrect measurements!
Please observe max. measuring ranges for flow measurements!
-STS 005: 0.05 ... 5.00 m/s (water)
-STS 020: 0.55 ... 20.00 m/s (air)
Higher speeds may destroy the measuring head or may, at least, permanently influence measuring accu-
racy.
An arrow on the measuring head indicates the required flow direction.
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 measur-
ing 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 GMH3330 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 ist not an average value.

H40.0.01.6C-09 Operating Manual GMH 3330 Page 11 of 16
8 Notes to Special Functions
8.1 Zero Displacement (’Offset’)
A zero displacement can be carried out for each of the two temperature channels T1 (TFS0100 only)
and T2:
temperature displayed = temperature measured - 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 Corr-arrow in the display.
8.2 Display Correction Factor (’Corr’)
This factor is applied only to the NiCr-Ni-input T2.
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 de-
vice is switched on; during operation it will be identified by means of the Corr-arrow in the display.
8.3 Base Address (’Adr.’)
Using the interface converter GRS3105 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 - 6 will have the following addresses.
(Example: base address 21 - channel 1 = 21, channel 2 = 22, …, channel 6 = 26)
9 How to Calibrate Meas. of Rel. Humidity Using TFS 0100
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:
How to calibrate sensor with the calibration device GFN xx
The following humidity variables are acceptable for the automatic buffer detection:
Name
RH at 20°C
Calibration device
The calibration device GFN XX have been optimized for ap-
plication with TFS 0100. To ensure highly accurate calibra-
tion, we recommend to use these humidity variables only. For
more detailed information please refer to the relevant operat-
ing manual.
KNO3
93%
---
NaCl
76%
GFN 76
MgCl2
33%
GFN 33
Silica-Gel
0%
---
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 equip-
ment and automatic detection. In case you want to enter calibration values manually, make sure to enter
the respective temperature with the values.

H40.0.01.6C-09 Operating Manual GMH 3330 Page 12 of 16
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.
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 detec-
tion, please enter them here.
0 ... 100.0 %: input range for rel. atmospheric humidity.
(please note: Watch out for 'Automatic temperature compensation during
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 yet (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 de-
tected and can be taken over by means of the "Store"-key (key 6). Then the next calibration step will
be displayed.
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.
Except this, same procedure as above. As soon as the display stops blinking and chang-
ing between values, the measuring value can be taken over by means of the "Store"-key
(key 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 TFS0100 Calibration" in chapter 12.
10 System And Error Messages
10.1 Messages at device startup
Message (display)
Description
segment test (8888 and all special sign’s/arrows)
identified sensor (tFS 0100, StS 005 or StS020)
temperature offset of the TFS (display see chapter 5)
only with TFS0100 and adjusted offset-value <> off
flow - averaging procedure (AVG Hold or AVG Cont)
only with STS...
flow - averaging period (display see chapter 5)
only with STS...
temperature offset for NiCr-Ni-probe (display see chapter 5)
only at adjusted offset-value <> off
display correction for NiCr-Ni-probe (display see chapter 5)
only at adjusted corr-value <> off
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
max
min
2
5
%
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL
%
r.H.
Td T2 Td
m/s
kJ/kg
AL Logg
T1
Corr
CAL

H40.0.01.6C-09 Operating Manual GMH 3330 Page 13 of 16
10.2 System and Error Messages
System or error
messages
Description / Reason
Remedy
no probe/sensor connected
connect probe/sensor
probe/sensor damaged
probe/sensor defective return to manufacturer for
repair
Low battery voltage, device will
only continue operation for a short
time
replace battery
Low battery voltage
replace battery
If mains operation: wrong voltage
replace power supply, if fault continues to exist: device
damaged
No display
or
mazy characters
Battery voltage too low
replace battery
If mains op.: power supply defec-
tive or wrong voltage/polarity
check/replace power supply
System error
disconnect battery or power supply, wait for a short time,
re-connect
device defective
return to manufacturer for repair
Values exceeding measuring
range
Check: are there any values exceeding the measuring
range specified? ->meas. value too high
Sensor/cable defective
-> replace
Values below measuring range
check: are there any values below the measuring
range specified? ->meas. value too low
Sensor/cable defective
-> replace
System fault
switch on again: if fault continues to exist, device is
damaged
-> return to manufacturer for repair
Instrument not within working tem-
perature
keep working temperature in between -25...50°C
No probe/sensor existing
or probe/sensor defective
connect probe/sensor;
probe/sensor damaged -> return to manufacturer for
repair
Value cannot be calculated
One measuring variable required for calculation is miss-
ing (no sensor) or incorrect (overflow/underflow)
10.3 System and Error Messages during TFS0100 Calibration
Error or system
messages
Description / Reason
Description / Reason
Deviation to high (zero point)
correct humidity variable?
no -> probe no longer within permissible tolerances,
return to manufacturer for recalibration.
Difference point1-point2 too small
difference has to be at least 40% if values are entered
manually select suitable
Incorrect temperature
calibration is only permissible in the temp. range from
5 ... 40°C
mbar
mbar
mbar
mbar

H40.0.01.6C-09 Operating Manual GMH 3330 Page 14 of 16
11 The serial interface
By means of the serial interface and a suitable electrically isolated interface adapter (USB 3100, USB
3100 N, GRS 3100 or GRS 3105) the device can be connected to a computer for data transfer.
To avoid transmission errors, there are several security checks implemented e.g. CRC.
The following standard software packages are available:
GMHKonfig: Software for a comfortable editing of the device (freeware)
EBS 20M / 60M: 20-/60-channel software to display the measuring values
In case you want to develop your own software we offer a GMH3000-development package including:
a universally applicable Windows functions library ('GMH3x32e.DLL') with documentation that can be
used by the most programming languages. Suitable for Windows XP™, Windows Vista™,
Windows 7™, Windows 8 / 8.1™, Windows 10™
Programming examples Visual Basic 4.0™, Delphi 1.0™,
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 system status
x
12
Read ID-no.
x
x
x
x
x
x
199
Read meas. type in display
x
x
x
x
x
x
200
Read min. display range
x
x
x
x
x
x
201
Read max. display range
x
x
x
x
x
x
202
Read unit of display
x
x
x
x
x
x
204
Read decimal point of display
x
208
Read channel count
x
x
216
Read offset correction
x
218
Read corr. factor (1000..1200)
x
240
Reset unit
x
254
Read program identification
For TFS 0100:
Channel 1: rel atmospheric humidity
Channel 2: temperature T1
Channel 3: temperature T2
Channel 4: dew point temp. Td
Channel 5: dew point distance Td
Channel 6: enthalpy h
For STS 005 / STS 020:
Channel 1: flow speed
Channel 3: temperature T2
Channel 2, 4, 5, 6: not supported
For NiCr-Ni (without TFS../STS..)
Channel 3: temperature T2
Channel 1, 2, 4, 5, 6: not supported. Logger handling still works with channel 1.

H40.0.01.6C-09 Operating Manual GMH 3330 Page 15 of 16
12 Specification
Measuring ranges with TFS 0100 E probe
Humidity 0.0 ... 100.0 % relative atmospheric humidity (resolution 0.1 % RH)
Ambient temperature -40.0 ... +120.0 °C (0.0...60.0°C with TFS0100) (resolution 0.1 °C / 0.1 °F)
Surface temperature -80.0 ... +250.0 °C (resolution 0.1 °C / 0.1 °F)
Units calculated:
Dew point temperature -40.0 ... +70.0 °C (resolution 0.1 °C / 0.1 °F)
Dew point distance -200.0 ... +290 °C (resolution 0.1 °C / 0.1 °F)
Enthalpy 0 ... 250 kJ/kg (resolution 0.1 kJ/kg)
Measuring ranges with STS 005 or STS 020 probes
Flow speed depending on probe (resolution 0.01 m/s)
Temperature -80.0 ... +250.0 °C (resolution 0.1 °C / 0.1 °F)
Accuracy device (± 1digit) (at nominal temperature)
Rel. atmospheric humidity ± 0.1%
Ambient temperature T1 ± 0.2%
Surface temperature T2 ± 0.5% of m.v. ± 0.5°C
Flow speed ± 0.1%
Surface temperature input T2 (NiCr-Ni, type "K")
Comparison point ± 0.5°C
Temperature drift 0.01%/K
Averaging of flow speed
Averaging period 1 .. 30 seconds
Nominal temperature 25°C
Working temperature -25 to +50°C
Relative humidity 0 to 95%r.F. (non-condensing)
Storage temperature -25 to +70°C
Housing 142 x 71 x 26 mm (L x W x D), impact-resistant ABS plastic housing, membrane key-
board, transparent panel. Front side IP65, integrated pop-up clip for table top or sus-
pended use.
Weight approx. 160 g
Interface serial interface (3.5mm jack), serial interface can be connected to RS232 or USB inter-
face of a PC via electrically isolated interface adapter GRS3100, GR3105 or USB3100
(accessories).
Power supply: 9V-battery, type IEC 6F22 (included) or additional d.c. connector (internal pin Ø 1.9 mm)
for external 10.5-12V direct voltage supply.
(suitable power supply: GNG10/3000)
Power consumption approx. 2.5 mA (incl. TFS0100)
Display 2 four digit LCDs (12.4mm high and/or 7 mm high) for measuring values, and/or for
min./ max values, hold function, etc. as well as additional pointing arrows.
Pushbuttons 6 membrane keys altogether for on/off switch, selection of thermoelements, min. and
max. value memory, hold-function etc.
Min-/max-value memory Both the max. and the min. value will be memorized for each measurement taken
Hold-function Press button to store current measuring values
Automatic-off-function Device will be automatically switched off if no key is pressed/no interface communica-
tion takes place for the time of the power-off delay. The power-off delay can be set to
values between 1 and 120 min.; it can be completely deactivated.
EMC: The device corresponds to the essential protection ratings established in the Regula-
tions of the Council for the Approximation of Legislation for the member countries re-
garding electromagnetic compatibility (2004/108/EG). Additional fault: <1%
_
+

H40.0.01.6C-09 Operating Manual GMH 3330 Page 16 of 16
13 Reshipment and Disposal
13.1 Reshipment
All devices returned to the manufacturer have to be free of any residual of measuring media
and other hazardous substances. Measuring residuals at housing or sensor may be a risk for
persons or environment
Use an adequate transport package for reshipment, especially for fully functional devices.
Please make sure that the device is protected in the package by enough packing materials.
13.2 Disposal instructions
Batteries must not be disposed in the regular domestic waste but at the designated collecting
points.
The device must not be disposed in the unsorted municipal waste! Send the device directly to
us (sufficiently stamped), if it should be disposed. We will dispose the device appropriate and
environmentally sound.
_DANGER