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.