GREISINGER GMH 3330 User manual

H40.0.01.6C-03 page 1 of 10
Operating Manual
Hand-held Measuring Device
GMH 3330
for Atmospheric Humidity, Temperature,
Dew Point, Dew Point Distance, Enthalpy
and
Flow Speed

H40.0.01.6C-03 page 2 of 10
2
3
1
321
How to Operate and Maintain Device:
a.) When to replace battery:
If ! and ´bAt´ are shown in the lower display the battery has been used up and needs to be replaced. The device will, however,,
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.
Please note: We recommend to take out battery if device is not used for a longer period of time.
b) 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 the specified sensors (p.r.t. ´connections´). Connecting the instrument to others, may damaged the instrument and the
probe.
c) Switch off instrument to change sensors.
d) 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.
e) To disconnect sensor/probe, the interface or the power supply device do not pull at the cable but at the plug.
f) Mains operation:
When using a power supply device please note that operating voltage has to be 10.5 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-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 GNG10/3000.
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.
Interface: Connection for electr. isolated interface adapter
(accessories: GRS 3100)
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 "Specification".
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 may
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 and/or maintenance.
Connections
The mains socket is located at the left side of the measuring instrument.
Temperature input T2: Connection for NiCr-Ni-temperature
probe (type K) for surface temperature measurements etc.
Anschluß für NiCr-Ni Temperaturfühler (Typ K)
Connection for meas. probes: the following sensor types can
be connected:
-TFS 0100 (atmospheric humidity and temperature T1)
-STS 020 (flow speed air, 0..20.00m/s)
-STS 005 (flow speed water, 0..5.00m/s)

H40.0.01.6C-03 page 3 of 10
%
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
MAX
MIN HLD
%
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
123
456
ON
OFF max CAL
StoreminSet
Menu Quit
1
1
Displays
Main display
Pushbuttons
3
5
4
2
1
3
On/off key
2Secondary display
2
1
Special display - elements:
2
5
4
12 3
1
2
4
Warning triangle:indicates a low battery
3
4
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 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
Use the "Set"-key (key 4) to change over between the measuring results in
the secondary display.
-STS 005 and/or STS 020:
Main display m/s.: flow speed
Secondary display t.AVG: time left till average flow value in
seconds will be displayed
withtemperatureprobeatT2assoonastheaveragetimehasbeenreached:
Secondary display T2:temperature
CAL-arrow:indicates that a humidity calibration is carried out
at the moment.
Min/Max/Hold: shows if a min., max.or hold value is
displayed in either the main or the secondary display.
Corr-arrow: indicates active status of correction factor (Corr)
or zero displacement (Offset) of the temperature channel
displayed.
min/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 change settings
CAL: (for TFS 0100-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 will be activated
Store/Quit:
Measurement: Hold current measuring value ('HLD' in display)
for flow measurements in the 'AVGHold' mode:
start new measurement
Set/Menu: Acknowledge setting, return to measuring.

H40.0.01.6C-03 page 4 of 10
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
5
min
2max
5
min
5
min
2max
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
5
min
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
5
min
°C
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
Device Configuration
For configuration of the device press "Set"-key (key 4) for 2 seconds.
Choose between the individual values that can be set by pressing the "Set"-key (key 4) again.
The individual values are changed by pressing the keys "5" (key 2) or "6" (key 5).
Use key "Store" (key 6) to leave configuration and to store settings.
Any items referring either to measurements using flow or humidity sensor will only be displayed if the relevant measuring
sensor has been connected.
't.AVG':SettingofAveragingPeriod (only STS005/020)
1 .. 30:Time for averaging (in seconds) during flow measuring
Cont: continuous averaging - the average value calculated from the measurings
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.
'AVG': Selection of Averaging Proceedings for Flow Measurement (only STS005/020)
'Unit t': Selection of Temperature Unit °C /°F
'Offset T1': Zero Displacement of Sensor Temperature T1 (only TFS0100)
'Offset T2': Zero Displacement of Temperature T2
°C:All temperature values in degrees Celsius
°F:All temperature values in degrees Fahrenheit
-10.0°C...10.0°C The zero point of the measurement achieved at T1 will be displaced
and/or by this value set.
-18.0°F...18.0°F:
off:Zero displacement for T1 has been deactivated. (=0.0°)
-10.0°C...10.0°C The zero point of the measurement achieved at T2 will be displaced
and/or by this value set.
-18.0°F...18.0°F:
off:Zero displacement for T2 has been deactivated. (=0.0°)
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' has been set, this value will be shown shortly after the device has been
switched on. During operation it will be identified by the Corr-arrow in the display.

H40.0.01.6C-03 page 5 of 10
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
5
min
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
5
min
Measurements Using the 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 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.
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 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.
1.001 .. 1.200: The temperature value (referring to 0°C or 32°F) will be mutiplied by this
factor.
off:Factor deactivated (=1.000)
2max
5
min
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.
'Address': Selection of Base Address
01, 11, 21, ..., 91:Base address for interface comunication.
Channel 1 will be addressed by the base address set, channels 2
and 3 will have the following addresses.
(Example: baseaddress 21 - channel 1 = 21, channel 2 = 22, channel 3 = 23)
1...120: Power-off delay in minutes. Device will be automatically switched off as soon
as this time has elapsed if no key is pressed/no interface communication takes
place.
off:automatic power-off function deactivated (continuous operation, e.g. in case of
mains operation)
'Power.off': Selection of Power-Off Delay
Corr T2': Selection of Display Correction Factor for Temperature T2
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 my means of the Corr-arrow in the display
temperature displayed[°C] = temperature measured[°C] * Corr
or temperature displayed[°F] = (temperature measured[°F]-32°F) * Corr + 32°F
Standard setting: 'off' =1.000
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆

H40.0.01.6C-03 page 6 of 10
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 iused 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..
Measurements Using the Flow Measuring Probes STS005 a.STS020
Two types of measuring probes are available for flow speed measurements:
Please note: -useSTS 005 to measure waterflow
-useSTS 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 accuracy.
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 measuring value two
averaging functions have been integrated in the instrument.
ContinuousAveraging
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 averagevalue 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-03 page 7 of 10
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 (GRS3100 or GRS3105). In order to avoid transmission errors, there are several
security checks implemented.
The following standard software packagesare available for data transfer:
-EBS9M 9-channel software to display the humidity (channel1),the temperature. (channel 2, 3),...
-EASYCONTROL:Universal multi-channel software (EASYBUS-, RS485-, or GMH3000- operation possible)
for real-time recording and presentation of measuring data in the ACCESS®-data base format.
In case you want to develop your own software we offer aGMH3000-development package including
- a universally applicable 32 bit Windows functions library ('GMH3000.DLL') with documentation that can be used by the
most programming languages.
- Programming examples Visual Basic 4.0, Testpoint (Keithley Windows measuring software)
The following interface functions will be supported:
Channel DLL-
Code Name/function
1 2 3 4 5 6
x x x x x x 0Read nominal value
x x x x x x 3Read system status
x12 Read ID number
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
x208 Read channel count
x x 216 Read offset correction
x218 Read corr. factor (1000..1200)
x240 Reset unit
x254 Read programm identification
For TFS 0100:
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 STS 005 / STS 020
Channel 1: flow speed
Channel 3: temperature T2
Channel 2, 4, 5, 6: not supported.
For NiCr-Ni (withoutTFS../STS..)
Channel 3: temperature T2
Channel 1, 2, 4, 5, 6: not supported.
functions as "Read ID number", "Read channel count" still works with channel 1.

H40.0.01.6C-03 page 8 of 10
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
%
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
2max
5
min
Name RH at 20°C Calibrationdevice
KNO3 93% ---
NaCl 76% GFN 76
MgCl2 33% GFN 33
Silica-Gel 0% ---
%
r.H.
Td T2Td
m/s
kJ/kg
AL Logg
T1Corr
CAL
∆
manuel 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 during calibration')
How to carry out calibration
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 thies 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:
3) Calibration point 2
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 displayed.
2) Calibration point 1
automaticdetection(acceptable humidity variables see above)
Display will switch over between the acceptable variables.
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.
The calibration device GFN XX have been optimized for application with
TFS 0100. To ensure highly accurate calibration, we recommend to use
these humidity variables only. For more detailed information please refer
to the relevant operating manual.
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"-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"
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 dependance 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.

H40.0.01.6C-03 page 9 of 10
No probe/sensor connected connect probe/sensor
probe/sensor damaged probe/sensor defective -> return to manufacturer for repair
Error and System Messages
Display Description Remedy
Cal correct humidity variable ?
Err.1 Deviation too high (zero point) no -> probe no longer within permissible tolerances, return to
manufacturer for recalibration
Cal difference has to be at least 40% if values are entered manually
Err.2 Difference point1-point2 too small select suitable values
Cal
Err.3 Incorrect temperature calibration is only permissible in the temp. range from 5 ... 40°C
Error and System Messages During TFS0100 Calibration
Display Description Remedy
No display
or
characters
confused
Battery voltage too low replace battery
If mains op.: power supply defective
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
Low battery voltage replace battery
If mains operation: wrong voltage replace power supply, if fault continues to exist: device damaged
Low battery voltage, device will only replace battery
continue operation for a short time
Err.1 Values exceeding measuring range Check: are there any values exceeding the measuring
range specified? ->meas. value too high
Sensor/cabledefective -> replace
Err.2 Values below measuring range check: are there any values below the measuring
range specified? ->meas. value too low
Sensor/cabledefective -> replace
Err.3 Values exceeding display range
Err.4 Values below display range
Err.7 System fault switch on again: if fault continues to exist, device is damaged ->
return to manufacturer for repair
Err.9 No probe/sensor existing connect probe/sensor
or probe/sensor defective probe/sensor damaged -> return to manufacturer for repair
Er.11 Value cannot be calculated One measuring variable required for calculation is missing (no
sensor) or incorrect (overflow/underflow)

H40.0.01.6C-03 page 10 of 10
Specification
Measuring ranges
with TFS 0100 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)
with STS 005 and/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:
Comparison point ± 0,5°C
Temperature drift 0,01%/K
Nominal temperature 25°C
Working temperature 0 to +50°C
Relative humidity 0 to +95%r.h. (non-condensing)
Storage temperature -20 to +70°C
Housing dimensions 142 x 71 x 26 mm (L x W x D)
impact-resistant ABS plastic housing, membrane keyboard, transparent panel. Front side IP65,
integrated pop-up clip for table top or suspended use.
Weight approx. 155 g
Interface serial interface (3.5mm jack), serial interface can be connected to RS232 interface of a PC via
electrically isolated interface adapter GRS3100 or GRS3105 (see accessories).
Power supply 9V-battery, type IEC6F22 (included) as well as additional d.c.connector (dia of internal pin 1.9 mm)
for external 10.5-12V direct voltage supply. _+(suitablepowersupply: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 communication 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 GMH3330 corresponds to the essential protection ratings established in the Regulations of
the Council for the Approximation of Legislation for the member countries regarding
electromagnetic compatibility (89/336/EWG). Additional fault: <1%