GREISINGER GFTH 95 User manual

H53.0.X1.6C-07
GHM Messtechnik GmbH • Standort Greisinger
Hans-Sachs-Str. 26 • D-93128 Regenstauf
+49 (0) 9402 / 9383-0 +49 (0) 9402 / 9383-33 [email protected]
Hygro-/Thermometer
Operating Manual GFTH 95
WEEE-Reg.-No. DE93889386

H53.0.X1.6C-07 Operating Manual GFTH 95 Page 2 of 6
Contents
1GENERAL NOTE..............................................................................................................................................3
2SAFETY..............................................................................................................................................................3
2.1 INTENDED USE ................................................................................................................................................3
2.2 SAFETY SIGNS AND SYMBOLS..........................................................................................................................3
2.3 SAFETY GUIDELINES........................................................................................................................................3
3PRODUCT SPECIFICATION..........................................................................................................................4
3.1 SCOPE OF SUPPLY ............................................................................................................................................4
3.2 OPERATION AND MAINTENANCE ADVICE........................................................................................................4
4NOTES FOR DEVICE FUNCTIONS..............................................................................................................5
4.1 CHOICE OF MEASURING UNIT .........................................................................................................................5
5SYSTEM MESSAGES.......................................................................................................................................5
6SPECIFICATION..............................................................................................................................................5
7RESHIPMENT AND DISPOSAL ....................................................................................................................6
7.1 RESHIPMENT....................................................................................................................................................6
7.2 DISPOSAL INSTRUCTIONS ................................................................................................................................6

H53.0.X1.6C-07 Operating Manual GFTH 95 Page 3 of 6
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.
Use the device carefully and according to its technical data (do not throw it, strike it, ...)
Protect device from dirt.
Quick-response measurement of atmospheric humidity, temperature in EDP rooms, museums, churches,
administrative and residential buildings, storage rooms, green houses, pools, production rooms, for cool-
ing technology and air conditioning as well as for building engineers and for the evaluation of damage to
buildings etc.
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.
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.

H53.0.X1.6C-07 Operating Manual GFTH 95 Page 4 of 6
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. 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 GFTH 95, incl. 9V battery block
Operation manual
3.2 Operation and maintenance advice
•Battery operation:
If „BAT„ appears in the left hand corner of the display, the battery is used up and needs to be replaced.
However, the instrument can still be operated for a short period of time. If „bAt“ is displayed in large let-
ters the battery is finally used up and has to be replaced. Measuring is no more possible.
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.
The humidity and temperature sensor are located in the protruding sensor head. Make sure that the
openings are not soiled. In case of soiling do not try to remove the dirt. Improper use may damage the
sensors. Prevent any mechanical impact on the device as this may also lead to a destruction of the
sensors (supporting material glass or ceramics)!
In the sensor area there is ESD-sensitive. Never touch or hold sensor head!
In order to guarantee accurate measurements the device has to be adjusted to ambient temperature.
If necessary wait for the temperature of the device to adjust to the ambient temperature.
If this is not possible, please proceed as follows:
Move device around while holding it at an arm's length (fanning), to speed up the exchange of air and
the temperature adjustment process. As soon as the display value is steady, readings can be made.
This procedure shall be used for temperature and for humidity measurements.
If you hold the device during measurements your body heat as well as your breath will change the
temperature and the humidity. In order to minimise these factors, hold the device at as great a distance
from the sensor as possible. Also try to prevent your breath coming into contact with the sensor. For
optimum measuring results put down device and read display from a certain distance as soon as a
constant measuring value is displayed.
Always take into account that any humidity measurements in an open space cannot be made to an ac-
curacy of more than 0.1% due to factors such as movement in the air, temperature changes etc.
A user-calibration at the users site is not possible. To ensure highest accuracies it should be returned
to the manufacturer every 12 months (when used in clean air) for checking or, if necessary: recalibra-
tion.
If desired a calibration certificate can be made (acc. ISO 9000 ff). Price upon request.
Probe tube and case are not 100% proof. If there are pressure differences between probe tube and
case, there may be made wrong measuring.
For measuring in channels with over/under pressure or strong air flow we recommend our GMH3330 or
GMH3350 with humidity probe TFS0100 or TFS0100E.
_DANGER
_DANGER


H53.0.X1.6C-07 Operating Manual GFTH 95 Page 5 of 6
4 Notes for Device Functions
4.1 Choice of Measuring Unit
The measuring unit can be chosen by means of the slide switch at the right side of the instrument.
Temp slide switch up: The instrument shows the current temperature
% RH slide switch down: The instrument shows the current humidity
5 System Messages
In case of measuring range overruns, etc. according error messages are displayed:
Er. 1 = measuring range has been exceeded
Er. 2 = meas. values have fallen below perm. range
Er. 7 = System fault - the device has detected a system fault
6 Specification
Measuring range: temperature: -20,0 °C ... +70.0 °C
humidity: 10.0 ... 95.0 %RH (recommended range for application: 30 to 80 %RH)
Resolution: temperature: 0,1 °C
humidity: 0,1 %RH
Accuracy: (±1 digit) temperature: ± 0.5 % of m. v. ± 0.1 °C (same as Pt1000 1/3 DIN)
(at nominal temperature = 25°C) humidity: ± 3 % RH (range: 30 ... 80 %RH)
Measuring probe: temperature: Pt1000
humidity: capacitive polymer humidity sensor
Response time: T90 = 15 sec.
Display: approx. 13 mm high, 3½-digit LCD-display
Operation elements: Slide switch for selection of measuring range
Nominal temperature: 25°C
Operating conditions: electronics: -20 ... 70 °C; 0 ... 80 % RH (non-condensing)
sensors: -20 ... 70 °C; 0 ... 100 %RH.
Power supply: 9V battery (in scope of supply)
Power consumption: approx. 0.1mA
Low battery warning: "BAT" automatically displayed if battery is low
Housing: impact resistant ABS-housing: approx.106 x 67 x 30 mm (HxWxD), in addition,
sensor head protruding vertically, length 35 mm, diameter 14 mm,
overall length 141 mm.
Weight: approx. 135g incl. battery
EMC: The device 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 (2004/108/EG).
Additional fault: <1%

H53.0.X1.6C-07 Operating Manual GFTH 95 Page 6 of 6
7 Reshipment and Disposal
7.1 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.
7.2 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