GREISINGER GMH 1150 User manual

H47.0.01.6C-03
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 Quick-Response Thermometer
Operating Manual GMH 1150
WEEE-Reg.-No. DE93889386

H47.0.01.6C-03 Operating Manual GMH1150 Page 2 of 6
Contents
1GENERAL NOTE..............................................................................................................................................2
2SAFETY..............................................................................................................................................................2
2.1 INTENDED USE ................................................................................................................................................2
2.2 SAFETY SIGNS AND SYMBOLS..........................................................................................................................3
2.3 SAFETY GUIDELINES........................................................................................................................................3
3PRODUCT SPECIFICATION..........................................................................................................................3
3.1 SCOPE OF SUPPLY ............................................................................................................................................3
3.2 OPERATION AND MAINTENANCE ADVICE........................................................................................................4
4RECALIBRATION............................................................................................................................................4
5POP-UP CLIP.....................................................................................................................................................5
6SPECIFICATION..............................................................................................................................................6
7RESHIPMENT AND DISPOSAL ....................................................................................................................6
7.1 RESHIPMENT....................................................................................................................................................6
7.2 DISPOSAL INSTRUCTIONS ................................................................................................................................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 the device from dirt.
The GMH1150 is able to measure the temperature in liquids, air/gas, soft media and on smallest surface
depending on what probe is being used.

H47.0.01.6C-03 Operating Manual GMH1150 Page 3 of 6
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
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".
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. This device must not be used at potentially explosive areas! The usage of this device at
potentially explosive areas increases danger of deflagration, explosion or fire due to
sparking.
4. If device is to be connected to other devices the circuitry has to be designed most care-
fully. Internal connection in third party units (e.g. connection GND and earth) may result
in non-permissible voltages impairing or destroying the device or another device con-
nected.
5. If device is operated with a defective mains power supply (short circuit from mains volt-
age to output voltage) this may result in hazardous voltages at the device (e.g. sensor
socket).
3 Product Specification
3.1 Scope of supply
The scope of supply includes:
Device GMH1150, incl. 9V battery block
Operation Manual
_DANGER
_DANGER
_DANGER


H47.0.01.6C-03 Operating Manual GMH1150 Page 4 of 6
3.2 Operation and maintenance advice
•Battery operation
Make sure to apply correct operating voltage as low or damaged battery will lead to measuring inaccura-
cies. If "BAT" is shown in the display or are the measurements obviously wrong the battery has been used
up and needs to be replaced.
Please note: If the battery voltage falls even lower the voltage may not be sufficient for "BAT" to be dis-
played so that there will be no "BAT" indication although the battery has been used up. We recommend to
make it a rule to always check the battery if the values indicated seem to be completely out of range.
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.
Mains operation with power supply
When using a power supply please note that operating voltage has to be 10 to 12 V DC.
Do not apply overvoltage!! Cheap 12V-power supplies often have excessive no-load voltage.
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.
Treat device carefully. Use only in accordance with above specification. (do not throw, hit against etc.).
Protect plug and socket from soiling.
Make sure that sensor and device are always subjected to the same temperature, i.e. try to avoid hold-
ing sensor plug in your hand for a longer period of time as well as subjecting device to an additional
heat source as this may result in measuring inaccuracies.
The length of measuring sensor (GTF 300) can be reduced as desired so that it will be fully operational
again after sensor has been broken. To do so, please strip both wire ends for approx. 10mm and twist
well. Measurements are not possible as long as wire ends are exposed.
4 Recalibration
The measuring device will be calibrated before leaving our works. A recalibration is, therefore, not
necessary. If you want to calibrate the device for an existing sensor, please proceed as follows: (calibrate
0°C before scale as otherwise correct adjustment cannot be guaranteed)
Normally sensor adjustment by means of 0° C potentiometer is sufficient.
We do not recommend scale compensation in order to maintain the
specified accuracy of the device. If an accurate reference temperature is
available, choose highest temperature possible to calibrate the device.
Calibration point 0°C: Put ice cubes in a glass and pour cold water till ice
cubes are almost covered. Put sensor into glass, wait approx. 15 minutes,
then stir water with a spoon handle. Wait for stable value to be displayed,
then turn zero point potentiometer (NP, Potentiometer next to sensor connection)
by means of a screw driver till display shows "000”.
Calibration point scale: To set the pitch (Scale) a fixed reference temperature is
required (the higher the better). Subject sensor to this temperature and set respective display value ac-
cording to correction table value (e.g. reference temperature 700°C -> value to be set: 711) by means of
pitch potentiometer (outer potentiometer).
Please note that boiling water should not be used as a temperature reference as the boiling temperature
is dependent on the atmospheric pressure. (If using a reference thermometer stating the precise tempera-
ture you may, however even use boiling water.)
Please note: During the waiting time the device should have assumed ambient temperature (we recom-
mend a temperature of 20 to 25°C). Please avoid holding device in your hand as well as subjecting it to
an additional heat source (e.g. radiator, lamp, sun).


H47.0.01.6C-03 Operating Manual GMH1150 Page 5 of 6
5 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
C o r r e c t i o n t a b l e :
Temperature
Display
Temperature
Display
Temperature
Display
Temperature
Display
Temperature
Display
Temperature
Display
-50
-46
160
160
370
369
580
587
790
802
1000
1007
-40
-37
170
169
380
379
590
597
800
812
1010
1016
-30
-28
180
179
390
390
600
607
810
822
1020
1026
-20
-19
190
189
400
400
610
618
820
832
1030
1035
-10
-10
200
198
410
410
620
628
830
842
1040
1045
0
0
210
208
420
421
630
639
840
852
1050
1054
10
10
220
218
430
431
640
649
850
862
1060
1063
20
20
230
228
440
441
650
659
860
871
1070
1073
30
29
240
238
450
452
660
670
870
881
1080
1082
40
39
250
248
460
462
670
680
880
891
1090
1091
50
49
260
258
470
472
680
690
890
901
1100
1100
60
59
270
268
480
483
690
700
900
911
1110
1110
70
70
280
278
490
493
700
711
910
920
1120
1119
80
80
290
288
500
504
710
721
920
930
1130
1128
90
90
300
298
510
514
720
731
930
940
1140
1137
100
100
310
308
520
524
730
741
940
949
1150
1146
110
110
320
318
530
535
740
751
950
959
1160
1155
120
120
330
328
540
545
750
762
960
969
1170
1164
130
130
340
339
550
556
760
772
970
978
1180
1173
140
140
350
349
560
566
770
782
980
988
150
150
360
359
570
576
780
792
990
997

H47.0.01.6C-03 Operating Manual GMH1150 Page 6 of 6
6 Specification
Measuring range: -50 … +1150°C
Resolution: 1°C
Accuracy: -20 …+550°C and 920 …1150°C: < 1% ± 1 Digit;
550 …920°C: < 1,5% ± 1 Digit.
For more detailed values please refer to att. correction table.
Sensor: NiCr-Ni, acc. to ½ DIN 43710, for plug-in operation.
(Not included in scope off supply)
Special design sensors incl. one of the following probes:
GTF 300: 2 teflon-isolated, helically winded thermoelement wires with a dia. of 0,2mm
each, length approx. 1m with miniature flat plug, free from thermo-voltage. Sen-
sor is suitable for surface and immersion measurements. Response time in liq-
uids 0,3sec, Measuring range: -65 … 300°C.
Nominal temperature: 25°C
Working temperature: 0 …+45°C, please avoid quick temperature changes, if possible, otherwise a
temperature adjustment time of approx. 15 minutes has to be taken into
account.
Atmospheric humidity: 0 to 80%r.h. (not-condensing)
Display: approx. 13mm high, 3 ½- digit LCD
Power supply: 9V-Battery, type IEC 6F22 as well as additional d.c. connector
(internal pin 1.9mm) for external 10-12V direct voltage supply.
(suitable power supply: GNG10/3000)
Battery service life: approx. 700 operating hours
Low battery warning: „BAT“ displayed automatically in case of low battery.
Dimensions of case: 142 x 71 x 26 mm (H x W x D), impact-resistant ABS plastic housing, front side
IP65, integrated pop-up clip for table top or suspended use.
Weight: approx. 160g (incl. Battery)
EMC: The device corresponds to the essential protection ratings established in the
Directives of the European Parliament and of the council on the approximation
of the laws of the member states relating to the electromagnetic compatibility
(2004/108/EG).
Additional error: <1%
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