as of version V1.0 GMH 2710 /GMH2710-K
Operating Manual Pt100 Precision Thermometer
WEEE-Reg.-Nr. DE 93889386
H81.0.01.6C-05
GREISINGER electronic GmbH
D - 93128 Regenstauf, Hans-Sachs-Straße 26
Phone: 09402 / 9383-0, fax: 09402 / 9383-33, eMail: info@greisinger.de
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 2 of 8
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Index
1 DESIGNATED USE ....................................................................................................................................2
2 GENERAL NOTE .......................................................................................................................................2
3 SAFETY REQUIREMENTS ......................................................................................................................3
4 DISPLAY AND CONTROL ELEMENTS ................................................................................................3
4.1 DISPLAY ELEMENTS .................................................................................................................................3
4.2 CONTROL ELEMENTS ................................................................................................................................3
4.3 POP-UP CLIP .............................................................................................................................................4
5 START OF OPERATION ..........................................................................................................................4
6 BASICS .........................................................................................................................................................5
7 CONFIGURATION OF THE DEVICE ....................................................................................................5
8 ADJUSTMENT ............................................................................................................................................6
9 REPLACING BATTERIES........................................................................................................................6
10 ERROR AND SYSTEM MESSAGES ...................................................................................................7
11 ACCURACY INSPECTION: ADJUSTMENT /UPDATE SERVICE ................................................7
12 DISPOSAL NOTES..................................................................................................................................7
13 TECHNICAL DATA................................................................................................................................7
1 Designated Use
The device is measuring temperature in °C or °F.
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, …).
2 General Note
Read this document carefully and get used to the operation of the device before you use it. Keep
this document within reach for consulting in case of doubt.
If the device is stored at temperatures above 50°C the battery has to be removed from the device.
NOTE: We recommend taking out battery if device is not used for a longer period of time.
Risk of leakage!
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 3 of 8
1: Main display
Display of the current temperature
2: Secondary display
On demand: Display of MIN , Max or holdvalue, with MIN/MAX/HLD-symbols
Key 1:
on/off key
Key 2:
max/min
press shortly: minimum value
press again: maximum value
press again: return to standard display
press for 2 sec.: reset minimum and maximum values
Key 3:
hold: (auto hold deactivated)
press shortly: The measuring current value is ‚frozen‘
(hold-function), ‘HLD’ is displayed
hold: (auto hold activated)
press shortly: Restart “catching” of stable value
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3 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".
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.
2. WARNING: 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 or maintenance.
3. WARNING: Do not use these products as safety or emergency stop devices or in any other application
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 material
damage.
4 Display and Control Elements
4.1 Display elements
4.2 Control elements
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 4 of 8
Pop-up clip closed
Pop-up clip at position 90°
Pop-up clip at position 180°
Device attached to a belt
Device set up on a table
Device suspended from
magnetic holder
GMH 1300
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4.3 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.
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.
5 Start of Operation
Switch the device on with the key . After segment test the device displays some information to
its configuration:
if there is a offset adjustment (p.r.t. chapter 8)
if there is a slope adjustment (p.r.t. chapter 8)
P..OFF if the automatic-off-function is activated (p.r.t chapter 7)
The device is ready for measuring afterwards.
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 5 of 8
Parameter
Value
Information
button
buttons
UNIT
Display unit factory setting: °C
°C
Measuring value displayed in °Celsius
°F
Measuring value displayed in °Fahrenheit
AUTO
HLD
Auto Hold-Function factory setting:: oFF
ON
Auto Hold activated: automatic holding of the measured value, as soon as it is
stabilized.
OFF
Auto Hold deactivated: Value is frozen on keypress (hold)
P.OFF
Auto Power-Off (turn-off delay) factory setting: 20 min.
1 … 120
Auto Power-Off (turn-off delay) in minutes. If no key is pressed for the time
adjusted here, the device is automatically switched off (adjustable 1 … 120 min)
OF
Auto power-off is deactivated (continuous operation)
INIT
Restore factory settings
NO
Parameters are not changed to factory settings.
YES
ATTENTION: All parameter are changed to factory settings.
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6 Basics
Probe Precision/Device Precision
The device has a very good system accuracy (please refer to technical data). This is due to the calibration of
the probe acc. To the connected instrument plus the use of precise measurement electronics and premium
Pt1000 sensor elements
Heat loss caused by probe construction:
Especially when measuring temperatures which deviate very much from the ambient temperature, measuring
errors often occur if the heat loss caused by the probe is not considered. When measuring fluids therefore
the probe should be emerged sufficiently deep (at least 5 times of diameter, i.e.>15mm) and be stirred
continuously. When measuring gases the probe should also emerge as deep as possible in the gas to be
measured (e.g. when measuring in channel/pipes) and the gas should flow around the probe at sufficient
flow.
Allowable Temperature Range Of Probes
For the two variants there are different application areas:
GMH 2710: (black plastic handle)
The allowable temperature range of -200 to 200 °C only is valid for the probe tube, the (plastic) handle must
not be heated above 80°C, the cable utmost 105°C! Therefore only front part of the stainless steel tube is
allowed to be heated above 80°C!
GMH 2710-K (white Teflon handle)
Both cable and handle are capable of -200 bis +250°C!
7 Configuration of the Device
Follow these instructions to configure the functions of the device:
Switch the device on.
Press and together until the first parameter “UNIT” is displayed.
Set parameter with = up or = down.
Jump to the next parameter by pressing .
Press again to store changed settings, the device restarts (segment test).
NOTE: If there is no key pressed within the menu mode within 2 minutes, the configuration will be
cancelled, the entered settings are lost!
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 6 of 8
Parameter
Value
Information
button
buttons
OFFSET correction factory setting: oFF = 0.0°C
OFF
No offset correction
-2.5 … 2.5 °C
or
-4.5…4.5 °F
Value of offset correction
Slope correction factory setting: oFF= 0%
OFF
No slope correction
-5.00 … 5.00
Value of slope correction in %
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8 Adjustment
The instrument can be adjusted, assuming that: Reliable references are available, such as icewater regulated precision water baths or similar.
:
Displayed value °C =(measured value °C - OFFS) * (1 + slope correction / 100 )
Displayed value °F =(measured value °F - 32 °F - OFFS) * (1 + slope correction / 100 )
Follow these instructions to adjust the device:
Switch the device on.
Press and together until the first parameter “0FFS” is displayed.
Set parameter with = up or = down
Jump to the next parameter by pressing .
Press again to store changed settings, the device restarts (segment test).
NOTE: If there is no key pressed within the menu mode within 2 minutes, the configuration will
be cancelled, the entered settings are lost!
9 Replacing Batteries
Before changing batteries, please read the following instruction and follow it step by step.
Not following the instruction may cause harm to the instrument or the protection against ingress of water and
dust may be lost!
Avoid unnecessary opening of the instrument!
1. Open the 3 Phillips screws at the backside of the instrument.
2. Lay down the still closed instrument, so that the display side points upwards.
The lower half of the housing incl. The electronics should be kept lying down during battery change.
This avoids loss of the sealing rings of the screw holes.
3. Lift upper half of housing. Keep an eye on the three function keys, to be sure not to damage them.
4. Change carefully the two batteries (Type: AAA).
5. Close the housing, taking care that it is positioned correctly, otherwise the sealing may be damaged.
Afterwards press the two halves together, lay the instrument with display pointing downwards and
screw it together again, beginning with the single lower screw.
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 7 of 8
ERR. 1
Value exceeding measuring range, value too high or cable/sensor broken
ERR. 2
Value exceeding measuring range, value too low or cable/sensor shorted
ERR. 7
System error – the device has detected a system error (device defective or not within
working temperature)
The blinking bAt display indicates low battery voltage, device will continue to work for a
short time.
The battery is consumed and has to be changed. Measurements are no longer
possible.
Dispense exhausted batteries at destined gathering places.
This device must not be disposed as ‘residual waste’
To dispose this device, please send it directly to us (adequately stamped).
We will dispose it appropriately and environmentally friendly.
Measurement
Resistive temperature measuring Pt1000
Range
GMH 2710: -200,0°C to 200,0°C / -200,0°F to 392,0°F
GMH 2710-K: -200,0°C to 250,0°C / -200,0°F to 482,0°F
Resolution
0.1°C / 0.1°F
Accuracy
-20.0 … 100.0°C: +/-0.1°C +/-1 digits
-70.0 … 200.0(250.0) °C: +/-0,1 % of measured value +/-2 digits
T90
< 10s in water
Display
Two 4 ½ digits LCD’s (12.4 mm high and 7 mm high) for temperature, min./ max
values, hold function, etc. as well as additional pointing arrows.
Hold function
Press button to freeze current value.
Auto hold: a stable value will automatically be captured with “HLD”
Probe:
Stainless steel tube d = 3 mm, l = 100 mm
GMH 2710
Plastic handle 135 mm long (max. 80°C),
1 m PVC cable (-20…105°C)
GMH 2710-K
Teflon handle 90 mm incl. Stainless steel bending protection (max. 250°C),
1 m Teflon cable (max. 250°C)
Working temperature
-25 to 50°C
Storage temperature
-25 to 70°C
Power supply
2x AAA Alkaline cells (included)
Power consumption
< 0.25 mA (battery life time: more than 4000 hours for alkaline battery)
battery state display
“bAt” displayed if battery used, warning: “bAt” in secondary display
Auto off-function
Device will be automatically switched off if not operated for longer time
(adjustable from 1..120 min)
Housing
impact-resistant ABS plastic housing
Protection rate
IP65 (splash water resistant) and IP67 (waterproof: short time 1 meter)
Dimension
Approx. 154 x 81 x 31 mm (H x W x D)
Weight
Approx. 190 g 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 error:
< 1% FS
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10 Error and System Messages
11 Accuracy Inspection: Adjustment /Update Service
You can send the device to the manufacture or retailer for adjustment and inspection.
Moreover the manufacturer can do the latest software update. This ensures that future
improvements are provided to owners of older devices in a cost-saving way. You can display the
current software version if you do not release the on/off button after you switched the device on, but
hold it for more than 5 seconds. (i.e. “r. 1.0”)
12 Disposal Notes
13 Technical Data
H81.0.01.6C-05 Operating Manual GMH 2710 / GMH 2710-K page 8 of 8
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