GREISINGER G 1500 User manual

H86.0.1X.6C-01
GHM Messtechnik GmbH • Standort Greisinger
Hans-Sachs-Str. 26 • 93128 Regenstauf • GERMANY
 +49 (0) 9402 / 9383-0  +49 (0) 9402 / 9383-33  [e-mail]
Operating manual
pH-Meter
waterproof
as of version 1.0 G
1500

Please carefully read these instructions
before use!
WEEE-Reg.-Nr. DE 93889386

Please consider the safety instructions!

Please keep for future reference!

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Index
1GENERAL NOTE ...............................................................................................................3
2SAFETY................................................................................................................................3
2.1 INTENDED USE ..................................................................................................................3
2.2 SAFETY SIGNS AND SYMBOLS ............................................................................................3
2.3 SAFETY GUIDELINES..........................................................................................................3
3PRODUCT DESCRIPTION...............................................................................................5
3.1 SCOPE OF DELIVERY ..........................................................................................................5
3.2 OPERATING AND MAINTENANCE.......................................................................................5
4OPERATION.......................................................................................................................6
4.1 DISPLAY ELEMENTS...........................................................................................................6
4.2 PUSHBUTTONS...................................................................................................................6
4.3 CONNECTIONS...................................................................................................................7
5START OPERATION.........................................................................................................7
6BASICS OF THE MEASUREMENT................................................................................8
6.1 PHMEASUREMENT ............................................................................................................8
6.2 PHELECTRODES ................................................................................................................8
6.2.1 Design.........................................................................................................................8
6.2.2 pH electrode GE 114 WD...........................................................................................8
6.2.3 Care and maintenance ...............................................................................................9
6.2.4 Further information....................................................................................................9
6.2.5 Choosing a pH electrode..........................................................................................10
7CONFIGURATION...........................................................................................................10
8CALIBRATION OF THE PH MEASUREMENT.........................................................12
8.1 GENERAL INFORMATION..................................................................................................12
8.2 PREPARATIONS................................................................................................................12
8.3 CONDUCTING A 1-POINT CALIBRATION............................................................................12
8.4 CONDUCTING A 2-POINT CALIBRATION............................................................................13
8.5 COMPLETION OF THE CALIBRATION.................................................................................13
9ACCURACY CHECK / ADJUSTMENT SERVICE.....................................................14
10 REPLACING BATTERIES...........................................................................................14
11 FAULT AND SYSTEM MESSAGES...........................................................................15
11.1 ERROR MESSAGES FOR MEASUREMENT.........................................................................15
11.2 ERROR MESSAGES FOR CALIBRATION ...........................................................................15
12 RESHIPMENT AND DISPOSAL.................................................................................16
12.1 RESHIPMENT.................................................................................................................16
12.2 DISPOSAL .....................................................................................................................16
13 SPECIFICATION...........................................................................................................17

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1 General note
Read through this document attentively and make yourself familiar to the operation of
the device before you use it. Keep this document in a ready-to-hand way in order to
be able to look up in the case of doubt.
2 Safety
2.1 Intended Use
The device is designed for measuring the pH value by means of suitable electrodes.
It is equipped with a BNC connector for connecting different pH electrodes. The
choice of a suitable electrode allows the device to be used in diverse applications.
Personnel which starts up, operates and maintains the device has to have sufficient
knowledge of the measuring procedure and the meaning of the resulting measured
values, this manual delivers a valuable help for this. The instructions of the manual
have to be understood, regarded and followed.
The manufacturer will assume no liability or warranty in case of usage for other
purpose than the intended one, ignoring this manual, operating by unqualified staff
as well as unauthorized modifications to the device.
2.2 Safety signs and symbols
Warnings are labeled in this document with the followings signs:
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
situations which can provoke damage to the device or environment at
non-observance.
Note! This symbol point out processes which can indirectly influence
operation, possibly cause incorrect measurement 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 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.

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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
(chapter 13 Specification).
2. 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. 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. 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.
5. The electrodes contain 3 mol/l KCl or 1 mol/l KNO3.
First aid measures
In case of contact with skin: wash off with plenty of water
In case of contact with eyes: rinse with plenty of water while holding
the eyelid open and consult an eye
doctor, if necessary.
If swallowed: drink plenty of water. In case of
nausea, consult a doctor.
6. This device is not constructed for use in medical applications.
7. Electrodes for measuring the pH value (including those with a plastic
shaft) consist partly of glass, which can cause injuries if broken.
Especially when used for measuring foods there is a danger of damage
to the electrode.
Therefore, always observe the following:
- Check the electrode for damage before and after every
measurement.
- When measuring foods, always use small samples for the
measurement and discard afterwards.

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3 Product description
3.1 Scope of delivery
The scope of supply includes:
•Device with 2 batteries type AA
•Electrode for measuring the pH value (not G 1500-GL)
•Operating Manual
•Calibration protocol
3.2 Operating and Maintenance
1.Battery operation:
If the battery has been used up and needs to be replaced, the empty frame of the
battery symbol starts blinking. The device will, however, continue operating
correctly for a certain time.
The battery has been completely used up, if ´bAt´ is shown in the main display.
Battery replacement: (see chapter 10 Replacing batteries).
The battery has to be removed, when storing device above 50°C.
We recommend taking out the batteries if device is not used for a
longer period of time.
2.Treat device and probes carefully. Use only in accordance with above specification.
(do not throw, hit against etc.). Protect plug and socket from soiling.
3.The pH electrode should be kept moist to prevent the membrane from drying out.
We recommend storage in 3 mol/l KCl (our type: KCL 3 M, with the exception of
GE 103). Extended storage in distilled or deionised water will result in depletion of
the reference electrolytes.
4.The electrode should be stored in a dry area at a temperature between 10 °C and
30 °C. Below -5 °C the electrolytes can freeze, which will destroy the electrode.
5.The pH electrode that is included (not G 1500-GL) should be inserted at an angle
of 90°±45° from the horizontal. This also applies to many other electrodes. For
more information, consult the respective operating manual.

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4 Operation
4.1 Display elements
Display
“segment test“
Display “unstable“
1
Battery symbol: Rating of battery state
2
Unit display: Measured value units with
stability indicator (~ is
displayed until the
measurement is stable, inner
segments rotate) or display for
“min/max/hold”
3
Main display: Current pH Value or value
“min/max/hold”
4
Auxiliary display: Corresponding temperature
value (to the value shown on
the main display) with unit
5
no function
4.2 Pushbuttons
Overhead-display
Key on/off, backlight
press shortly: switch on device
switch on/off backlight
press long: switch off device
In the menu:
press long: discard changes,
device is switched off
Function key:
press shortly: hold and freeze measured
value
press long: invoke menu
In the display “The saved value”:
press shortly: return to the measured
value display
In the menu:
press shortly: select next parameter
press long: save settings,
exit menu
Keys up/down:
press shortly: indicated value “min. or
max”
press long: reset the “min-, / max-”value
(to current measuring value)
In the menu:
change the selected current parameter
Turn display (”Overhead-display“)
press both keys until display is turned
(orientation will be saved)

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4.3 Connections
BNC socket:
connection for electrode
Usage of BNC plug:
Lock/ unlock with turnable ring at
cable socket
Protect contacts from soiling and moisture!
The connections are only waterproofed when a plug declared as
waterproof is connected.
5 Start operation
Be sure that suitable batteries are inserted (see chapter 10 Replacing batteries).
Turn device on via key “on/off”.
After segment test the device displays some information about his configuration in the
“auxiliary display”:
POFF If “auto-power-off” is active - after the set time the instrument is switched off if
no key is pressed (see chapter 7Configuration).
[AL If there is no valid calibration >[AL< flashes on the unit display.
The device must be calibrated to the electrode prior to starting the
measurement. (see chapter 8 Calibration of the pH measurement)
If the electrode is replaced, the device must be recalibrated.
After that the device is ready for measuring.

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6 Basics of the measurement
6.1 pH measurement
The pH value describes the acidic or alkaline behaviour of an aqueous solution.
pH values below 7 are acidic (smaller values indicate higher acidity), and values
above 7 are alkaline; pH 7 = neutral.
To determine the pH value of a solution, it should always be recorded together with
the measuring temperature, for example: pH 5.87; 23.0 °C.
The reason: Most liquids change their pH value with the temperature.
The pH measurement is very precise, but also sensitive. The measured signals are
very weak (high-ohmic), especially when measured in weak or low-ion media.
Therefore, always take measures to
- avoid interference (electrostatic charges, etc.)
- keep plug contacts clean and dry
- prevent electrodes (except special waterproof versions) from extended
immersion above the shaft
- calibrate the electrode at sufficient intervals (see below). The frequency of
calibration can range from every hour to several weeks, depending on the
electrode and the application.
- use a suitable electrode. See chapter 6.2.5
6.2 pH electrodes
6.2.1 Design
Generally, single-rod measuring chains are used, which
means that all necessary components are integrated in a
single electrode (including the reference electrode).
The diaphragm, which establishes a connection between the
electrolyte and the liquid to be measured, can be designed in
different ways. Clogging / soiling of the diaphragm is a
frequent cause of a malfunctioning or sluggish electrode.
Always handle the glass membrane with extreme care. This
is where the “source layer” is formed, which is crucial for the
measurement. To maintain this layer, the electrode must
always be kept moist (see below).
6.2.2 pH electrode GE 114 WD
The electrode included in the scope of delivery of the G 1500
is a robust, low-maintenance gel electrode with an epoxy
shaft (Ø 12 mm x 120 mm), Pellon diaphragm and waterproof BNC connector.
Area of use: pH 0 - 14 (temperature range 0 - 60°C, conductivity >200μS/cm)
The electrode is suitable for universal use (e.g. drinking water, surface water,
swimming pools, aquariums, slightly dirty waste water).
Special cable
Shaft
Electrolyte
Reference electrode
Internal buffer
Bleeder electrode
Diaphragm
Glass membrane

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A storage bottle is included with the pH
electrode. Before conducting a measurement,
remove the electrode from the bottle (by
loosening the screw cap) and rinse with tap
water.
6.2.3 Care and maintenance
The GAK 1400 maintenance and calibration set contains the products needed
for calibration, care and maintenance of your electrode: 5 buffer capsules
(GPH 4,0, GPH 7,0, GPH 10,0), 3 wide-mouth bottles GPF 100, storage
solution KCL 3 M, cleaning solution GRL 100
Crystallisation of the 3 mol/l KCl solution (potassium chloride) is unavoidable!
Crystallised potassium chloride on the protective cap and shaft can easily be
removed with a fingernail or cloth and is therefore not a defect or grounds for
complaint.
Dirty electrodes must be cleaned. Suitable cleaners for the pH glass membrane are
listed in the table below.
Impurities
Cleaners
General residue
Mild detergent
Inorganic coatings
Commercially available liquid glass
cleaners
Metal compounds
1 mol/l HCl solution or GRL 100
Oil, grease
Special cleaner or solvent (*
Biological coatings with protein
1% pepsin enzyme in 0.1 molar HCl
solution (GRL 100)
Resin lignins
Acetone (*
Extremely resistant residues
Hydrogen peroxide, sodium hypochloride (*
Normal cleaning: Immerse for at least 5 minutes in GRL 100 pepsin cleaning
solution, then rinse with clean water
*) Check the material of the pH probe (plastic shafts, for example, cannot be cleaned
with solvent). If in doubt, contact the manufacturer to inquire about suitable
cleaners for the existing electrode.
This is also important in the case of aggressive substances or other substances
that are not primarily water-based!
6.2.4 Further information
pH electrodes are wearing parts that must be replaced after exposure to chemical
and mechanical influences if compliance with the required values is no longer
possible even after careful cleaning and possibly regeneration, or if the signal is very
sluggish. When using the electrodes, be aware that various substances in aqueous
solutions can corrode glass and that chemicals can produce a chemical reaction with
the KCl solution in the electrode, which can result in blockage of the diaphragm.
Fig. with/without storage bottle

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Examples:
- In solutions that contain proteins, such as for measurements in medical and
biological applications, KCl can cause denaturation of the protein.
- Coagulated paints
- Solutions that contain high concentrations of silver ions
Substances that accumulate on the glass membrane or the diaphragm affect the
measurement and must be removed regularly. This can be achieved for example with
automatic cleaning systems.
Electrodes normally have a life of at least 8-10 months, which can usually be
increased to more than 2 years with proper care. The actual life will vary
depending on the particular application.
6.2.5 Choosing a pH electrode
The GE 114 WD (or other universal electrodes, such as GE 100) can be used for
most applications. However, some areas of application require special electrodes:
1. Measurements in low-ion media (rainwater, aquarium water, de-ionised water):
GE 104 BNC (from 20 µS/cm).
4. Soil analyses
Glass electrodes with more than one diaphragm (GE 101 BNC). Use an
insertion mandrel!
5. Electroplating, certain paints and lacquers: GE 151 BNC glass electrode
6. Cheese, fruit, meat
Needle electrode (GE 101 BNC or GE 120 BNC). For measurements in
cheese, milk and all products that contain proteins, the electrode must be
cleaned with a special cleaner (pepsin solution - GRL 100)
7. Waste water: Glass electrode with ground diaphragm GE 173 BNC
7 Configuration
Some menu points depend on current device settings.
invoke
menu next parameter change parameter confirm settings discard changes
/
press shortly:
single step
hold key:
fast change
Press the “function key” long, until the menu is invoked and the first parameter is
displayed (auxiliary display shows “SET.T“).
Press the “function key” shortly to select the next parameter. The parameter can be
changed by pressing the keys “up/down”. After the last parameter or by pressing the
“function key” long the settings will be confirmed and the menu exits. In order to
discard changes switch off the instrument. When the device is switched on again it
will start with the former configuration
>1s
>1s
>1s

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When the value “YES“ is selected for the parameter “IN,T“ and confirmed by
pressing the “function key”, the device will be reset to the factory settings.
If no key is pressed for more than two minutes the configuration will be
aborted (display: “(.END“). Within the parameter „PK.OF“ and „PK.SL“ this timeout
is not activated. All changes will be discarded!
At every menu item you can save the changes and close the menu by
pressing and holding the function key (> 1s).
Param.
Werte
Bedeutung
/
SET.T
Setting the temperature
-5 …150 (*
Set the temperature used for temperature compensation
in °C (* or
23
…
302
°F
PK.OF
Setting the zero point
Display
current
measure-
ment
value
Set the zero point for calibration of the pH measurement
(see chapter 8 Calibration of the pH measurement)
Note: if no calibration is necessary, do not change the
parameter by pressing the Up/Down keys –
continue with
function key
PK.SL
Setting the gradient
Display
current
measure-
ment
value
Set the gradient for calibration of the pH measurement
(see chapter 8 Calibration of the pH measurement)
Note: if no calibration is necessary, do not change the
parameter by pressing the Up/Down keys –
continue with
function key
POFF
Auto-power-off function
OFF
No auto-power-off
15,30, 60,
120
,
240
Automatically turn of device, when no key is pressed
during the selected value (in minutes)
L,TE
Backlight
OFF
Backlight disabled
15, 30, 60,
120
,
240
Automatically turn of backlight, when no key is pressed
during the selected value (in seconds)
ON
Backlight will not be turned off automatically
UN,T
Temperature unit
°
[
Display temperature in °C
°
F
Display temperature in °F
IN,T
Restore factory settings
NO
Keep current configuration
YES
Load factory settings (display: “
IN,T DONE
“)
During menu exit, the changes are stored (“STOR“) – if necessary the device will be
restarted automatically.

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8 Calibration of the pH measurement
Equipment needed:
•Reference: Buffer solution(s) (e.g. GPH …, PHL …, GAK 1400)
•Distilled or deionised water for rinsing the electrode
•Measuring device for determining the temperature of the buffer solution(s), if
necessary
8.1 General information
To achieve a precise measurement, observe the following points:
•If possible, the calibration range should overlap the measuring range. To
achieve this, it is recommended to use buffer solutions for measurements as
follows: below pH 7: pH 7.0 and pH 4.0
above pH 7: pH 7.0 and pH 10.0
•Calibration should be conducted at the same temperature used for the
measurement in the medium. To equalize the temperatures of the buffer
solution(s) and electrode, they should be stored together for a while in a place
that is protected against draught.
•Measure the temperature of the buffer solution(s) with a thermometer (e.g.
G 1710). The exact value of the buffer solution(s) is temperature dependent
and can be determined based on the tables provided.
•Always use fresh buffer solutions
We recommend that you always conduct a 2-point calibration.
Calibration is possible only in a temperature range of 0..60 °C.
8.2 Preparations
Connect the pH electrode to the device and switch on the device (the current
measured value appears on the display).
If possible, do not hold the measuring device in your hand during the measurement
(see chapter 6 Basics of the measurement
pH measurement). Carefully remove the protective cap from the electrode (Caution!!
The cap contains 3 mol/l KCl).
Rinse the electrode with distilled or deionised water.
8.3 Conducting a 1-point calibration
Invoke the menu by pressing and holding the function key as described in chapter 7.
Enter the temperature of the buffer solution under “SET.T” and confirm by pressing the
function key.
Place the electrode in the buffer solution (e.g. pH 7).
For a 1-point calibration, you can use any buffer solution; for a 2-point
calibration you must use a buffer solution with a value between pH 6.75 and
pH 7.25.
Wait until the display value is stable. Press the Up/Down key to set the display value
to the value of the buffer solution.

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For a 2-point calibration, press the function key briefly to switch to the second
calibration point. To conduct a 1-point calibration, confirm the entered value by
pressing and holding the function key.
Rinse the electrode with distilled or deionised water.
8.4 Conducting a 2-point calibration
Conduct the offset equalization with a buffer solution (value between pH 6.75 and pH
7.25) as described in 8.3 “Conducting a 1-point calibration”.
As the temperature in the device under “SET.T” enter the temperature of the
solution used for equalization of the gradient (2nd point, not pH 7).
Place the electrode in the buffer solution (e.g. pH 4, pH 10). The buffer solution must
have a value below pH 6 and above pH 8.
A gradient correction with buffer solutions between pH 6 and pH 8 is not
possible. An attempt to change the values will result in “[AL ERR.2 / [AL ERR.3”
and the change will be ignored.
Wait until the display value is stable. Press the Up/Down key to set the display value
to the value of the buffer solution.
Confirm the configured value by pressing the function key.
8.5 Completion of the calibration
After successful completion of a 2-point calibration the assessment of the electrode
condition is displayed briefly in percent.
A low value can be the result of the age of the electrode, contaminated or old buffer
solutions or impurities on the BNC connector.
If the calibration is not completed successfully an error message ((AL ERR.) is
displayed (see chapter 11.2 Error messages for calibration).
Confirm the error message by pressing the function key – the device will restart and
the standard values for zero point and gradient are restored.
In the unit display >(AL< flashes to indicate the missing calibration.
If the calibration was carried out unattended, switch off the device by pressing
and holding the On/Off button in order to use the values of the previously active
calibration after restarting the device.
Display the electrode assessment of the currently active calibration:
Invoke the menu by pressing and holding the function key as described in
chapter 7. Press the function key to access the parameter “PK.OF”. Close the
menu by pressing and holding the function key (Do not change values) – the
electrode assessment in percent is displayed (“----” if no valid data is available).

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9 Accuracy check / adjustment service
You can send the device to the manufacturer for adjustment and inspection.
Calibration certificate - DKD certificate - official certifications:
If the measuring instrument is supposed to receive a calibration certificate, it has to
be sent to the manufacturer (declare test points, e. g. pH 4; pH 10).
If the device is certificated together with a suitable sensor very high overall
accuracies are possible.
Basic settings can only be checked and – if necessary – corrected by the
manufacturer.
A calibration protocol is enclosed to the device ex works. This documents the
precision reached by the production process.
10 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!
Do not use different types or batteries with different state of charge. We
recommend using new and high quality alkaline batteries.
The use of damaged or unsuitable batteries could lead to further heating,
whereby the batteries can burst or in the worst case exploding.
Required tools: 1x Phillips screwdriver PH 1
•Unscrew the two screws (1) and remove the cover (2).
•Exchange the two batteries (type: AA) (3) carefully.
Ensure correct polarity – the correct position of the
batteries is drafted on the circuit board. The batteries
must slide in without force.
•Check: O-ring seal (4) undamaged, clean and in the
intended cavity? To make the assembly easier and
prevent damage, a dry O-ring can be greased with
suitable grease.
•Put on the cover (2) straightly. The device is starting
automatically.
Note: the O-ring (4) has to been in the cavity, when
pushing on the cover (2),
•Tighten the screws (1).
1
2
3
4

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11 Fault and System Messages
11.1 Error messages for measurement
Description
What to do?
No display or
confused
characters,
Device does
not react on
key press
Battery empty
Replace battery (see chapter 10 Replacing
batteries)
System error
Open battery cover, wait briefly, close again
(see chapter 10 Replacing batteries)
Device defective
Return to manufacturer for repair
ERR.1
Measured value above
allowable range
Check: temperature not within sensor range?
-> measuring value to high!
defective electrode
Return to manufacturer for repair
ERR.2
Measured value below
allowable range
Check: temperature not within sensor range?
-> measuring value to low!
defective electrode
Return to manufacturer for repair
SYS
ERR
System error
Switch off the device and switch on again,
check batteries - when the error remains
return to manufacturer for repair
BAT LO
battery is ultimately
exhausted
(See chapter 10 Replacing batteries)
11.2 Error messages for calibration
Description
What to do?
>(AL<
(flashes in unit
display)
An error occurred during the
last calibration Conduct a calibration (see chapter 8 Calibration of the pH measurement)
(AL
ERR.1
Neutral buffer not allowed
Incorrect buffer solution
Always use the neutral buffer as the
first solution! (Exception: 1-point
calibration)
Buffer solution is contaminated
Use fresh buffer solution
Electrode is defective
Clean the electrode and repeat
calibration. If error occurs again ->
replace electrode
(AL
ERR.2
Slope is too low
Buffer solution(s)
contaminated
Use fresh buffer solutions
Electrode is defective
Replace electrode
(AL
ERR.3
Slope is too high
Buffer solution(s)
contaminated
Use fresh buffer solutions
Electrode is defective
Replace electrode
(AL
ERR.4
Incorrect calibration
temperature
Calibration is possible only between
0..60°C

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12 Reshipment and disposal
12.1 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.
Add the completed reshipment form of the GHM website
http://www.ghm-messtechnik.de/downloads/ghm-formulare.html.
12.2 Disposal
Dispense exhausted batteries at destined gathering places The device
must not be disposed in the unsorted municipal waste! Send the device
directly to us (sufficiently stamped), considering the above if it should be
disposed. We will dispose the device appropriate and environmentally
sound.
Private user can return the device at the municipal collection points for
small electrical appliances.

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13 Specification
Measuring range pH
0,00 … 14,00 pH
Temperature compensation
-5 … 150 °C (bzw. 23 … 302 °F)
Accuracy
pH (device)
± 0,02 pH ± 1 Digit
Input resistance pH
approx. 1012 Ohm
Measuring cycle
Approx. 2 measuring per second.
Anschlüsse
pH
BNC Anschluss für pH-Elektrode
Display
3-lines segment-LCD, additional symbols, illuminated
(white, lighting time adjustable)
Additional functions
Min/max/hold
pH calibration
Manual 1-or 2-point calibration
Housing
Break-proof ABS-housing
Protection
class
IP65 / IP67 (only with waterproof characterized probes
at connected state).
dimensions
L*B*H [mm]
and weight
108 * 54 * 28 mm without BNC connector
130 g inc. battery without electrode
190 g inc. battery and electrode
Working conditions
-20 to 50 °C; 0 to 95 % r.F. (shortly 100 % r.F.)
Storage temperature
-20 to 70 °C
Power
supply
2*AA-batteries (scope of delivery)
Power
consumption/
Battery life
Approx. 0.7 mA, with lighting approx. 2.5 mA
Life time > 3000 hours for alkaline batteries (without
backlight).
Battery indicator
4 state battery status display
Exchange notice if battery is low: "
BAT
"
Auto-Power-Off-Function
If activated, the device is switched off automatically
Directives and standards
The instruments confirm to following European
directives:
2014/30/EU EMV directives
2011/65/EU RoHS
Applied harmonized standards:
EN 61326-1:2013 emissions level: class A
emi immunity according to table2
additional error: < 0.5 % FS
EN 50581:2012
The device is for the mobile application or for the
stationary operation in the course of specified working
conditions without further restrictions construed.

H86.0.1X.6C-01 Operating Manual G 1500 page 18 of 18
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