GREISINGER G 1500 User manual

Quick reference guide
G 1500 series
pH / Redox measuring device
EN

Table of contents
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Table of contents
1 About this documentation......................................................4
1.1 Purpose of the document................................................................4
1.2 Legal notices..................................................................................4
1.3 Further information.........................................................................4
2 Safety.......................................................................................5
2.1 Explanation of safety symbols ........................................................5
2.2 Foreseeable misuse .......................................................................5
2.3 Safety instructions..........................................................................6
2.4 Intended use...................................................................................7
3 The product at a glance..........................................................8
3.1 G 1500 series.................................................................................8
3.2 Display elements............................................................................8
3.3 Operating elements........................................................................9
3.4 Connections .................................................................................10
4 Measurement Basics.............................................................11
4.1 pH measurement..........................................................................11
4.1.1 Explanation...................................................................................11
4.2 Redox measurement (ORP) .........................................................11
5 Operation and maintenance.................................................12
5.1 Operating and maintenance notices..............................................12
5.2 Calibration of the pH measurement ..............................................12
5.3 Display the electrode assessment of active calibration .................13
5.4 Battery..........................................................................................14
5.4.1 Battery indicator............................................................................14
5.4.2 Changing battery..........................................................................14
6 Operation...............................................................................15
6.1 Opening the configuration menu...................................................15

Table of contents
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6.2 Adjustment of the measuring input................................................18
7 Error and system messages.................................................19
8 Technical data .......................................................................21
9 Service ...................................................................................25
9.1 Manufacturer................................................................................25

1 | About this documentation
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1 About this documentation
1.1 Purpose of the document
_
–This document is intended as a quick reference option.
–It does not replace the operating manual.
–For this reason, read the operating manual before operating the product for the
first time.
1.2 Legal notices
This document is entrusted to the recipient for personal use only. Any impermissible
transfer, duplication, translation into other languages or excerpts from this operating
manual are prohibited.
The manufacturer assumes no liability for print errors.
1.3 Further information
_
Software version of the product:
–V1.2 or later
_
Link to the complete operating manual:
_
http://www.greisinger.de
For the exact product name, refer to the type plate on the rear side of the product.
_
NOTE
For information about the software version, press and hold the ON button to switch on
the product for longer than 5 seconds. The series is shown in the main display and the
software version of the product is shown in the secondary display.

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Safety | 2
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2 Safety
2.1 Explanation of safety symbols
_
DANGER
This symbol warns of imminent danger, which can result in death, severe bodily injury,
or severe property damage in case of non-observance.
_
DANGER
This symbol indicates danger for living tissue as well as a variety of materials, which
can be damaged or destroyed when coming into contact with this chemical. Caustic
effect, protective equipment required!
_
CAUTION
This symbol warns of potential dangers or harmful situations, which can cause damage
to the device or to the environment in case of non-observance.
_
NOTE
This symbol indicates processes, which can have a direct influence on operation or
can trigger an unforeseen reaction in case of non-observance.
2.2 Foreseeable misuse
_
The fault-free function and operational safety of the product can only be guaranteed if
applicable safety precautions and the device-specific safety instructions for this docu-
ment are observed.
If these notices are disregarded, personal injury or death, as well as property damage
can occur.

2 | Safety
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_
DANGER
Incorrect area of application!
In order to prevent erratic behaviour of the product, personal injury and property
damage, the product must be used exclusively as described in the chapter Description
in the operating manual.
–The product is not suitable for use in explosion-prone areas!
–The product must not be used for diagnostic or other medical purposes on pa-
tients!
–The product is not intended to come into direct contact with food. For measure-
ment in foods, samples must be taken and discarded after the measurement!
–Not suitable for use with requirements on functional safety, e.g. SIL!
2.3 Safety instructions
_
DANGER
Danger of breaking the electrodes!
All electrodes contain glass parts that can cause injuries when broken. There is an
elevated risk of injury in connection with measurements in foods.
–Inspect the electrode before and after the measurement!
–Always measures in samples for measurements in foods. Discard these samples
after the measurement!
_
NOTE
This product does not belong in children's hands!

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2.4 Intended use
_
_
G 1500
The product is designed for measuring the pH value in water and aqueous media by
means of suitable electrodes.
_
_
G 1501
The product is designed for measuring the pH value and Redox by means of suitable
electrodes in water an aqueous media. Temperature compensation takes place auto-
matically with a connected temperature sensor.
Application examples for this are, for example, drinking water, waste water, surface
water, swimming pools, fish breeding and process chemistry.

3 | The product at a glance
G 1500 series
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3 The product at a glance
3.1 G 1500 series
LCD Display
Front view
Top view G 1500
Top view G 1501
3.2 Display elements
_
Display
_
Battery indicator
Evaluation of the battery status
_
Unit display
Display of units or type of mode, min/max/hold
_
Main display
Measurement of the current pH value or value for
min/max/hold
_
Auxiliary display
Corresponding temperature for the displayed pH
value with unit. Measured temperatures are dis-
played with a decimal place, adjusted without.
_
Bar graph
Progress for calibration and visualisation of the
electrode evaluation

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3.3 Operating elements
_
On / Off button
Press briefly
Switch on the product
Activate / deactivate lighting
Long press
Switch off the product
Reject changes in a menu
_
Up / Down button
Press briefly
Display of the min/max value
Change value of the selected parameter
Long press
Reset the min/max value of the current measure-
ment
Both simultaneously
Rotate display, overhead display
_

3 | The product at a glance
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Function key
Press briefly
Freeze measurement (Hold)
Return to measurement display
Call up next parameter
Long press, 2s
Start menu configuration, (ONF appears in the
display
Long press, 4s
Start automatic calibration, (AL appears in the
display
3.4 Connections
BNC connection
Connection for pH electrode
Un/locking with rotating ring on the cable plug
2x 4mm banana
Connection for temperature sensor or reference
electrode
CAUTION
Ensuring water tightness!
The product guarantees protection from spray water, rain or accidental immersion in
water. This protection for the plug connector is only guaranteed when plugged in.
Moisture or contaminants on the contacts can result in incorrect measurement results.
–Protect contacts from soiling and moisture!
–Dry off damp plug connectors as quickly as possible!
NOTE
The temperature measurement can be influenced by conductive liquids on the banana
sockets. We recommend always keeping the connections dry.

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4 Measurement Basics
NOTE
To start the measurement, remove the protection cap from the electrode and rinse the
shaft and the membrane with distilled water.
4.1 pH measurement
4.1.1 Explanation
The pH value describes the acidic or alkaline behaviour of an aqueous solution.
A pH value below 7 is acidic, a value above 7 is alkaline. A pH value of 7 is neutral.
The pH measurement is very precise, but also sensitive. The measured signals are
very weak and high-ohmic. This is the case, in particularly in low-ion media.
_
NOTE
In order to detect the pH value of a solution, it should always be recorded together with
the measurement temperature, because most liquids change their pH value with the
temperature.
The following must be observed:
–avoid interference, electrostatic charges, etc.
–keep plug contacts clean and dry
–prevent electrodes, which do not have any special waterproof versions from ex-
tended immersion above the shaft
–calibrate electrodes sufficiently often. The can range from every hour to several
weeks, depending on the electrode and the application
–Use a suitable electrode
For additional information, refer to the operating manual!
4.2 Redox measurement (ORP)
NOTE
Special redox electrodes (e.g. RS R105) are used for the redox measurement.
The pH electrodes cannot be used for redox measurement!
For additional information, refer to the operating manual!

5 | Operation and maintenance
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5 Operation and maintenance
5.1 Operating and maintenance notices
_
NOTE
The product and electrode must be handled with care and used in accordance with the
technical data. Do not throw or strike.
_
NOTE
Plugs and sockets must be protected from soiling.
_
NOTE
If the product is stored at a temperature above 50 °C, or is not used for an extended
period of time, the batteries must be removed. Leaks from the batteries are avoided as
a result.
_
NOTE
The electrode should be stored in dry rooms at a temperature between 10 °C and 30
°C. If the storage temperature range is exceeded or undercut, the electrode can be
destroyed. It should always be stored wet in 3 mol/l KCl. Extended storage in distilled
or deionised water will result in depletion of the reference electrolytes.
_
NOTE
The pH electrode included in the scope of supply should be arranged vertically up-
wards with the connecting cable. A slight angle of inclination does not impair the
measurement.
5.2 Calibration of the pH measurement
NOTE
Rinse off the electrode with distilled or deionised water before and after placing the
electrode in the buffer solution.
1. Press the Function key for 4 seconds to open the Calibration menu. The display
shows (AL.
2. Release the Function key.

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3. PK 7 appears in the display.
4. Place the electrode in the GPH 7.0 buffer solution.
5. The product determines the correct value automatically. If the value is deter-
mined, the display flashes and an acoustic signal is issued to indicate a change
to the next calibration point.
6. If the temperature sensor is not inserted, enter the temperature of the buffer
solution by pressing the Up key and Down key and confirm the entry by pressing
the Function key again.
7. PK 4 and PK 10 alternate in the display.
8. Then, rinse the electrode with distilled or deionised water.
9. Place the electrode in the second buffer solution. The product recognises wheth-
er it is a PK 4 or PK 10 buffer solution automatically.
10. If the temperature sensor is not inserted, enter the temperature of the buffer
solution by pressing the Up key and Down key and confirm the entry by pressing
the Function key again.
11. Then, rinse the electrode again with distilled or deionised water.
After successful completion of the calibration, the assessment of the electrode condi-
tion is displayed briefly in percent. Then, the current measurement is shown in the
display again. An aged or contaminated electrode, incorrect adjustment of the pres-
sure, contamination of the platinum electrode or a damaged membrane can be the
cause for a lower evaluation.
If the calibration is not completed successfully, an error message is displayed. (AL ERR.
appears in the display See Error and system messages [19]. Confirm the error mes-
sage pressing the Function key. The product restarts and the standard value for the
gradient is restored.
5.3 Display the electrode assessment of 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).

5 | Operation and maintenance
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5.4 Battery
5.4.1 Battery indicator
_
For additional information, refer to the operating manual!
5.4.2 Changing battery
_
Only use new, high-quality and suitable alkaline batteries!
–2x Mignon battery AA
For additional information, refer to the operating manual!

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6 Operation
6.1 Opening the configuration menu
1. Press the Function key for 2 seconds to open the Configuration menu.
2. (ONF appears in the display. Release the Function key.
_
Parameter
Values
Meaning
_
Setting the temperature
SET.T
(G 1500)
-5 .. 105
Adjustable temperature value in °C, or in °F 23 ..
221 °F
SET.T
Only without temperature sensor plugged in(G
1501)
-5 .. 150
Adjustable temperature value in °C, or in °F 23 ..
302 °F
_
Setting the zero point
PK.OF
Current meas-
urement
Setting of the zero point for calibration of the pH
measurement. If a calibration cannot be carried out,
continue with the function key
_

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Setting the gradient
PK.SL
Current meas-
urement
Setting of the gradient for calibration of the pH
measurement. If a calibration cannot be carried out,
continue with the function key
_
Input
_
Only (G 1501)
INP
PK
0RP mV
Redox in mV, relative to silver / silver chloride -
electrode
0RP mVH
Redox in mVH, relative to hydrogen electrode
_
Display unit
UN,T
°(
Temperature display in °C
°F
Temperature display in °F
_

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Alarms
_
Only (G 1501)
AL.
OFF
No active alarm
ON
Alarm alerting via text display, acoustic signal and
flashing of the backlighting
BEEP
Alarm alerting via text display and acoustic signal
L,TE
Alarm alerting via text display and flashing of the
backlighting
AL.LO
Depending on the setting of the parameter value INP
PK
0.00 .. AL.K,
mV
-1500 .. AL.K,
mVH
-1293 .. AL.K,
AL.K,
Depending on the setting of the parameter value INP
PK
AL.LO .. 14.00
mV
AL.LO .. 1500
mVH
AL.LO .. 1707
_

6 | Operation
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Shut-off time
POFF
OFF
No automatic shut-off
15 30 60 120 240
Automatic shut-off after a selected time in minutes,
during which no buttons have been pressed
_
Backlight
L,TE
OFF
Backlight deactivated
15 30 60 120 240
Automatic shut-off of the backlight after a selected
time in seconds, during which no buttons have
been pressed
ON
No automatic shut off of the backlight
_
Factory settings
IN,T
NO
Use current configuration
YES
Reset product to factory settings. IN,T DONE appears
in the display
6.2 Adjustment of the measuring input
For additional information refer to the operating manual!

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7 Error and system messages
Display
Meaning
Possible causes
Remedy
(, , )
SENS ERRO
Sensor cable defect
Sensor or probe
defect
Measuring range
exceeded or under-
cut
Cable breakage
Defective sensor or
probe
Measurement
outside of the
measuring range
Send in for repair
Send in for repair
>(AL<
Error during the last
calibration
Faulty calibration
Conduct a new
calibration
No display, unclear
characters or no
response when
buttons are pressed
Battery depleted
System error
Product is defective
Battery depleted
Error in the product
Product is defective
Replace battery
Send in for repair
BAT
Battery depleted
Battery depleted
Replace battery
BAT LO
Battery depleted
Battery depleted
Replace battery
(AL ERR.1
Neutral buffer not
allowed
Incorrect buffer
solution used
Buffer solution is
contaminated
Electrode contami-
nated or defective
Use fresh buffer
solution
Clean electrode, re-
calibrate
Replace electrode
(AL ERR.2
Slope is too low
Incorrect buffer
solution used
Buffer solution is
contaminated
Electrode contami-
nated or defective
Use fresh buffer
solution
Clean electrode, re-
calibrate
Replace electrode

7 | Error and system messages
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(AL ERR.3
Slope is too high
Incorrect buffer
solution used
Buffer solution is
contaminated
Electrode contami-
nated or defective
Use fresh buffer
solution
Clean electrode, re-
calibrate
Replace electrode
(AL ERR.4
Incorrect calibration
temperature
Temperature too low
or too high
Range of 0..60 °C
(AL ERR.5
Time exceeded
during automatic
calibration
Unstable electrode
signal
Buffer solution is
contaminated
Stirring of the buffer
solution
Clean the electrode
Use fresh buffer
solution
Restart calibration
ERR.1
Measuring range
exceeded
Measurement too
high
Incorrect electrode
connected
Electrode or product
defect
Stay within allowa-
ble measurement
range
Check electrode
Send in for repair
ERR.2
Measuring range is
undercut
Measurement too
low
Incorrect electrode
connected
Electrode or product
defect
Stay within allowa-
ble measurement
range
Check electrode
Send in for repair
SYS ERR
System error
Error in the product
Switch product
on/off
Replace batteries
Send in for repair