Hach ORBISPHERE 32301 Kurzanleitung
DOC024.98.93013
ORBISPHERE Model
32301 Sensor Cleaning and
Regeneration Center
08/2018, Edition 7
Basic User Manual
Allgemeines Benutzerhandbuch
Manuel d'utilisation de base
Manual básico del usuario
Manuale di base per l'utente
Basisgebruikershandleiding
Allmän användarhandbok
Peruskäyttöohje
Начальное руководство пользователя
English..............................................................................................................................3
Deutsch.......................................................................................................................... 12
Français......................................................................................................................... 22
Español.......................................................................................................................... 32
Italiano............................................................................................................................ 42
Nederlands....................................................................................................................52
Svenska......................................................................................................................... 62
Suomi..............................................................................................................................71
Русский..........................................................................................................................80
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Specifications
Specifications are subject to change without notice
Specification Details
Power supply 120 or 230 Vac @ 50/60 Hz, 10 VA
Internal fuses F1 = 100 mA (230V) / 250 mA (120V)
F2 = 630 mA
Overvoltage category II
Ambient temperature 0 to 40°C (32 to 104°F)
Relative humidity Up to 80%
Altitude < 2,000 meters (6,562 feet)
EMC requirements EN61326-1: EMC Directive
Korean registration
User Guidance for EMC Class B Equipment
가정용을 포함하는 EMC 등급 B 장치에
대한 사용자 지침
사용자안내문
B 급 기기 ( 가정용 방송통신기자재 )
이 기기는 가정용 (B 급 ) 전자파적합기기로서 주로 가정에서 사용하는 것을 목적으로 하
며 , 모든 지역에서 사용 할 수 있습니다.
CE compliance EN61010-1: LVD Directive
General information
In no event will the manufacturer be liable for direct, indirect, special, incidental or consequential
damages resulting from any defect or omission in this manual. The manufacturer reserves the right to
make changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
Safety information
N O T I C E
The manufacturer is not responsible for any damages due to misapplication or misuse of this product including,
without limitation, direct, incidental and consequential damages, and disclaims such damages to the full extent
permitted under applicable law. The user is solely responsible to identify critical application risks and install
appropriate mechanisms to protect processes during a possible equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do not use or install this
equipment in any manner other than that specified in this manual.
Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious
injury.
English 3
CAUTION
Indicates a potentially hazardous situation that may result in minor or moderate injury.
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special
emphasis.
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This is the safety alert symbol. Obey all safety messages that follow this symbol to avoid potential
injury. If on the instrument, refer to the instruction manual for operation or safety information.
This symbol indicates that a risk of electrical shock and/or electrocution exists.
This symbol indicates the presence of devices sensitive to Electro-static Discharge (ESD) and
indicates that care must be taken to prevent damage with the equipment.
This symbol, when noted on a product, indicates the instrument is connected to alternate current.
Electrical equipment marked with this symbol may not be disposed of in European domestic or
public disposal systems. Return old or end-of-life equipment to the manufacturer for disposal at no
charge to the user.
Products marked with this symbol indicates that the product contains toxic or hazardous substances
or elements. The number inside the symbol indicates the environmental protection use period in
years.
Product overview
The sensor cleaning and regeneration center is a multi-purpose device for ORBISPHERE sensors.
The product performs these important functions:
• It offers a rapid and efficient method for cleaning sensor electrodes, and in the case of hydrogen
sensors a method of cathode re-chloridization or regeneration.
• It allows a simple check to be made on the circuitry of most sensors to make sure that the sensor
is working correctly, or alternatively trace a fault.
The product consists of two parts:
• The unit itself (Figure 1).
• A regeneration cell with an attached banana plug (Figure 2).
The regeneration cell DG33619 is applicable to clean A1100 or C1100 sensors (Figure 3).
Note: Two additional banana plugs are supplied to connect to the ohmmeter leads should they need to be adapted
for use with the unit when testing circuits.
Electric power (No. 1 in Figure 1) is required for the cleaning functions of the unit. It is pre-configured
for either a 120 V or a 230 V power supply so check to see that the right voltage has been specified
for your needs. Electric power is not needed for the circuit test functions.
The 10-pin LEMO plug cable (No. 3) is used to connect the unit to a sensor for cleaning and circuit
testing. The sensor 10-pin LEMO receptacle (No. 6) fulfills the same function. For sensors with
detachable cables use the unit cable leaving your sensor cable in place and attached to the
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measuring device. For sensors that do not have detachable cables plug the sensor cable into the unit
sensor receptacle.
Figure 1 Model 32301 sensor cleaning and regeneration center
1 120 or 230Vac power input 5 Timer switch
2 Circuit test sockets 6 Plug for sensors with attached cable
3 Sensor cable for detachable sensors 7 Connects to regeneration cell
4 Selector knob
The unit has a timer switch (No. 5) which switches off automatically after 60 seconds, a selector knob
(No. 4) and a counter electrode socket (No. 7). The selector knob offers the choice of cleaning or
chloridizing functions. For oxygen or ozone sensors, the anode, cathode and guard ring electrode
cleaning positions are available. The two selector positions in the chloridizing section cover
dechloridization and rechloridization of hydrogen sensors. The counter electrode socket takes the
banana plug from the regeneration cell.
For electrical testing there are eleven sockets (No. 2) to accept banana plugs. Each of the sockets is
connected to one of the ten pins of a sensor LEMO plug (including a shield plug). By connecting an
ohmmeter across two of the sockets sensor resistances can be measured and the state of the sensor
checked.
Figure 2 Regeneration cell for 31xxx series
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Use the supplied regeneration cell to clean 31xxx series. Refer to Figure 2. Connect the red banana
plug into the counter electrode socket on the sensor cleaning and regeneration center.
The tube of the cell fits over the sensor head with the rubber O-ring inside the tube acting as a seal.
Most of the interior of the tube is lined with a concentric tube of black carbon to act as a counter
electrode during the cleaning process.
Figure 3 Regeneration cell for A1100 or C1100 sensors
Use the DG33619 regeneration cell to clean A1100 or C1100 sensors. Refer to Figure 3. Connect
the blue banana plug into the counter electrode socket on the sensor cleaning and regeneration
center.
Note: Screw the DG33619 regeneration cell on the EC sensor.
Screw the regeneration cell on the sensor head with the rubber O-ring into the external groove acting
as a seal. An electrode into the cell acts as a counter electrode during the cleaning process.
Oxygen and ozone sensor cleaning
The Orbisphere DG33620 EC cleaning sensor support can hold two EC sensors during the cleaning
procedure. Refer to Figure 4.
1. Remove the membrane and electrolyte from the sensor. Refer to the operator manual delivered
with the sensor for details on how to do this as the procedure is different depending on the type of
sensor.
2. Fix the sensor vertically onto a clamp or stand, so that its head is facing upwards. If the sensor
has a permanently attached cable, introduce the LEMO plug into the sensor receptacle (No. 6 in
Figure 1 on page 5). Sensors with detachable cables may connect directly to the sensor cable
(No. 3).
3. For the supplied regeneration cell, push the tube of the regeneration cell over the sensor head
until it reaches a stop. Connect the red banana plug into the counter electrode socket (No. 7).
4. For the DG33619 regeneration cell, screw the regeneration cell in the sensor head. Connect the
blue banana plug into the counter electrode socket (No. 7).
5. Pour standard ORBISPHERE model 2959 electrolyte into the regeneration cell so that it covers
the electrode.
6. Turn the selector knob (No. 4) to the cathode position and press the TIMER switch (No. 5). The
warning light will come on and remain on for 60 seconds while cleaning takes place.
7. Observe the solution in the regeneration cell. From being a clear liquid it should fill with small
bubbles given off at the cathode. This has the effect of darkening the solution. If at the end of the
60 seconds cleaning period an abundant development of bubbles from the cathode is not obvious
then press the TIMER switch once more. The development of bubbles is a sign of a clean
electrode.
8. Turn the selector switch to guard and press the TIMER switch. Again watch for bubbles and
repeat the cleaning process if necessary.
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9. Turn the selector switch to anode and press the TIMER switch. Here the bubbles may be more
reluctant to appear and you may need to press the TIMER switch several times before you are
satisfied that the anode is clean enough, particularly for ozone sensors.
10. Important: If cleaning an A1100 or C1100 sensor, skip this step and continue at Step 10. If after
five cleaning periods bubbles do not appear then pour out the cleaning liquid, remove the
regeneration cell, and carry out a chemical cleaning of the sensor as described in the sensor
manual. Complete the cleaning with the 32301 unit by going back to Step 3 above.
11. Once the three electrodes are clean, disconnect the counter electrode and sensor and empty the
cleaning solution from the regeneration cell.
12. Rinse the interior of the regeneration cell and sensor with water.
13. Based on the model used, remove or unscrew the regeneration cell from the sensor head and
again rinse both well with water.
14. Visually inspect the three electrodes. They should appear clean and of a uniform color. If there
are any dark patches, particularly on the anode, repeat this cleaning process until any such
patches disappear.
Figure 4 Orbisphere DG33620 EC cleaning sensor support
Replace the membrane
Once cleaning is complete prepare the sensor for reuse.
1. Important: If cleaning an A1100 or C1100 sensor, skip this step and continue at Step 2. Follow
the sensor face polishing instructions described in the sensor operator manual supplied with the
sensor.
2. Install a new membrane and electrolyte to the sensor. Refer to the operator manual delivered with
the sensor for details on how to do this as the procedure is different depending on the type of
sensor.
3. Rinse excess electrolyte off the sensor with water.
4. The sensor can now be calibrated and returned to service.
Hydrogen sensor servicing
A hydrogen sensor service consists of the following operations:
1. De-chloridization of the cathode. This process removes the chloride film from the silver cathode
surface.
2. De-greasing the sensor. This is only necessary under certain, fairly unusual circumstances.
3. Re-chloridization of the cathode. Here a fresh layer of silver chloride is grown on the cathode
surface.
4. Activation of the anode. The anode surface is polished and treated with concentrated nitric acid.
5. Electrolyte and membrane replacement.
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De-chloridization of the cathode
1. Remove the membrane and electrolyte from the sensor. Refer to the operator manual delivered
with the sensor for details on how to do this.
2. Fix the sensor vertically onto a clamp or stand so that its head is facing upwards. If the sensor
has a permanently attached cable, introduce the LEMO plug into the sensor receptacle (No. 6 in
Figure 1 on page 5). Sensors with detachable cables may connect directly to the sensor cable
(No. 3).
3. For the supplied regeneration cell, push the tube of the regeneration cell over the sensor head
until it reaches a stop. Connect the red banana plug into the counter electrode socket (No. 7).
4. For the DG33619 regeneration cell , screw the regeneration cell in the sensor head. Connect the
blue banana plug into the counter electrode socket (No. 7).
5. Pour standard ORBISPHERE model 29011 chloridizing solution into the regeneration cell so that
it covers the electrode .
6. Turn the selector knob (No. 4) to the dechloridize position and press the TIMER switch (No. 5).
The warning light will come on and remain on for 60 seconds while de-chloridization takes place
7. Observe the solution in the regeneration cell. From being a clear liquid it should fill with small
hydrogen bubbles given off at the cathode. This has the effect of darkening the solution. If at the
end of the 60 seconds de-chloridizing period an abundant development of bubbles from the
cathode is not obvious then press the TIMER switch once more and continue to do so until
bubbles appear. An abundant evolution of bubbles is a sign that de-chloridization is probably
complete.
8. Look closely at the cathode. It should now be silver-white with no darker patches. If this is not the
case discard the solution and replace with new solution then continue to activate the de-
chloridizing process. Any darker patches will disappear with time.
9. With de-chloridization of the cathode complete, disconnect the counter electrode and sensor, and
empty the solution from the regeneration cell.
10. Rinse the interior of the regeneration cell and sensor with water.
11. Remove the regeneration cell from the sensor and rinse the sensor head again with water.
De-greasing the sensor (optional procedure)
Under most operating conditions the sensor is not exposed to greasy samples and with careful
handling no problems should be experienced with grease. In such circumstances no sensor de-
greasing is necessary and you should proceed to the next section.
If, however, the sensor has been used with dirty samples or exposed in some way to grease then the
de-greasing procedure described in this section should be followed. You will learn from experience
whether in your particular case de-greasing is necessary on a regular or occasional basis or not at
all.
The procedure is as follows:
1. Fill the sensor with standard ORBISPHERE model 2959 electrolyte, then mount any membrane
and stand the sensor face down in boiling water for about ten minutes shifting its position from
time to time.
2. After boiling, allow the sensor to cool and then remove the membrane and rinse the sensor head
with water. The sensor head should now be free of grease.
Re-chloridization of the cathode
In this process a fresh layer of silver chloride is grown on the cathode surface.
1. Fix the sensor vertically onto a clamp or stand so that its head is facing upwards. If the sensor
has a permanently attached cable, introduce the LEMO plug into the sensor receptacle (No. 6 in
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Figure 1 on page 5). Sensors with detachable cables may connect directly to the sensor cable
(No. 3).
2. For the supplied regeneration cell, push the tube of the regeneration cell over the sensor head
until it reaches a stop. Connect the red banana plug into the counter electrode socket (No. 7).
3. For the DG33619 regeneration cell, screw the regeneration cell in the sensor head. Connect the
blue banana plug into the counter electrode socket (No. 7).
4. Pour about 10 ml of standard ORBISPHERE model 29011 chloridizing solution into the
regeneration cell. This will cover the sensor head to a depth of about 1 cm. Eliminate any bubbles
of air by tapping the side of the cell.
5. Turn the selector knob (No. 4) to the chloridize position and press the TIMER switch (No. 5).
The warning light will come on and remain on for about eight minutes while re-chloridization takes
place. During this period the cathode will turn from silver-white to a pale pink color which will
gradually darken as the layer of silver chloride builds up.
6. With de-chloridization of the cathode complete, disconnect the counter electrode and sensor, and
empty the solution from the regeneration cell.
7. Rinse the interior of the regeneration cell and sensor with water.
8. Based on the model used, remove or unscrew the regeneration cell from the sensor and rinse the
sensor head again with water.
Activation of the anode
In this process the central electrode (anode) is polished, and then treated with concentrated nitric
acid.
CAUTION
Do not to put acid on the newly chloridized cathode.
1. Follow the sensor face polishing instructions described in the sensor operator manual supplied
with the sensor.
2. Install the membrane support, finger tight, using the sensor mounting tool. Make sure the smooth
side with a groove faces out when installed.
3. Fill the sensor reservoir with water. This helps protect the new silver chloride layer in case any
nitric acid leaks into the reservoir.
4. Place a drop at a time of concentrated (approximately 70% by weight) nitric acid on the center of
the anode. Allow the acid to spread to the surrounding guard electrode. It is recommended to
leave the acid on the anode for about 30 seconds.
5. Wash off the acid, and repeat the procedure (applying drops of nitric acid) two more times.
6. Wash the sensor thoroughly with distilled water.
Refill sensor with electrolyte and replace membrane
Once servicing is complete prepare the sensor for reuse.
1. Install a new membrane and electrolyte to the sensor. Refer to the operator manual delivered with
the sensor for details on how to do this.
2. Rinse excess electrolyte off the sensor with water.
3. The sensor can now be calibrated and returned to service.
Circuit testing functions
This part of the manual describes a series of tests which will allow you to check if the electronics of
your sensor are functioning correctly.
The cause of such problems may be chemical, electronic or mechanical in origin. Since the tests
described here are logical, quick and simple to carry out, you can rapidly discover whether or not a
particular problem is of electronic origin or not.
English 9
If it is, then the tests allow you to localize the problem and report it to your Hach Lange
representative for repair. If it is not, then you know that the problem is of chemical or mechanical
origin and should act accordingly. Chemical problems may merely necessitate a very thorough
sensor service. Mechanical problems might take the form of poor connections on the inlet side of the
sample pipework.
For these tests it is not necessary to plug the sensor cleaning and regeneration center into the power
supply.
Please carry out the tests in the order in which they are presented here. Ignore any instructions
which do not apply to your system.
Sensor testing
For sensor testing you will require an ohmmeter with leads ending in banana plugs suitable to be
plugged into the group of eleven sockets on the TEST panel of the sensor cleaning and regeneration
center. Two such banana plugs are supplied with each unit.
Figure 5 LEMO-10 plug
The numbers on these sockets correspond to the pin numbers on a LEMO-10 sensor plug as
illustrated in Figure 5.
The cleaning and regeneration center does not need to be plugged into the power for these tests.
The LEMO plug of the sensor being tested must be plugged into the socket in the center of the unit
(No. 6 in Figure 1 on page 5).
Check temperature measurement thermistors
Checking the values against those given in Resistance tables on page 11, if applicable, measure
the resistance between:
All sensors
Pin 3 and Pin 6
A discrepancy greater than ±10% indicates a probable fault in the circuit.
Check temperature compensation thermistors (model 31331 only)
Checking the values against those given in Resistance tables on page 11, if applicable, measure
the resistance between:
Ozone sensor (model 31331 only)
Pin 7 and Pin 8
Pin 2 and Pin 5
A discrepancy greater than ±10% indicates a probable fault in the circuit.
Check connections within the sensor
Measure the resistance between all pins and the shield. Check that no short circuits exist in the
sensor by measuring between the following pins:
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