E+H COD仪操作

BA 305C/07/en/02.02
51507202
valid from: Software version 3.0StamoSens CSM 750 / CSS 70System for
Online Measurement of
Dissolved Organic Substance
Operating Instructions
StamoSens CSM 750 / CSS 70 2Endress+Hauser
StamoSens CSM 750 / CSS 70
Endress+Hauser 3
Table of contents
1Safety instructions . . . . . . . . . . . . . . . . . 4
1.1Designated use . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2Installation, commissioning, operation . . . . . . 4
1.3Operational safety . . . . . . . . . . . . . . . . . . . . . . 4
1.4Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5Notes on safety conventions and icons . . . . . . 5
2Identification . . . . . . . . . . . . . . . . . . . . . . 6
2.1Device designation . . . . . . . . . . . . . . . . . . . . . 6
2.2Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . 7
2.3Certificates and approvals . . . . . . . . . . . . . . . 7
3Installation . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1Quick installation guide . . . . . . . . . . . . . . . . . . 8
3.2Incoming acceptance, transport, storage . . . 9
3.3Installation conditions . . . . . . . . . . . . . . . . . . . 9
3.4Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5Post-installation check . . . . . . . . . . . . . . . . . . 10
4Electrical connection . . . . . . . . . . . . . 11
4.1Terminal assignment . . . . . . . . . . . . . . . . . . . 11
4.2Inputs and outputs . . . . . . . . . . . . . . . . . . . . . 11
4.3Cleaning unit . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4Serial interface . . . . . . . . . . . . . . . . . . . . . . . . 13
4.5Post-connection check . . . . . . . . . . . . . . . . . 14
5Operation . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1Display and operating elements . . . . . . . . . . 15
5.2Local operation . . . . . . . . . . . . . . . . . . . . . . . 16
6Commissioning . . . . . . . . . . . . . . . . . . 236.1Function check . . . . . . . . . . . . . . . . . . . . . . . 236.2Initial start-up . . . . . . . . . . . . . . . . . . . . . . . . . 237Maintenance . . . . . . . . . . . . . . . . . . . . . . 277.1Maintenance schedule . . . . . . . . . . . . . . . . . . 277.2Cleaning agent . . . . . . . . . . . . . . . . . . . . . . . 287.3Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 287.4Checking cables and connections . . . . . . . . 288Troubleshooting . . . . . . . . . . . . . . . . . 298.1Error messages . . . . . . . . . . . . . . . . . . . . . . . 298.2Replacement of device fuses . . . . . . . . . . . . 308.3Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309Accessories . . . . . . . . . . . . . . . . . . . . . . 3110Technical data . . . . . . . . . . . . . . . . . . . . 3510.1CSM 750 Transmitter . . . . . . . . . . . . . . . . . . . 3510.2CSS 70 Sensor . . . . . . . . . . . . . . . . . . . . . . . . 3610.3Cleaning unit (optional) . . . . . . . . . . . . . . . . . . 3711Appendix . . . . . . . . . . . . . . . . . . . . . . . . . 3811.1Operating matrix . . . . . . . . . . . . . . . . . . . . . . 3811.2Factory settings of sensors . . . . . . . . . . . . . . 4011.3Control for a customer-specific cleaning unit . . . . . . . . . . . . . . . . . . . . . . . . . . 42
1Safety instructions StamoSens CSM 750 / CSS 70
1Safety instructions
1.1Designated use
The StamoSens CSS 70 Sensor and the StamoSens CSM 750 Transmitter form an
analytical system for continuous measurement of dissolved organic substance. The
system is specifically designed to monitor the organic substance of the effluent streams
in wastewater treatment plants.
Any other use than the one described here compromises the safety of persons and the
entire measuring system and is, therefore, not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
1.2Installation, commissioning, operation
Please note the following items:
•Installation, electrical connection, commissioning, operation and maintenance of
the measuring system must only be carried out by trained technical personnel.
The technical personnel must be authorised for the specified activities by the system
operator.
•Technical personnel must have read and understood these Operating Instructions
and must adhere to them.
•Before commissioning the entire measuring point, check all the connections for
correctness. Ensure that electrical cables and hose connections are not damaged.
•Do not operate damaged products and secure them against unintentional
commissioning. Mark the damaged product as being defective.
•Measuring point faults may only be rectified by authorised and specially trained
personnel.
•If faults can not be rectified, the products must be taken out of service and secured
against unintentional commissioning.
•Repairs not described in these Operating Instructions may only be carried out directly
by the manufacturer or by the Endress+Hauser service organisation.
1.3Operational safety
The measuring system has been designed and tested according to the state of the art
and left the factory in perfect functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety
conditions:
•Installation instructions
•Local prevailing standards and regulations.
4Endress+Hauser
StamoSens CSM 750 / CSS 701Safety instructions
Endress+Hauser 5
Immunity to interference This instrument has been tested for electromagnetic compatibility according to prevailing European standards for industrial applications. It is protected against electromagnetic interference by the following design measures:•cable screen •interference suppression filter •interference suppression capacitors.Protection against interference as specified above is valid only for an instrument connected according to the instructions in these Operating Instructions.1.4Return If the measuring system has to be repaired, please send it cleaned to the Endress+Hauser sales centre responsible. Please use the original packaging, if possible. Please enclose the completed Dangerous Goods sheet (copy the second last page of these Operating instructions) with the packaging and also the shipping documents.1.5Notes on safety conventions and icons General safety instructions Electrical symbols #
Warning!This symbol alerts you to hazards. They can cause serious damage to the instrument or to persons if ignored."
Caution!This symbol alerts you to possible faults which could arise from incorrect operation. They could cause damage to the instrument if ignored.!
Note!This symbol indicates important items of information.%
Direct current A terminal, at which there is direct current voltage or through which direct current flows.&
Alternating current A terminal, at which there is (sinusoidal) alternating voltage or through which alternating current flows.)
Ground connection A grounded terminal that, from the user’s perspective, is already grounded via a grounding system.*
Protective earth connection A terminal that has to be grounded before other connections can be made.
2Identification
StamoSens CSM 750 / CSS 706Endress+Hauser
2Identification 2.1Device designation 2.1.1CSM 750 Transmitter nameplate 2.1.2CSS 70 Sensor nameplate 2.1.3Product structure StamoSens CSM 750 Transmitter Fig.1:Example nameplate for CSM 750 Transmitter Fig.2:Example nameplate for CSS 70 sensor Power supply 7Power supply 80 ... 250 V AC 8Power supply 24 V AC / DC 9Special version acc. to customer’s specification Communication / current output A RS 232 and 0/4 ... 20 mA Y Special version acc. to customer’s specification Version 1One-channel version 9Special version acc. to customer’s specification Additional equipment A Quality certificate Y Special version acc. to customer’s specification CSM 750
complete order code
StamoSens CSM 750 / CSS 702Identification
StamoSens CSS 70UV Sensor
Application
A Without cleaning unit
B With cleaning unit 230 V
C With cleaning unit 115 V
Y Special version acc. to customer’s specification
Measuring range
4Measuring range 0.3 ... 50 1m resp. 0.4 ... 60 mg/l COD
5Measuring range 15 ... 700 1/m resp. 20 ... 900 mg/l COD
9Special version acc. to customer’s specification
Cable length
B7m cable
D15 m cable
Y Special version acc. to customer’s specification
Version
1Without assembly
2 2 m immersion tube and pendulum frame with 250 mm wall spacing
3Seawater-resistant sensor version
9Special version acc. to customer’s specification
Additional equipment
A Quality certificate
Y Special version acc. to customer’s specification
CSS 70complete order code
2.2Scope of delivery
The scope of delivery comprises:
•1 StamoSens CSM 750 Transmitter (device type and version according to nameplate
→ Chap.2.1.1)
•1 StamoSens CSS 70 Sensor (sensor type and version according to nameplate
→ Chap.2.1.2)
•1 Quality Certificate
•1 305C/07/en Operating Instructions
2.3Certificates and approvals
Declaration of conformity
The measuring system meets the legal requirements of the harmonised European
standards. Endress+Hauser confirms compliance with the standards by affixing the 4
symbol.
Quality certificate
Depending on the order code, you receive a quality certificate.
With the certificate, Endress+Hauser confirms compliance with all technical regulations
and the successful testing individually for your product.
Endress+Hauser7
3Installation
StamoSens CSM 750 / CSS 708Endress+Hauser
3Installation 3.1Quick installation guide Fig.3:Entire StamoSens CSM 750 / CSS 70 measuring system ➀: CSM 750 Transmitter ➁: Weather protection cover ➂: Compressor housing (only with cleaning unit)➃: Upright post ➄: Power supply ➅: Signal outputs ➆: Immersion tube ➇: Pendulum frame ➈: Sensor CSS 70➉
: Cleaning unit
StamoSens CSM 750 / CSS 703Installation Endress+Hauser 9
3.2Incoming acceptance, transport, storage •Make sure the packaging is undamaged. Inform the supplier about damage to the packaging. Keep the damaged packaging until the matter has been settled.•Make sure the contents are undamaged. Inform the supplier about damage to the delivery contents.Keep the damaged products until the matter has been settled.•Check that the scope of delivery is complete and agrees with your order and the shipping documents.•The packaging material used to store or to transport the measuring system must provide shock protection and humidity protection. The original packaging offers the best protection. Also, keep to the approved ambient conditions (see Technical Data → Chap.10).•If you have any questions, please contact your supplier or your Endress+Hauser sales centre responsible (see back page of these Operating Instructions).3.3Installation conditions 3.3.1Dimensions Fig.4:CSM 750 Transmitter dimensions ➀: Front view ➁: Side view ➂: Top view with opened front lid ➃
: Rear view
3Installation
StamoSens CSM 750 / CSS 7010Endress+Hauser Fig.5:CSS 70 Sensor dimensions and top view of the measuring area.3.4Installation 3.4.1Installation instructions !Note!•Select a measuring point where representative measurement can be taken. Do not mount the sensor where medium flow is turbulent and fast-flowing.•We recommend you to fit the transmitter with a weather protection cover (see Accessories → Chap.9).•Attach the sensor to a special extension tube. Due to the weight of the sensor (approx. 5 kg), the sensor cable does not provide sufficient support. Never carry the sensor by its cable.•The best fixture is a damping support which holds the sensor vibration-free.•Install the system at an easily accessible position to prevent danger arising for the operating personnel (during commissioning or when carrying out maintenance and cleaning work).•Route all cable connections to prevent mechanical damage and interference from other lines.•Install measuring channels in the direction of flow to obtain a self-cleaning effect.•The activated sludge version of the sensor is equipped with a cleaning unit which prevents soiling or blocking due to particles by compressed air. For other applications with soiling contents, the cleaning unit is available as an accessory.•Install the air outflow of the cleaning unit at the narrow side of the light slit.3.5Post-installation check •After mounting, check that all connections are secure and leak-tight.•Check that the sensor is secured such that it is free of vibration and tension.•Check whether all cables have been routed without damage or electromagnetic
interference.
StamoSens CSM 750 / CSS 704Electrical connection
4
Electrical connection
Fig.6:Electrical connection for CSM 750 Transmitter with 80-250 V AC power supply
Fig.7:Electrical connection for CSM 750 Transmitter with 24 V DC/AC power supply
!Note!
The two-channel version ("Duo-Version") is not available for the CSM 750 Transmitter.#
Warning!
•Ensure before connection that the mains voltage corresponds with the voltage specified on the nameplate.
•A clearly marked mains disconnecting device must be installed in the vicinity of the instrument.
•Protect the transmitter by a 1 A fuse.
•Only switch the transmitter on when the sensor connector is plugged in and secured.
•Only plug in or remove the sensor connector when the transmitter is switched off.
4.2
Inputs and outputs
4.2.1
Control input (+24V)
!
Note!
Use Ua (+24V , terminal 26) to control the 24V DC "INPUT". Then connect terminal 27
(0V) and terminal 24 (0V).
Output
Terminals Function
24 V DC "INPUT"
24 / 25
Hold function, i.e. measurement is interrupted and the current value in the display is frozen
4Electrical connection StamoSens CSM 750 / CSS 70
4.2.2
Signal outputs (switch contacts)
4.2.3
Analog output (I-1)
4.3Cleaning unit
The cleaning unit is connected to the mains supply. The CSM 750 Transmitter is connected to the cleaning unit according to the following table:
#
Warning!
Disconnect the device from the mains before opening it. The connection contacts are live even when the transmitter is switched off.
Output Terminals Description
Alarm 17 / 8 / 9Switches when alarm value 1 is exceeded or undershot Alarm 2 4 / 5 / 6Switches when alarm value 2 is exceeded or undershot Hold 10 / 11 / 12Measurement interrupted, values held
Fault 13 / 14 / 15Error message can be retrieved via operating menu Cleaning
16 / 17 / 18
Switch contact to clean sensor
Output Terminals Description
Sensor 10/4 mA 20 mA
31 / 32 / 33
Measurement range start Measurement range end Terminal CSM 750
Cleaning unit terminal
Function
3 ())PE Grounding for housing 1 (L)L1Conductor 2 (N)N Zero conductor 161Fuse
18
2
StamoSens CSM 750 / CSS 704Electrical connection
Fig.8:Cleaning unit connection
4.4Serial interface
!
Note!
The serial interface is only available for service purposes.
Configure the PC as follows:
•Software protocol: 9600 Baud, N (= no parity), 8 Data bits, 1 Stop bit
•Output format: ASCII. For a data transfer, the PC must send the ASCII code "81" (hex
51, "Q" = Question).
RS 232-0 of CSM 750 Transmitter COM 1 / 2 on PC
Terminal
SUB-D 9-pin Function
Function
SUB-D 9-pin SUB-D 25-pin 233TxD RxD 23222RxD TxD 3221
8
CTS
RTS 74CTS
85205GND GND
5
7
4Electrical connection StamoSens CSM 750 / CSS 70
4.5Post-connection check
Carry out the following checks after electrical connection of the measuring system:
Device status and specifications Note
Is the measuring device or cable externally undamaged?Visual inspection
Electrical connection Note
Does the supply voltage correspond to the data on the nameplate?80 ... 250 V AC
24 V AC / DC
Do the cables used meet the required specifications?Use original E+H cables for
connecting the sensor
see Accessories → Chap.9
Are the mounted cables relieved of tension?
Cable type properly disconnected?Guide power supply and signal
lines separate over the entire
travel distance, so that no
interference can take place.
Separate cable channels are
ideal.
Cable routing without scuffing or cross-overs?
Are power supply and signal cables connected correctly according
to wiring diagram?
Are all screw terminals tightened?
Are all cable entries mounted, tightened and leak-resistant?
Is the sensor connector tightened?
Is the transmitter protected with a fuse?For fuse specification, see
Technical Data → Chap.10
Is a mains disconnecting device available?
StamoSens CSM 750 / CSS 705Operation
5Operation
5.1Display and operating elements
5.1.1Display
Fig.9:CSM 750 Transmitter’s operating panel
➀: LED display (measured value display)
➁: LC display (status display)
➂: Operating keys
➃: Indicator LEDs
➄: Mains switch
5.1.2Key assignment
The operating keys and the integrated indicator LEDs have the following functions:
Key Key function Indicator LED function
H–Main menu measurement Alarm value 1 exceeded
K–Backwards in the sub-menu Alarm value 2 exceeded
V–Backwards in the main menu
Measuring range exceeded
–Increase numerical value in the sub-menu
–Start cleaning in the service menu
W–Forwards in the main menu
Measuring range undershot
–Reduce numerical value in the sub-menu
–Stop cleaning in the service menu
F–Confirm main menu options
Error message
–Forwards in the sub-menu
–Confirm numerical values and parameters
–Switch over display during measuring mode
J–Change correction factors
Cleaning active
–Start single measurement in the service menu
5Operation StamoSens CSM 750 / CSS 70
5.2Local operation
5.2.1Main menu
Access the main menu by holding down the H key, until "MEASUREMENT" is displayed.
The main menu options contain the following fields:
StamoSens CSM 750 / CSS 705Operation
5.2.2"MEASUREMENT" Menu
5Operation StamoSens CSM 750 / CSS 70
5.2.3"PARAMETER ENTRY" Menu
!Note!Some settings that can be made in the "CONFIGURATION" menu affect the defaults in
the "PARAMETER ENTRY" menu. In view of this, complete the "CONFIGURATION" menu
first during initial start-up (s. Chap.6.2).
StamoSens CSM 750 / CSS 705Operation
5.2.4"CALIBRATION POINTS" Menu
5.2.5"SAK INPUT" Menu
5.2.6"FREQUENCY" Menu
5Operation StamoSens CSM 750 / CSS 70
5.2.7"CONFIGURATION" Menu
!Note!Some settings that can be made in this menu affect the defaults in the "PARAMETER
ENTRY" menu. In view of this, complete the "CONFIGURATION" menu first during initial
start-up (s. Chap.6.2).
StamoSens CSM 750 / CSS 705Operation
5.2.8"LANGUAGE" Menu
5.2.9"DIAGNOSTICS" Menu
5Operation StamoSens CSM 750 / CSS 70
5.2.10"SERVICE" Menu
5.2.11"DATA MEMORY" Menu
!Note!"DATA MEMORY" menu can only be read out for service purposes.
StamoSens CSM 750 / CSS 706Commissioning
6Commissioning
6.1Function check
#Warning!
Before switching the system on, ensure that the measuring point is not at risk.
Uncontrolled pumps, valves or similar things can lead to devices being damaged.
"Caution!
•Before switching on the system check all the connections again for correctness.
•Also ensure that the post-connection check (s. Chap.4.5) has been carried out.
6.2Initial start-up
!Note!
•Before switching the system on for the first time, familiarise yourself with the operation
of the transmitter. For this, see in particular Chapters 1 (Safety instructions) and
5 (Operation).
•The CSS 70 Sensor should be left in the medium for approx. 1 hour, so that the sensor
can adapt to the medium temperature.
•The CSM 750 Transmitter has already been pre-configured at the factory and starts
measuring automatically when switched on. Due to the different waste water
composition, the media can vary greatly. Therefore, we recommend using an
application-specific calibration for commissioning.
For initial start-up of the measuring system, proceed as follows:
6Commissioning StamoSens CSM 750 / CSS 70
StamoSens CSM 750 / CSS 706Commissioning
To carry out a one-point calibration of the measuring system, proceed as follows:
6Commissioning StamoSens CSM 750 / CSS 70
!Note!The above described one-point calibration is only reasonable when calibrating the
measuring unit SAK. In case of calibration on DOC, TOC, BOD and COD, please carry
out a multi-point calibration. For your calibration points use a high- concentrated effluent
sample and make reasonable degrees by diluting with drinking water. Use pure drinking
water for zero point calibration.
StamoSens CSM 750 / CSS 707Maintenance
7Maintenance
The StamoSens CSM 750 / CSS 70 measuring system does not contain any wearing
parts and generally requires little maintenance. However, you should still carry out the
following maintenance work to ensure perfect functionality:
•Cleaning the sensor
•Calibration
•Checking cables and connections
#Warning!
•Corrosive. It is imperative that you protect your hands, eyes and clothing when using
the listed cleaning agents.
"Caution!
•For all maintenance work on the device or sensor, observe possible repercussions on
the process control or the process itself.
!Note!•Make sure the sensor measuring windows can not be damaged,
e.g. by cleaning the measuring channels with sharp, hard objects.
•Only E+H staff may open the sensor, otherwise any warranty claims are rendered null
and void.
•Repairs not described in these Operating Instructions may only be carried out directly
by the manufacturer or by the Endress+Hauser service organisation.
7.1Maintenance schedule
Complete the specified maintenance work at the following time intervals:
Period of time Duty Note
Weekly–Clean sensor (measuring slit)Put a paper tissue into the measuring slit.
Soak with cleaning agent. Allow to react for
10 to 30 min, then remove cloth.
Cleaning agent → Chap.7.2
Monthly–Clean sensor (measuring slit
and optical window)
–Calibrate Clean optical window with ultrafiltration cleaner, where possible.
Check calibration and, if necessary, recalibrate.
Yearly–Functional test Check battery backup
(service life approx. 5 years)
Check cables and connections
→ Chap.7.4
! Note: The yearly functional test is an
integral part of the maintenance contract,
which you can conclude for maintenance of
the measuring system.
7Maintenance
StamoSens CSM 750 / CSS 707.2Cleaning agent Selecting the cleaning agent is dependent on the type of soiling. The most frequent soilings and their associated cleaning agents are listed in the following table: 7.3Calibration The sensor calibration should be checked monthly. If necessary, recalibraton is required after cleaning the optical window. The calibration can be carried out as one-point or multiple-point calibration. For this, proceed as described in the initial start-up chapter ( → Chap.6.2).7.4Checking cables and connections Check the cables and connections according to the following checklist.•Check sensor cable for integrity, in particular the outer insulation.•If you are using a junction box: the box must be dry and clean inside. Moist dehydrating bags must be replaced.•Tighten the terminals in the box.•Tighten the terminals in the device. Also check here whether the interior and terminals are clean, dry and free of corrosion (if not: check seals and screw connections for leak-tightness and integrity).•Cable screens must be connected exactly according to the wiring diagram. Screens that are not connected or incorrectly connected can compromise the device ’s immunity to interference.Type of soiling Cleaning agent Large residues Cloth Greases and oils Agents containing tensides (alkaline) or water-soluble organic solvents (e.g. alcohol)Lime deposits, metal hydroxide coatings, heavy biol. coatings 3...5 % HCl Ultrafiltration cleaner (but never together with acid)Sulphide deposits Mixture of hydrochloric acid (3 %) and thiocarbamide (usual commercial)Ultrafiltration cleaner (but never together with acid)Protein coatings Mixture of hydrochloric acid (0.1 molar) and pepsin (usual commercial)Ultrafiltration cleaner (but never together with acid)Light biological coatings Pressurised water Ultrafiltration cleaner (but never together with acid)
StamoSens CSM 750 / CSS 708Troubleshooting
8Troubleshooting
This troubleshooting refers to both measures that
•can be carried out without intervention in the device and
•to device defects, which require components to be replaced.
8.1Error messages
In this chapter you will find instructions for diagnosis and elimination of errors that occur.
#Warning!
Danger to life.
•Disconnect the device from the mains before opening it. Check the isolation from
supply and secure the switch against unintentional reactivation.
•If work under voltage is required, it must only be carried out by a trained electrician,
a second person must be present for safety reasons.
•Switching contacts can be supplied by separate electric circuits. Switch the voltage
to these electric circuits off as well before you work on the terminals.
"Caution!
Danger for components through electrostatic discharge (ESD).
•Electronic components are susceptible to electrostatic discharge. Protection
measures such as prior discharging of the operator to PE or permanent grounding of
the operator with wrist strap are required.
Particularly dangerous: plastic floors at low humidity and plastic clothing.
•For your own safety, only use genuine spare parts. Function, accuracy and reliability,
also after repairing, are only guaranteed with original parts.
Transmitter error messages CSM 750
Error message Error
frequency
Possible cause Measures
Incorrect sensor type––––Connected sensor does not correspond to the
sensor selected in the "CONFIGURATION"
menu Replace sensor or correct sensor type in the "CONFIGURATION" menu
No sensor signal0 Hz Transmitter is not receiving a frequency signal
from the sensor, e.g. due to a cable break Check electrical connection E+H Service
Light intensity205 Hz Sensor outside of the medium;
Incorrect sensor type, e.g. SAK sensor in
activated sludge Check mounting location, check application; Check sensor type
Sensor soiled305 Hz Sensor's measuring window soiled Clean sensor
Cross-sensitivity405 Hz Cross-sensitivity (yellow or red colouring due to
floating substances and solids) falsifies the
measured value
Clean sensor, check application
Concentration too
high
505 Hz End of measuring range exceeded Check measuring range and sensor type
8Troubleshooting StamoSens CSM 750 / CSS 70
8.2Replacement of device fuses
#Warning!
Disconnect the device from the mains before changing fuses.
Only use the following fuses:
–80 ... 250 V AC connection: 5 x 20 mm, time-lag, 500 mA fine-wire fuse
–24 V DC / AC connection: 5 x 20 mm, time-lag, 2 A fine-wire fuse
Other fuses are not permitted.
8.3Disposal
The CSM 750 Transmitter and the CSS 70 Sensor contain electronic components and
must therefore be disposed of as electronic waste. When doing this, please also
observe local regulations.。