ParTech SoliTechw2 IR Series User manual

INSTRUCTION MANUAL
SoliTechw² IR Sensor
Suspended Solids Sensor
For use with 7300w² Monitor

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SoliTechw² IR Sensor
Table of Contents
1 Introduction.................................................................................................................................................................. 5
1.1 SoliTechw² IR Sensors..................................................................................................................................... 5
1.1.1 Light Absorption........................................................................................................................................... 5
1.1.2 Mounting Options......................................................................................................................................... 6
2 Mechanical Installation................................................................................................................................................. 7
2.1 Location............................................................................................................................................................ 7
2.2 Partech Brackets............................................................................................................................................... 7
2.3 Customer Supplied Brackets............................................................................................................................. 7
3 Electrical Installation.................................................................................................................................................... 8
3.1 Cable Routing................................................................................................................................................... 8
3.2 Connection Details............................................................................................................................................ 8
1 SoliTechw² IR Sensor Configuration............................................................................................................................ 9
1.1 Sensor Config................................................................................................................................................... 9
1.2 Sensor Status................................................................................................................................................... 9
1.3 Add Sensor....................................................................................................................................................... 9
1.1 S:0x SoliTechw² IR 0-xxxxx............................................................................................................................ 10
1.1.1 S:0x Info...................................................................................................................................................... 10
1.1.2 S:0x Remove.............................................................................................................................................. 11
1.1.3 S:0x Modbus Address................................................................................................................................. 11
2 Measurement Configuration....................................................................................................................................... 12
2.1 Measurement Config....................................................................................................................................... 12
2.1.1 Measurement Status................................................................................................................................... 12
2.1.2 Add Measurement....................................................................................................................................... 12
2.2 M:0x – Measurement Channel........................................................................................................................ 13
2.2.1 M:0x Info..................................................................................................................................................... 13
2.2.2 M:0x Title.................................................................................................................................................... 14
2.2.3 M:0x Set Zero............................................................................................................................................. 14
2.2.4 M:0x Set Cal............................................................................................................................................... 14
2.2.5 M:0x Take Sample...................................................................................................................................... 14
2.2.6 M:0x Sample Result.................................................................................................................................... 14
2.2.7 M:0x Averaging........................................................................................................................................... 14
2.2.8 M:0x Remove.............................................................................................................................................. 15
2.2.9 M:0x Display Position.................................................................................................................................. 15
2.2.10 Restore Defaults....................................................................................................................................... 15
3 Calibration.................................................................................................................................................................. 16
3.1 Preparation for Calibration.............................................................................................................................. 16
3.2 Calibration Frequency..................................................................................................................................... 16
3.3 Calibration Solutions....................................................................................................................................... 16
3.4 Zero Calibration.............................................................................................................................................. 16
3.5 Span Calibration............................................................................................................................................. 17
3.6 Take Sample................................................................................................................................................... 18
3.7 Sample Result................................................................................................................................................. 18
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SoliTechw² IR Sensor
4 Spare Parts List......................................................................................................................................................... 20
4.1 Sensors........................................................................................................................................................... 20
4.2 Monitor............................................................................................................................................................ 20
4.3 Mounting Accessories..................................................................................................................................... 20
4.4 Miscellaneous................................................................................................................................................. 20
5 Technical Support...................................................................................................................................................... 21
5.1 Returning Equipment for Repair...................................................................................................................... 21
6 Technical Specification.............................................................................................................................................. 22
6.1 General........................................................................................................................................................... 22
6.2 Environmental Data........................................................................................................................................ 22
6.3 Measurements................................................................................................................................................ 22
7 Appendix 1: Fuller's Earth.......................................................................................................................................... 23
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SoliTechw² IR Sensor
1 Introduction
This manual covers the SoliTechw² IR range of sensors as used on the 7300w² monitor. For more extensive
explanation regarding menus etc. the manual covering the 7300w² monitor should be referred to. For IR sensors used
with 750w² hand-held monitor or either the ASLD2200, 7100, 7200, 8100 or 8200 monitors, please see appropriate
instruction manual. The SoliTechw² IR sensors (as listed within the illustrations below) are not compatible with any
platform other than the 7300w² monitor. Whilst every attempt has been made to ensure that the instructions are
correct, common sense and good engineering practice should always be used to adapt to specific site details. If you
are in any doubt, please contact Partech or your local distributor for further information.
1.1 SoliTechw² IR Sensors
All SoliTechw² IR sensors use an infrared light source, which offers long-term stability, low maintenance and high
reliability. The principle of operation is described below.
1.1.1 Light Absorption
The SoliTechw² IR sensor family is intended to monitor suspended solids in four predetermined nominal ranges. Each
sensor is available as a 10metre or 20metre option.
No internal adjustment is possible, but measurement outside these ranges is sometimes possible and maybe
determined by experimentation. All range statements are based on solids present on a typical sewage treatment
works, and although they are useful as guidance, the ranges will be affected by the nature of the solids being
monitored.
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SoliTechw² IR Sensor (Range: 0-200 mg/l)
PN223893 10 metre cable
PN223894 20 metre cable
SoliTechw² IR Sensor (Range: 0-1,500 mg/l)
PN223895 10 metre cable
PN223896 20 metre cable
SoliTechw² IR Sensor (Range: 0-10,000 mg/l)
PN223897 10 metre cable
PN223898 20 metre cable
SoliTechw² IR Sensor (Range: 0-30,000 mg/l)
PN223899 10 metre cable
PN223900 20 metre cable
100mm Gap 40mm Gap
15mm Gap 8mm Gap

SoliTechw² IR Sensor
The sensor uses the light absorption principle, with the light source an infrared LED operating at 950nm. In simple
terms, the sensor detects solids by comparing the amount of light emitted by the LED with the amount received by the
photo-diode. The amount of solids present is inferred from the reduction in received light.
The sensor has been designed to monitor Suspended Solids throughout the treatment process.
1.1.2 Mounting ptions
A range of mounting options are available for the SoliTechw² IR sensors, which will allow the user to apply the sensor
in a wide variety of locations. This manual addresses Suspended Solids Detection applications. Please contact
Partech for other types of application. When assessing mounting options, attention should be paid to the accessibility
of the sensor for calibration and maintenance, stability of the sensor in the flow conditions present on site and to
ensuring the sensor is fully submerged at all times. It is recommended that the sensor is located in an area where
there is sufficient movement to keep the solids in suspension and where any turbulence provides minimum impact on
the sensors.
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SoliTechw² IR Sensor
2 Mechanical Installation
2.1 Location
Reliable accurate measurement from any instrument can only be achieved by correct installation of the measuring
device; in the case of suspended solids, this is particularly important. If you are in any doubt, contact Partech or your
local distributor for advice.
Below are some points that should be considered before installing the SoliTechw² IR sensor, and if the sensor is failing
to obtain the results expected.
Avoid areas of extreme flow or turbulence; air bubbles will disturb the reading.
The sensor should be mounted in such a way as to allow easy access for calibration and maintenance. It
should be possible to remove the sensor from the process without the need to shut the process down.
To allow a single technician to calibrate and maintain the system the sensor should be placed within sight of
the monitor. Although cable runs of up to 100 metres are possible, operational problems can be caused.
2.2 Partech Brackets
Partech offer a mounting bracket, PN171290 for the installation of the SoliTechw² IR sensors which suits most
applications.
Fig 2 Handrail Bracket
2.3 Customer Supplied Brackets
When creating brackets to mount the SoliTechw² IR sensor, care should be taken to ensure that the following
guidelines are observed:
The bracket must be strong enough to support the sensor with minimum movement when installed into the
sample.
When attachments to the sensor are made, these should be done using the threaded area at the top of
the sensor housing or by clamping around the sensor body.
Consideration should be given to enable simple removal and replacement of the sensor for the inspection,
calibration and servicing to be carried out.
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SoliTechw² IR Sensor
3 Electrical Installation
The SoliTechw² IR sensor connects to the 7300w² monitor. The information below provides the physical installation
instructions; please refer to the monitor instruction manual for complete setup details.
3.1 Cable Routing
Care should be taken to ensure that the cable routing does not cause problems with the sensor measurement; good
engineering practice should be followed with particular attention being paid to the following points;
The sensor cable should be kept to the minimum length possible.
Sufficient spare cable should be provided to allow complete and easy removal of the sensor from the process.
Any spare cable should be safely stored.
The sensor cable should be kept separate form mains cable.
3.2 Connection Details
All sensors within the w² family of instruments are connected to the 7300w² Monitor using the same 4 wire
configuration.
•RED and BLACK wires provide the 12VDC supply to the sensor and the communication ground.
•WHITE and GREEN provide data communication.
A maximum of two sensors can be directly connected to the standard 7300w² Monitor, however additional sensors can
be added using the optional Expansion Boxes available separately.
Remove the 4-way connector from the 7300w² Monitor by pulling downwards to disconnect for easy access to the
connections. Connect the sensor cores as follows:
(Terminals from left to right on the 4 way connector)
Term 1 (Left) - RED (+12V)
Term 2 - Black (0V) and Drain
Term 3 - White (Data A)
Term 4 (Right) - Green (Data B)
Always connect the screen drain wire with the Black (Term 2). Illustration Left shows drain wire and Black wire
connected together, and covered in Black Heat shrink.
Always use Bootlace ferrules when terminating the sensors to ensure a good connection to the terminals.
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SoliTechw² IR Sensor
1 SoliTechw² IR Sensor Configuration
Before attempting to configure the SoliTechw² IR sensor, please read the user manual that came with your monitor.
The monitor manual will introduce you to the basic set-up of the monitor, and
will familiarise you with the monitor menu structure and buttons.
The monitor leaves the factory with no sensors pre-installed.
Assuming the monitor has been physically connected to a sensor, the next
step is to register and configure the sensor before any measurements can be
made. A single sensor may provide one or more measurements. We advise
only adding one sensor at a time. Once the first sensor has been registered,
connect the second and register again. Repeat for any additional sensors.
All sensors must be registered to the monitor in this way, even if they are
different types.
Please note that live measurements are not available until the sensor
Configuration stage has been completed.
1.1 Sensor Config
From the Measurement screen press to access the MAIN MENU.
From the MAIN MENU screen, select SENSOR CONFIG by pressing , and
press to accept.
1.2 Sensor Status
This option allows the user to review the
current status of the 8 sensor channels,
these will all be set to disabled until a
sensor is added.
Once a sensor has been installed the
display will be updated to indicate the
sensor type installed and it's status.
1.3 Add Sensor
From the MAIN MENU screen, select SENSOR CONFIG by pressing and
press .
The SENSOR MENU should be displayed. Press to highlight ADD
SENSOR, and press .
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SoliTechw² IR Sensor
The Monitor will now search all
possible addresses (0 to 240) to find
any attached sensors. During the
search, any sensors found will be
displayed momentary before
continuing with the search.
Once the search is complete, the Monitor will display a list of sensors found.
Each sensor will be automatically allocated a new address from S:01 to S:08.
Repeat the above process to install a second, third or more sensors. A total of
8 sensors are possible (expansion box may be required to add additional
sensors).
Sensor addition is now complete.
If a single or multiple sensors have been found the can be pressed to
escape from continuing the search.
1.1 S:0x SoliTechw² IR 0-xxxxx
Once the sensor has been added and registered, the monitor will provide a list
of functions specific to the sensor. Press or to select the sensor and
press . The CONFIG MENU will display a list of sensor functions.
1.1.1 S:0x Info
This function provides a range of diagnostic information that may be requested by Partech for fault finding
As can be observed from screenshots above, Page 1 displays sensor type and sensor serial number. Page 2 displays
firmware version and date. The other pages display various statuses.
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