Greenspan ODO-1000L Operational manual

ODO-1000L SENSOR
DISSOLVED OXYGEN LOGGING SENSOR

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GREENSPAN [email protected]M T:[phone] ODO-1000L SENSOR USER MANUAL
CONTENTS
1Introduction ................................................................................................................................................ 4
1.1 System Description ........................................................................................................................................ 4
1.2 Certification ................................................................................................................................................... 4
1.3 Unpacking and Inspection.............................................................................................................................. 5
1.4 Serial Number ................................................................................................................................................ 5
1.5 Warranty Policy ............................................................................................................................................. 5
1.6 Factory Service & Repair................................................................................................................................ 6
2Sensor Overview (by Parameter) ...................................................................................................................
2.1 Optical Dissolved Oxygen............................................................................................................................... 7
2.1.1 Principal of Operation............................................................................................................................... 7
2.1.2 Fluorescence Quenching........................................................................................................................... 7
3Applications................................................................................................................................................. 8
4Instrument Details....................................................................................................................................... 9
4.1.1 Sensor Design ........................................................................................................................................... 9
4.1.2 Cable Details ........................................................................................................................................... 10
4.1.3 Mechanical Specifications....................................................................................................................... 10
4.2 Options and Accessories .............................................................................................................................. 11
4.2.1 Communication Cables ........................................................................................................................... 11
4.2.2 Optional Serial Output – SDI Adapter Unit .............................................................................................12
4.3 On Board Battery Housing ........................................................................................................................... 13
4.3.1 Battery Replacement .............................................................................................................................. 13
4.3.2 Important Battery Information............................................................................................................... 14
4.3.3 Battery Warnings:................................................................................................................................... 14
4.4 Sensor Factory Calibration........................................................................................................................... 15
5Sensor Wiring & Connections......................................................................................................................16
5.1 Standard Connections.................................................................................................................................. 16
5.2 Wiring Diagrams .......................................................................................................................................... 17
6Serial Communication (RS232, RS422/485) .................................................................................................18
6.1 Waking sensor ............................................................................................................................................. 18
7Field Deployment Considerations ...............................................................................................................19
7.1 Cabling Considerations ................................................................................................................................ 19
7.2 Field Installation must ensure:..................................................................................................................... 20
8Maintenance ..............................................................................................................................................21
8.1 Optical Dissolved Oxygen............................................................................................................................. 21
9User Calibration and Testing.......................................................................................................................21
9.1 ODO ............................................................................................................................................................. 21
10 Modbus notes ............................................................................................................................................22
10.1 Holding Registers ......................................................................................................................................... 22
10.2 Show registers button.................................................................................................................................. 23
10.3 Codes and Terminology ............................................................................................................................... 24
10.4 Integer and Floating Point Values................................................................................................................ 24
10.5 32 Bit Values ................................................................................................................................................ 25
10.6 Floating Point............................................................................................................................................... 25
10.7 Updating Register Data................................................................................................................................ 25
10.8 Command Set – Modbus Function Codes....................................................................................................26

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10.9 Command Set – User Function Codes.......................................................................................................... 26
10.10 Exception Responses ................................................................................................................................... 26
11 Specification...............................................................................................................................................27
12 Contact Us ................................................................................................................................................288

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GREENSPAN [email protected]M T:[phone] ODO-1000L SENSOR USER MANUAL
1Introduction
1.1 System Description
Thank you for purchasing a Greenspan ODO-1000L Sensor. This manual provides a guide to the
configuration, operation and maintenance of your sensor to provide long term reliable and accurate
monitoring.
The sensor includes an internal data logger to provide long term data collection at remote sites. A large
memory capacity (4 Mb) allows the ODO-1000L Sensor to store data over long periods before being
downloaded either locally or remotely by your preferred communications method.
Communication with the ODO-1000L Sensor is user selectable RS232 or RS422/485. Set up, data
collection and other user functions are simple to access using the supplied software package.
Additionally key sensor information and control is available via MODBUS. Sensors are also compatible
with the optional SDI-12 adapter.
The ODO-1000LSensor can be powered using external batteries (via the sensor cable) or with
Greenspan’s optional Lithium battery pack, which can be fitted as an extension to the sensor body,
making it a fully self-contained measurement and logging system.
1.2 Certification
The ODO-1000L sensors are assembled and tested in accordance with Greenspan’s ISO 9001 Quality
Certified System. Each Sensor is individually manufactured and certified against a traceable Standard.
Following calibration the sensors undergo a range of additional control processes to ensure that all
specifications are consistent and documented.
•The instrument is visually inspected, marked and labelled.
•The complete sensor calibration record is archived for reference, and batch number information
is kept on file for statistical analysis.
•An individual Certificate of Conformance is issued to the customer.

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1.3 Unpacking and Inspection
All Greenspan sensors are made to order and are individually calibrated and inspected. This ensures that
they leave the factory in a working condition. They are packed in new cartons for shipping. On receipt,
the customer should inspect the packaging and contents for any signs of damage during transportation.
The customer should also check that all items on the delivery note have been received.
Please contact the factory in case anything has been damaged or missing. A full set of documentation
including Certificate of Conformance, Quick Start Guide, and User Manual will be provided with all
equipment – either in hard copy format or in electronic format on the USB flash memory device shipped
with the goods.
The sensor is fitted with an Acetal body which provides superior corrosion protection in a wide range of
chemically active waters.
Because an individual sensor may be used in a variety of locations, media compatibility should be
checked before installing and advice sought from Greenspan if any doubt exists.
1.4 Serial Number
Checking the Model Number and Range
Before installing your Greenspan ODO-1000L sensor, check the information on the label is correct to
confirm you have received the instrument you have ordered. The label will look similar to this.
1.5 Warranty Policy
Greenspan warrants all new Greenspan products against defects in materials and workmanship for 12
months from the date of invoice.
Products that prove to be defective during the warranty period will be repaired or replaced at the
discretion of Greenspan.
Under Greenspan warranty conditions; it is the responsibility of the customer to cover shipping charges
back to the factory. Upon repair/replacement Greenspan will cover the return shipping charges to the
customer.
This warranty does not apply to products or parts thereof which have been altered or repaired outside
of the Greenspan factory or other authorised service centre; or products damaged by improper
installation or application, or subjected to misuse, abuse neglect or accident. This warranty also excludes
items such as reference electrodes and Dissolved Oxygen membranes that may degrade during normal
use.
Greenspan will not be liable for any incidental or consequential damage or expense incurred by the user
due to partial or incomplete inoperability of its products for any reason whatsoever or due to inaccurate
information generated by its products.

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All Warranty service will be completed as soon possible. If delays are unavoidable customers will be
contacted immediately.
Any sensor should not be dismantled unless under instruction from Greenspan Service staff. Incorrect
handling will void the warranty.
1.6 Factory Service & Repair
The correct choice of sensor and assistance with field installation can be provided by Greenspan and
their sales offices. A correct choice of equipment, together with technical advice and field experience
should result in long term success in the field. Greenspan Technical Services is dedicated to customer
support and provides assistance in the selection, installation, deployment and commissioning of sensors
with a full range of consulting services. All Greenspan products are designed, developed and
manufactured in Australia and can be supplied at short notice.
If for some reason sensors are required to be returned to our factory or your sales representative, please
note the model and serial number, describe the problem, including how and under what conditions the
instrument was being used at the time of malfunction. Clean the product and cable. Decontaminate
thoroughly if used in toxic or hazardous environment. Carefully pack product in original packaging if
possible & include a statement certifying product and cable have been decontaminated with supporting
information. Products returned for repair must be accompanied by a completed GRN (Goods Return
Notification) form. All sensors returned for service and repair work must be properly decontaminated
prior to return. A cleaning charge may be applied to sensors that require further decontamination.
Service work will not commence until the quotation has been accepted by the customer. A purchase
order for all repair and service work will be required before work is carried out.

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2Sensor Overview
2.1 Optical Dissolved Oxygen
The optical dissolved oxygen (ODO) sensor uses a robust, solid state,
fluorescence based transducer for field monitoring in a variety of
environments. Fluorescence based sensors are inherently reliable and
low maintenance, with no need for replaceable membranes or
electrolyte. No Oxygen is consumed during operation making the
sensor suitable for low flow applications. The sensor also responds
quickly to changes in Oxygen levels.
2.1.1 Principal of Operation
•The emitter sends light, at ~475 nm, to the back side of the sensing element.
•The wetted side of the sensing element consists of a thin layer of a hydrophobic sol- gel material.
A ruthenium complex is trapped in the solgel matrix, effectively immobilized and protected from water.
•The light from the LED excites the ruthenium complex immobilized in the sensing element.
•The excited ruthenium complex fluoresces, emitting energy at ~600 nm.
•If the excited ruthenium complex encounters an oxygen molecule, the excess energy is
transferred to the oxygen molecule in a non-radiative transfer, decreasing or quenching the
fluorescence signal (see Fluorescence Quenching below). The degree of quenching correlates to the
level of oxygen concentration in contact with the sensing element.
2.1.2 Fluorescence Quenching
Oxygen is able to efficiently quench the fluorescence and phosphorescence of certain luminophores.
This effect (first described by Kautsky in 1939) is called "dynamic fluorescence quenching." Collision of
an oxygen molecule with a fluorophore in its excited state leads to a non-radiative transfer of energy.
The degree of fluorescence quenching relates to the frequency of collisions, and therefore to the
concentration of the oxygen- containing media.

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3Applications
Applications in which the Greenspan ODO-1000L sensors can be used include:
•Monitoring of streams and rivers.
•Monitoring of water storage bodies including stratification studies.
•Intermediate and final effluent treatment monitoring.
•Hydrological run off studies.
•Ground and bore water analysis.
•Drinking water filtration efficiency.
•Industrial process monitoring.
•Sludge and dredge monitoring.

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Power and
Data Cable
Acetal Body
Double O’ Ring connections
Moulded Cable entry
Optical DO transducer
4Instrument Details
4.1.1 Sensor Design
The Greenspan ODO-1000L Sensor consists of the following primary elements:
•Microprocessor controlled signal conditioning and logging device
•Stainless steel or Acetal Body Material
•Senor Head Shroud (removable for cleaning)
•Data cable or Battery Pack option
ODO-1000L Primary Elements

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4.1.2 Cable Details
All Greenspan sensors utilise a specially designed Polyurethane Cable. The cable is reinforced with
Aramid fibres which provide superior tensile strength and low stretch properties. Changes in
temperature have little effect on the overall length of the cable.This feature provides users with the
benefit of self-suspending the sensor to depths of 300m without additional strain relief.
The cable contains 12 x conductors, 1 x drain wire, an internal vent tube and Aramid fibres. The outer
jacket is made from UV stabilized Polyurethane and is suitable for all external, underwater or harsh
environment applications. This common cable construction is utilized for vented and non-vented
Greenspan sensors. Cables are generally factory fitted at time of manufacture in specified lengths.
4.1.3 Mechanical Specifications
•Specially manufactured Greenspan cable with 12 cores and internal vent
•High chemical resilience and abrasive resistance
•Conductor cross section : AWG 24,
•Electrical Resistance 9 ohm per 100m (per conductor)
•Operating temperature: 85°C (max.),
•Bending radius (static) : 6 ,
•Bending radius (dynamic) 12.
•Max Operating voltage : 250V
•Jacket Printing (white colour each meter)
•Conductor colour codes : green, yellow, white, black, brown, turquoise, violet, pink, red,
blue, grey
The moulded cable is fitted to the sensor using a double o ring seal and located using 2 x grub screws.
The length of the cable is not critical to the long term calibration and operation of the sensor (provided
the electrical requirements such as minimum supply voltage are maintained).
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Cable Construction
1 –Vent Tube: Polyamide
(size ID x OD) 2.40 x 3.20 mm
2 – Aramid Fibre
3 - 12 x Conductors
7 x 0.20 mm Tinned Copper
Section = 0.22mm2 AWG24
Insulation: Polypropylene
(size) = 1.10 mm ± 0.05 mm
4 - Tape: Polyester
5 – Drain Wire: 7x0.20 TinCu
6- Tape: Polyester Aluminium
7 - Jacket: Polyurethane black,
(size OD) 8.05 mm ± 0.15
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