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Summary of Contents for OTT ecoN
- Page 1 Operating instructions UV Nitrate Sensor OTT ecoN...
- Page 2 Technische Änderungen vorbehalten!
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Page 3: Table Of Contents
Appendix A – Dimensions Appendix B – Accessories: Mechanical wiper B1 – Preparing the mechanical wiper B2 – Installing the mechanical wiper on the OTT ecoN B3 – Electrically connecting the mechanical wiper B4 – Changing the wiper blade B5 – Mechanical wiper technical data... -
Page 5: Scope Of Supply
– For cleaning the optical path – Without wiper shaft and wiper blades – For mounting on the OTT ecoN housing tube – Permanently attached connecting cable with M8-connector*; 10 metres – Connecting cable with M8-socket* and open ends; 1.5 metres... - Page 6 – 10 mm 63.300.032.9.0 – 50 mm 63.300.033.9.0 G2 Interface Box for configuring the OTT ecoN via a local network (LAN, Local Area Network); Ethernet interface (RJ45 socket); optional WLAN; OTT ecoN connection via M12 socket – with WLAN connection 63.300.020.9.0 –...
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Page 7: Basic Safety Instructions
OTT ecoN. Retain these operating instructions for subsequent reference. The OTT ecoN is used for continuous measurement of the nitrate content of ground and surface water. Measurement in water with a salt content of > 1 PSU is not possible. -
Page 8: Introduction
This compensates for a fluctuating or deterio- rating light source output. The additional attenuations measured at wavelengths of 254 nm and 360 nm also enable the OTT ecoN to compensate for organic inter- ference or turbidity of the water. - Page 9 The OTT ecoN can be installed in different ways: Suspension in an observation well, attached to a suitable substrate with fastening clips or attached to a float. Maintenance work, cleaning, zero point checking and checking the reference values / quality index can be carried out by support staff themselves. The nitrate sensor can be calibrated either in the factory by the OTT repair centre or by trained specialist personnel with the appropriate equipment.
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Page 10: Installing The Ott Econ
OTT ecoN can be tem- porarily uninstalled for maintenance without excessive work;... -
Page 11: Installing In An Observation Well
5.1 Installing in an observation well Suspend the OTT ecoN on a non-corroding chain or a stainless steel cable. To do this, attach the chain/cable to the mounting rod with a shackle. Suspend the connecting cable on the chain/cable with an ISO anchor clamp or with cable ties. -
Page 12: Installing With Fastening Clamps
5.2 Installing with fastening clamps Attach the OTT ecoN to a suitable substrate with fastening clips and the enclosed installation accessories (see "Accessories"). Attach the fastening clips as closely as possible to the ends of the sensors. The substrate should be non- corroding. -
Page 13: Installing On A Float
This is the preferred installation type for surface water with significant fluctuations in the water level Attach the OTT ecoN to the float (see "Accessories") as shown in Figure 6. Attach the fastening clamps as closely as possible to the ends of the sensors. -
Page 14: Electrical Connection
With electrically isolated OTT ecoN and Modbus master voltage supplies: Also loop the earth (GND) connection through to the RS-485 interface. The OTT ecoN is ready to operate as soon as the supply voltage is switched on. Note: When connecting an OTT ecoN that is not continuously supplied with... -
Page 15: Setting The Operating Parameters
The sensor is equipped with an integrated web interface for setting the operating parameters on the OTT ecoN. To use this, the OTT ecoN must be temporarily con- nected to a PC using an interface box (see "Accessories"). Any internet browser can be used as the user interface. -
Page 16: Calling Up The Ott Econ Web Interface
In the browser, enter one of the following: – http://ecoN.ott/ – http://ecoN_serial number/ – http://192.168.77.1/ and press enter ¨ The home page of the OTT ecoN user interface opens (in English). Fig. 9: OTT ecoN user interface. Web interface menu structure "Overview"... - Page 17 "System" – "Common Settings", "Description": e.g. station name/description – "Current Date and Time": internal date and time on the OTT ecoN – "Recovery Point": this function is reserved exclusively for OTT service person- nel or specially trained users; "login"/"password" required –...
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Page 18: Modbus Protocol (Rtu)
9600 bps Operating parameter "Measurement |"Automatic" Combined with OTT netDL: activated Note: When connecting the OTT ecoN to an IP Datalogger OTT netDL, the OTT netDL configuration is limited on using Modbus function "Read Holding Registers" (0x03). 7.2 "Read Holding Registers" (0x03) / "Write Multiple Register" (0x10) functions... -
Page 19: Write Single Registers" Function (0X06)
7.3 "Write Single Registers" function (0x06) Writing the value "0x0101" into the register "0x0001" starts a single measure- ment. Afterwards the measured values can be read out via function "Read Holding Registers". 7.4 "Report Server ID" function (0x11) This function outputs the sensor name, the serial number and the firmware version each "null terminated". -
Page 20: Maintenance
If required: Remove any residual dirt with a soft sponge or brush. For lime scale deposits: Place the OTT ecoN in a 10 % citric acid or acetic acid solution for approx. 15 ... 30 minutes. For brown deposits (iron or manganese oxide): Place the OTT ecoN in a 5 % oxalic acid or 10 % ascorbic acid solution for approx. -
Page 21: Checking The Ott Econ Zero Point
20 °C Ultra pure water temperature: 20 °C Note After cleaning the OTT ecoN, do not touch the measuring windows or the housing in the area of the optical path. Wear clean laboratory gloves to check the zero point. If impurities are detected in the ultra pure water when checking the... -
Page 22: Calibrating The Ott Econ
0.4 mg/L -N with 10 mm path length the zero point is OK! If the values are equal to or higher than that figure, the OTT ecoN needs to be recalibrated, see Chapter 8.3! 8.3 Calibrating the OTT ecoN The nitrate sensor can be calibrated either in the factory by the OTT repair centre or by trained specialist personnel with the appropriate equipment. -
Page 23: Checking Ott Econ Reference Values
8.4 Checking OTT ecoN reference values The OTT ecoN has 5 reference measured values, which can be used to check correct functioning of the device: Sensor-Quality-Index: – SQI – RefA Light intensities: (Wavelength 212 nm) – RefB (Wavelength 254 nm) –... -
Page 24: Repairs
+49 831 5617-439 repair@ott.com Please note: Only have a defective OTT ecoN checked and/or repaired by the OTT repair center Never attempt to repair the unit yourself. Any repairs or attempted repairs carried out by the customer will void any warranty. -
Page 25: Technical Data
11 Technical data Measuring technology Ligth source Xenon flash lamp Detector 4 photo diodes + filter Measurement principle Attenuation (optical attenuation) Optical path 0.3 mm 1 mm 2 mm 5 mm 10 mm Parameter (calibrated with NO standard solution) Measuring range 0.3 mm optical path 1.65 …... -
Page 26: Measuring Range, Limits, Accuracy Depending On Path Length
12 Measuring range, limits, accuracy depending on path length Path length Measuring parameter Measuring range Detection limit Determination limit Precision Accuracy [mm] [mg/L] [mg/L] [mg/L] [mg/L] [mg/L] Nitrate NO 0 … 200 1.65 4.95 0.495 ± (5 % + 3.3) Nitrate NO 0 …... -
Page 27: Appendix A - Dimensions
Appendix A – Dimensions all dimensions in mm... -
Page 28: Appendix B - Accessories: Mechanical Wiper
Appendix B – Accessories: Mechanical wiper OTT ecoN UV nitrate sensors with path lengths (measuring ranges) of 1, 2, 5 and 10 mm can be equipped with an optional mechanical wiper (see "Accessories") for cleaning the optical path. Depending on the path length, a corresponding wiper shaft and a wiper blade are required (see "Spare parts/consumables"). -
Page 29: B1 - Preparing The Mechanical Wiper
This requires a wiper blade set appropriate for the path length (measuring range) of the OTT ecoN; see "Spare parts/consumables". Risk of damage to the OTT ecoN Observe the path length of the OTT ecoN: only install a corresponding wiper shaft with associated wiper blade. Installing the wiper shaft and wiper blade: Lightly grease the O-ring on the wiper shaft with the lubricating grease supplied. - Page 30 Position the cover on the wiper shaft and attach it with the screws and Torx key supplied. Fig. B4: Attaching the cover. Align the wiper blade (see figure) and slide it onto the wiper shaft until it locks into place (clicking sound). Fig.
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Page 31: B2 - Installing The Mechanical Wiper On The Ott Econ
OTT ecoN. Attach the lower housing section to the OTT ecoN using the adjusting screw. Fit the upper housing section on the OTT ecoN housing tube and attach using the four hexagon socket screws supplied (size: 2.5 mm). - Page 32 Connect the connecting cable with open ends (M8 socket) to the mechanical wiper connecting cable (M8 connector). Please note: The M8 industrial con- nectors are not pressure water tight ¨ Not suitable for use under water (degree of protection: IP 67). Connect the brown/white wire to the switched supply voltage (+).
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Page 33: B4 - Changing The Wiper Blade
When all wiper blades in a set are worn, you need a new set as in this case the wiper shaft, O-ring and cover also need to be replaced. (The mechanical wiper does not need to be detached from the OTT ecoN.) Risk of damage to mechanical wiper (gearing) Avoid mechanical loads on the wiper shaft and the wiper blade! Never turn the wiper shaft by hand. -
Page 34: B5 - Mechanical Wiper Technical Data
B5 – Mechanical wiper technical data Supply voltage 12 … 24 V (± 10 %) Power consumption active approx. 2 … 6 W Standby ≤ 30 mW For use with path lengths 1 mm 2 mm 5 mm 10 mm Positive operating pressure max. -
Page 35: Appendix C - Note On Declaration Of Conformity
Appendix C – Note on Declaration of Conformity If necessary, you can download the current version of the Declaration of Conformity for the OTT ecoN from our website as a PDF file: "www.ott.com/resources". - Page 36 OTT Hydromet GmbH Ludwigstrasse 16 87437 Kempten · Germany Telefon +49 831 5617-0 Telefax +49 831 5617-209 Document number 63.300.001.B.E 01-0918 info@ott.com · www.ott.com...
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