Observator Instruments NEP-9500 Series User Manual Download Page 1

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Observator Instruments V1.01

Page 1

NEP-9500 SERIES

TURBIDITY PROBE

User Manual

Version 1.01 – Oct 2017

Author: Observator Instruments

NEP-9500 SERIES

TURBIDITY PROBE

ABN 56 007 283 963

8-10 Keith Campbell Court, PO Box 9039

Scoresby, VIC 3179 AUSTRALIA

Tel: +61 3 8706 5000, Fax: +61 3 8706 5049

Email: [email protected]

Web: www.observator.com

Summary of Contents for NEP-9500 Series

Page 1: ... PROBE User Manual Version 1 01 Oct 2017 Author Observator Instruments NEP 9500 SERIES TURBIDITY PROBE ABN 56 007 283 963 8 10 Keith Campbell Court PO Box 9039 Scoresby VIC 3179 AUSTRALIA Tel 61 3 8706 5000 Fax 61 3 8706 5049 Email info au observator com Web www observator com ...

Page 2: ...nts for more information Document Name Download from Author Online Training documents http download observator com files dir User manuals NEP 9500 Ludovic Grosjean Latest NEP5000 Manual http download observator com files dir Software NEP50xx Provides an in depth information of the configuration and calibration Niran Pelpola Distribution list This document has been distributed to Name Company Posit...

Page 3: ...ing considerations 12 6 DESCRIPTION 13 7 ACCESSORIES 14 8 INSTALLATION 15 Install the probe for the first time 15 Physical cabling considerations 16 Miscellaneous 16 9 DEPLOYMENT 17 Installation 17 Deploy the probe 18 Retrieve the probe 19 10 MAINTENANCE 20 Wiper replacement 20 Cleaning the sensor 22 11 ELECTRICAL CONFORMITY 23 EC Declaration of Conformity according to Council Directive 89 336 EEC...

Page 5: ...400NTU 1 000NTU 3 000NTU and 5 000NTU Specifically the ANALITE NEP 9500 probes are designed for applications that will not allow bio fouling to build up such as short monitoring deployment or placement in fast and cold running water The ANALITE NEP 9500 probes however with their integral wiper assembly are designed where bio fouling or sedimentation buildup is likely The ANALITE NEP 9500 series of...

Page 6: ...rial process monitoring 8 Sludge and dredge monitoring 9 Sediment load monitoring Which model is best used is dependent on the application the measuring environment the logging equipment and the monitoring period deployment times required The ANALITE turbidity probes are not suitable in situations where they may be abraded by large particles such as sand and under these circumstances the reading m...

Page 7: ... functioning of Observator NEP 9500 the sensors must be installed according installation instructions Never obstruct the wiper or prevent the wiper from wiping Always clean and dry the sensor after use After end of life dispose this product according local regulations or return to manufacturer ...

Page 8: ...servator Instruments V1 01 Copyright 2017 Page 8 4 SPECIFICATION Glanded cable option default Turbidity sensor Dimensions Length 320 4mm Diameter 31 70mm Subconn option Turbidity sensor Dimensions Length 297mm Diameter 31 7mm ...

Page 9: ...0 C to 50 C Wiper Wiper Arrangement NEP 9500 SERIES only Disposable and consumable Foam Pad on PVC or Acetal arm Field replaceable Mounted on central shaft fixed by hex set screw onto flat of wiper shaft Actuation NEP 9500 SERIES only 1 By external TTL CMOS active low pulse or momentarily contacting the wiper actuation conductor pin 5 to 0V pin 3 2 Automatic wipe periodic and power on Please speci...

Page 10: ...omentarily reseting the probe specify during the ordering 2 A periodic automatic wipe specify during the ordering Voltage Output version ANALITE NEP 9500 probes may have an analogue voltage output with a nominal output impedance of 500 ohms For particularly long cable runs the 4 20mA current output version is recommended Wire color Voltage option Green Ground 0V Common Shield Shield No connection ...

Page 11: ...below For very long cable runs 200m it may be advisable to connect the NTU Return conductor to the Supply Common conductor at the end of the cable to reduce the voltage drop along the run When a NEP 9500 series probe is ordered with the 4 20mA current output the probe is configured as a high current source The load must be less than 270 ohms to ensure proper operation over the probe s specified po...

Page 12: ...be considered given that many installations are in the wild It is important to note that the NEP 9500 series probes have the stainless steel casing terminated only to the cable shield There is no electrical contact between the casing terminated only to the cable shield There is no electrical contact between the casing and the probe electronics The signal ground 4 and power ground 3 are electricall...

Page 13: ... you will find in the box Product identification Each product code can be used to identify each product specification and determine which wiring must be used for the configuration as detailed in the examples below Items found in the box Figure 1 1 NEP 9500 Probe NEP CBL XX Cable Length XX in meters to be specified at time of order ...

Page 14: ...17 Page 14 7 ACCESSORIES Observator Instruments offers a wide range of accessories for NEP 9500 range of product directly available from the website Accessories Figure 2 1 Case Figure 2 2 Wiper replacement kit Figure 2 3 Shroud NEP 9SHRD Stainless protective shroud ...

Page 15: ...d from accidental scratching or abrasion The wiper arm assembly should be replaced periodically to avoid abrasive material build up in the pad that may eventually abrade the optic face The optic face is partially protected from damage by the protruding castellation in the probe casing To avoid crevice corrosion on the 6 stainless steel casing in salt and acidic water deployments it is strongly rec...

Page 16: ... must be taken to ensure the connectors are properly mated to ensure a seal yet not screwed together too tightly so as to make their disconnection difficult after a long deployment Prior to mating make sure both the probe and cable connectors are dry in the termination area otherwise erratic operation may occur due to moisture Miscellaneous The wiper on the NEP 9500 probes can be actuated by momen...

Page 17: ...ements Typical example involves the use of an extension cable for Subconn connector Option which can be purchased separately Connect the Subconn Female extension cable to the probe according to the matching pin configuration as shown below Make sure the connector is sealed by screwing tight the connector Install the probe to the mounting location ready for deployment ...

Page 18: ...ring appropriate safety equipment in safe operation conditions 2 The probe is normally installed with the optics pointing downwards but not vertical or in a horizontal alignment 3 In a simple application the probe is simply immersed into the water to the desired depth but within the depth rating of the probe Please note the depth rating is based on static water ...

Page 19: ...ptic face is partially protected from damage by the protruding castellation in the probe casing If the probe body is to be installed in a glanded fitting for insertion into a pipe etc the care must be taken to ensure the sealing surface pressures offered by the gland fitting are not excessive so as to not cause distortion of the probe casing and force leakage The NEP 9500 probes are thin wall inst...

Page 20: ...the wiper pad to determine if the material is deteriorating or is impregnated with material from bio fouling Normally the wiper should be replaced every 4 to 6 weeks of deployment In addition as a precaution we recommend changing the wiper prior each deployment The wiper is a consumable item and a spare is provided with each NEP 9500 series probe along with a hex key to loosen and fasten the wiper...

Page 21: ...y one half its original thickness Tighten the set screw do not over tighten It is important that the wiper arm does not make contact with the probe face only the pad should be in contact A gap of 0 5mm between the wiper arm and the optic face is typical when a new pad has been properly installed Note It is imperative that the set screw be fastened squarely aligned onto the flat on the shaft otherw...

Page 22: ...recommended that the probe be thoroughly washed in clean water after deployment and prior storage On the field wash the probe with fresh water and clean it with a soft cloth In the office we recommend to clean the sensor with isopropyl alcohol available from grocery store and dry the sensor with compressed air ...

Page 23: ...ruments Pty Ltd To which this declaration relates are in conformity with the protection requirements of Council Directives 89 336 EEC on the approximation of the laws relating to electromagnetic compatibility This Declaration of Conformity is based upon compliance of the product with the following harmonized standards Emissions EN50081 1 1992 Immunity EN50082 1 1997 Signed by Dana Galbraith Managi...

Page 24: ...ndition for details Telephone Technical Support You can contact us any time about Technical Support Repair and Service Coverage Please enquire about a maintenance program If warranty or repair is required please request an RMA number at the Observator Website https observator com en support rma request You will need 1 Your Serial Number can be found on the probe sticker 2 A valid E Mail S N 108 22...

Page 25: ...stributor from whom you purchased the probe or our Service Centre If the probe is being returned for service under warranty please supply proof of purchase and the Warranty document which has been emailed to you during the warranty registration All support enquiries must include 1 The serial number of the probe labelled on the casing of the probe 2 The shipping address for probe returns Contact mo...

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