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Related Manuals for Observator Instruments ANALITE NEP160
Summary of Contents for Observator Instruments ANALITE NEP160
- Page 1 User Manual Analite NEP160 Portable Turbidity Meter ABN 56 007 283 963 8 - 10 Keith Campbell Court, PO Box 9039, Scoresby, Australia, 3179 Tel: (+61 3) 8706 5000, Fax: (+61 3) 8706 5049 www.observator.com info.au@observator.com...
- Page 2 NEP160 User Manual Copyright – 2000 - 2011 Specifications subject to change without notice. Page 2 of 24...
- Page 3 160 SERIES MICROPROCESSOR BASED TURBIDITY METER The ANALITE 160 turbidity meter is the latest of our range of turbidity measurement instruments. It is designed to operate with either an ANALITE retro-scatter (180°) probe or an ANALITE ISO7027 90° probe. The ANALITE 160 turbidity meter allows the user to set up measurement parameters through a user-friendly menu system displayed on the in-built 2 line alphanumeric display.
- Page 4 Specifications Range: 0 to 30,000NTU (3,000NTU limit on NEP260, 90° probe) (over four ranges automatically determined). Display: 2 line, 16-character dot matrix alphanumeric liquid crystal display. Display Language: English. Parameters Displayed: Turbidity (NTU) - default Relative Turbidity Reference (NTU) Relative Turbidity REL (Turbidity - Relative Turbidity Reference) Date/Time - default Reading: Updated approximately every 1 second.
- Page 5 Analogue Output 0 – 2 volts full scale corresponding to preset measurement range. Output impedance 600 ohms nominal. Power: Internal: 6V NiMH rechargeable battery. External: 10 to 16V dc, 400mA max. incl. NiMH Charge current. External power connection is via jack plug male with 2.5mm pin. Centre pin is NEGATIVE polarity.
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Page 6: Packaging Information
Displays turbidity and the date/time simultaneously. Packaging Information The following are included with every ANALITE NEP160 purchased: The NEP160R Turbidity Meter Display Unit The NEP160 Operation Manual Depending on your order, some or all of the following may also be included: Turbidity Probes (see below). -
Page 7: Normal Operation
Three turbidity probes are available that suit the NEP160R Turbidity Meter. They are: ANALITE NEP280 General Purpose retro-scatter probe capable of measuring turbidity level from 10 to 30,000NTU. The NEP280 can be submersed to a depth of 30m. Standard cable length is 5 meters unless otherwise indicated at time of order. ANALITE NEP285 High temperature retro-scatter probe capable of measuring turbidity level from 10 to 30,000NTU. - Page 8 NEP160 offers an ease of measurement not known before in such a powerful portable turbidity instrument. Battery Care and Maintenance The ANALITE NEP160 is fitted with a NiMH battery that is charged using the in-built controller to maximise life and operating time between charges.
- Page 9 If the instrument is to be stored for a long period of time (say more than 4 weeks), then it is best to fully charge the battery before storage and then recharge again for 12 hours prior to use. A few charge cycles may be required after extended periods of storage to properly reform the cells.
- Page 10 5 characters, right justified. ANALink 2 PC Software A simple MS Windows based program called ANALink 2 is available from Observator Instruments. ANALink 2 allows simple interfacing between an ANALITE NEP160 and a PC operating Windows 95/98/NT/2000/XP/7. The program is approximately 2.5Mbytes in size.
- Page 11 NEP160 Menu Structure A quick reference of the NEP160 operation structure is shown below. Pressing the Menu key evokes the menu structure. Each of the Menu Functions is described in detail elsewhere. Power ON Store to Notepad Copyright Message Toggle Display NORMAL NTU Measurement...
- Page 12 Calibration The probe connected to the NEP160 display unit will determine how the information collected is displayed. But in every case the mathematical treatment is the same as shown schematically below: Internal Probe Temperature Standard Curve Temperature Probe Calibration Algorithm Compensation Algorithm (NTU/°C)
- Page 13 F1.1 Reviewing Probe Information Menu Select the Setup menu by pressing and then F1 Probe Select The display should now look something like this: Type NEP260 S/N 76340 F2:> Press to see the date and time of the last probe calibration. 24/02/99 13.38 FACTORY...
- Page 14 80NTU). Under these circumstances it is best to calibrate the second point near or just above the anticipated readings. In the above example 100NTU would be a good second calibration point. Connect the desired Probe to the ANALITE NEP160 Turbidity Meter Press the button to power the ANALITE NEP160 ON.
- Page 15 F1.3 Calibration - 3 point A three-point calibration is recommended when operating the ANALITE NEP160 over a wide range (say 0 to 10,000NTU) or where exceptional linearity is demanded over a nominal range (say 0 to 100NTU). For purposes of example only, we are using 50NTU and 100NTU as the calibration reference solutions when explaining the three-point calibration procedure below.
- Page 16 Notes on Calibration The NEP160 measures turbidity in NTU. Other units often used are FTU, JTU (Jackson Turbidity Unit) and mg/L (suspended solids). The conversion table below shows the relationship between these units. mg/L (SiO 0.053 0.13 0.053 0.13 mg/L (SiO NEP160 User Manual Copyright –...
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Page 17: Notepad Function
Notepad Function F2.1 Recording Readings into the Notepad. To record readings into the Notepad memory: Press in normal display mode. The display should change to show typically: 700NTU #005 F1:Yes F2:No The top line of the display indicates the reading 700NTU and the following characters #005 indicates the record number of the reading. - Page 18 Mode F3.1 To set Absolute Turbidity measurement mode. Menu Select the Mode menu by pressing and then F1 Abs NTU Select Display will revert to normal, and all measurement will be in absolute NTU. This is confirmed by ensuring the displayed measurements are not followed by the characters F3.2 To set Relative Turbidity measurement mode Menu...
- Page 19 Setup F4.1 Battery Saver The NEP160 is equipped with a battery saver function. When operating under battery power and if no button has been for approximately five minutes, the unit will beep and the display will flash for 20 seconds, thereafter it will shut off. This function can be disabled for continuous use under battery power.
- Page 20 Setting the Clock Menu When in normal display mode select Setup by pressing F4 Setup, F2 Clock then and then Select from the Date format display The display now shows the current date and time. Typically: 31/12/97 12:00 :Set F1< F2>...
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Page 21: Clock Not Set
F4.4 Automatic Data Logging The NEP160 can automatically log records into the Notepad. A maximum of 100 records can be logged into the Notepad. To set up for automatic logging, the logging period must first be programmed. Automatic logging can then be started and stopped as required. -
Page 22: Specifications
AC ADAPTER (CHARGER) REQUIREMENTS Specifications: The AC adapter shall have the following specifications to ensure proper operation of the ANALITE NEP160 whenever it is powered by the AC adapter. Operation also includes the charging of the internal 6V NiMH battery assembly. Output Voltage: 10Vdc (min) to 16Vdc (max) over output current range. - Page 23 OPTIONAL ANALITE PROTECTIVE SHROUD - NEP16SHRD for ANALITE NEP260 probes. 190 mm 18 mm 15 mm INSERT PROBE OD38.2mm 3 off M3 x 9 CSK SS screws @ 120° Flow through holes to fasten to probe end. FITTING Insert the NEP260 probe into the shroud as shown. Ensure end of probe is against internal stop at other end of shroud.
- Page 24 NEP160 User Manual Copyright – 2000 - 2011 Specifications subject to change without notice. Page 24 of 24...
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