Observator Instruments Analite NEP-5000 User manual

Manual | NEP-5000
Status: Final | Not confidential
Page 2 | 105
V20200311
Document history
The Observator range is in continuous development and so specifications may be subject to change
without prior notice. When in doubt about the accuracy of this document, contact the Observator Group.
Reference documents
Type of document / tool
Product type and name (incl. url)
Software
NEP-5000
CFG files
NEP-5000
Datasheet
NEP-5000
Manual
NEP-5000
Application notes
NEP-5000-SDI-12 option with Campbell logger
NEP-5000-SDI-12 option for H-522+ & H-500XL loggers
NEP-5000-SDI-12 option with Hydrospider logger
NEP-5000-SDI-12, RS485 and analogue: wiper operations
NEP-5000 multi-point calibration
NEP-5000 firmware updating procedure
Pressure calibration
Shroud installation
Temperature calibration
Wiper replacement

Manual | NEP-5000
Status: Final | Not confidential
Page 3 | 105
V20200311
Revision history
Date
Amendments
Company, position
2017-08-07
Initial document creation
Observator Australia,
Document Controller
2018-04-01
Edited overall content
Observator Australia,
Document Controller
2018-04-09
Introduced document control
Observator Australia,
Document Controller
2019-03-06
Added reference documents
Observator Australia,
Document Controller
2019-03-15
Integrated 2-point calibration information.
Compress document images.
Added additional reference documents.
Observator Australia,
Document Controller
2019-03-17
Added reference documents
Observator Australia,
Document Controller
2019-07-02
Quality review
Observator Australia,
Communication Officer
2019-08-16
Edited packing list
Observator Australia,
Document Controller
2019-08-29
Edited packing list
Observator Australia,
Document Controller
2020-03-03
Updated document format
Added NEP-CBL-CON diagrams
Observator Australia,
Document Controller
Procedure sign-off:
Date
Company, position
Status
2018-04-09
Observator Australia, Document Controller
Finished
2019-08-27
Observator Australia, Managing Director
Approved
2020-03-10
Observator Group, Communication Officer
Approved
Distribution list
Date
Company, position

Manual | NEP-5000
Status: Final | Not confidential
Page 4 | 105
V20200311
Summary
Thanks for purchasing the new NEP-5000 turbidity probe. It will give you years of service if you install and
maintain the probe according to the guidelines set out in this manual.
Our successful NEP-5000 family of Analite turbidity sensors offers enhanced performances in a small and
revolutionary design with greater ease of deployment at lower cost. The NEP-5000 turbidity probes are
designed for monitoring and process applications where turbidity levels of up to 5,000NTU may be
encountered. Standard ranges are 10NTU, 400NTU and 5,000NTU, but custom ranges are available. The
NEP-5000 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 NEP-5000 may be submerged to a depth of
100 meters (approximatively 328 feet).
The NEP-5000 turbidity probes use 90° optics and employs infra-red light in accordance with international
ISO 7027. All probes use a unique modulation technique that ensures almost total rejection of ambient
light conditions. It also has a unique microprocessor controlled differential sample and hold circuit for
enhanced performance, particularly at low turbidity levels.
This product is ideal for portable application, as well as field and laboratory applications for long term
monitoring. Simple to operate, the NEP-5000 can be customized and upgraded. Data logging can also be
performed using application on your Windows tablet using Bluetooth communication.
The new NEP-5000 series of turbidity sensors also has the added benefit of a self-cleaning, auto-ranging
field instrument. The system can be cabled or directly connected to the wireless module for quick field
process reading.
Note: Please refer to manual V4.5 and below for sensor manufactured prior to 2018.

Manual | NEP-5000
Status: Final | Not confidential
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Table of contents
1 Applications .................................................................................................................... 8
2 Safety ............................................................................................................................... 9
3 Specification ..................................................................................................................10
4 What you will find in the box .........................................................................................13
5 Accessories ....................................................................................................................14
6 How to use this manual (where to begin?) ...................................................................16
6.1 Default settings .................................................................................................................................. 16
6.2 Finding the correct wiring diagram for your sensor ........................................................................... 17
6.3 How to configure and calibrate your sensor ...................................................................................... 17
6.4 What is required for your calibration and configuration ..................................................................... 17
6.4.1 SubConn with NEP-CBL-CON option ..................................................................................... 17
6.4.2 SubConn options only ............................................................................................................. 18
6.4.3 Glanded-NEP options only ...................................................................................................... 19
6.5 Connect the calibration module ......................................................................................................... 20
7 NEP-5000 capabilities ....................................................................................................21
7.1 Features in measuring ....................................................................................................................... 21
7.1.1 Single-range measurement ..................................................................................................... 22
7.1.2 Auto-range measurement ....................................................................................................... 22
7.2 Features in communication ............................................................................................................... 23
7.2.1 Periodic data free-flow ............................................................................................................ 23
7.2.2 Data-request mode (polled-mode) .......................................................................................... 25
7.2.3 SDI-12 mode ........................................................................................................................... 29
7.2.4 Measurement via Analog interface ......................................................................................... 32
7.3 Optical wiper: Features and configurations ....................................................................................... 35
7.3.1 Basic optical wiper configuration ............................................................................................. 35
7.3.2 Recommended method of triggering the optical wiper using a dedicated wiper wire ............. 36
7.3.3 Available optical wiping options for output configurations ...................................................... 37
8 Pinout & wiring diagram ................................................................................................38
8.1 RS232/Analog SubConn connector option (#WD1) .......................................................................... 42
8.1.1 #WD1-A RS232 SubConn ...................................................................................................... 43
8.1.2 #WD1-B Analog SubConn ...................................................................................................... 45
8.1.3 #WD1-C Voltage SubConn ..................................................................................................... 46
8.2 RS232/Analog glanded-NEP cable option (#WD2) ........................................................................... 47
8.2.1 #WD2-A RS232 glanded ......................................................................................................... 48
8.2.2 #WD2-B Analog glanded......................................................................................................... 50
8.2.3 #WD2-C Voltage glanded ....................................................................................................... 51
8.3 RS485/RS422/Analog SubConn connector option (#WD3) .............................................................. 52
8.3.1 #WD3-A RS485 SubConn ...................................................................................................... 53
8.3.2 #WD3-B Analog SubConn ...................................................................................................... 54
8.3.3 #WD3-C Voltage SubConn ..................................................................................................... 55
8.3.4 #WD3-D RS422 SubConn ...................................................................................................... 56
8.4 RS485/RS422/Analog glanded-NEP cable option (#WD4) ............................................................... 57

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8.4.1 #WD4-A RS485 glanded ......................................................................................................... 58
8.4.2 #WD4-B Analog glanded......................................................................................................... 59
8.4.3 #WD4-C voltage glanded ........................................................................................................ 60
8.4.4 #WD4-D RS422 glanded......................................................................................................... 61
8.5 RS485/Pressure SubConn connector option (#WD5) ....................................................................... 62
8.5.1 #WD5-A RS485 SubConn ...................................................................................................... 63
8.6 RS485/Pressure glanded-NEP cable option (#WD6) ....................................................................... 64
8.6.1 #WD6-A RS485 glanded ......................................................................................................... 65
8.7 SDI-12/Analog SubConn connector option (#WD7) .......................................................................... 66
8.7.1 #WD7-A SDI-12 SubConn ...................................................................................................... 67
8.7.2 #WD7-B Analog SubConn ...................................................................................................... 68
8.7.3 #WD7-C voltage SubConn ...................................................................................................... 69
8.8 SDI-12/Analog glanded-NEP cable option (#WD8)........................................................................... 70
8.8.1 #WD8-A SDI-12 glanded......................................................................................................... 71
8.8.2 #WD8-B Analog glanded......................................................................................................... 72
8.8.3 #WD8-C voltage glanded ........................................................................................................ 73
9 Connect to the calibration software .............................................................................74
9.1 Installing the probe for the first time .................................................................................................. 74
9.1.1 Install calibration module driver .............................................................................................. 74
9.1.2 Run NEP-OEM software ......................................................................................................... 76
9.2 Make the calibration connection with the sensor .............................................................................. 77
9.2.1 Serial number .......................................................................................................................... 79
9.2.2 Password ................................................................................................................................ 79
9.2.3 Sensor ID ................................................................................................................................ 79
9.2.4 Available sensor options ......................................................................................................... 79
10 Turbidity calibration .......................................................................................................80
10.1 When do you need to calibrate? ....................................................................................................... 81
10.2 Two-point calibration requirements ................................................................................................... 81
10.3 Before you begin calibration .............................................................................................................. 82
10.4 2-point calibration for 3 ranges .......................................................................................................... 84
10.4.1 Clean the sensor ..................................................................................................................... 84
10.4.2 Dry the sensor ......................................................................................................................... 84
10.4.3 Connect to the calibration software ......................................................................................... 84
10.4.4 Load the optical profile ............................................................................................................ 85
10.4.5 Set up zero-point calibration values for all ranges .................................................................. 87
10.4.6 Set up low-range top calibration value .................................................................................... 90
10.4.7 Set up mid-range top calibration value ................................................................................... 94
10.4.8 Set up high-range top calibration value .................................................................................. 98
11 Frequently Asked Questions (FAQ) - do/don’t ........................................................... 102
11.1 Calibration ....................................................................................................................................... 102
11.2 RMA Requests ................................................................................................................................ 102
11.3 SDI-12 ............................................................................................................................................. 103
11.4 Analog ............................................................................................................................................. 103
11.5 User maintenance: .......................................................................................................................... 103
11.6 Software .......................................................................................................................................... 103
11.7 Deployment ..................................................................................................................................... 103
12 Electrical conformity .................................................................................................... 104

Manual | NEP-5000
Status: Final | Not confidential
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1 Applications
The NEP-5000 probes typical use includes applications such as:
1. Water quality
2. Food processing
3. Waste treatment
4. Environmental compliance for dredging operations
Which model is best used will be dependent on the application, the measuring environment, the logging
equipment and the monitoring period (deployment times) required.
Although advanced digital processing in the Analite NEP-5000 will effectively measure the true turbidity of
water when large particles are passing by the optical face, it is recommended to take steps to protect the
optical face from possible abrasive effects these particles may cause.
The Analite turbidity probes are not suitable in situations where they may be abraded by large particles
such as sand. Under these circumstances, the reading may become erratic due to the large particles
passing the optic sensor. Measuring turbidity under such potentially abrasive circumstances may require a
stilling well to allow the sand or other hard particles to settle away from the optic sensor in the probe tip.

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2 Safety
Always refer to the appropriate wiring diagram and apply appropriate power levels to the
sensor to avoid potential destruction of the sensor that may also harm you.
Do not connect anything potentially electrical to the metal body of the sensor as it may
result in electrical shocks that could harm you or destroy your instruments.
Do not attempt to force the wiper mechanism while operating or you may harm yourself
due to the higher torque level.
When using calibration solutions such as AMCO Clear®, StableCal® or formazin, avoid
skin/eye contact and do not consume the solution in any quantity.
Please check with your supplier or material specifications before using the sensor in an
unknown chemical.
Take appropriate precaution when handling or servicing pre-deployed sensors; they may
be exposed to radioactive and hazardous solutions.
After the end of the life of the product, please dispose of it according to your local
regulations or return it to the manufacturer.

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3 Specification
Glanded sensor dimensions
Length
321.37mm
Diameter
31.70mm
SubConn sensor dimensions
Length
274.5mm
Diameter
31.7mm

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Mechanical
Weight
NEP-5000 Delrin models 300 grams – probe only*.
NEP-5000 metal models 770 grams – probe only*.
*100gms connector plus 70 grams per meter of cable.
Case construction
Delrin composite casing is standard.
316 stainless steel
Titanium
Anti-biofouling CW352H 70/30% Copper/Nickel.
Cable
Glanded-NEP cable specification:
7 cores + shield, 6mm nominal dia. Polyurethane (PUR) sheath.
Conductor resistance 45 ohms per km. Weight - 70 grams per meter.
SubConn connector cable specification:
6-conductor inline cable, 16 American Wire Gauge (AWG), 1.34mm².
Cable length
Standard glanded-NEP cable length to be specified at time of order.
Per meter price applies. Maximum cable length is 200m. Length
depends on the selected communication protocol.
Depth rating
200m (660ft), non-wiping.
100m (330ft), wiping.
Operating temperature
-10°C to 40°C
Storage temperature
-20°C to 50°C
Measurement
Technique
90° modulated infra-red (ISO 7027) is standard.
180° backscatter modulated infra-red is optional.
Ranges for 90° (3-preset
range groups)
Low (example 0-10/20/100NTU).
Medium (example 0-100/400/1,000NTU).
High (example 0-1,000/3,000/5,000NTU).
Ranges for 180° (3-preset
range groups)
Low (example 0-1,000/5,000NTU).
Medium (example 0-10,000NTU).
High (example 0-30,000NTU).
Recommended range versions
V1 NTU ranges: 10, 400, 1,000.
V2 NTU ranges: 10, 400, 5,000.
V3 NTU ranges: 100, 1000, 5,000.
V4 NTU ranges: user specified.
Custom ranges
Available
Range hopping (auto-range)
Available

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Status: Final | Not confidential
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Specification
Accuracy including linearity &
temperature drift
±1% at 25°C, up to 5,000NTU
Zero drift
Less than ±0.2NTU
Calibration
Factory calibrated using non-toxic AEPA polymer solutions.
Power
8-30V Direct Current (DC)
• 15mA on
• 25mA reading
•
60mA wiping
Settling time/measurement
acquisition time
Single range (2-4s), auto-range (4-6s)
Wiping
Wiping is configurable via the Personal Computer (PC) configuration
tool such as: wiping mode, timeout, power on wipe.
Wipe time
8s in single direction wipe mode.
12s for return wipe mode.
18s for scrubbed wipe mode.
Range
Resolution
Resolution
Up to 100NTU
±0.01NTU
Up to 400NTU
±0.1NTU
Up to 1,000NTU
±1.0NTU
Up to 5,000NTU
±2.0NTU

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4 What you will find in the box
When the product is delivered, this is what you will find in the box:
Items found in the box
NEP-5000 Probe
NEP-5000
NEP-CBL - Probe cable in meters.
Blue box calibration module and Universal Serial
Bus (USB) cable*
Module and PC configuration and calibration
software.
NEP-CFG
(*) on your first NEP-5000 order only.
SubConn female pigtail**
NEP-CFG-SF
(**) Only included in the shipment when the
NEP-5000 has a male SubConn connector.
Wiring is different for SDI-12 and RS422/RS485.
USB key
Yellow cap
Wiper replacement kit
NEP-WIPER-KIT - comprising of 4 silicon wipers
and a hex fastening key.

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5 Accessories
Observator Instruments offers a wide range of accessories for the
NEP-5000 range of products directly available from the website:
Accessories
Case
NEP-CASE
Wiper replacement kit
NEP-WIPER-KIT - comprising of 4 silicon wipers and
a hex fastening key.
Shroud
NEP-SHRD-D - Delrin protective shroud
NEP-SHRD-C - Copper protective shroud
NEP-SHRD-S - Stainless steel protective shroud
NEP-SHRD-T - Titanium protective shroud
Calibration kit for glanded probes
NEP-CFG - comprising of a blue box calibration
module and USB cable.

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Accessories
Calibration kit for SubConn probes**
NEP-CFG-SF - comprising of a blue box calibration
module, USB cable and a SubConn female pigtail.
(**) Only for NEP-5000 with male SubConn
connector.
Wiring is different for SDI-12 and RS422/RS485.
Calibration solutions
NEP-CAL-GSF
Brown bottle for calibration
NEP-CAL-BTL
NEP-5000 connection cable
NEP-USB-CON
SubConn connector and cable assembly
NEP-CBL-CON

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6 How to use this manual (where to begin?)
All NEP-5000 sensors come with default factory settings which are unique to each sensor variation of the
NEP-5000. Users may also request desired settings at the time when placing the order.
6.1 Default settings
The default settings for each NEP-5000 glanded & SubConn configuration are as follows:
SUB-RS232
/Analog
SUB-RS485
/RS422/Analog
SUB-RS485-
Pressure
SUB-SDI-12
/Analog
Calibration
Multi-point
Multi-point
Multi-point
Multi-point
Measurement
mode
Auto
Auto
Auto
Auto
Statistical
package
5 measurement
length
5 measurement
length
5 measurement
length
5 measurement
length
Optical-wiper
Single direction
Single direction
Single direction
Single direction
Power on wipe
Yes
Yes
Yes
Yes
Digital data mode
RS232 free-flow
RS422 free-flow
RS485 polled
SDI-12 command
mode
Sensor address
1
1
1
SDI-12 address
0
Analog output
Off
Off
Off
Figure 6.A: Default settings for each NEP-5000 configurations
Note: If satisfied with the current default settings or pre-ordered configurations from the factory, the
user does not need to use the calibration software nor do they require to do any changes to the
settings.

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6.2 Finding the correct wiring diagram for your sensor
To find out the appropriate wiring diagram for calibration and general use, the user may refer to the table
on chapter 8: “Pinout & wiring diagram”. This selection table also includes reference to the recommended
wiring diagrams via tag markers (#WD1 to #WD8).
6.3 How to configure and calibrate your sensor
The NEP-5000 offers easy configuration methodology using single wire (one-wire) communication to the
configuration software. Using this configuration, the user only requires to connect 3 wires during the time
of the calibration process.
To facilitate trouble free communication with the PC, Observator Instruments provides a module called
“calibration module” that converts one wire calibration data to USB and generates 12V DC from available
USB 5V.
6.4 What is required for your calibration and configuration
NEP-5000 sensors come with SubConn or glanded-NEP cable options. This section describes the
equipment required to connect each sensor option to the calibration module.
6.4.1 SubConn with NEP-CBL-CON option
1. Connect your NEP-5000 SubConn option to the NEP-CBL-CON cable provided in your NEP-5000
kit (Figure 6.B).
Figure 6.B: Probe connection to NEP-CBL-CON
Note: The calibration module that plugs into the USB port must be able to provide more than 200mA
at 5V. If not, the user may provide external power using 12V DC, 500mA plug-pack.
1
Detail #1
SCALE 2:1

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2. Connect the NEP-CBL-CON to the blue box calibration module (refer to section 6.5: “Connect the
calibration module”).
Figure 6.C: Example of configuration for SubConn SDI-12 probes
6.4.2 SubConn options only
1. Connect your NEP-5000 SubConn option to the SubConn female pigtail provided in your NEP-5000
kit (Figure 6.D).
Figure 6.D: Probe connection to SubConn female pigtail
Note: Always be mindful of following the correct pinout which changes based on your probe
configuration.
1
Detail #1
SCALE 2:1

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2. Connect the SubConn female pigtail to the blue box calibration module (refer to section 6.5:
“Connect the calibration module”).
Figure 6.E: Example of configuration for SubConn SDI-12 probes
6.4.3 Glanded-NEP options only
Connect the SubConn female pigtail to the blue box calibration module (refer to section 6.5: “Connect
the calibration module”).
Figure 6.F: Example of configuration for SubConn SDI-12 probes
Note: Always be mindful of following the correct pinout which changes based on your probe
configuration.
Note: Always be mindful of following the correct pinout which changes based on your probe
configuration.

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6.5 Connect the calibration module
NEP-5000 probes are calibrated using the “Blue box calibration module” (see Figure 6.G).
1. Connect your sensor(s) to the calibration module according to the “Pinout & wiring diagram” table
on chapter 8.
Calibration module pin
number
Refer to
Sensor wire to connect
Pin 1
(Figure 6.G: #1)
“PWR”
Pin 2
(Figure 6.G: #2)
“GND”
Pin 6
(Figure 6.G: #6)
“COMMS” (calibration/wiper)
2. Power the calibration module using 12V DC plug pack if your USB port cannot provide more than
200mA off power, otherwise plug pack is not required (Figure 6.G: #5).
3. Connect the provided USB cable to the calibration module (Figure 6.G: #4).
4. Refer to chapter 9, in order to “Connect to the calibration software”. Press reset when required to
reset the communication (Figure 6.G: #3) with the sensor.
Figure 6.G: Bluebox calibration module
Note: Wiper button allows user to test the wiper when the sensor is in Analog mode.
USB cable
to
computer 12V DC
3
4 5
1 2 6
NEP-5000 calibration connection
RESET button
WIPER button
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