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Nivetec Thermo Scientific AquaSensors AquaClear AQT Series User Manual

Low range turbidimeter
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Thermo Scientific AquaSensors
™
AquaClear
™
Low Range
Turbidimeter
User Guide

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Summary of Contents for Nivetec Thermo Scientific AquaSensors AquaClear AQT Series

  • Page 1 Thermo Scientific AquaSensors ™ AquaClear ™ Low Range Turbidimeter User Guide...
  • Page 2 ROSS and the COIL trade dress are trademarks of Thermo Fisher Scientific Inc. U.S. patent 6,793,787. AQUAfast, Cahn, ionplus, KNIpHE, No Cal, ORION, perpHect, PerpHecT, PerpHecTion, pHISA, pHuture, Pure Water, Sage, Sensing the Future, SensorLink, ROSS, ROSS Ultra, Sure-Flow, Titrator PLUS and TURBO2 are registered trademarks of Thermo Fisher. 1-888-pHAX-ION, A+, All in One, Aplus, AQUAsnap, AssuredAccuracy, AUTO-BAR, AUTO-CAL, AUTO DISPENSER, Auto-ID, AUTO-LOG, AUTO-READ, AUTO-STIR, Auto-Test, BOD AutoEZ, Cable-Free, CERTI-CAL, CISA, DataCOLLECT, DataPLUS, digital LogR, DirectCal, DuraProbe, Environmental Product Authority, Extra Easy/Extra Value, FAST QC, GAP, GLPcal, GLPcheck, GLPdoc, ISEasy, KAP, LabConnect, LogR, Low Maintenance Triode, Minimum Stir...
  • Page 3 Preface This instruction manual serves to explain the use of the Thermo Scientific AquaSensors AquaClear Turbidity System and is written to cover as many applications as possible. Please do not hesitate to contact Thermo Fisher Scientific or an authorized representative with questions or concerns. The information presented in this instruction manual is subject to change without notice as improvements are made, and does not represent any commitment whatsoever on the part of Thermo Fisher Scientific.
  • Page 4 Safety Information The AquaClear Turbidity System shall be installed and operated only in the manner specified. Only a skilled, trained or authorized person should carry out installation, setup and operation of the sensor system. Before using the system, make sure that is connected as specified. Failure to do so may result in permanent damage to the system of its components.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION.......................... 4 1.1......................... 4 ENERAL NFORMATION 1.2..........................5 NTENDED USE PRODUCT DESCRIPTION ......................6 MOUNTING, WIRING AND PLUMBING .................. 7 3.1............................ 7 OUNTING 3.2............................. 8 LUMBING 3.3. 24 VDC P ......................9 IRING AND OWER 3.4.

  • Page 6: Introduction

    1. INTRODUCTION 1.1. General Information Thank you for purchasing the AquaClear Drinking Water Turbidimeter. The product is designed for continuous use in industrial process applications and complies with safety regulations currently in force. Improper use could lead to hazards for the user or a third-party, and/or adverse effects to the plant or other equipment.

  • Page 7: Intended Use

    1.2. Intended use The AquaClear Turbidity System is used for continuous monitoring of low-range turbidity in drinking water applications. The system also measures water temperature. Data is reported through a local display and a scalable 4-20 milliamp current output. Options include a second current output, up to 2 configurable relays and one of several digital protocols for remote monitoring, calibration, configuration and diagnostics.

  • Page 8: Product Description

    2. PRODUCT DESCRIPTION The AquaClear Turbidity System is used for continuous monitoring of low-range turbidity in drinking water applications. The system also measures water temperature. In the standard system configuration, data is reported through a local display and a scalable 4-20 milliamp current output.

  • Page 9: Mounting, Wiring And Plumbing

    3. Mounting, Wiring and Plumbing 3.1. Mounting Figure 2.1: Wall mounting clearances The Drinking Water Turbidity System is mounted on a 12 inch x 12 inch panel with four inch mounting holes. Use inch bolts with washers to mount the panel to a wall. Make sure the sample chamber is level and plumb to insure proper water levels are maintained in the sample chamber.

  • Page 10: Plumbing

    Mounting tools and equipment: inch Drill with drill bit for appropriate wall anchor. Four diameter bolts – 1.5 inches long. Four inch ID flat washers Wrench to turn bolts Level to insure the system is level when mounted General Mounting Instructions: 1.

  • Page 11: Vdc Power

    3.3. Wiring and 24 VDC Power Access to all User wiring is through the DIN junction box in the lower left on the mounting panel. The standard Turbidity system requires 24 volt DC power and typically draws 270 mA (6.5 watts). Most of the current is drawn by the tungsten bulb and the AV38 backlight.
  • Page 12 USER WIRING FOR: 1 Current Loop without Host Communications Terminal Wiring 24VDC from Power Supply Ground from Power Supply Earth Ground from Power Supply Current Loop - Current Loop + Note: Current Loop Requires 24 VDC supply. Options for second current loop and relays are available. USER WIRING FOR: Digital Communications to Host Computer with 2 Outputs and Relay Terminal Wiring...

  • Page 13: Sample Chamber Details

    3.4. Sample Chamber Details The Drinking Water Turbidity sample chamber is designed for easy access and maintenance. The chamber lid is lifted to gain access to the sample chamber. Set it on top of the AV38 during chamber maintenance. When replacing the lid, it should be aligned using the exterior alignment markers on the front edge of the chamber and the lid.

  • Page 14: Measure Screen Overview

    Lamp Assembly Lamp with cable The lamp assembly screws into the lid. The cable is routed to the user terminal box. Chamber Lid 4. MEASURE SCREEN OVERVIEW The AV38 user interface is shown in Figure 3.1. It consists of an LCD module that contains two lines of 16 alphanumeric characters and seven keys to navigate the menu.

  • Page 15: Menu Structure

    When the DataStick or communications adapter are not connected to the AV38 display, the measure screen indicates the fault as shown in Figure 3.2. DataStick Absent MENU ENTER Figure 3.2: The measure screen when the DataStick is absent. Refer to the AV38 Manual for detailed information on User Interface operation. 5.
  • Page 16 The main menu is navigated using the up/down arrows to display a desired function. The ( ) symbol is used to indicate main menu choices. To select a menu choice, press the ENTER key when the desired choice is displayed. To return to the measure screen, press the ESC key.
  • Page 17 Main Menu Calibrate MENU ENTER Pressing the down arrow from Calibration will display Configure. To select Configure functions, press ENTER To continue scrolling the list, press the down arrow. Press ESC to return to the measure screen. Main Menu Configure MENU ENTER Pressing the down arrow from Configure will display DataStick Comms.
  • Page 18 Main Menu Help MENU ENTER Pressing the down arrow from Help will display Reset AV38. To select Reset functions, press ENTER To continue scrolling the list, press the down arrow. Press ESC to return to the measure screen. Main Menu Reset AV38 MENU ENTER...

  • Page 19: Calibration

    6. Calibration 6.1. Span Calibration To calibrate the span for the Drinking Water Turbidity System: 1. Drain the sample chamber. 2. Shut off flow to the sample chamber. 3. Remove the chamber lid and place it on top of the AV38. Drain Chamber, Shut off Inlet 4.
  • Page 20 The complete calibrate menu for the turbidity and suspended solids is shown. Calibrate 1-Point Sample Zero Temperature Exit MENU ENTER From the measure screen, press MENU. 40.16 NTU 13.1 °C MENU ENTER From the Main Menu, use the up/down arrows to select Calibrate. Then press ENTER. Main Menu Calibrate MENU...
  • Page 21 The current sensor value is dynamically displayed and asks the user to be sure the measurement is ready for calibration before proceeding. When ready, press the ENTER key. 41.32 NTU Sensor ready? MENU ENTER The calibration value can be adjusted with the arrow keys. Use the up/down arrows for fine adjust and the left/right arrows for course adjust.

  • Page 22: Zero Calibration

    After Calibration: 1. Drain the sample chamber. 2. Pour clean water into the chamber and wipe interior surfaces with a clean rag. 3. Rinse with clean water. Drain Chamber, Shut off Inlet 4. Close the Drain valve. 5. Open the Inlet Valve to allow process water to fill the sample chamber.
  • Page 23 From the Calibrate menu, use the UP/DOWN arrows to display ZERO calibration. Press ENTER to select. Calibrate Zero 1-Point Sample Temperature Exit MENU ENTER Be sure the filtered water has had an opportunity to flow for a few minutes to clean out any particles that may have been in the plumbing.

  • Page 24: Temperature Calibration

    After pressing ENTER to confirm Calibration is okay, the Measure screen will be displayed. 0.015 NTU 13.1 °C DS1: MENU ENTER If an error occurs during calibration, the reason for the failure is shown. Zero Cal Fail MENU ENTER Press ENTER to acknowledge the calibration failure and return to the measure screen. 0.045 NTU 13.1 °C DS1:...
  • Page 25 When the temperature calibration procedure is started, the analog output is placed into hold mode. The user is prompted to prepare the sensor. The sensor value is dynamically updated during this step. 25.3 °C Sensor ready? MENU ENTER When the sensor is ready, the ENTER key is pressed and the user is presented with a calibration value for editing.
  • Page 26 Temperature Confirm cal OK MENU ENTER When the enter key is pressed, the analog output is placed into active mode and the monitoring of sensor and temperature values is resumed. This successfully completes the temperature calibration procedure. 0.043 NTU 25.0 °C DS1: MENU ENTER...

  • Page 27: Configuration

    7. Configuration The complete configure menu for turbidity is shown. Configure Sensor Filter Temp Filter Temp Units Exit MENU ENTER From the measure screen, press MENU. 0.038 NTU 14.3 °C MENU ENTER From the Main Menu, use the up/down arrows to select Configure. Then press ENTER. Main Menu Configure MENU...
  • Page 28 Edit the sensor filter with the up/down arrows. Press ENTER to select a new filter value. Press ESC to abort the new sensor value. The temperature filter edit screen works the same way. Sensor Filter? 1) seconds MENU ENTER The Temperature units selection offers °C and °F in the edit screen. ™...

  • Page 29: Datastick Comms Menu

    DataStick Comms Menu It is recommended that the data in this menu not be changed unless the user clearly understands how to connect multiple DataSticks into a single AV38. Up to 247 DataSticks can be connected to a single AV38. Any two of them can be selected for local display, current loop reporting and relay control.

  • Page 30: Setting Data Type

    Edit the Station number in parentheses using the up and down arrows. Select a new number with the ENTER key. To be sure that a new number is NOT selected, press the ESC key to leave the station number unchanged. The station number selected must match the number programmed into the Modbus Comms Adapter of the DataStick wired to the AV38.

  • Page 31: Setting Datastick Baud Rate

    8.3. Setting DataStick Baud Rate All DataSticks connected to the AV38 must be set up with the same Baud rate. To view or edit the current AV38 Baud rate setting, press ENTER on the SET BAUD screen as shown. The default setting is 19.2 kbps. DataStick Comms Set Baud MENU...

  • Page 32: Analog Output(S)

    Analog Output(s) The analog output menu is used to setup the 4milliamp to 20 milliamp analog output in the AV38. This function allows the following assignments: • Parameter: Assign either turbidity or temperature to the output. • 4mA Value: Assign the lowest value of turbidity or temperature to be reported. •...
  • Page 33 To view or reassign the parameter driving the output (turbidity or temperature), select “Set Parameter” with the ENTER key. Analog Output Set Parameter MENU ENTER To view or reassign the parameter driving the output (turbidity or temperature) use the up/down arrows to select Sensor or Temperature.
  • Page 34 Analog Output Set 20 mA Value MENU ENTER Use the up/down arrows for fine adjustment of the low sensor or temperature value. Use the left/right arrows for course adjustment. Accept the displayed value with the ENTER key. Exit without changing by using the ESC key.
  • Page 35 Remove all wiring to the analog output terminals and connect a calibrated ammeter to those terminals. Adjust the displayed count value with the up/down arrows until the meter reads exactly 4.000 mA. Accept the displayed value with the ENTER key. Exit without changing by using the ESC key. Cal 4 mA Point? (2467) MENU...

  • Page 36: Relay (Option)

    10. Relay (Option) Relay A and Relay B are optional features on the AV38. Relays are Form C with normally open and normally closed contacts – 120 Volts, 3 Amps. Connections are made with the optional terminal block on the left side of the back panel.

  • Page 37: Help Menu

    11. Help Menu The help menu displays the product name and the firmware version. To view the current software version of the AV38, press ENTER at each screen level as shown in the diagrams below. Main Menu Help MENU ENTER Help About MENU...

  • Page 38: Reset Av38

    12. RESET AV38 To reset all configuration information to default values, select “Reset AV38” from the main menu. Main Menu Reset AV38 MENU ENTER The AV38 will ask the question, “Are you sure?” to notify the user that they are about to make changes to the system.

  • Page 39: Performance Specification

    13. Performance Specification Measurement Range: 0 to 100 NTU (Can range to 200 NTU when necessary). Resolution: 0.001 NTU Accuracy: +/-2% of reading or +/-0.015 NTU whichever is greater. +/-5% of reading above 40 NTU. Operational Environment Water Temperature Range: -5°C to 50°C Air Temperature Range: -20°C to 60°C Maximum Flow Rate: 500 ml/min (7.9 gal/hr) Minimum Flow Rate: 250 ml/min (4 gal/hr)
  • Page 40 Units of Measure Measurement Units: NTU Temperature Units: °C, °F Calibration Sample (Span): 1 point Zero: 1 point Temperature: 1 point Interface Display: 2 lines, 16 characters, 7 key menu navigation Current Loops: 1 loop standard. Second loop optional Relays: 1 or 2 optional Form C. Interface Sensor Filter: 0 to 100 Seconds Temperature Filter: 0 to 100 Seconds...

  • Page 41: Turbidity System Order Matrix And Accessories

    14. Turbidity System Order Matrix and Accessories AquaClear™ Low Range Turbidity Measurement System – With Local Display Model Number Drinking water turbidity measurement system. 0 to 200 NTU Range. Precalibrated sensor, temperature measurement, sample chamber with bubble trap, lamp, junction box, mounting plate and local display. Display Configuration Integral Remote with 20 foot extension cable...
  • Page 42 ™ ™ Thermo Scientific AquaSensors AquaClear Low Range Turbidimeter User Guide...

  • Page 43: Limited Warranty

    15. Limited Warranty AV38 WARRANTY/REPLACEMENT PLAN Thermo Fisher Scientific warrants its products against material and workmanship defect for a period of one year from the date of shipment. Thermo Fisher Scientific warrants the turbidity lamp to illuminate for a period of 2 years. In the event that a defect is discovered during the warranty period, Thermo Fisher Scientific agrees, at its option, to repair or replace the defective product.

  • Page 44: Terms And Conditions

    16. Terms and Conditions Terms and Conditions of Sale The following terms and conditions will be presumed acceptable unless changes are made in writing and accepted by both parties in a reasonable amount of time. Any standard or boilerplate terms and conditions supplied with a written purchase order will not be applicable unless accepted in writing by both parties.
  • Page 46 258483-001 Rev. A 01-09...

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