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ATI Technologies Q46C2 O & M Manual

2-electrode conductivity/resistivity monitor
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2-Electrode Conductivity/Resistivity
Home Office
Analytical Technology, Inc.
6 Iron Bridge Drive
Collegeville, PA 19426
Phone: 800-959-0299
610-917-0991
Fax:
610-917-0992
Email: sales@analyticaltechnology.com
O & M Manual
Model Q46C2
Monitor
European Office
ATI (UK) Limited
Unit 1 & 2 Gatehead Business Park
Delph New Road, Delph
Saddleworth OL3 5DE
Phone: +44 (0)1457-873-318
Fax:
+ 44 (0)1457-874-468
Email: sales@atiuk.com

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  • Page 1 O & M Manual Model Q46C2 2-Electrode Conductivity/Resistivity Monitor Home Office European Office Analytical Technology, Inc. ATI (UK) Limited 6 Iron Bridge Drive Unit 1 & 2 Gatehead Business Park Collegeville, PA 19426 Delph New Road, Delph Phone: 800-959-0299 Saddleworth OL3 5DE...

  • Page 2: Table Of Contents

    General ..........4 8.12 Cell Constant Calibration Explained .. Features ..........5 ............42 Q46C2 System Specifications ..... 6 8.13 Zero Calibration Explained .... 42 Q46C2 Performance Specs....7 Performing a 1-Point Calibration ..43 PART 2 – ANALYZER MOUNTING ....9 Performing a Cell Constant Calibration .

  • Page 3: Table Of Figures

    Table of Figures 1 - E , AC P ................9 IGURE NCLOSURE IMENSIONS OWERED NITS 2 - W ....................10 IGURE ALL OR OUNT RACKET 3 - W ...................... 11 IGURE OUNTING IMENSIONS 4 - P ......................11 IGURE OUNTING IAGRAM 5 - P...

  • Page 4: Part 1 - Introduction

    3 SPDT relays. One analog output may be configured for PID control and one of the relays may be configured to provide a remote trouble indication. In all configurations, the Q46C2 displays conductivity, sensor temperature, TDS, and output loop current on the secondary line of the custom display. The instrument is used with the Q25C2 sensors or other compatible 2-electrode sensors.

  • Page 5: Features

    Q46C2 2Electode Conductivity System Part 1 - Introduction Features  Power options for either AC or low voltage DC operation.  Two analog outputs on the relay version may be configured to track conductivity and temperature. Both analog outputs can be individually programmed to fail to specific values.

  • Page 6: Q46C2 System Specifications

    Q46C2 2Electode Conductivity System Part 1 - Introduction Q46C2 System Specifications Main Parameter Ranges Automatic or manual selection of the following: 0.00 to 20.00 M / with 0.05K cell constant 0.0 to 200.0 k / with 0.05K cell constant 0.000 to 2.000 μS/ with 0.05K cell constant 0.00 to 20.00 μS/ with 0.05K or 0.5K cell constant...

  • Page 7: Q46C2 Performance Specs

    Q46C2 2Electode Conductivity System Part 1 - Introduction Output Isolation 600 V galvanic isolation Filter Adjustable 0-9.9 minutes additional damping to 90% step input Temperature Input Selectable Pt1000 or Pt100 RTD Main input, 0.0 μS to 2000 μS, 0-20.00 M, 0-200.0K...
  • Page 8 Model Q25C2 - 4 wire input or equal Accuracy Note The Q46C2 is designed to allow measurements over a broad conductivity range using sensors with either 0.05K or 0.5K cell constants. However, extending the measurements made with various cell constants can result in some non-linearity at the high end of operating ranges. This can reduce accuracy from 0.1% to 1-2% in some cases.

  • Page 9: Part 2 - Analyzer Mounting

    Part 2 – Analyzer Mounting General All Q46 Series instruments offer maximum mounting flexibility. A bracket is included with each unit that allows mounting to walls or pipes. In all cases, choose a location that is readily accessible for calibrations. Also consider that it may be necessary to utilize a location where solutions can be used during the calibration process.

  • Page 10: Wall Or Pipe Mount

    Part 2 – Analyzer Mounting Q46C2 2Electode Conductivity System Wall or Pipe Mount A PVC mounting bracket with attachment screws is supplied with each transmitter (see Figure 2 for dimensions). The multi-purpose bracket is attached to the rear of the enclosure using the four flat head screws.

  • Page 11: Figure 3 - Wall Mounting Dimensions

    Part 2 – Analyzer Mounting Q46C2 2Electode Conductivity System Note: Analyzer shown with optional Profibus Connector mounted to side of enclosure. Figure 3 - Wall Mounting Dimensions Figure 4 - Pipe Mounting Diagram O&M Manual Rev-H (6/19)

  • Page 12: Panel Mount

    Part 2 – Analyzer Mounting Q46C2 2Electode Conductivity System Panel Mount Panel mounting of an AC powered monitor uses the panel mounting flange molded into the rear section of the enclosure. Figure 5 provides dimensions for the panel cutout required for mounting.

  • Page 13: Part 3 - Sensor Mechanicals

    Part 3 – Sensor Mechanicals General The Q25C2 Conductivity Sensors are designed for industrial and municipal process applications. Mounting options include flow-through, submersion, or sanitary mount depending on the type of sensor purchased. The sensor-to-analyzer distance must not exceed 60 feet (18.2 meters). Calibrate the sensor before placing it into the process.

  • Page 14: Figure 7 - Sanitary Style Probe Dimensions

    Part 3 – Sensor Mechanicals Q46C2 2Electode Conductivity System Figure 7 - Sanitary Style Probe Dimensions O&M Manual Rev-H (6/19)

  • Page 15: Part 4 - Electrical Installation

    Part 4 – Electrical Installation General The Q46 is powered in one of two ways, depending on the version purchased. The 12-24 VDC powered analyzer requires a customer supplied DC power supply. The 90-260 VAC version requires line power. Please verify the type of unit before connecting any power. WARNING: Do not connect AC line power to the DC version.
  • Page 16 Part 4 – Electrical Installation Q46C2 2Electode Conductivity System WARNING Disconnect line power voltage BEFORE connecting line power wires to Terminal TB7 of the power supply. The power supply accepts only standard three-wire single phase power. AC power supplies are configured for 90-260 VAC operation at the factory at time of order, and the power supply is labeled as such.

  • Page 17: Relay Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System Relay Connection Three SPDT relays are provided on the power supply board. None of the relay contacts are powered. The user must supply the proper power to the contacts. For applications that require the same switched operating voltage as the Q46 (115 or 230 V), power may be jumpered from the power input terminals at TB7.

  • Page 18: Optional Output Or Relay Connections

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System Optional Output or Relay Connections TB2, is used to connect to the optional 3-relay card (Figure 10) OR the optional third analog output, Out#3, (Figure 11). The Q46 can be configured for only one of these optional features, and the hardware for either option must be factory installed.

  • Page 19: Sensor Wiring

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System Sensor Wiring The sensor cable can be quickly connected to the Q46 terminal strip by matching the wire colors on the cable to the color designations on the label in the monitor. A junction box is also available to provide a break point for long sensor cable runs.

  • Page 20: Direct Sensor Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System Direct Sensor Connection Sensor connections are made in accordance with Figure 14. The sensor cable can be routed into the enclosure through one of cord-grips supplied with the unit. Routing sensor wiring through conduit is only recommended if a junction box is to be used.

  • Page 21: Junction Box Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System Junction Box Connection For installations where the sensor is to be located more than 30 feet from the monitor (max. 60 feet), a junction box must be used. The junction box is shown in Figure 14, and is supplied with a (2) Pg 9 cord grips for sensor and interconnect wiring.

  • Page 22: In-Line Sensor Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System In-Line Sensor Connection Figure 15 - In-Line Sensor Connection O&M Manual Rev-H (6/19)

  • Page 23: Oem Sensor Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System OEM Sensor Connection Figure 16 - OEM Sensor Connections O&M Manual Rev-H (6/19)

  • Page 24: Sanitary Sensor Connection

    Part 4 – Electrical Installation Q46C2 2Electode Conductivity System 4.10 Sanitary Sensor Connection Figure 17 - Sanitary Sensor Wiring O&M Manual Rev-H (6/19)

  • Page 25: Part 5 - Configuration

    Part 5 – Configuration User Interface The user interface for the Q46 Series instrument consists of a custom display and a membrane keypad. All functions are accessed from this user interface (no internal jumpers, pots, etc.). RELAY 4-DIGIT INDICATOR MAIN DISPLAY MENU ICONS MENU ICONS SIGN...

  • Page 26: Keys

    Part 5 – Configuration Q46C2 2Electode Conductivity System 5.11 Keys All user configurations occur through the use of four membrane keys. These keys are used as follows: MENU/ESC To scroll through the menu section headers or to escape from anywhere in software.

  • Page 27: Software

    MEASURE display line. Software The software of the Q46C2 is organized in an easy to follow menu-based system. All user settings are organized under five menu sections: Measure, Calibration [CAL], Configuration [CONFIG], Control [CONTROL] and Diagnostics [DIAG].

  • Page 28: Software Navigation

    Part 5 – Configuration Q46C2 2Electode Conductivity System 5.21 Software Navigation Within the CAL, CONFIG, CONTROL, and DIAG menu sections is a list of selectable items. Once a menu section (such as CONFIG) has been selected with the MENU key, the user can access the item list in this section by pressing either the ENTER key or the UP arrow key.

  • Page 29: Figure 19 - Software Map

    Part 5 – Configuration Q46C2 2Electode Conductivity System MENU Start ME NU ME NU ME NU ME NU ME NU C A L C ON FIG CONTROL D IA G SECTIONS E SC E SC E SC MEA SU R E...

  • Page 30: Measure Menu [Measure]

    Part 5 – Configuration Q46C2 2Electode Conductivity System 5.22 Measure Menu [MEASURE] The default menu for the system is the display-only menu MEASURE. This menu is a display-only measurement menu, and has no changeable list items. When left alone, the instrument will automatically return to this menu after approximately 30 minutes.

  • Page 31: Configuration Menu [Config]

    The code is preset at a fixed value. Press ENTER to initiate user entry mode and the first digit will flash. Use arrow keys to modify value. See end of manual for the Q46C2 lock/unlock code. Press ENTER to toggle lock setting once code is correct.
  • Page 32 Part 5 – Configuration Q46C2 2Electode Conductivity System Contrast This function sets the contrast level for the display. The custom display is designed with a wide temperature range, Super-Twist Nematic (STN) fluid. The STN display provides the highest possible contrast and widest viewing angle under all conditions.
  • Page 33 Part 5 – Configuration Q46C2 2Electode Conductivity System Lin T-Comp This function sets the correction slope value for the linear temperature compensation method and is used when the “Temp Mode” is set to Lin. Linear compensation is the method recommended for most aqueous solutions, and the value is typically 2.00 %/°C (25°C reference...
  • Page 34 Part 5 – Configuration Q46C2 2Electode Conductivity System Relay A Mode Relay A can be used in three different ways: as a setpoint control, as a fail alarm, or as a HI-LO alarm band. The three settings for Rly A Mode are CON, FAIL and AL.

  • Page 35: Part 6 - Control

    Part 6 - Control The Control Menu contains all of the output control user settings: Set PID 0% If the PID is enabled, this function sets the minimum and maximum Set PID 100% controller end points. Unlike the standard 4-20 mA output, the controller does not “scale”...
  • Page 36 Part 6 – Control Q46C2 2Electode Conductivity System The value stored for the 4 mA point may be higher or lower than the value stored for the 20 mA point. The entry values are limited to values separated by at least 1% of the range. Use the LEFT arrow key to select the first digit to be modified.

  • Page 37: Figure 20 - Control Relay Example

    Part 6 – Control Q46C2 2Electode Conductivity System *A Phasing This function establishes the direction of the relay trip. When phase is HI, the relay operates in a direct mode. Therefore, the relay energizes and the LCD indicator illuminates when the conductivity value exceeds the setpoint.

  • Page 38: Figure 21 - Alarm Relay Example

    Part 6 – Control Q46C2 2Electode Conductivity System When value rises to ≥ 1.000 µS, relay closes, until When value falls to ≤ 1.000 µS, relay closes, until value falls back to ≤ 0.950 µS. value rises back to ≥ 1.050 µS.

  • Page 39: Part - 7 Diagnostics Menu [Diag]

    Part - 7 Diagnostics Menu [DIAG] The diagnostics menu contains all of the user settings that are specific to the system diagnostic functions, as well as functions that aid in troubleshooting application problems. Set Hold The Set Hold function locks the current loop output values on the present process value, and halts operation of the PID controller.

  • Page 40: Rev-H (6/19

    Part 7 – Diagnostics Q46C2 2Electode Conductivity System actually receiving the signal from the sensor. This allows the user to check the function of attached monitoring equipment during set-up or troubleshooting. Escaping this screen returns the unit to normal operation.

  • Page 41: Rev-H (6/19

    Part 7 – Diagnostics Q46C2 2Electode Conductivity System *Fail Out #3 OPTIONAL. This function sets the fail-mode of current loop output #3 under a FAIL condition. The settings and operation are identical to Fail Out for output #1. *Fail Val #3 OPTIONAL.

  • Page 42: Part 8 - Calibration

    Part 8 – Calibration Overview and Methods Calibration of the Q46C2 is required to accurately match the sensor characteristics to the monitor/analyzer. Since the output of the conductivity sensor does not degrade over time, it is typically only required that the sensor be calibrated at initial installation and then cleaned periodically, to maintain proper system accuracy.

  • Page 43: Performing A 1-Point Calibration

    Part 8 – Calibration Q46C2 2Electode Conductivity System Performing a 1-Point Calibration This calibration method is intended to be used as an on-line calibration method or a wet-cal with reference solutions. During calibration, the system will display the current conductivity reading, and the user can manually enter a reference value from a reference solution bottle or a comparative reference instrument.

  • Page 44: Performing A Cell Constant Calibration

    By entering the factory cell value labeled on the sensor cable, the Q46C2 adjusts the factory calibration to match the characteristics of the specific sensor being used.

  • Page 45: Performing A Sensor Zero Calibration

    Part 8 – Calibration Q46C2 2Electode Conductivity System Performing a Sensor Zero Calibration The sensor offset must be set for the system only on initial sensor installation, or when the cable length has been altered. To begin the sensor zero cal, verify that the sensor is connected and VERY clean and dry. It should be held in the air with the electrodes at least 1 foot away from any nearby objects.

  • Page 46: Tc Factor Calibration

    Part 8 – Calibration Q46C2 2Electode Conductivity System 6. Once completed, the display will indicate PASS or FAIL. If the unit fails, the temperature adjustment may be out of range, the sensor may not have achieved complete temperature equilibrium, or there may be a problem with the temperature element. In the event of calibration failure, it is recommended to attempt the calibration again immediately.

  • Page 47: Part 9 - Pid Controller Details

    Part 9 – PID Controller Details PID Description PID control, like many other control schemes, are used in chemical control to improve the efficiency of chemical addition or control. By properly tuning the control loop that controls chemical addition, only the amount of chemical that is truly required is added to the system, saving money. The savings can be substantial when compared to a system which may be simply adding chemical at a constant rate to maintain some minimal addition under even the worst case conditions.
  • Page 48 Part 9 – PID Controller Details Q46C2 2Electode Conductivity System The most notable feature of the algorithm is the fact the proportional gain term affects all components directly (unlike some other algorithms - like the “series” form.) If a pre-existing controller utilizes the same form of the algorithm shown above, it is likely similar settings can for made if the units on the settings are exactly the same.

  • Page 49: Classical Pid Tuning

    Part 9 – PID Controller Details Q46C2 2Electode Conductivity System If it appears that even large amounts of integral gain (>20) don’t appreciably increase the desired response, drop I back to about 1.0, and increase P by 1.00, and start increasing I again. In most chemical control schemes, I will be approximately 3 times the value of P.
  • Page 50 Part 9 – PID Controller Details Q46C2 2Electode Conductivity System The easiest processes to control with closed-loop schemes are generally linear, and symmetrical, in nature. For example, controlling level in tank where the opening of valve for a fixed period of time corresponds linearly to the amount that flows into a tank.

  • Page 51: Part 10 - System Maintenance

    Part 10 – System Maintenance WARNING: EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2. 10.1 System Checks If the FAIL icon is flashing on the display, check the Fault List to determine the cause of the failure.
  • Page 52 Part 10 – System Maintenance Q46C2 2Electode Conductivity System 10.3 Display Messages The Q46 Series instruments provide a number of diagnostic messages that indicate problems during normal operation and calibration. These messages appear as prompts on the secondary line of the display or as items on the Fault List (see Part 7).
  • Page 53 Part 10 – System Maintenance Q46C2 2Electode Conductivity System The following messages will appear as items on the Fault List: MESSAGE DESCRIPTION POSSIBLE CORRECTION Sensor High The raw signal from the sensor is too Check wiring connections to sensor. high.

  • Page 54: Cleaning The Sensor

    Part 10 – System Maintenance Q46C2 2Electode Conductivity System 10.4 Cleaning the Sensor Keep the sensor as clean as possible for optimum measurement accuracy. Frequency of cleaning depends upon the process solution. Note that residue from calibration or cleaning solutions, and even skin contact, can leave trace elements on the sensor that may affect the conductivity measurement.

  • Page 55: Figure 24 - Pt1000 Resistance Table

    Part 10 – System Maintenance Q46C2 2Electode Conductivity System RTD Ω ºC 1078 1097 1117 1136 Figure 24 - Pt1000 Resistance Table O&M Manual Rev-H (6/19)

  • Page 56: Spare Parts

    Q46C2 Front Lid Assembly 07-0326 Q46C2 Monitor, 100-240 VAC 07-0327 Q46C2 Monitor, 12-24 VDC 07-0328 Q46C2 Monitor, 100-240 VAC with Profibus 07-0329 Q46C2 Monitor, 12-24 VDC with Profibus 03-0407 Q46 P/S Assy, 100-240VAC 03-0408 Q46 P/S Assy, 100-240VAC with 3...
  • Page 57 PRODUCT WARRANTY Analytical Technology, Inc. (Manufacturer) warrants to the Customer that if any part(s) of the Manufacturer's equipment proves to be defective in materials or workmanship within the earlier of 18 months of the date of shipment or 12 months of the date of start-up, such defective parts will be repaired or replaced free of charge.
  • Page 58 WATER QUALITY MONITORS GAS DETECTION PRODUCTS Dissolved Oxygen Ammonia Carbon Monoxide Free Chlorine Hydrogen Combined Chlorine Nitric Oxide Total Chlorine Oxygen Residual Chlorine Dioxide Cl2 Phosgene Potassium Permanganate Bromine Chlorine Dissolved Ozone Chlorine Dioxide pH/ORP Fluorine Conductivity Iodine Hydrogen Peroxide Acid Gases Peracetic Acid O Ethylene Oxide...

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