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Analytical Technology Q45C2 Manual

Two-electrode conductivity monitor / analyzer
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Two-Electrode Conductivity
Home Office
Analytical Technology, Inc.
6 Iron Bridge Drive
Collegeville, PA 19426
Ph: 800-959-0299
610-917-0991
Fax: 610-917-0992
Email: sales@analyticaltechnology.com
Model Q45C2
Monitor/Analyzer
European Office
ATI (UK) Limited
Unit 1 & 2 Gatehead Business Park
Delph New Road, Delph
Saddleworth OL3 5DE
Ph: +44 (0)1457-873-318
Fax: + 44 (0)1457-874-468
Email:sales@atiuk.com

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  • Page 1 Model Q45C2 Two-Electrode Conductivity Monitor/Analyzer 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 Saddleworth OL3 5DE Ph: 800-959-0299 Ph: +44 (0)1457-873-318...
  • Page 2 PRODUCT WARRANTY Analytical Technology, Inc. (Manufacturer) warrants to the Customer that if any part(s) of the Manufacturer's products 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 3: Table Of Contents

    7.13 Zero Calibration Explained ......51 Features ............. 5 Performing a 1-Point Calibration .....51 Q45C2 System Specifications ....6 Performing a Cell Constant Calibration ...53 Q45C2 Performance Specifications ..8 Performing a Sensor Zero Calibration ..53 PART 2 – ANALYZER MOUNTING ....10 Temperature Calibration ......54...

  • Page 4: Table Of Figures

    Table of Figures 1 - E , AC P ............11 IGURE NCLOSURE IMENSIONS OWERED NITS 2 - E , 2-W & B ..........12 IGURE NCLOSURE IMENSIONS ATTERY NITS 3 - W ................13 IGURE ALL OR OUNT RACKET 4 - W ..................

  • Page 5: Part 1 - Introduction

    Features · Standard Q45C2 electronic transmitters are designed to be a fully isolated, loop powered instruments for 2-wire DC applications. Optional integral power supply card for 115/230 VAC operation, 12-24 vdc, and optional battery power supply card for portable datalogging applications are available.

  • Page 6: Q45C2 System Specifications

    Q45C2 2Electode Conductivity System Part 1 - Introduction · 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. · Selectable Output Fail Alarm feature allows system diagnostic failures to be sent to external monitoring systems.
  • Page 7 Q45C2 2Electode Conductivity System Part 1 - Introduction Keypad 4-key membrane type with tactile feedback, polycarbonate with UV coating, integral EMI/static shield and conductively coated window Ambient Temperature Service, -20 to 60 °C (-4 to 140 ºF) Storage, -30 to 70 °C (-22 to 158 ºF)

  • Page 8: Q45C2 Performance Specifications

    Q45C2 2Electode Conductivity System Part 1 - Introduction Mounting Options Wall or pipe mount bracket standard. Bracket suitable for either 1.5” or 2” I.D. U-Bolts for pipe mounting. Conduit Openings Two PG-9 openings with gland seals DC Cable Type Belden twisted-pair, shielded, 22 gauge or larger...
  • Page 9 Model Q25C2 - 4 wire input or equal Accuracy Note The Q45C2 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.

  • Page 10: Part 2 - Analyzer Mounting

    Part 2 – Analyzer Mounting General All Q45 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 11: Figure 1 - Enclosure Dimensions, Ac Powered Units

    Q45C2 2Electode Conductivity System Part 2 – Analyzer Mounting MENU ENTER Figure 1 - Enclosure Dimensions, AC Powered Units O&M Manual Rev-R (7/15)

  • Page 12: Figure 2 - Enclosure Dimensions, 2-Wire & Battery Units

    Q45C2 2Electode Conductivity System Part 2 – Analyzer Mounting 4.38 2.61 (111.2) (66.3) MENU ENTER 4.38 #10-32 UNF 2.61 (111.2) (66.3) (4 PLACES) FRONT VIEW BACK VIEW 1" NPT (20.8) 1.23 1.23 PG-9 PORT (31.2) (31.2) (2 PLACES) 1.68 (42.7) 3.45...

  • Page 13: Wall Or Pipe Mount

    Q45C2 2Electode Conductivity System Part 2 – Analyzer Mounting Wall or Pipe Mount A PVC mounting bracket with attachment screws is supplied with each transmitter (see Figure 3 for dimensions). The multi-purpose bracket is attached to the rear of the enclosure using the four flat head screws. The instrument is then attached to the wall using the four outer mounting holes in the bracket.

  • Page 14: Figure 4 - Wall Mounting Diagram

    Q45C2 2Electode Conductivity System Part 2 – Analyzer Mounting MENU ENTER Figure 4 - Wall Mounting Diagram MENU ENTER Figure 5 - Pipe Mounting Diagram O&M Manual Rev-R (7/15)

  • Page 15: Panel Mount, Ac Powered Monitor

    Q45C2 2Electode Conductivity System Part 2 – Analyzer Mounting Panel Mount, AC Powered Monitor Panel mounting of an AC powered monitor uses the panel mounting flange molded into the rear section of the enclosure. Figure 6 provides dimensions for the panel cutout required for mounting.

  • Page 16: Part 3 - Electrical Installation

    Part 3 – Electrical Installation General The Q45 is powered in one of two ways, depending on the version purchased. The 2-wire version is a 16-35 VDC powered transmitter. The integral 115/230 VAC version requires line power. Please verify the type of unit before connecting any power.

  • Page 17: Two-Wire

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Take care to route sensor cable away from AC power lines, adjustable frequency drives, motors, or other noisy electrical signal lines. Do not run signal lines in the same conduit as AC power lines. Run signal cable in dedicated metal conduit if possible.

  • Page 18: Figure 8 - Loop Power Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Figure 8 - Loop Power Connection Notes: 1. Voltage between Terminals 7 and 8 MUST be between 16 and 35 VDC. 2. Earth ground into Terminal 10 is HIGHLY recommended. This connection can greatly improve stability in electrically noisy environments.
  • Page 19 Q45C2 2Electode Conductivity System Part 3 – Electrical Installation O&M Manual Rev-R (7/15)

  • Page 20: 3.21 Load Drive

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation 3.21 Load Drive The amount of resistance that the analog output can drive in the 115/230 VAC version is fixed. However, in the two-wire configuration, the load-drive level is dependent on the DC supply voltage provided to the controller.
  • Page 21 Q45C2 2Electode Conductivity System Part 3 – Electrical Installation AC powered Q45 systems are supplied with 3 cable gland fittings and two ½” conduit adapters. One of the cable glands has a larger hole in the rubber gland and should be used for the power cord entry if a flexible power cord will be used for installation.

  • Page 22: Figure 9 - Line Power Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Figure 9 - Line Power Connection The power strip, TB5, allows up to 12 AWG wire. A wire gauge of 16 AWG is recommended to allow for an easy pass-through into the ½” NPT ports when wiring.

  • Page 23: Sensor Wiring

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Two sets of SPDT relay contacts 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 Q45 (115 or 230 V), power may be jumpered from the power input terminals at TB5.

  • Page 24: Figure 12 - Sensor Cable Preparation

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Cord-grips used for sealing the cable should be snugly tightened after electrical connections have been made to prevent moisture incursion. When stripping cables, leave adequate length for connections in the transmitter enclosure as shown below. The standard 15 ft.

  • Page 25: Junction Box Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Junction Box Connection For installations where the sensor is to be located more than 30 feet from the monitor (max. 100 feet), a junction box must be used. The junction box is shown in Figure 3-6, and is supplied with a (2) Pg 9 cord grips for sensor and interconnect wiring.

  • Page 26: In-Line Sensor Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation In-Line Sensor Connection Figure 14 - In-Line Sensor Connection O&M Manual Rev-R (7/15)

  • Page 27: Oem Sensor Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation OEM Sensor Connection Use this wiring configuration for Fixed Sensor Wiring for Part #’s (00-1568 & 00-1569) Figure 15 - OEM Sensor Connections O&M Manual Rev-R (7/15)

  • Page 28: Sanitary Sensor Connection

    Q45C2 2Electode Conductivity System Part 3 – Electrical Installation Sanitary Sensor Connection Figure 16 - Sanitary Sensor Wiring O&M Manual Rev-R (7/15)

  • Page 29: Part 4 - Configuration

    Part 4 – Configuration User Interface The user interface for the Q45 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 30: 4.11 Keys

    Q45C2 2Electode Conductivity System Part 4 – Configuration 4.11 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. The escape sequence allows the user to back out of any changes in a logical manner.
  • Page 31 Q45C2 2Electode Conductivity System Part 4 – Configuration Lower Line During normal operation, the lower line of the display indicates user-selected secondary measurements that the system is making. This also includes calibration data from the last calibration sequence and the transmitter model number and software version.

  • Page 32: Software

    Software The software of the Q45C2 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 33 Q45C2 2Electode Conductivity System Part 4 – Configuration Any data that may be changed will be flashing. This flashing indicates user entry mode and is initiated by pressing the ENTER key. The UP arrow key will increase a flashing digit from 0 to 9. The LEFT arrow key moves the flashing digit from right to left.

  • Page 34: Figure 18 - Software Map

    Q45C2 2Electode Conductivity System Part 4 – Configuration MENU Start CONFIG CONTROL DIAG SECTIONS MEASURE (display only) Temperature Set 4mA (#1) Set Hold Cal Cond. Entry Lock * PID % Output Set 20mA (#1) Fault List Cal Temp Set Delay...

  • Page 35: Measure Menu [Measure]

    Q45C2 2Electode Conductivity System Part 4 – Configuration 4.22 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 36: Calibration Menu [Cal]

    Q45C2 2Electode Conductivity System Part 4 – Configuration For the relay-based analyzer version, or the portable battery powered version of the transmitter, the screens are basically the same, with additions to show two analog outputs instead of one (#1 and #2.) The MEASURE screens are intended to be used as a very quick means of looking up critical values during operation or troubleshooting.

  • Page 37: Configuration Menu [Config]

    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 Q45C2 lock/unlock code. Press ENTER to toggle lock setting once code is correct.
  • Page 38 Q45C2 2Electode Conductivity System Part 4 – Configuration the primary display area. The user may select between conductivity, sensor temperature, or output current. Using this function, the user may choose to put temperature in the main display area and conductivity on the secondary, lower line of the display.
  • Page 39 Q45C2 2Electode Conductivity System Part 4 – Configuration This selection is critical for control of the internal diagnostics and compensation factors. Press ENTER to initiate user entry mode, and the entire value will flash. Use the UP arrow key to modify the desired value.
  • Page 40 Q45C2 2Electode Conductivity System Part 4 – Configuration value will flash. Use the arrow keys to modify the desired value; range is 00.00 mg/L/μS to 99.99 mg/L/μS. Press ENTER to update and store the new value. This assigns the 4-20 mA output #1 to either mS (by...
  • Page 41 Q45C2 2Electode Conductivity System Part 4 – Configuration Temp Units This function sets the display units for temperature measurement. Press ENTER to initiate user entry mode, and the entire value will flash. Use the UP arrow key to modify the desired display value. The choices are °F and °C.

  • Page 42: Part 5 - Control

    Part 5 - Control Set 4 mA (#1) Set 20 mA (#1) These functions set the main 4 and 20 mA current loop output points for the transmitter. The units displayed depend on the selection made in the CONFIG menu for Iout #1 Mode.
  • Page 43 Q45C2 2Electode Conductivity System Part 5 – Control ALARM CONFIGURATIONS APPLY TO AC POWERED UNITS ONLY *A Setpoint This function establishes the conductivity trip point for relay A. The entry value is limited to a value within the range specified in “Set Range”. Use the LEFT arrow key to select the first digit to be modified.

  • Page 44: Figure 19 - Control Relay Example

    Q45C2 2Electode Conductivity System Part 5 – Control When value rises to ≥ 1.000 µS, relay closes. When value falls to ≤ 1.000 µS, relay opens. When value rises to ≥ 1.000 µS, relay opens. When value falls to ≤ 1.000 µS, relay closes.
  • Page 45 Q45C2 2Electode Conductivity System Part 5 – Control If Relay B Mode is set to CON (see Relay B Mode), then *B Setpoint Relay B will function identically to Relay A. Relay B settings *B Hysteresis appear in the CONFIG menu list automatically.

  • Page 46: Part - 6 Diagnostics Menu [Diag]

    Part - 6 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.
  • Page 47 Q45C2 2Electode Conductivity System Part 6 – Diagnostic Menu Faults are not stored; therefore, they are immediately removed if power is cycled. If the problem causing the faults still exists, however, faults will be displayed again after power is re-applied and a period of time elapses during which the diagnostic system re-detects them.
  • Page 48 Q45C2 2Electode Conductivity System Part 6 – Diagnostic Menu Note: If the HOLD function is engaged before the Sim Output function is engaged, the simulated output will remain the same even when the ESC key is pressed. Disengage the HOLD function to return to normal output.
  • Page 49 Q45C2 2Electode Conductivity System Part 6 – Diagnostic Menu AC OPERATED UNITS ONLY Fail Out #2 This function sets the fail-mode of current loop output #2 under a FAIL condition. The settings and operation are identical to Fail Out for output #1.

  • Page 50: Part 7 - Calibration

    Part 7 – Calibration Overview and Methods Calibration of the Q45C2 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 51: 7.12 Cell Constant Calibration Explained

    Q45C2 2Electode Conductivity System Part 7 – Calibration 7.12 Cell Constant Calibration Explained In a cell constant calibration, the User simply enters the known cell constant of the sensor. This value is labeled on the sensor along with the TC factor value. It is the recommended method of calibration for highest accuracy.
  • Page 52 Q45C2 2Electode Conductivity System Part 7 – Calibration During the 1-point calibration, the User must be careful to calibrate with a solution that falls into the measuring range selected. If the calibration solution is outside the measuring range, an error will result.

  • Page 53: Performing A Cell Constant Calibration

    The surface area of the electrodes, the spacing of the electrodes and the sensor cable all contribute to cell constant of the sensor. By entering the factory cell value labeled on the sensor cable, the Q45C2 adjusts the factory calibration to match the characteristics of the specific sensor being used.

  • Page 54: Temperature Calibration

    Q45C2 2Electode Conductivity System Part 7 – Calibration and establish and store the proper zero points. Temperature Calibration The temperature input is factory calibrated for the highest accuracy. Temperature calibration is not recommended; however, it is provided for applications in which very long cable lengths are needed. For example, at 50 feet, readings may be off ±0.2 °C.

  • Page 55: Tc Factor Calibration

    Q45C2 2Electode Conductivity System Part 7 – Calibration the temperature element. In the event of calibration failure, it is recommended to attempt the calibration again immediately. TC Factor Calibration This function is intended to give the user direct control of the temperature calibration offset value without having to proceed through the temperature calibration procedure.

  • Page 56: Part 8 - Pid Controller Details

    Part 8 – 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.
  • Page 57 Q45C2 2Electode Conductivity System Part 8 – PID Controller Details é ù ò output ê ë ú û Where: output = controller output proportional gain integral gain derivative gain time e(t) = controller error (e=measured variable – setpoint) Figure 22 - Q45H ISA (Ideal) Equation 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”...

  • Page 58: Classical Pid Tuning

    Q45C2 2Electode Conductivity System Part 8 – PID Controller Details Derivative gain. The addition of derivative control can be problematic in many applications, because it greatly contributes to oscillatory behavior. In inherently slow chemical control processes, differential control is generally added in very small amounts to suppress erratic actions in the process that are non-continuous, such as pumps and valves clicking on and off.

  • Page 59: Manual Pid Override Control

    Q45C2 2Electode Conductivity System Part 8 – PID Controller Details Manual PID Override Control The Q45 PID output function allows the user to take manual control of the PID control signal. This is often useful when starting up a control loop, or in the event that you wish to bump the system manually to measure system response time.
  • Page 60 Q45C2 2Electode Conductivity System Part 8 – PID Controller Details 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 61: Part 9 - System Maintenance

    Part 9 – System Maintenance WARNING: EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2. System Checks 1. If the FAIL icon is flashing on the display, check the Fault List to determine the cause of the failure. To access the Fault List, press the MENU/ESC key until the DIAG menu appears.

  • Page 62: Instrument Checks

    Q45C2 2Electode Conductivity System Part 9 – System Maintenance Instrument Checks Remove sensor completely and connect 1100 Ohms from the blue to white sensor input leads. Make sure the unit is configured for a Pt1000 thermal element and that the temperature is not in manual locked mode.
  • Page 63 Q45C2 2Electode Conductivity System Part 9 – System Maintenance TC-F25 lock! The TC selection is in F25 mode, Calibration and TC adjustment cannot be locked at 25 ºC performed while the TC is in F25 mode. To allow access to TC calibrations, change TC mode from F25 (fixed 25) to SENS (sensor).
  • Page 64 Q45C2 2Electode Conductivity System Part 9 – System Maintenance Fault List display messages (continued): MESSAGE DESCRIPTION POSSIBLE CORRECTION Cond Cal Fail Failure of conductivity calibration. Clean sensor, get fresh cal solutions and redo calibration. If still failure, sensor slope may be less than 70% or greater than 130%.

  • Page 65: Spare Parts

    Spare Parts Part No. Description 07-0056 0.05 Cell, Titanium, ½”NPT Compression fitting (1000 RTD) 63-0029 1.00 Cell, 316SS, ½”NPT (100 RTD) 63-0040 1.00 Cell, 316SS, ¾”NPT In-line fitting (100 RTD) 63-0059 0.50 Cell, 316SS, ¾”NPT In-line fitting, high T/P (1000 RTD) 63-0060 0.50 Cell, 316SS, 2”...

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