ATI Technologies Q46H-64 O & M Manual
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ATI Technologies Q46H-64 O & M Manual

Dissolved ozone monitor
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Dissolved Ozone Monitor
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 Q46H-64
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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Summary of Contents for ATI Technologies Q46H-64

  • Page 1 O & M Manual Model Q46H-64 Dissolved Ozone 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

    Table of Contents PART 7 – CALIBRATION ......... 51 PART 1 - INTRODUCTION ........4 1.1 G ..........4 7.1 O ....... 51 ENERAL ZONE ALIBRATION 1.2 S ........5 7.11 O ........51 TANDARD YSTEM ZONE 1.3 F ..........8 7.12 O ........52 EATURES ZONE 1.4 Q46H/64 S...
  • Page 3 ABLE OF IGURES 1 - T ................5 IGURE YPICAL ISSOLVED ZONE ONITORING YSTEM 2 - O ..............6 IGURE ZONE YSTEM W ONVENTIONAL P TYLE ENSOR 3 - S ..............7 IGURE EALED LOWCELL SSEMBLIES WITH ONTROL 4 - Q46 E ......................

  • Page 4: Part 1 - Introduction

    Part 1 - Introduction General The Model Q46H/64 is a versatile on-line monitoring system designed for the continuous measurement of dissolved ozone in solution. The full scale operating range of the system may be selected by the user for 0-200.0 ppb, 0-2.000 ppm, 0-20.00 ppm, or 0-200.0 ppm, and the sensing system will operate on water streams with temperatures ranging from -5 to 55C.

  • Page 5: Standard System

    Part 1 – Introduction Q46H/64 Dissolved Ozone System Standard System The standard model Q46H/64 system includes three main components, the Q46H analyzer, a constant head flow cell, and an ozone sensor. A sealed flowcell is also available for applications where sample flow rate and pressure can be carefully controlled. Figure 1 shows a typical installation.

  • Page 6: Figure 2 - Ozone System W /C

    Part 1 – Introduction Q46H/64 Dissolved Ozone System Figure 2 below shows the same standard flowcell assembly and ozone sensor along with the conventional type pH sensor. A special adapter is required to hold the pH sensor in its proper location in the flowcell inlet chamber Figure 2 - Ozone System w/Conventional pH Style Sensor O&M Manual...

  • Page 7: Figure 3 - Sealed Flowcella

    Part 1 – Introduction Q46H/64 Dissolved Ozone System Figure 3 below shows an installation using a 00-1522 sealed flowcell for the ozone sensor and a 00-1527 sealed flowcell for the pH sensor. This type of installation requires careful flow control. We recommend the use of our 03-0372 flow control assembly when using sealed flowcells.

  • Page 8: Features

    Part 1 – Introduction Q46H/64 Dissolved Ozone System Features  Standard Q46H analyzers have fully isolated inputs and outputs. Analog outputs are additionally completely isolated from each other.  Available in either 90-260VAC or 12-24 VDC power supply systems. All features remain the same in both variations.

  • Page 9: Q46H/64 System

    Part 1 – Introduction Q46H/64 Dissolved Ozone System  High accuracy three-wire Pt100 temperature input. Temperature element can be user calibrated.  Security lock feature to prevent unauthorized tampering with analyzer settings. settings can be viewed while locked, but they cannot be changed. Q46H/64 System Specifications Displayed Parameters Main input, 0.1 ppb (0.0001 ppm) to 200.0 ppm...
  • Page 10 Part 1 – Introduction Q46H/64 Dissolved Ozone System Sensor 2-electrode polarographic membraned sensor for direct measurement of ozone Sensor Materials PVC and stainless steel Sensor Cable 25 ft. (7.5 meter) cable with 6-pin plug Max. Sensor-to-Analyzer 100 feet (30.5 meters), with junction box Distance Optional pH Input Accepts standard combination or Q22P pH Sensors...

  • Page 11: Q46H Performance

    Part 1 – Introduction Q46H/64 Dissolved Ozone System Q46H Performance Specifications Accuracy 0.5% of selected range or 0.02 PPM Repeatability 0.3% of selected range or 0.01 PPM Sensitivity 0.05% of selected range Non-linearity 0.1% of selected range Warm-up Time 3 seconds to rated performance (electronics only) Supply Voltage Effects ±...

  • Page 12: 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 13: Wall Or Pipe Mount

    Part 2 – Analyzer Mounting Q46H/64 Dissolved Ozone System Wall or Pipe Mount A PVC mounting bracket with attachment screws is supplied with each analyzer (see Figure 5 for dimensions). The multi-purpose bracket is attached to the rear of the enclosure using the four flat head screws.

  • Page 14: Figure 6 - Wall Mountingd

    Part 2 – Analyzer Mounting Q46H/64 Dissolved Ozone System Figure 6 – Wall Mounting Diagram Figure 7 – Pipe Mounting Diagram O&M Manual Rev-K (11/18)

  • Page 15: Panel Mounting

    Part 2 – Analyzer Mounting Q46H/64 Dissolved Ozone System Panel Mounting Panel mounting uses the panel mounting flange molded into the rear section of the enclosure. Figure 8 provides dimensions for the panel cutout required for mounting. The panel mounting bracket kit must be ordered separately (part number 05-0094). This kit contains a metal retainer bracket that attaches to the rear of the enclosure, 4 screws for attachment of this bracket, and a sealing gasket to insure that the panel mounted monitor provides a water tight seal when mounted to a panel.

  • Page 16: Part 3 - Sensor/Flowcell Mounting

    Part 3 – Sensor/Flowcell Mounting General Select a location within the maximum sensor cable length for mounting of the sensor flow cell. Constant-Head Flowcell Dissolved Ozone sensors are best used in a constant-head overflow chamber because variations in sample flow rate and pressure can cause unstable readings. When monitoring low concentrations (below 0.5 PPM), this method should always be used.

  • Page 17: Figure 10 - Low Volume Flowcell

    Part 3 – Sensor/Flowcell Mounting Q46H/64 Dissolved Ozone System Once mounted, inlet and drain connections must be made. The flow cell contains a ⅛" MNPT inlet connection and a ⅜" MNPT drain connection. Hose barbs for the inlet and drain connections are supplied with the flow cell for use with flexible tubing.

  • Page 18: Low -Volume Flowcell

    Part 3 – Sensor/Flowcell Mounting Q46H/64 Dissolved Ozone System Great care must be taken in using the low-volume flow cell. Passages are very small, so only very clean water may be put through this type of system. The suggested flow rate is 150-300 cc/min., but the flow rate must be maintained precisely.

  • Page 19: Figure 12 - Sealed P H Flowcell

    Part 3 – Sensor/Flowcell Mounting Q46H/64 Dissolved Ozone System Figure 12 - Sealed pH Flowcell Details O&M Manual Rev-K (11/18)

  • Page 20: Submersion Mounting

    Part 3 – Sensor/Flowcell Mounting Q46H/64 Dissolved Ozone System Submersion Mounting Some applications are much easier done using the submersible sensor. This method can sometimes be used where flow is reasonably constant, and hydraulic head does not vary appreciably. Ozone sensors can never be used in completely stagnant conditions. A flow velocity of at least 0.3 feet per second is normally required for measurement.

  • Page 21: 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 22: Figure 14 - Line Powerc

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone 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 23: Figure 15 - Optional Relayb

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone 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 24: Figure 16 - Optional Relayb

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone System TB2, is used to connect to the optional 3-relay card (Figure 16) OR the optional third analog output, Out#3, (Figure 17). The Q46 can be configured for only one of these optional features, and the hardware for either option must be factory installed.

  • Page 25: Direct Sensorc

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone System Direct Sensor Connection 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. Some loose cable is needed near the installation point so that the sensor can be inserted and removed easily from the flowcell.

  • Page 26: Sensor Wiring

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone 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 27: Junction Boxc

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone System Junction Box Connection Installations where the sensor is to be located more than 25 feet from the monitor (max. 100 feet) require the use of a junction box. The junction box is shown in, and is supplied with two cable glands on the bottom of the enclosure.

  • Page 28: Optional Ph Input

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone System Optional pH Input The Q46H may be configured for pH measurement if desired. To utilize the feature, a pH sensor must be connected to terminals 3 and 5 as shown Figure 19. Note that jumpers are installed at the factory between terminals 3 and 5, and terminals 6 and 9.

  • Page 29: Figure 21 - Junction Boxw

    Part 4 – Electrical Installation Q46H/64 Dissolved Ozone System Note: The BLUE wire is NOT used when connecting a Flow Style Probe to the analyzer Figure 21 - Junction Box Wiring w/Optional pH Sensor O&M Manual Rev-K (11/18)

  • Page 30: Part 5 - Sensor Assembly

    Part 5 – Sensor Assembly Ozone Sensor Preparation The ozone sensor supplied with the Q46H is shipped dry. It will not operate until it is prepared by adding electrolyte and a membrane. Preparation of the sensor for operation must be done carefully.

  • Page 31: Figure 23 - Submersible Ozone

    Part 5 – Sensor Assembly Q46H/64 Dissolved Ozone System Figure 23 – Submersible Ozone Sensor Assembly Submersible ozone sensors are made up of two separate parts, a submersion holder that also contains the temperature compensating element and a sensing module. The sensing module screws into the holder, with an o-ring providing a water tight connection.

  • Page 32: Optional Ph Sensors

    Part 5 – Sensor Assembly Q46H/64 Dissolved Ozone System 7. Shake excess electrolyte from the fill hole on the side of the sensor and replace the vent screw. The sensor is now ready for operation. The membrane should be stretched tightly across the tip of the sensor.

  • Page 33: Part 6 - Configuration

    Part 6 – 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 34: Keys

    Part 6 – Configuration Q46H/64 Dissolved Ozone System 6.11 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 35: Software

    Part 6 – Configuration Q46H/64 Dissolved Ozone System Icon Area The icon area contains display icons that assist the user in set-up and indicate important states of system functions. The CAL, CONFIG, and DIAG icons are used to tell the user what branch of the software tree the user is in while scrolling through the menu items.

  • Page 36: Software Navigation

    Part 6 – Configuration Q46H/64 Dissolved Ozone System 6.21 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 37: Figure 25 - Software Map

    Part 6 – Configuration Q46H/64 Dissolved Ozone System MENU MEASURE CONTROL CONFIG DIAG SECTIONS Temperature Entry Lock Cal O PID 0% #1 Set Hold Fault List Set Delay PID 100% #1 Cal pH PID % Output Sim Out PID Setpoint #1 Cal Temp Contrast Loop Current (#1)

  • Page 38: [Measure]

    Part 6 – Configuration Q46H/64 Dissolved Ozone System 6.22 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 39: [Cal]

    Part 6 – Configuration Q46H/64 Dissolved Ozone System Offset = X.X V pH sensor voltage output at 7 pH. This value updates after calibration is performed and is useful for resolving sensor problems. Note: A display test (all segments ON) can be actuated by pressing and holding the ENTER key while viewing the model/version number on the lower line of the display.
  • Page 40 Part 6 – Configuration Q46H/64 Dissolved Ozone System Set Delay The delay function sets the amount of damping on the instrument. This function allows the user to apply a first order time delay function to the ozone measurements being made. Both the display and the output value are affected by the degree of damping.
  • Page 41 Part 6 – Configuration Q46H/64 Dissolved Ozone System Iout#1 Mode This function sets analog output #1 to either track ozone (default) or enables the PID controller to operate on the ozone input. Press ENTER to initiate user entry mode, and the entire value will flash. Use the UP arrow key to modify the desired value;...
  • Page 42 Part 6 – Configuration Q46H/64 Dissolved Ozone System *Relay D Mode OPTIONAL. Relays D, E, and F can be used in two ways: as a setpoint *Relay E Mode control, or as an alarm. The two settings for Relay B Mode are CON and *Relay F Mode FAIL.

  • Page 43: Figure 26 - Automatic P H B

    Part 6 – Configuration Q46H/64 Dissolved Ozone System Table 1 Table 2 4.00 pH 7.00 pH 10.00 pH 4.00 pH 7.00 pH 9.18 pH ºC °C °C ºC °C °C 4.00 7.10 10.27 4.00 7.10 9.46 3.99 7.06 10.15 3.99 7.06 9.33 4.00...

  • Page 44: [Control]

    Part 6 – Configuration Q46H/64 Dissolved Ozone System 6.25 Control Menu [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.
  • Page 45 Part 6 – Configuration Q46H/64 Dissolved Ozone 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 within the range specified in “Set Range”, and the 4 mA and the 20 mA point must be separated by at least 1% of this range Use the LEFT arrow key to select the first digit to be modified.

  • Page 46: Figure 27 - Control Relaye

    Part 6 – Configuration Q46H/64 Dissolved Ozone System A Delay This function places an additional amount of time delay on the trip point for relay A. This delay is in addition to the main delay setting for the controller. The entry value is limited to a value between 0 and 999 seconds.

  • Page 47: [Diag]

    Part 6 – Configuration Q46H/64 Dissolved Ozone System When value rises to ≥ 1.000 ppm, relay closes, When value falls to < 1.000 ppm, relay closes, until value falls back to < 0.950 ppm. until rises back to > 1.050 ppm. 1.000 ppm 1.050 ppm HYST - HI...
  • Page 48 Part 6 – Configuration Q46H/64 Dissolved Ozone System state is retained even if power is cycled. Press ENTER to initiate user entry mode, and entire value will flash. Use the UP arrow key to modify the desired value, selections are ON for engaging the HOLD function, and OFF to disengage the function.
  • Page 49 Part 6 – Configuration Q46H/64 Dissolved Ozone System operation. Press ENTER to initiate the user entry mode, and the right- most digit of the value will flash. Use arrow keys to modify desired value. The starting display value in SIM mode will be the last read value of the input.
  • Page 50 Part 6 – Configuration Q46H/64 Dissolved Ozone System Failsafe This function allows for setting system relays to a failsafe condition. In a failsafe condition, the relay logic is reversed so that the relay is electrically energized in a normal operating state. By doing this, the relay will change state when either the setpoint is exceeded or power is lost.

  • Page 51: Part 7 - Calibration

    Part 7 – Calibration Ozone Calibration After power is applied, the sensor must be given time to stabilize. This is best done by following the zeroing procedure below. Establishing a stable zero is important to the proper operation of the monitor. A complete calibration will include zeroing and spanning the sensor. It is generally unnecessary to set the sensor zero unless the monitor will be used primarily for measurements below 0.5 PPM.

  • Page 52: Ozone Span Cal

    Part 7 – Calibration Q46H/64 Dissolved Ozone System value remain high and result in calibration failures, review the Service section of this manual, and then contact the service dept. at ATI for further assistance. The sensor zero offset value in nA from the last zero calibration is displayed on the lower line of the Default Menus for information purposes.

  • Page 53: Temperature Calibration

    Part 7 – Calibration Q46H/64 Dissolved Ozone System arrow keys and press ENTER. The system then performs the proper checks. Note that the monitor will wait for up to 2 hours for the user to enter the measured value for calibration. If no entry is made after 2 hours, the monitor will return to normal operation with the original slope value remaining unchanged.

  • Page 54: Ph Calibration

    Part 7 – Calibration Q46H/64 Dissolved Ozone System pH Calibration The pH calibration menus will not be seen unless the optional pH sensor input is turned ON and a pH sensor is connected to the instrument. See Section 6.24 for more details. The pH calibration functions appear in the CAL menu listing when the optional pH input is enabled in the CONFIG menu.

  • Page 55: One-Point Ph Cal

    Part 7 – Calibration Q46H/64 Dissolved Ozone System 6. Press the ENTER key. The display will begin to flash. Using the UP and LEFT arrow keys, adjust the displayed number to the known value of the pH buffer. The exact temperature compensated number for pH buffers is typically written on the side of the buffers shipping container.

  • 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 Part 8 – PID Controller Details Q46H/64 Dissolved Ozone 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 58: Classical Pid Tuning

    Part 8 – PID Controller Details Q46H/64 Dissolved Ozone System Classical PID Tuning Unlike many high speed position applications where PID loops are commonly used, the chemical feed application employed by this instrument does not require intense mathematical exercise to determine tuning parameters for the PID.
  • Page 59 Part 8 – PID Controller Details Q46H/64 Dissolved Ozone 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 60: Part 9 - System Maintenance

    Part 9 – System Maintenance General The Q46H/64Dissolved Ozone System will generally provide unattended operation over long periods of time. With proper care, the system should continue to provide measurements indefinitely. For reliable operation, maintenance on the system must be done on a regular schedule.

  • Page 61: Sensor Acid Cleaning

    Part 9 – Sensor Maintenance Q46H/64 Dissolved Ozone System Sensor Acid Cleaning Over an extended operating period, ozone sensors can slowly accumulate deposits on the surface of the gold electrode. Typically, this type of buildup occurs over years of operation, but can sometimes occur more quickly if high levels of manganese, iron, or other metals are dissolved in the water.
  • Page 62 Part 9 – Sensor Maintenance Q46H/64 Dissolved Ozone System NOTE: DO NOT use a soap containing any oils (such as lanolin). Oils can coat the glass electrode and harm sensor performance. Soak the sensor for several minutes in the soap solution. Use a small, extra-soft bristle brush (such as a mushroom brush) to thoroughly clean the electrode and saltbridge surfaces.

  • Page 63: Replacing Thes

    Part 9 – Sensor Maintenance Q46H/64 Dissolved Ozone System Replacing the Saltbridge and Reference Buffer Solution 1. Hold the sensor with the process electrode pointing up. Place a cloth or towel around the saltbridge. Turn the saltbridge counterclockwise (by hand) to loosen and remove the saltbridge.

  • Page 64: Flow Cell Maintenance

    Part 9 – Sensor Maintenance Q46H/64 Dissolved Ozone System Flow Cell Maintenance The maintenance on the flow cell is simple cleaning. The flow cell is clear to make examination of the condition of the sensor easier without interfering with operations. The flow cell may be cleaned by wiping or by washing with detergents or dilute acids.

  • Page 65: Part 10 - Troubleshooting

    Part 10 – Troubleshooting 10.1 General The information included in this section is intended to be used in an attempt to quickly resolve an operational problem with the system. During any troubleshooting process, it will save the most time if the operator can first determine if the problem is related to the analyzer, sensor, or some external source.

  • Page 66: Analyzer Tests

    Part 10 – Troubleshooting Q46H/64 Dissolved Ozone System 8. Carefully examine any junction box connections for loose wiring or bad wire stripping. If possible, connect the sensor directly to the analyzer for testing. 9. Check sensor membrane for fouling. Look closely for signs of grease or oil which may be present.

  • Page 67: Display Messages

    Part 10 – Troubleshooting Q46H/64 Dissolved Ozone System 10.4 Display Messages The Q46 Series instruments provide a number of diagnostic messages which 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. MESSAGE DESCRIPTION POSSIBLE CORRECTION...
  • Page 68 Part 10 – Troubleshooting Q46H/64 Dissolved Ozone System MESSAGE DESCRIPTION POSSIBLE CORRECTION Same as “Temp High” above. Temp Low The temperature reading is < -10 ºC TC Error TC may be open or shorted. Check sensor wiring and perform RTD test as described in sensor manual.

  • Page 69: Sensor Tests

    Part 10 – Troubleshooting Q46H/64 Dissolved Ozone System 10.5 Sensor Tests 1. Check the membrane condition. A membrane that is not stretched smoothly across the tip of the sensor will cause unstable measurements. If necessary, change membrane and electrolyte. 2. Dissolved Ozone sensors can be tested with a digital voltmeter (DVM) to determine if a major sensor problem exists.

  • Page 70: Ensor )

    Part 10 – Troubleshooting Q46H/64 Dissolved Ozone System If you suspect that water has gotten into a cable connection on a flow type sensor or into the plug connection of a submersible sensor, disconnect the cable and allow the parts of the sensor to sit in a warm place for 24 hours.

  • Page 71: Spare Parts

    Spare Parts Part No. Description 03-0407 P/S Assy, 100-240 VAC 03-0408 P/S Assy, 100-240 VAC with 3 4-20mA output 03-0409 P/S Assy, 100-240 VAC with 3 relay exp. Board 03-0410 P/S Assy, 12-24 VDC 03-0411 P/S Assy, 12-24 VDC with 3 4-20mA output 03-0412 P/S Assy, 12-24 VDC with 3 relay exp.
  • Page 72 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 73 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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