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O & M Manual Model Q45CT Portable Toroidal Conductivity Measurement System 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...
Part 1 - Introduction General The Model Q45CT Portable Conductivity monitor/analyzer provides an extremely versatile measurement system for monitoring and control of conductivity over the range of 20 µS/cm to 2.000 Siemen/cm. The system operates on two AA batteries, and will run continuously for approximately 240 hours.
Model Q45CT Toroidal Cond. Portable Transmitter Part 1 - Introduction Features • Standard Q45CT electronic transmitters are designed to be a fully isolated, battery operated instrument. The monitor can be quickly converted to either a loop power transmitter or line powered analyzer.
Model Q45CT Toroidal Cond. Portable Transmitter Part 1 - Introduction Outputs: Two 0-2.5 VDC isolated outputs are provided on for connection to data recorders, etc. Battery Life: Approximately 240 hours of operational use on a set of batteries (without backlight).
Part 2 –System Specifications General The Q45CT Portable Conductivity System comes complete with a specially designed handle that allows the system to be comfortably carried, or quickly strapped to a railing. Although the system is designed to be a portable system, it can be permanently mounted for longer term field use.
Part 3 – Electrical Installation General The sensor cable can be quickly connected to the Q45 terminal strip by matching the wire colors on the cable to the color designations on the label in the monitor. Keep signal cable away from AC power lines, adjustable frequency drives, motors, or other noisy electrical signal lines.
10 minutes. Battery / Power Circuit Board Q45CT monitors are powered by internal AA alkaline batteries Figure 5 shows this board assembly with batteries installed. The battery circuit board contains 3 switch assemblies as shown in the drawings.
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Part 4 – Configuration Model Q45CT Portable Transmitter POWER CABLE DC BATTERY BOARD (REAR OF ENCLOSURE) Figure 4 - Battery Board Connections The first (S1) is an On/Off slide switch. This switch must be in the ON position for operation. Turn it to OFF if you do not intend to operate the monitor in the next week or two.
Part 4 – Configuration Model Q45CT Portable Transmitter batterieshave only about 35% of the capacity of an alkalines. However, NiMH batteries can be recharged hundreds of times. The third switch assembly is a single slide switch (S3) which defines whether the 0-2.5 VDC signals from the monitor are isolated or non-isolated.
Part 4 – Configuration Model Q45CT Portable Transmitter 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.).
Part 4 – Configuration Model Q45CT Portable Transmitter 4.51 Keys All user configurationsoccur 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.
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Part 4 – Configuration Model Q45CT Portable Transmitter 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.
Part 4 – Configuration Model Q45CT Portable Transmitter Software The software of the Q45CT 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].
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Part 4 – Configuration Model Q45CT Portable Transmitter This tells the system that the user wishes to perform a change on that item. For single item type screens, once the user presses the ENTER key, part or all of the variable will begin to flash, indicating that the user may modify that variable using the arrow keys.
Part 4 – Configuration Model Q45CT Portable Transmitter 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.
Part 4 – Configuration Model Q45CT Portable Transmitter 4.8 Calibration Menu [CAL] The calibration menu contains items for frequent calibration of user parameters. There are three items in this list: Cal Cond, Cal Temp, and Cal TC Factor. Cal Cond...
Press ENTER to initiate user entry mode and the first digit will flash. Use arrow keys to modify value. See spare parts section for the Q45CT lock/unlock code. Press ENTER to toggle lock setting once code is correct. Incorrect codes do not change state of lock condition.
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Part 4 – Configuration Model Q45CT Portable Transmitter Main Display This function allows the user to change the measurement in 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.
Part 4 – Configuration Model Q45CT Portable Transmitter TDS Factor This function sets the linear relationship of the TDS (total dissolved solids) reading to the conductivity measurement. The actual units for the slope are in mg/L/μS. The default value is 00.49 mg/L/μS.
Part 4 – Configuration Model Q45CT Portable Transmitter 4.11 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.
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Part 4 – Configuration Model Q45CT Portable Transmitter no corrupt data is stored. Therefore, the system continues to function normally on the data that was present before the calibration was attempted. After 30 minutes or if power to the transmitter is cycled, the failure for calibration will be cleared until calibration is attempted again.
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Part 4 – Configuration Model Q45CT Portable Transmitter Auto-Off Enables the automatic shut-off feature for the instrument. If ON, the instrument will automatically shut-off in 60 minutes after no keys are pressed to save power. If OFF, the meter will stay powered continuously until either the internal power...
Part 5 – Calibration Overview and Methods Calibration of the Q45CT 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.
Part 5 – Calibration Model Q45CT Portable Transmitter 5.12 Zero Cal Calibration Explained The sensor offset must be set for the system only on initial sensor installation, or when the cable length has been altered. The Zero Cal method establishes all of the sensor offset points for the instrument’s 6 ranges of operation.
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5.24). It is recommended to leave the system in AUTO mode for this reason. If the Q45CT is in a manual range, the user must be careful to calibrate with a solution that falls into the manual range selected. If the calibration solution is outside the manual range, an error will result.
The surface area of the electrodes, the spacing of the electrodes and the sensor cable all contribute to cell factor of the sensor. By entering the factory cell value labeled on the sensor cable, the Q45CT adjusts the factory calibration to match the characteristics of the specific sensor.
Part 5 – Calibration Model Q45CT Portable Transmitter To begin the sensor zero cal, verify that the sensor is connected and clean and dry. It should be held in the air with the electrodes at least 1 foot away from any nearby objects.
Part 5 – Calibration Model Q45CT Portable Transmitter temperature. Adjustments up to ± 5 °C from the factory calibrated temperature are allowed. Press ENTER. 5. The calibration data gathering process will begin. The message Wait will flash as data is accumulated and analyzed.
Part 6 – System Maintenance 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. Then press the UP arrow key until the Fault List appears.
Part 6 – System Maintenance Model Q45CT Portable Transmitter Display Messages The Q45 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.
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Part 6 – System Maintenance Model Q45CT Portable Transmitter 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.
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Part 6 – System Maintenance Model Q45CT Portable Transmitter 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 50%. Perform sensor tests as described in sensor manual.
Part 6 – System Maintenance Model Q45CT Portable Transmitter Spare Parts Part No. Description 07-0044 Portable Conductivity Monitor, 3 VDC w/ two 0-2.5 V Outputs 63-0080 Toroidal Sensor, Noryl, (1000 RTD) Lock/Unlock Code: 1453 O&M Manual Rev-G (7/15)
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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.
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