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USER MANUAL
®
®
COMPUTRAC
VAPOR PRO
MOISTURE ANALYZER
Firmware Revision 1.13.2
July 2011
ARIZONA INSTRUMENT LLC
3375 N Delaware Street | Chandler, AZ 85225 USA
800.528.7411 | 602.470.1414 | (f) 480.804.0656
www.azic.com
email:
General
azi@azic.com
International
intl@azic.com
Support
support@azic.com
AZI P/N 700-0049-F
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Table of Contents
Related Manuals for Arizona Instrument COMPUTRAC VAPOR PRO
Summary of Contents for Arizona Instrument COMPUTRAC VAPOR PRO
- Page 1 USER MANUAL ® ® COMPUTRAC VAPOR PRO MOISTURE ANALYZER Firmware Revision 1.13.2 July 2011 ARIZONA INSTRUMENT LLC 3375 N Delaware Street | Chandler, AZ 85225 USA 800.528.7411 | 602.470.1414 | (f) 480.804.0656 www.azic.com email: General azi@azic.com International intl@azic.com Support support@azic.com...
- Page 2 ® Computrac VAPOR PRO PROPRIETARY RIGHTS NOTICE The material in this manual contains valuable information developed by Arizona Instrument LLC for use ® with the Computrac line of moisture analyzers. No part of this manual can be reproduced or transmitted in any form or by any means, electronic, mechanical, or otherwise.
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Page 3: Table Of Contents
Table of Contents WARNINGS AND SAFETY INFORMATION ................4 INTRODUCTION .......................... 6 PRINCIPLES OF OPERATION ....................7 UNPACKING ..........................8 INSTALLATION ........................... 9 CHECK SENSOR STATUS ......................13 DRYNESS TEST ........................... 14 RH SENSOR CALIBRATION TESTS ..................15 Calibration Check ........................15 Sensor Calibration ........................ -
Page 4: Warnings And Safety Information
WARNINGS AND SAFETY INFORMATION • The VP-Series Moisture Analyzers comply with the Use only AZI supplied accessories and options with Underwriter Laboratories Inc. standards and European VP-Series Moisture Analyzers or check with AZI Council Directives Electrical Equipment before using any third party accessories, such as Laboratory Use, electromagnetic compatibility, and the printers and analytical balances, to verify stipulated safety requirements. - Page 5 Before using any cleaning or decontamination method rough handling during shipment. • except those recommended by Arizona Instrument, Save the box and all parts of the packaging to use check with AZI Customer Service at 1-602-470-1414 when returning your moisture analyzer for calibration.
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Page 6: Introduction
INTRODUCTION Arizona Instrument is proud to continue its leadership role in developing new technology for the ® ® moisture analysis industry. The Computrac VAPOR PRO is a giant step forward in the measurement of very low moisture levels. ® VAPOR A revolutionary moisture analyzer with a detection limit of 10 ppm, the Computrac ®... -
Page 7: Principles Of Operation
PRINCIPLES of OPERATION ® ® VAPOR PRO The Computrac utilizes a cylinder shaped bottle heater, a dry air - carrier gas flow system and a moisture sensor. The instrument heats a sample of test material contained in a 25 ml (milliliter) septum bottle. Volatiles driven from the sample are carried by the air system through the Sensor Block containing the Relative Humidity (RH) sensor. -
Page 8: Unpacking
UNPACKING Unpack the instrument and locate the following items: AZI Part Number: ® ® VAPOR PRO Computrac Moisture Analyzer CT-3100-L or CT 3100-L220V (CT-3100 or CT-3100-L) CT-3100-L100V differences Accessory Kit Y990-0139 Power Cord (varies with area) 200-0002 200-0003 200-0008 US/CANADA England Europe Clear Tubing, 1/8"... -
Page 9: Installation
The pressure from the compressed air or nitrogen system in most facilities will be at moderate pressure and normally require only a single stage regulator. The dry air generator, manufactured by Arizona Instrument LLC, P/N Y990-0143, produces the pressure required by the instrument and therefore, no additional regulator is need. - Page 10 • Instructions on the Drierite ® ® website tell how to regenerate the Drierite continued use. For further information, contact W.A. Hammond Drierite Co, Ltd at (937) 376-2927 or at www.drierite.com. The following diagrams are not to scale but illustrate the preferred connecting arrangements. Cylinder with two-stage regulator is connected to the desiccator with clear tubing [AZI P/N 345-0050].
- Page 11 If you plan to use a printer, electronic balance, and/or computer, connect them to the marked connectors at the back of the instrument. The accessory keyboard connects to a fitting on the side nearest the printer connector of the instrument. Connect all accessories while the instrument is turned OFF, and power ON the accessories before powering ON the instrument.
- Page 12 After a quick view of the instrument identification and the firmware version, the Main Test Screen will appear. Allow the instrument to warm up for 20 minutes. Page 12...
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Page 13: Check Sensor Status
CHECK SENSOR STATUS The display shows the function of the soft-keys at the bottom of the screen. Use the soft-key buttons below the display on the front panel to move through the menu screens and system settings. The function of each soft key will change as needed to provide the selection and input requirements of each menu screen. -
Page 14: Dryness Test
DRYNESS TEST ® For all tests using a bottle, ENSURE the slick Teflon side of the septum is to the inside of the bottle or the moisture trapped in the septum will cause false moisture indications. When the display on the Main Test Screen indicates “Ready to Test”... -
Page 15: Rh Sensor Calibration Tests
The water calibration test verifies that the instrument is working properly. This test only takes a few minutes. Arizona Instrument recommends that this test be run every day to verify the system’s calibration and accuracy. For greatest accuracy, each test should be run with a new ®... - Page 16 When “READY TO TEST” is displayed on the Main Test Screen, SELECT IN ORDER: • [Memry] • *RH SENSOR CAL* • Press [START] Accuracy of results should be within five (5) percent of the capillary capacity of 1000 micrograms. (950μg to 1050μg) Allow the test to proceed until completed.
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Page 17: Sensor Calibration
Sensor Calibration The Relative Humidity Sensor is calibrated using the same technique as for the calibration check. The difference is in what happens to the results. The calibration calculation may be used to calibrate the sensor whereas the check calculation is only for information. Therefore, the first portion of the sensor calibration is like the calibration check. - Page 18 When “READY TO TEST” is displayed on the Main Test Screen, SELECT IN ORDER: • [Memry] • *RH SENSOR CAL* • Press [START] Allow the test to proceed until completed. It should take five to seven (5 to 7) minutes. NOTE: At least five (5) tests are required for the proper analysis and correction factors to be calculated.
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Page 19: Temperature Calibration
TEMPERATURE CALIBRATION TIP: The temperature calibration and verification take approximately 5 hours. If time is critical, the process can be completed in approximately four hours by running the verification portion manually and opening the lid to cool the unit between the calibration and the verification. ®... - Page 20 ® Turn the VAPOR PRO ON. From the Main Test Screen, press [Menu] to bring up the MAIN MENU. Toggle down (if necessary) so that CALIBRATION MENU is highlighted - press [Selct]. At the Calibration Menu, toggle down until TEMPERATURE CALIBRATION is highlighted - press [Selct].
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Page 21: Running Moisture Tests
RUNNING MOISTURE TESTS ® ® VAPOR PRO The Computrac has 102 available positions to store test parameters for different materials. Storing the parameters ensures that each test of the same material will use the same parameters to assure accurate, reliable, and repeatable testing. Select Test Settings •... -
Page 22: To Select Programmed Test Temperature
To Select Programmed Test Temperature • Determining the Test Temperature Generally, use the highest temperature possible without causing other ‘undesirable’ conditions (such as melting or excessive release of other volatiles). The instrument is relatively insensitive to the exact temperature used. Too low a temperature will result in long test times and possibly low results. -
Page 23: To Select Sample Weight Entry Method
methods. This calculation constantly monitors moisture loss from the sample and extrapolates the final moisture concentration. Predict ending criteria provides the quickest test times. Time Ends the test when the programmed testing period has elapsed. Any value from 001 to 999 minutes may be entered. -
Page 24: To Select Bottle Purge Control
To Select Bottle Purge Control • Highlight the Bottle Purge Control line. • Press [Selct], then [Edit]. The bottle purge time is the time dry carrier gas flows through the sample bottle before a test begins. A value of 000 will disable the bottle purge. Any number other than 000 will adjust the purge time to that number of seconds. -
Page 25: Determine Optimum Parameters
DETERMINE OPTIMUM PARAMETERS Correlation to Reference Method For best accuracy and speed, the sample should evolve between 500 and 1000 micrograms of water during the test. Larger amounts will not significantly improve accuracy, and will only add to the test time. Smaller quantities will result in faster tests but may degrade accuracy, depending on the properties of the sample. - Page 26 The following table gives general guidance for the selection of sample size for various expected moisture levels. Note that the maximum sample size is also limited by the sample bottle. Do not fill the bottle over half full. This will normally be about eight (8) grams for the sample bottle ®...
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Page 27: Run Moisture Test
RUN MOISTURE TEST Tare a clean, empty sample bottle, including the septum and cap. Based on the expected moisture content of the sample, determine optimum sample size using the chart on page 26. However, do not fill the bottle over ½ full so that sufficient carrier gas may flow and pick up evolved moisture. -
Page 28: Computrac Vapor Pro Menu System
® ® VAPOR PRO COMPUTRAC MENU SYSTEM In the idle state, the Main Test Screen displays menu access keys at the bottom. From left to right they are: • [Memry] key - for accessing stored memory start selections, • [Menu] key - for accessing the Main Menu, and •... - Page 29 The [Menu] Key brings up a screen showing the following options: • MEMORY START MENU • STORED DATA MENU • CALIBRATION MENU • SETUP MENU • DIAGNOSTIC MENU TEMPERATURE CALIBRATION TDLTO: THIRTY DAYS: NO • Use the [Up] and [Down] keys to scroll through the selections. •...
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Page 30: Memory Start Menu
Memory Start Menu • ADD/EDIT MEMORY START - A list of stored test parameter sets. Sample ID: (Name) Test Temperatures Result Display Type Ending Criteria Method of Entering Sample Weight Bottle Purge Control. • REORDER MEMORY START - Allows the stored parameter sets to be rearranged, deleted, or copied. -
Page 31: Calibration Menu
Calibration Menu • PERFORM RH SENSOR CALIBRATION - A program to be used carefully and only when required to calibrate the moisture sensor. This selection uses stored data sets and calibrated microcapillary tubes to calculate and execute the automatic adjustment of the instrument. -
Page 32: Setup Menu
Setup Menu • CLOCK SETUP - Sets the internal clock for the correct time and date. • EXT. BALANCE SETUP - Selects the type of external balance. (AZI SP150 or SCI SA80) Selects the tare mode. (Fixed weight, manual bottle weight entry, or balance entry) ... - Page 33 • ACCESS KEY SETUP - Allows entry of the passwords used to prevent unauthorized alteration of stored parameter sets, or stored data sets. The “MASTER KEY” controls all functions. The “CALIBR KEY” controls memory start parameter list access. •...
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Page 34: Diagnostic Menu
Diagnostic Menu • VIEW SYSTEM SENSOR STATUS - Displays the current value of: RH measured by the RH Sensor, Flow in rate in milliliters per minute, Sensor Block temperature (BLOCK RTD), (RTD stands for Resistive Temperature Detector and describes the solid state devices used throughout the instrument to measure temperatures.) ... -
Page 35: Condition Prompts
Flow system filter plugged Remove and replace filter Source connected to ‘flow out’ barb Connect to ‘flow in’ barb Flow sensor failure Call Arizona Instrument Blocked Needle Check that bottle septum is not blocking needle port “THE RH SENSOR WAS NOT READY”... -
Page 36: System Failure Codes
It is possible for a failure to occur due to a transient condition. However, if the failure persists or occurs frequently, call Arizona Instrument Customer Service at (800) 528-7411 or (602) 470-1414. -
Page 37: Commonly Asked Questions
COMMONLY ASKED QUESTIONS Some commonly asked questions with answers and possible solutions follow. Q: “What if my calibration check results are out of range?” ® ® Perform a sensor calibration. The Computrac VAPOR PRO self-adjusts the internal calibration factors to the high precision moisture sensor, due to varying conditions (temperature, product accumulation in the flow system, component wear, etc.). - Page 38 Q: “What if the instrument indicates low flow when the input pressure is adequate?” #1 The needle may be clogged. Use the following procedure to clean the needle assembly and sensor chamber. For assistance, call AZI Customer Service at 800-528-7411 or 602-470-1414.
- Page 39 Q: “What about interferences?” The only known interferences are from ammonium hydroxide, ethanol, methanol and acetone. Samples containing these and similar chemicals should never be used. Additionally, never use these substances as cleaning agents in or ® ® VAPOR PRO on the Computrac .
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Page 40: Repair And Maintenance
REPAIR AND MAINTENANCE Routine maintenance consists of checking the Hydrophobic Filter for clogging or contamination, checking the needles for clogs, and cleaning the flow path between the needle and the filter. For clean samples, such as most plastic resin pellets, this is seldom necessary. For very dusty, high moisture or high volatile content samples, it may be necessary more often. -
Page 41: Instrument Cover Removal
INSTRUMENT COVER REMOVAL • Remove the access cover. See ACCESS COVER REMOVAL on page 40. • The sensor block is hot (68 °C); do not touch it with bare hands until it has been allowed to cool down. • Remove the instrument cover by unlatching the two latches on the back chassis wall. A long screwdriver is helpful. -
Page 42: Q: "How Do I Change The Filter?" Not On All Instruments
When used, the Hydrophobic Filter on top of the Sensor Block must be replaced if it becomes contaminated. Replace it only with the Hydrophobic Filter available from Arizona Instrument (AZI Part No. 990-0059). Before replacing a filter, it is good practice to flush the new filter with dry carrier gas to remove moisture adsorbed to the interior of the filter. -
Page 43: Q: "How Do I Adjust The Dry Air Flow
• Install a new filter by rotating it clockwise until finger tight. Reattach the clear tubing. If condensed material is visible in the tubing, replace the tubing. Note that this is a special type of hydrophobic tubing. The proper tubing is available from AZI as AZI Part Number 345-0050. - Page 44 • If FLOW IN is not 75 ± 2 mL/min (CT-3100-L) or 100 ± 10 mL/min (CT-3100), adjust the pressure regulator. There are two configurations of the flow regulator. • On older instruments: Locate the flow regulator that is mounted to the right of the display.
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Page 45: Q: "How Do I Set Up The Computrac
® ® VAPOR PRO Q: “How do I set up the Computrac to use the AZI SP150 or SCI SA800 digital balance?” Follow the steps below. • Beginning at the Starting Screen, select the prompts in order: Main Setup ... -
Page 46: Specifications And Ratings
Periodically contact Customer Service to see if any upgrades are available for your instrument. Customer Service may be reached by phone at (800)-528-7411 or (602)-470- 1414. If you prefer the internet, contact Customer Service at the Arizona Instrument web site, http://www.azic.com or e-mail direct at support@azic.com. -
Page 47: Warranty
® ® VAPOR PRO Arizona Instrument LLC warrants the Computrac to be free from defects in materials or workmanship for two (2) years from the date of purchase for those instruments sold in the USA. All international sales normally carry a one (1) year warranty. AZI will repair or replace, at its option, products that AZI determines to be defective during the warranty period. - Page 48 Revision F July 2011 If you have any questions regarding the operation of this instrument, contact Arizona Instrument Customer Service. You may call our toll free number from the US and Canada, (800) 528-4711. Our fax is (480) 804-0656. Internationally or in the Phoenix area, call (602) 470-1414.