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Summary of Contents for Met One Instruments GT-321
- Page 1 AC Tool Supply 877-207-1244 www.aikencolon.com GT-321 Product Page GT-321 H ARTICLE OUNTER PERATION ANUAL GT-321-9800 Rev D.doc www.aikencolon.com...
- Page 2 Copyright Notice Model GT-321 Hand Held Particle Counter Operation Manual © Copyright 2001 Met One Instruments, Inc. All Rights Reserved Worldwide. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language in any form by any means without the express written permission of Met One Instruments, Inc.
- Page 3 To avoid the possibility of accidental exposure, always power down the system any time service or repair work is being preformed. Repair of instrumentation manufactured by Met One Instruments, Inc. should only be attempted by manufacturer trained service personnel.
- Page 4 One Instruments, Inc. be replaced or repaired and return freight prepaid. In no case shall the liability of Met One Instruments, Inc. exceed the purchase price of the product. This warranty may not apply to products that have been subject to misuse, negligence, accident, acts of nature or that have or modified other than by Met One Instruments, Inc.
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Page 5: Table Of Contents
1.1. Safety Indicators........................6 Setting Up ......................7 2.1. Unpacking..........................7 2.2. Familiarization ........................... 8 2.3. Test Run ............................ 9 GT-321 Overview ....................9 3.1. Description..........................9 3.2. Applications ..........................10 3.3. Certifications..........................10 Operation ......................11 4.1. Iso-kinetic Sampling ........................ 11 4.2. -
Page 6: Safety
A WARNING indicates a hazard to you and calls attention to a procedure that if no correctly followed could result in injury or even death. Do not proceed beyond a warning without understanding the hazard. Page 6 of 18 GT-321 Operation Manual GT-321-9800 Rev D.doc www.aikencolon.com... -
Page 7: Setting Up
877-207-1244 Setting Up 2.1. Unpacking When you unpack the GT-321 and accessories, inspect the carton for obvious damage. If the carton is damaged notify the carrier. Unpack everything and make a visual inspection. You should have the following: 1. Carrying case 2. -
Page 8: Familiarization
Adjusts the LCD display contrast (Section 5.6). Flow Adjust Adjusts the flow rate of the unit (Section 5.5). Serial Port Can be used to access internal commands (Section 7). Page 8 of 18 GT-321 Operation Manual GT-321-9800 Rev D.doc www.aikencolon.com... -
Page 9: Test Run
The battery pack inside the GT-321 should be charged for 15 hours prior to use (see section 5.3 – Battery Pack). Once the battery pack is fully charged, remove the rubber cap from the GT-321 inlet nozzle. The inlet nozzle protrudes from a hole in the top of the GT-321 case. -
Page 10: Applications
3,000,000 particles per cubic foot. This high concentration limit allows the GT-321 to be used for indoor and outdoor aerosol particulate measurement. -
Page 11: Operation
The length of the connecting tubing going from the inlet on the GT-321 to the iso-kinetic probe can be increased if necessary but count losses, especially for larger particles, will become a problem after approximately a four-foot length. -
Page 12: Maintenance
AC Tool Supply 877-207-1244 samples are taken the GT-321 averages the results of the 10 samples for a more accurate result. The display will hold the average result until the start key is pressed to take another sample or until the unit is switched off. The <STOP> key is used to stop a sample at anytime. -
Page 13: Battery Pack
If it does not read zero it is probably due to a leak in the flow path inside the GT-321 or the zero filter is bad. If it is determined that there is a leak, the GT-321 must be sent back to the factory for repair. -
Page 14: Flow Rate Test
To test the flow rate, connect the flow meter to the sample inlet nozzle of the GT-321 using a short piece of flexible 1/8“ (3 mm) ID tubing, Tygon tubing is a good choice. -
Page 15: Troubleshooting
To do so may result in exposure to invisible laser radiation that can cause blindness. A factory-authorized person should do replacement of the sensor, vacuum pump, filter or any component inside the GT-321. Symptom Possible Cause... -
Page 16: Serial Communication Protocol
Line feed Notes: 1) The GT-321 will display one size range, but the unit actually has two count channels. 2) Channel one size (SIZE1) is fixed at the smallest size (normally 0.3 microns). 3) Channel two size (SIZE2) is selectable using the Select Key or the Change Size Command. -
Page 17: Specifications
0.79 kg, 28 ounces Supplied accessories Operation Manual, Serial Cable, Universal AC to DC Converter Module with AC Power Cord, Iso-kinetic SampleProbe, Screwdriver, Case, Zero test filter (Met One Part Number G3111) GT-321-9800 Rev D.doc GT-321 Operation Manual Page 17 of 18 www.aikencolon.com... - Page 18 Met One Instruments, Inc. Manufacturers Name: Declares, that the product(s): Particulate Monitor, Aerosol Mass Monitor, Particle Product Names: Counter GT-321, GT-321-1, GT-331, GT-521 Model Numbers: Product Options: Are in compliance with the following documents: Emissions: CISPR 11:1990 / EN 61326-1...
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