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I bought this unit last year for $2,000 to meet the monitoring requirements of one job (air duct cleaning). There isn't anything wrong with it, I just haven't used it since then. Here is the technical information: The Model GT-321 Particle Counter provides you with a more inexpensive way to monitor particle size and concentration. Particles are detected, counted, and then displayed according to the size ranges you have previously chosen. The GT-321 is a hand held unit that supplies an internal flow system and batteries. Each particle is individually counted and sized, this allows the instrument to label only the particles of interest. You can select from five ranges from the front panel. Set a lower particle size and the GT-321 will count all particles of that size and greater. Most typical monitors take one minute (or longer) before particle concentration can be displayed. The GT-321 has a built-in rate counter that shows current particle count every six seconds, each period is projected to provide a concentration per sample volume. Easy to use controls are supported by a microprocessor to enable the Particle Monitors to perform complex measurement tasks easily. Two button control for setting size discriminator and for starting the measurement cycle. In cycle operation, air is sampled and a laser optical system counts and sizes individual particles as they pass through the optical orifice. The flow rate is 0.1 cfm (2.83 lpm) which makes it ideal for low to high concentrations of airborne particulates. Up to 8 hours of power is provided with the self contained battery pack, 3.5 or 5 hours of continuous use. A supplied battery charger will operate the unit, even if the batteries are discharged. Battery charge time is 16 hours Unit comes with hard plastic, foam lined case. (please look at our rules and privacy policy) |
mablesexton@machine--tools.com (Mable Sexton) for additional information. This email is used for forwarding to newsgroup user.
