Sibata 080040-710, Руководство по эксплуатации

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Product Overview
The LV-250R is a PM2.5 sampler. It is capable of mass concentration measurements of
particulate matter (PM2.5) using a filter, based on the interim measurement manual
designated by the Japanese Ministry of the Environment. With this sampler, airborne
particulates in environmental air are sucked in at a constant flow rate via a suction port.
PM2.5 particles (particulate matter with an aerodynamic diameter of 2.5
μ
m, and a 50 %
cut) passed through an impactor are then captured on a filter. Suction flow rate changes
are minimized by a constant flow rate unit equipped with temperature and ambient
pressure correction features, so the sizing characteristics of the impactor are kept
constant. The temperature of the filter unit is controlled so that it is always within 5
°
C of
the external ambient temperature. This prevents revaporization of volatile matter
contained in the PM2.5 particle sample.
Features
 The constant flow rate unit keeps the suction flow rate constant, thus maintaining the
sizing characteristics of the impactor.
 Automatically corrects the suction flow rate for changes in the external ambient
temperature or ambient pressure.

The suction pump provides a high suction pressure and maintains a stable suction
flow rate even with increases in filter pressure loss.
 To prevent revaporization of volatile matter, the temperature of the filter unit is always
controlled to within 5
°
C of the external ambient temperature.

The ON/OFF timer feature enables the user to set the sampling start time and stop
time.
 Displays the flow rate, time, temperature, pressure and other measurement values.
 The measurement values (total flow rate, average flow rate, flow rate coefficient of
variation, ambient pressure, pressure loss, ambient temperature, and filter
temperature) are imported to a PC for display or storage. (A special communications
cable and software are optionally available.)
 If a power outage causes a temporary stop, or problems with the flow rate or filter
temperature occur, the time of the occurrence is recorded.
 The equipment can use across a wide voltage range, from 100 V to 240 V. If a DC
power supply and cable are available, it can be battery operated.
Note: For use at anything other than 100 V AC, the DC power supply and cable
must be custom-ordered, so contact your Sibata sales representative or
the vendor.