... the concerned site etc. shall be recorded in detail. A sample data sheet is shown in Figure 2.1. 2.3 Monitoring Equipment 2.3.1 High volume samplers (HVS) in compliance with the following specifications shall be used for carrying out the TSP monitoring: (a) 0.6-1.7 m3/min (20-60 SCFM) adjustable flow range; (b) equipped with a timing/control device with +/- 5 minutes accuracy for 24 hours operation; (c) installed with elapsed-time meter with +/- 2 minutes accuracy for 24 hours operation; (d) capable of providing a minimum exposed area of 406 cm2 (63 in2); (e) flow control accuracy: +/- 2.5% deviation over 24-hr sampling period; (f) equipped with a shelter to protect the filter and sampler; (g) incorporated with an electronic mass flow rate controller or other equivalent devices; (h) equipped with a flow recorder for continuous monitoring; (i) provided with a peaked roof inlet; (j) incorporated with a manometer; (k) able to hold and seal the filter paper to the sampler housing at horizontal position; (l) ...

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