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Newmont,. CRIPPLE CREEK & VICTOR <br /> PO Box 191 <br /> 100 N.3rd Street <br /> CRIPPLE CREEK&VICTOR victor CO 80860 <br /> Flume Calibration <br /> To confirm flume is level, use a long enough level to span the support brackets of the <br /> flume length wise, and across the width at the inlet, and the outlet. Check level <br /> regardless of absent flow. <br /> If flume is out of level use the adjustment all threads and adjust flume to level. There <br /> are four adjustment rods for adjusting level. Some excavating may be necessary to <br /> access the adjustments. <br /> If flow through flume is greater than 0.3 you may use flo-mate to calibrate flume. If <br /> flow is less than 0.3 use bucket and stop watch method (See Weir Calibration, Section <br /> 7). <br /> To calibrate flow through the flume, attach flo-mate reader to staff. Note the depth <br /> of water on flume staff. <br /> • Place staff and flo-mate in flume with instrument at 30% total depth from bottom. <br /> Instrument will provide a velocity measurement. <br /> Calculate flow: <br /> Depth x width x velocity = flow <br /> Compare instrument measurement with known value attained from water depth in <br /> flume. Values should be with-in 10% of each other. Document values on the flume <br /> calibration log. If flow is not sufficient to use flo-mate, use calibrated bucket and stop <br /> watch to measure flow. <br /> Weir Calibration <br /> Use calibrated bucket to collect water, use stop watch to time the collection of water <br /> to calculate flow. <br /> Volume of bucket/ Collection time= flow x 60= GPM <br /> Ex. 1 gallon 5.0 seconds <br /> 1/5 x60 =12 GPM <br /> Compare calculated flow to flow reading from weir. <br /> • <br /> Department THIS DOCUMENT IS UNCONTROLLED IN HARD COPY FORMAT Doc Id: <br /> SI.It Date of This Issue--/-/-- Date of Next Review:--/--/-- Page 66 of 73 <br />