Soap Film Flowmeter 311-1000 Operating Instructions 3702 PDF
Contents
1. Operating Instructions 863 Valley View Road Eighty Four PA 15330 USA Tel 724 941 9701 e mail skctech skcinc com Soap Film Flowmeter Catalog No 311 1000 Assembly Screw the tripod legs into the base ring Insert the bulb end of the flowmeter into the center hole of the base ring and slide the glass down into the ring until the zero line is approximately 1 1 inches above the base ring Tighten the screws until the O ring is compressed snugly against the glass Preparation Tip the flowmeter at an angle and pour a small amount of film solution into the top of the glass tube so that the liquid runs down the sides Squeeze the rubber bulb occasionally to release trapped air and continue adding film solution until the liquid fills the bulb and rises to a level just below the side arm inlet To calibrate a sample pump connect the pump with the sampling media in line if applicable to the appropriate end of the flowmeter If the pump draws air connect it to the rubber tubing attached to the rubber stopper see Figure 1 on reverse side If the pump blows air connect it to the lower side arm of the flowmeter using rubber tubing Operation Turn on the pump Gently squeeze the rubber bulb to bring the liquid level momentarily above the sidearm inlet Bubbles soap film will form which travel up the glass tube with the air flow Repeat until the bubbles travel the length of the tube without breaking CAUTION Do not squeeze the bulb for m2. ev 0803
3. ore than an instant Vigorous squeezing may form a froth which makes timing bubbles difficult and may cause film solution to be drawn into the pump Use a precision stopwatch to time a single film as it travels between the volume lines marked on the glass Start the stopwatch when the film reaches the zero line and stop the stopwatch when the film reaches the volume line It is usually best to form several bubbles 5 to 6 seconds apart and time the last bubble Record the time Repeat the procedure at least three times ending at the same volume line and average the results Determining the Flow Calculate the flow using the equation a j x Volume line used ml Flow ml min Time ec Outlet upper port SKC Flowmeter inlet lower side arm 00 mbt Close up of 311 Flowmeter side arm inlet Flowmeter Media outlet Inlet Media lower side arm port Pump inlet mlet Sample pump Figure 1 311 Series Flowmeter in calibration train with vacuum pump Notice This operating instruction may not address all safety concerns if any associated with this product and its use The user is responsible for determining and following the appropriate safety and health practices and regulatory limitations if any before using the product The information contained in this document should not be construed as legal advice opinion or as a final authority on legal or regulatory procedures Form 3702 R
Download Pdf Manuals
Related Search