Storage or transport, Volumetric calibration of hand pumps, Skc limited warranty and return policy – SKC 303 Film Flowmeter User Manual
Page 3
Storage or Transport
Disconnect the pump and replace the rubber cap on the lower inlet of the fl owmeter. The
instrument can be placed in any position without solution loss. SKC recommends that it be
transported in its case.
Volumetric Calibration of Hand Pumps
SKC Model 303 Flowmeter can be used to determine the volume of manual hand pumps such
as the bellows or piston pumps used with detector tubes. Follow these procedures:
Bellows Pumps (i.e., Dräger
®
)
1. Connect a detector tube to the pump according to the manufacturer’s instructions.
2. Connect the inlet of the tube to the rubber hose on top of the fl owmeter.
3. Compress the bellows pump and release slowly. Squeeze the rubber bulb on the fl ow-
meter. Bubbles (fi lm) will begin to form.
4. When the fi lm reaches the zero line on the fl owmeter, compress the bellows pump com-
pletely and release. The fi lm will move up the fl owmeter and stop when the bellows
pump is fi lled to capacity.
5. Record the point at which the fi lm stops. Most bellows pumps are designed to draw
100 ml. Lines on the fl owmeter are graduated at 90, 95, 100, 105, and 110 ml. Visually
extrapolate the volume reading if the fi lm stops between lines.
6. Calculate and record the volume.
Note: Pumps should be repaired if they fall outside of the 90 to 110 ml range.
Piston Pumps (i.e., Gastec
®
, MSA, Kitagawa)
1. Connect a standard detector tube to the piston pump according to the manufacturer’s
instructions.
2. Connect the inlet of the tube to the rubber hose on top of the fi lm fl owmeter.
3. While pulling the piston slowly back, squeeze the rubber bulb on the fl owmeter until
bubbles (fi lm) form.
4. Watch the fi lm movement closely. When the fi lm is exactly at the zero line on the fl ow-
meter, push the pump piston all the way in. Then, draw the piston out to full capacity
and lock it in place. The fi lm will move up the fl owmeter and stop when the piston
pump is fi lled to capacity.
5. Record the point at which the fi lm stops. Most piston pumps are designed to draw
100 ml. Lines on the fl owmeter are graduated at 90, 95, 100, 105, and 110 ml. Visually
extrapolate the volume reading if the fi lm stops between lines.
6. Calculate and record the volume.
Note: Pumps should be repaired if they fall outside the 90 to 110 ml range.
SKC Limited Warranty and Return Policy
SKC products are subject to the SKC Limited Warranty and Return Policy, which provides
SKC’s sole liability and the buyer’s exclusive remedy. To view the complete SKC Limited
Warranty and Return Policy, go to htt