Ditch Witch FM13V - Manual (Page 32)

32 FM13V - OPERATION
Mix Drilling Fluid
32 FM13V - OPERATION
Mix Drilling Fluid
Measuring Funnel Viscosity
Viscosity is the measure of internal resistance of a fluid to flow;
the greater the resistance, the higher the viscosity. Viscosity of
drilling fluids must be controlled.
To determine viscosity, you will need a Marsh funnel and a
measuring cup, available from your Ditch Witch Dealer.
1. Take a fresh sample from the
drilling fluid tank. The sample
must be more than 1 qt
(.95 L).
2. Hold funnel over 1 qt (.95 L)
measuring cup and place a
finger over outlet.
3. Pour test sample into top of
funnel through screen to
ensure no large particles
enter the funnel that might
alter the measurement. Fill to screen.
4. Remove finger and time flow. Count the number of seconds
necessary for 1 qt (.95 L) of fluid to pass through funnel. The
number of seconds is the viscosity.
5. Thoroughly rinse measuring cup and Marsh funnel with
water.
Measuring Funnel Viscosity
Viscosity is the measure of internal resistance of a fluid to flow;
the greater the resistance, the higher the viscosity. Viscosity of
drilling fluids must be controlled.
To determine viscosity, you will need a Marsh funnel and a
measuring cup, available from your Ditch Witch Dealer.
1. Take a fresh sample from the
drilling fluid tank. The sample
must be more than 1 qt
(.95 L).
2. Hold funnel over 1 qt (.95 L)
measuring cup and place a
finger over outlet.
3. Pour test sample into top of
funnel through screen to
ensure no large particles
enter the funnel that might
alter the measurement. Fill to screen.
4. Remove finger and time flow. Count the number of seconds
necessary for 1 qt (.95 L) of fluid to pass through funnel. The
number of seconds is the viscosity.
5. Thoroughly rinse measuring cup and Marsh funnel with
water.