Electronic pump stroke counters monitor a mud pump's strokes per minute and total strokes, facilitating effective drilling fluid management. They operate by detecting piston movement through limit switches, which signals a counter that displays both total strokes and strokes per minute. This information helps drillers optimize rig performance and ensure smooth drilling operations.

1. How Does a Electronic
Pump Stroke Counter Work?
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2. https://www.drillinginstruments.com
How Does a Electronic Pump Stroke Counter Work?
Pump Stroke Counters measure a
mud pump’s strokes per minute and
total number of strokes. Pump
Stroke Counters assist the driller in
knowing how much mud is flowing
on a drilling rig. To understand how a
stroke counter works, you need to
understand how a mud pump works.
Click on Picture to Learn More about our pump Stroke Counter Systems

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Mud Pumps are the heart of a drilling
operation. Just as the human heart
circulates blood through the human
body, a mud pump circulates drilling
fluid downhole and back up again. By
circulating fluid, the mud pump cools
and lubricates the drill bit and flushes
cuttings from the hole.
How Does a Mud Pump Work?
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How Does a Mud Pump Work?
Two main kinds of mud pumps
are duplex and triplex pumps.
Duplex mud pumps have two
pistons, and triplex pumps have
three. In order to know how
many strokes per minute the
pump is performing at, you
need to have the right stroke
counter system.
Three Pump Stroke Counter
PN: CPS100-1 for Triplex Pump
Two Pump Stroke Counter
PN: CPS100 for Duplex Pump

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What’s in a Pump Stroke Counter System?
Cable to Second Micro Switch
CS181 - Micro Limit Switch with Stainless Steel Rod
CPS100 --Two Pump Stroke Counter
Junction Box
Crown Oilfield Instrumentation’s
Pump Stroke Counter Systems
come complete with Digital Stroke
Counter, Limit Switches and Cable
Assemblies for 2 or 3 Pumps, and
Junction Box. So, how do the work?

6. https://www.drillinginstruments.com
Pump Stroke Counter Systems function like a
blood pressure cuff. Each time a person’s
heart pumps, a blood pressure cuff reads the
systolic and diastolic pressure. Just like this
device, a pump stroke counter detects the
movement of the mud pump piston by a limit
switch and sends a signal to the stroke
counter.
How Does a Pump Stroke Counter System Work?

7. https://www.drillinginstruments.com
How Does a Electronic Pump Stroke Counter Work?
As the drive shaft moves the
piston, the piston touches the
limit switch stainless steel rod or
“whisker”. Each time the
whisker is touched, the switch
senses the signal as a contact
closure.
Micro Limit Switch
Mud Pump Piston
Mud Pump
Drive Shaft
Whisker

8. https://www.drillinginstruments.com
How Does a Electronic Pump Stroke Counter Work?
The contact closure is converted to
a signal, and the signal is
transmitted to the stroke counter.
The signal is then converted to a
logic pulse. In this picture the
duplex pump has two limit switches
that send signals to a junction box.
The junction box then sends the
signal to the stroke counter.
Junction Box
2 Pump Stroke Counter

9. https://www.drillinginstruments.com
How Does a Electronic Pump Stroke Counter Work?
Once the signal reaches the
counter, it is converted to a
logic pulse. The pulse feeds
two separate circuits:
Total Strokes,
Strokes/Minute.
Total Strokes -- The total
strokes circuit totals up the
contact closures and is
indicated in the Total Strokes
LED window.
Strokes/Minute -- The
rate circuit averages the
number of closures
against a real time clock
and is then indicated in
the Strokes/Minute LED
Window.

10. https://www.drillinginstruments.com
Mud pump stroke counters measure the rate that mud is
flowing through a drilling rig system. Each time the piston
moves, the pump stroke counter registers that movement.
Drillers use this information to make sure that drilling rigs are
running at peak efficiency.
In Summary

11. Have Questions?
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Give us a call at 1-877-908-3790
Or, email us at sales@drillinginstruments.com