Downhole Sampler Clock

downhole actuator clock


The Leutert Driving Clock is a high temperature mechanical actuator. It has originally been designed to activate the Leutert PDS and OPS Bottomhole Samplers. Today it is also used to trigger other downhole instruments such as calipers and mechanical measuring devices. In conjunction with a clock coupling the actuator converts rotary motion into linear movement. It may be described as an adjustable time delayed trigger.

Clock ranges are available in different hours of total shut-off time. The winding head allows setting of partial times of respective total running time of the clock.

The clock is of extremely rugged construction and is designed to resist vibration, shock and temperature extremes encountered in oilfield and geothermal operations. It is not sensitive to shock, vibration and jarring. As such the Leutert clock is suitable for multiple downhole applications.



Clock ranges: 5 h, 10 h, 24 h
Max. operating temperature: 360 °F (180 °C)
Diameter: 1.18” (30 mm)
Length (approx.): Fig. A 15.7” (400 mm)
  Fig. B 10.6” (270 mm)
  Fig. C 9.0” (230 mm)
Weight (approx.): Fig. A 2.1 lbs (950 g)
  Fig. B 1.8 lbs (800 g)
  Fig. C 1.6 lbs (750 g)


Sampler Clock Dimensions