Ultrasonic Drilling Monitor (DM-604RR)
Ultrasonic Drilling Monitor
    Country of Origin:Japan
    Use:The DM 604RR helps improve the quality of a drilled hole and reduces working time and cost!
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General :
help improve the quality of a drilled hole and reduces working time and cost 
  1. provides on site records of the perpendicularity of drilled holes and the shape of cross sections in high accuracy 
  2. provides numerical measurement data that can be easily imported into various windows applications 

Features :
The DM-604RR supplies clear records of a drilled hole even in slurry , heavily contaminated with dirt and sand 
  1. it has the facility to cancel the oscillation line echo that often prevents very close echo recordings 
  2. the sensor device is automatically controlled to stop at the casing and at the bottom of the hole . an emergency return function is also included .
  3. depth range mark ,depth mark , drilled hole mark , data ,time .can be printed on the recording paper

Recorder unit
Measuring system Ultrasonic echo sensing system
Recording system Direct recording using the belt
Recording paper Electrosensitive recording paper 250 mm x 20 m (DMP-250)
Measuring range (radius) 0.5 m、1.0 m、2.0 m、4.0 m
Measuring accuracy ±2% at full scale
Power supply 100/110/120/220/240 VAC,
50/60 Hz
Operating temperature -10°C to +50°C (14°F to 122°F)
Winch unit
Up/down speed (Continuously controllable from the recording unit) 0 to 20 m/min
Up/down movable distance 100 m maximum
Bottom and casing sensing system Automatic sensing by limit switch
Operating temperature -10°C to +50°C (14°F to 122°F)


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