Easily to position and set up, the DM-602R & DM-604R provides quick and accurate recordings of excavations.
The DM-602R/604R supplies clear records of a drilled hole even in slurry, heavily contaminated with dirt and sand.
Clear and precise records are supplied due to the DM-602R/604R unique signal processing which discriminates wall echoes from the noise. The drilling monitor has the facility to cancel the oscillation line echo that often prevents very close echo recordings. 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. Depth range mark, depth mark, drilled hole mark, date, time, etc. can be printed on the recording paper.
Limit switches are provided to avoid possible wire breakage or entanglement of the wire and cable. Recorded results can be outputted to an external PC via the RS232C output port. A non-fuse circuit breaker is used for circuit protection, eliminating the need for cumbersome fuse replacement at the construction site.