CSJ16 Drillhole Meters for Depth and Obliquity Measurement

CSJ16 Drillhole Meters are microprocessor-d instruments which combine a high degree of fuctionality and reliability．CSJ16 is CSJ10 upgrading equipment, used in mining and tunneling engineering measurement of deep hole (φ60 ~ 110 mm) hole depth, tilt angle and temperature。Operator makes use of extension rods to extend probe to be close to drillhole and measure depth and obliquity of the drillhole.

The principle for measuring depth is d upon echo ranging technique. The acceleration sensor is used to measure obliquity., temperature measurement using temperature sensors, and micro controller as the core parts of the instrument has many intelligent functions: such as the acoustic echo received d on distance function of gain control and automatic gain control; the position display to obsteuctions and fissures in the drillhole, so that recognition of the hole bottom in multiple echos; Users can adjust transmitted strength and acoustic emission frequency according to the geologic conditions of cannon hole rock, in order to more accurately find hole depth measuring value; According to the actual temperature of the air velocity affects the hole depth measuring value correction; Tangent function for the signals from the angle sensors is calculated, as well as to correct zero installation deviatione, etc.

the main improving of CSJ16 relative to CSJ10 is: (1) Improves the correct probability of measuring depth by intelligent recognition method to eliminate the affect of secondary acoustic echo or multiple echos; (2)Increasing the receiving sensitivity, so as to improve of the correct probability of measuring broken hole and to measure larger or deeper holes (3) To extend working time of battery .

CSJ10D has serial communication to computer,so that the holes data measured by the meter be able to readout on panel but also.make tab and print.

Technical Data and Function

Ranges and Accuracy for Depth Measure 0-40 m±0.3 m with bland section 3m

Ranges and Accuracy for Obliquity Measure 0-90±1.0 degree

Ranges and Accuracy for Obsteuctions and Fissures Display 3-38 m±1m

Selection of Sonic Transmit Frequency 35 level

Adjustment of Sonic Transmit Intencity 6 step

Storage and Readout to Drillholes Data with Max2720 holes

Clean out of Data for given hole and full holes

Communication Interface: RS232-ASCⅡ，9600 baud

Correct of Zero departure for Obliquity Measure : by key operation

Battery under voltage alarm

Scanning the introspection display device

External Dimensions: 270×205×140mm for meter, Φ46×60 for probes

Weight: 2.5kg

Operator Interface

Left  Window: 3-digit Depth Displays with 7 LED segments

Right Window: 3-digit Obliquity Displays with 7 LED segments

36 LED Column: Place Display of Obsteuctions and Fissures in hole

4 LED Combination: Display of Sonic Transmit Intencity

Key Functions

ON/OFF Key：Power on/off

SET Key：Allows configuration mode to be entered

Δ  Key : a) Increases sonic transmit intencity;

b)Choice drillhoies group in configuration mode of Data store(Cun), Data access(qu) and Data clean out(qin);

     c)Increases sonic transmit frequency in configuration mode of frequency selection

▽ Key :a) Decreases sonic transmit intencity;

b)Choice drillhoies number in configuration mode of Data store(Cun), Data readout(qu) and Data clean out(qin);

      c)Correct of Zero departure for Obliquity Measurement in configuration mode of correct of Zero

ENT Key :a) Confirm to start measuring

b)Confirm the operation to Data store(Cun), Data readoutqu), Data clean out(qin) and Data serial communication (SC)

c) Scanning the introspection display device

Accesory

Probe: In which housed both of sonic transducer and Obliquity sensor with diameter of50mmand60mm

Cable: 6 core shield cable with length of5mfor connecting meter and probe

Batteries: 6V  1.3Ah

Extension bar：2 pieces of φ20×1000mmstainless steel tube with screw thread to extend probe to be close to drillhole

Changsha Yuanyu Instrument Co Ltd

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