A659 Density / Caliper Tool 43mm
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Tool Description
Caliper and Density sondes have application in coal, iron ore and groundwater exploration as well as engineering and other mineral exploration.
Caliper
The caliper sonde provides quantitative information about hole-diameter. The caliper is an electromechanical unit that, by use of a spring-loaded arm, gives a measurement of borehole diameter. Knowledge of borehole diameter can be used to correct the response of the density log that is sensitive to borehole diameter. It can also provide an indication of the mechanical properties of the rocks by showing areas of caving.
Density
The unusually low density of coal means that it may be identified readily by the density sonde. The actual value of the density is an indication of the ash content. Thin ash bands and seam splits may be easily discerned.
In iron ore exploration, ore density is a useful measure of iron content.
For groundwater exploration strata density can be related to porosity.
Engineering applications use the density log as a reliable indicator of rock strength. Factors such as weathering, fracturing and porosity can be evaluated - these seriously affect mining and excavation characteristics. Quantitatively, density can be allied to such strength parameters as Poisson's ratio. Generally thin but often critically important strata such as volcanic ash and carbonates can be identified.
| FEATURES |
| Convenient and simple to use |
| Density and Caliper Logs in one run. |
| MEASUREMENTS |
| Density and Borehole Diameter |
| APPLICATIONS |
| Coal, Ground Water |
Mineral detection |
| OPERATING CONDITIONS |
| Borehole type |
Borehole type: open-hole, water-filled |
| TOOL SPECIFICATIONS |
| Diameter |
43 mm / 1.692 in |
| Length |
1430 mm / 56.299 in |
| Weight |
8 kg / 17.636 lb |
| Min. Temperature |
0ºC / 32 ºF |
| Max. Temperature |
70ºC / 158ºF |
| Max. Pressure |
21 000 kPa / 3000 psi |
| Tool Voltage Required |
30 VDC |
| Tool Current Required |
60 mA |
| Communications |
Digital DOP |
| Cable Conductors Required |
1 or 4 |
| SENSORS |
| Density |
NaI Crystal |
| Range |
1 - 3 g/cc |
| Caliper |
Single Caliper Arm |
| Range |
50 - 254 mm / 2 - 10 in |
| SHIPPING SPECIFICATIONS |
| Length |
1500 mm / 59.055 in |
| Width |
120 mm / 4.724 in |
| Height |
120 mm / 4.724 in |
| Weight |
10 kg / 22.046 lb |
| SALES INFORMATION |
| Click here to contact sales for more information |
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