| |
DTM-652 |
NPL-632 |
| Telescope |
| Tube length |
158mm (6.22ft) |
153mm (6.02in) |
| Image |
Erect |
| Effective diameter of objective |
45mm/1.77in
(EDM: 50mm/1.97in) |
40mm/1.57in
(EDM: 50mm/1.97in) |
| Magnification |
33x (21x/41x w/optional eyepieces) |
26x (16x/32x w/optional eyepieces) |
| Field of view |
1°20' |
1°30' |
| Resolving power |
2.5" |
3" |
| Minimum focusing distance |
1.3m (4.26ft) |
1.6m (5.3ft) |
| Reticle illumination |
Provided (3 steps) |
| Distance measurement (with Nikon specified prism) |
| Under good conditions |
|
| with reflector sheet (5 x 5 cm) |
5 to 100m / 16.4 to 328.1ft |
1.6 to 300m / 5.3 to 980ft |
| With mini prism |
1100m / 3600ft |
1.6 to 3000m / 5.3 to 9800ft |
| With single prism |
2700m / 8900ft |
1.6 to 5000m / 5.3 to 16400ft |
| With triple prism |
3600m / 11800ft |
- |
| With nine prisms |
4400m / 14400ft |
- |
| Under normal conditions |
|
| with reflector sheet (5 x 5 cm) |
5 to 100m / 16.4 to 328.1ft |
1.6 to 300m / 5.3 to 980ft |
| With mini prism |
950m / 3100ft |
1.6 to 3000m / 5.3 to 9800ft |
| With single prism |
2400m / 7900ft |
1.6 to 5000m / 5.3 to 16400ft |
| With triple prism |
3100m / 10200ft |
- |
| With nine prisms |
3700m / 12100ft |
- |
Reflectorless mode
(white target)*1 |
- |
1.6 to 210m / 5.3 to 680ft |
| Readout display |
9999.9999m / 29999.999ft |
| Accuracy |
| Precise mode |
±(2+2ppm x D)mm |
±(3+2ppm x D)mm (-10°C to
+40°C)
±(3+3ppm x D)mm (–20°C to –10°C, +40°C to +50°C) |
| Normal mode |
±(4+2ppm x D)mm |
±(5+10ppm x D)mm |
| Least count |
| Precise mode |
0.1/1mm, 0.0005ft/0.002ft |
| Normal mode |
1/10mm, 0.002/0.02ft |
| Measuring intervals (DTM-652)*2 |
| Precise mode |
1.0 sec (initial: 1.0 sec) |
- |
| Normal mode |
0.5 sec (initial:1.0 sec) |
- |
| Measuring intervals (NPL-632)*2 |
| Prism mode(Precise mode) |
- |
1.3 sec (initial: 2.0 sec) |
| Prism mode(Normal mode) |
- |
0.5 sec (initial: 1.6 sec) |
| Reflectorless (Precise mode) |
- |
1.6 sec (initial: 2.6 sec) |
| Reflectorless (Normal mode) |
- |
0.8 sec (initial: 2.0 sec) |
| Ambient temperature range |
–20°C
to 50°C / –4°F to +122°F |
| Atmospheric correction |
| Temperature range |
-40°C to 60°C / -40°F to 140°F |
| Barometric pressure |
400 to 999mmHg/533
to 1,332hPa/15.8 to 39.3 in.Hg |
| Prism offset correction |
-999 to +999 |
| Angle measurement |
| Reading system |
Photoelectric detection
by incremental encoder
(diametrical detection for H/V circles) |
| Circular diameter |
79mm |
| Minimum increment |
| (Degree) |
0.5"/1"/5" |
1"/5"/10" |
| (Gon) |
0.1mgon/0.2mgon/1mgon |
0.2mgon/1mgon/2mgon |
| (MIL6400) |
0.002mil/0.005mil/0.02mil |
0.005mil/0.02mil/0.05mil |
| Accuracy |
1" / 0.3 mgon |
2" / 0.5 mgon |
| Dual-axis compensator |
| Method |
Liquid electric
detection, Dual-axis |
| Compensation range |
±3' |
| Setting accuracy |
±1" |
| Lumi-Guide |
| Working range |
100m / 330ft |
| Positioning accuracy |
within approx.
6cm /2.4in at 100m/330ft |
| Level vials |
| Sensitivity of plate level vial |
30"/2mm |
| Sensitivity of circular level vial |
10'/2mm |
| Optical plummet |
| Image |
Erect |
| Magnification |
3x |
| Field of view |
5° |
| Focusing range |
0.5m /1.6ft to |
| Display |
| Type |
Graphic LCD (128
x 64 dot) on both side |
| Point memory |
| Raw/coordinates |
10,000 records |
| External memory device |
CompactFlash
(CF) card, USB memory |
| Environmental specification |
IP54 |
| Dimensions(approx.) |
166 x 168 x 365mm
/ 6.5 x 6.6 x 14.4in |
| Weight |
| Main unit |
5.3 kg / 11.7lbs |
5.3 kg / 11.7lbs |
| BC-80 |
0.6 kg / 1.3lbs |
| Operating time |
DTM-652 |
Approx. 10 hours
(continuous distance/angle measurement)
Approx. 27 hours
(distance /angle measurement evey 30 seconds)
Approx. 28 hours (angle measurement) |
| NPL-632 |
Approx. 6 hours
(continuous distance/angle measurement)
Approx. 12 hours
(distance /angle measurement evey 30 seconds)
Approx. 25 hours (angle measurement) |
| battery caarger for BC-80/65 |
| Recharging time |
Approx. 3.0 hours
for full recharge |
