| |
DTM-552 |
DTM-532 |
DTM-522 |
NPL-522 |
| Telescope |
| Tube length |
158 mm / 6.22 in. |
153mm / 6.02in. |
| Image |
Erect |
| Effective diameter of objective |
45mm / 1.77 in.
(EDM: 50 mm / 1.97 in.) |
40mm / 1.57in
(EDM: 50mm / 1.97in.) |
| Magnification |
33 x (21 x / 41 x with optional eyepieces) |
26x (16 x /32 x w/optional
eyepieces) |
| Field of view |
1°20'
(2.3 m at 100 m / 2.3 ft. at 100 ft.) |
1°30' |
| Resolving power |
2.5" |
3" |
| Minimum focusing distance |
1.3 m / 4.26 ft. |
1.6m / 5.3ft. |
| Reticle illumination |
Provided (3 steps) |
| Distance measurement(with Nikon specified prism) |
| Under good conditions |
(no haze with visibility over 40 km / 25 miles) |
|
With reflector sheet
(5 x 5cm) |
5 to 100 m / 16.4 to 328.1 ft. |
1.6 to 300m / 5.3 to 980ft. |
| With mini prism |
1,100m / 3,600 ft. |
1.6 to 3000m / 5.3 to 9800ft. |
| With single prism |
2,700 m / 8,900 ft. |
1.6 to 5000m / 5.3 to 16400ft. |
| With triple prism |
3,600 m / 11,800 ft. |
- |
| With nine prisms |
4,400 m / 14,400 ft. |
- |
| Under normal conditions |
(ordinary haze with visibility about 20 km / 12.5 miles) |
|
With reflector sheet
(5 x 5cm) |
5 to 100 m / 16.4 to 328.1 ft. |
1.6 to 300m / 5.3 to 980ft. |
| With mini prism |
950 m / 3,100 ft. |
1.6 to 3000m / 5.3 to 9800ft. |
| With single prism |
2,400 m / 7,900 ft. |
1.6 to 5000m / 5.3 to 16400ft. |
| With triple prism |
3,100 m / 10,200 ft. |
- |
| With nine prisms |
3,700 m / 12,100 ft. |
- |
| Reflectorless mode (white target*) |
- |
1.6 to 210m / 5.3 to 680ft. |
| Readout display |
9999.9999 m / 29999.999 ft. |
| 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 mm / 1 mm, 0.0005 ft. / 0.002 ft. selectable |
0.1/1mm, 0.0005ft / 0.002ft. |
| Normal mode |
1 mm / 10 mm, 0.002 ft. / 0.02 ft. selectable |
1/10mm, 0.002 / 0.02ft. |
| Measuring intervals (DTM-502 series)*2 |
| Precise mode |
1.0 sec. (initial 1.0 sec.) |
- |
| Normal mode |
0.5 sec. (initial 1.0 sec.) |
- |
| Measuring intervals (NPL-522)*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 999 mhg / 533 to 1332 hpa / 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 |
79 mm |
| Minimum increment |
| (Degree) |
0.5" / 1" / 5" |
1" / 5" /10" |
| (Gon) |
0.1 mgon /
0.2 mgon /
1 mgon |
0.2 mgon /
1 mgon /
2mgon |
| (MIL6400) |
0.002 mil /
0.005 mil /
0.02 mil |
0.005 mil /
0.02 mil /
0.05 mil |
| Accuracy (horizontal and vertical) |
1" / 0.3 mgon |
2" / 0.5 mgon |
3" / 1 mgon |
| (Standard deviation on DIN18723) |
| Dual-axis compensator |
| Method |
Liquid-electric detection, Dual-axis |
| Compensation range |
±3' |
| Setting accuracy |
±1" |
| Lumi-Guide |
| Working range |
100 m / 330 ft. |
| Positioning accuracy |
Within approx. 6 cm / 2.4 in. at 100 m / 330 ft. |
| Level vials |
| Sensitivity of plate level vial |
20" / 2 mm |
30" / 2 mm |
| Sensitivity of circular level vial |
10' / 2 mm |
| Optical plummet |
| Image |
Erect |
| Magnification |
3 x |
| Field of view |
5° |
| Focusing range |
0.5 m / 1.6 ft. to ∞
|
| Display |
| Type |
Graphic LCD (128 x 64 dot) on both sides |
| Point memory |
| Raw/coordinates |
10,000 records |
| Environmental specification |
IPx4 |
IP54 |
| Dimensions (W x D x H) (approx.) |
166 x 156 x 365 mm / 6.5 x 6.1 x 14.4 in. |
| Weight (approx.) |
| Main unit (without battery) |
4.9 kg / 10.8 lbs. |
| BC-80 clip-on battery |
0.6 kg / 1.3 lbs. |
| Plastic carrying case |
3.1 kg / 6.8 lbs. |
| Clip-on Ni-MH battery BC-80 |
| Output voltage |
7.2V DC |
| Operating time |
DTM-552
DTM-532
DTM-522 |
Approx. 10.5 hours
(continuous distance/angle measurement)
Approx. 24 hours
(distance/angle measurement every 30 seconds)
Approx. 30 hours (angle measurement) |
| NPL-522 |
Approx. 6.9 hours
(continuous distance/angle measurement)
Approx. 12 hours
(distance /angle measurement evey 30 seconds)
Approx. 25 hours (angle measurement) |
| Battery charger for BC-80/65 |
| Recharging time |
Approx. 3.0 hours for full recharge |
