Zeiss DiNi 20 Digital Level

* Zeiss DiNi 20 Digital Level [ID- X1794]
* Trimble Battery Charger w/ Power Cable
* Plumb Bob
* RS232 Interface Cable
* Rain Cover For Unit
* QTY. 3  Allen Wrenches
* Battery Pack
* Power Cord
* Hard Copy User Manual
* Hard Carrying Case

Zeiss DiNi 20 Digital level
During the last few decades, the improvements implemented in the surveying of heights have centered on two fields of application:

• the medium precision range (engineering surveys)
• the high precision range (precision levelling)

In the field of low-precision height measurement, on the other hand, laser sighting instruments are being increasingly used.

It therefore seemed appropriate to develop two digital levels for the specific requirements of the two above-mentioned fields of application by modifying the previously described measuring technique. The results of our investigation on the capabilities and versatility of the measuring technique and the graded accuracies of the measuring staffs (folding staff and invar staff) proved to be extremely helpful in achieving this goal. This was the basis for the development of the DiNi 20 for the medium accuracy range in levelling using the folding staff and of the DINi 10 for precision levelling using the invar staff. Needless to say, it is always possible to use the invar staff in combination with the DiNi 20 and the folding staff with the DiNi 10, but optimum performance with regard to measuring accuracy and measuring time is not obtained in this case. Measuring errors, however, will not occur.

To fully meet the requirements of the above-mentioned fields of application in levelling, the DiNi 10 /20 levels offer the following special features:

• high reading accuracy of the measuring staff graduation
• negligible setting error of the tilt compensators
• minimal effect of other instrument errors such as dip of horizon and shaking of the measuring image
• small measuring section on the staff, minimizing the influences of refraction close to the ground
• visual sighting to determine inadequate illumination or glare impairing the sharpness and quality of the staff image
• ease of operation with straightforward user guidance
• multiple measurement with automatic averaging
• automatic evaluation and storage of the measured data
• easy handling and precise, reliable operation during measurement
• on-line measurements via the interface for special applications
• low power consumption (one battery charge lasts for at least one working day)
• low weight and modern styling

These outstanding capabilities of the DiNi 10/20 increase the efficiency in levelling by up to 50 %.



Specifications:

Performance specifications
Accuracy	DIN 18723, standard deviation height measuring per 1 km (3280.84 ft) of double leveling
Range
Electronic measurement	1.5 m–100 m (4.92 ft–328.08 ft)
Visual measurement	from 1.3 m (4.265 ft)
Electronic measurement
Invar precision bar code staff	0.7 mm (0.002 ft)
Standard bar code staff	1.3 mm (0.004 ft)
Visual measurement	2.0 mm (0.007 ft)
Distance measurement (with a 20 m (65.62 ft) sighting distance)
Invar precision bar code staff	25 mm (0.082 ft)
Standard bar code staff	30 mm (0.098 ft)
Visual measurement	0.3 m (0.984 ft)
Horizontal Circle
Type of graduation	400 grads and 360 deg
Graduation interval	1 grad and 1 deg
Estimation to	0.1 grad and 0.1 deg
ENVIRONMENTAL
Operating temperature	–20 °C to +50 °C (–4 °F to 122 °F)
Dust- and waterproofing	IP55
GENERAL
Telescope
Aperture	40 mm (0.131 ft)
Field of view at 100 m	2.2 m (7.217 ft)
Electronic measurement field	0.3 m (0.984 ft)
Magnification	26 x
Compensator
Inclination range	±15
Setting accuracy	±0.5"
Circular level	8'/2 mm with Illumination
Display	Graphical, 240 x 160 pixels, monochrome with illumination
Keyboard	19-key alpha-numeric and 4-way arrow key for navigation\
Recording
Internal memory	up to 30 000 data lines
External memory	USB Flash Drive support
Data transfer	USB Interface for data transfer between DiNi and PC (means two way communication)
Power supply	Internal battery: Li-Ion, 7.4 V / 2.4 Ah Operating time: 3 days working time without illumination
Weight (including battery)	3.5 kg (7.72 lb)