Product Manual

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DET-2 Theodolite
User Guide
•
CONTENTS
Cautions ............................................................................................. 3
Usage and applications of the instrument ........................................... 4
Specifications ...................................................................................... 5
Nomenclature ..................................................................................... 6
Functions of buttons ........................................................................... 8
Preparation before measurement ......................................................... 9
Battery installation .............................................................................. 9
Recharging of battery ........................................................................ 10
Eyepiece and telescope focusing ........................................................ 11
Parameter settings ............................................................................ 11
Centering and leveling with optical plummet ................................... 14
Operation ......................................................................................... 16
Inspection ......................................................................................... 22
Accessories ........................................................................................ 28
Error codes ........................................................................................ 29
CAUTIONS
Carefully read and understand this User Guide before use.
Avoid eye injury. Do not aim the telescope at the sun.
The instrument should be protected from hard shock.
Do not carry a tripod mounted instrument on your shoulder.
Avoid sudden changes in temperature. Sudden changes in temperature will influence the
precision of measurement, will effect the operation of the electronic system, and will cause
condensation on the objective lens. When the instrument is taken from the cold weather
outdoor to indoor, it must be placed in a warm dry place to allow condensation to
evaporate.
This instrument contains sensitive electronic components that are protected against dust
and moisture. Dust or moisture inside the instrument will cause damage. After using in a
humid environment, the instrument must be dried immediately and stored in a dry
instrument case.
The LCD will respond slowly in low temperatures.
To prevent battery leakage, please remove
the battery pack if the instrument will be
stored for an extended length of time.
Before placing the instrument into the
instrument case, align the dot marks on the
instrument and lightly tighten the clamp
knobs. Place the instrument in the case
with dots facing upwards. Loosen clamps
after the instrument is in the case and
insure instrument is properly seated.
Slightly tighten clamps after instrument is
fully seated.
USAGE AND APPLICATIONS OF THE INSTRUMENT
This electronic theodolite utilizes the photoelectric incremental angle measuring system.
The precision of angle measurement is 2”. It integrates optical, mechanical, electronic and
computer technologies for a variety of functions including angle measurement, display and
storage. It displays horizontal and vertical angles and makes conversions from vertical angle
to percent. The vertical angle measurement is also compensated.
The theodolite can be used in a variety of applications including measurement in railway,
highway, bridge, water projects, etc. It can be also used in various construction applications
including orientation of large equipment, topographic survey, and various kinds of
construction measurements.
SPECIFICATIONS
Handle
Screw
Handle
Objective Lens
LCD Display I
Optical Plummet
Horizontal Clamp /
Fine Motion Screw
Leveling Screw
Tribrach
Locking Lever
Focusing
Ring
Battery Case
Eyepiece
Collimator
Telescope Clamp /
Fine Motion Screw
Tubular Vial
LCD Display II
Circular Vial
Button Primary Function Other
ON/OFF
Turns the
instrument
ON/OFF
1. Function button for entering into instrument setup.
2. Function button for entering into index error setting.
3. Function button for entering into compensation setting.
Button for lighting of reticule and LCD
0SET
Reset of
horizontal angle
(zeroing)
1. Menu selection button in Instrument Setup.
2. Function button for entering into Compensator setting.
3. Function button for input while in Instrument Setup.
HOLD
Horizontal
angle Hold
Button
1. Menu selection button in Instrument Setup.
2. Function button for entering while in Instrument Setup.
3. Function button for entering into index error setting.
R/L
Increment of
left rotation and
right rotation of
horizontal angle.
1. Menu selection button in Instrument Setup.
2. Function button for input while in Instrument Setup.
V%
Vertical angle
and slope
convert
1. Function button for input while in Instrument Setup.
2. Button for confirmation after initial Setup
PREPARATION BEFORE MEASUREMENT
Power Options
The theodolite has two power options: Disposable and rechargeable batteries. The
rechargeable batteries are supplied in a sealed pack. The disposable batteries are inside a
similar shaped pack with a sliding door.
To remove the pack, turn the knob until the mark “▼” points to [UNLOCK], then
remove the battery pack.
To insert battery pack, place the raised bottom part of the battery case into the slot in the
theodolite.
Push the top of the battery case in place. Turn the knob until the mark “▼” points to
[LOCK].
To Install Alkaline Batteries into the Disposable Battery Pack, open the battery pack cover,
insert four AA alkaline batteries into the battery case according to the (+) and (-).
Telescope
Image Erect
Magnification 30x
Aperture 45 mm (1.7 in)
Angle of view 1˚ 30’
Shortest distance 1.35 m (4.43 ft)
Stadia constant 100
Resolution 3”
Angle
Measuring
System
Angle measurement Incremental
Min. Reading 1” or 5”
Detection method H. Both sides, V. Single side
Precision 2”
Unit of angle Deg / mil / gon / V %
Display LCD both sides
Tilt
Sensor
Automatic Compensation Yes
Range of compensation +/-3’
Optical
Plummet
Image Erect
Magnification 3X
Angle of view 5˚
Focusing range 0.5 m ~ ∞ (1.6 ft ~ ∞)
Reticle type Crosshair
Vials
Tubular vial 30”/2 mm
Circular vial 8’/2 mm
Range Temperature -20˚C to +50˚C (-4˚F to +122˚F)
Power
Battery type 4xAA alkaline or NiMH Pack
Voltage 4.8
Battery Life 36 hours - alkaline
Dust / Water
Protection
IP54
Weight 4.5 kg (9.9 lbs)
Size
164x154x340 mm (6.4x6.1x13.4)
Warranty
1 Year
Recharging the battery
Connect the charger to the AC power source. The green light on the charger will light.
Connect the plug of the charger to the charging port of the battery pack. The green light
of the charger will turn red indicating the charging process has started. After 3-4 hours the
red light turns green indicating that the batteries are charged.
Caution: Do not charge Alkaline Batteries, severe damage can happen to the battery pack
or charger.
Attention: Turn off the instrument’s power before removing the battery pack.
EYEPIECE AND TELESCOPE FOCUSING
Adjustment of Eyepiece
Direct the telescope to a bright background. Turn the eyepiece ring so that the crosshairs
of the reticule are clearly seen.
Elimination of Optical Parallax
Adjust the focusing ring to clearly see an object on the reticule. Move your eyes up and
down to see if the image of the object moves relative to the graduation lines. If it does not
move, there is no optical parallax; otherwise turn the focusing ring to eliminate the optical
parallax.
Parameter Settings
Please enter all desired initial settings prior to the first measurement.
Items in bold indicate factory settings.
Initial Setting Selection
1. Unit of Angle
360
˚ / 400G / 6400
Unit A / Unit B / Unit C
2. Zenith Angle ZEN = = 0 / ZEN = = 90
3. Auto Power Off Time 30 OFF / NO OFF
4. Min. Display dsp1 / dsp5
5. Tilt Sensor Switch TILT ON / TILT OFF
6. Indication of Horizontal
Angle Position
No Beep / 90
˚ Beep
Changing Parameter Settings
Press and hold [HOLD] button + [0SET] button and press [ON/OFF] button. Release
[ON/OFF) button when the full character display appears and release [HOLD] + [0SET]
buttons when four beeps are heard. The instrument enters into its initial setup mode and
the LCD displays:
360˚ ´ ˝
UNIT A
• Press [►] button or [◄] button to change screens for selecting options.
• Press [▲] button for selecting specific content in the options.
• Finally, press [V / %] button to confirm and enter into angle measuring mode.
Unit of Angle
• UNIT A: 360˚ (Degree)
• UNIT B: 400 (GON)
• UNIT C: 6400 (Mil)
360˚ ´ ˝
UNIT A
Zero Position of Vertical Angle
• ZEN == 0 : Zenith is 0°
• ZEN == 90 : Zenith is 90°
ZEN==90
VERTICAL
Auto Power Off Time
• NO OFF: Auto power off disabled
• 30 OFF: Turns power off if inactive
for 30 min
NO OFF
AUTO OFF
Minimum Display
• DSP 1: Minimum display is 1”
• DSP 5: Minimum display is 5”
DSP 1
Setting of Tilt Sensor
• V TILT ON: Turn on the tilt sensor
• V TILT OFF: Turn off the tilt sensor
TILT ON
Indication of Horizontal Angle
• NO BEEP: Horizontal angle indication
disabled
• 90 BEEP: Sounds beep when the
instrument is close to 0˚, 90°, 180˚ and 270°.
NO BEEP
Centering and Leveling with Optical Plummet
• Extend the tripod legs to a suitable working height with equal length legs. Spread the
tripod legs and make the tripod head as level as possible while at the same time placing the
center of the tripod head directly over the ground point. Press the leg feet firmly into the
ground and make sure the tripod legs are locked.
• Set the instrument carefully on the center of the tripod head orientating the leveling
screws centered with each tripod leg. Attach the instrument to the tripod. Make sure the
center mark is visible on all three leveling screws (this ensures a complete leveling range).
• Adjust the Optical Plummet Eyepiece to focus the crosshairs. Adjust the Optical
Plummet telescope focus to see the ground clearly. If you can not see the ground point
while looking through the optical plummet, carefully lift two of the tripods legs, then
pivot on the third leg, carefully moving the tripod until the ground point is within one
inch of the reticule. Press the two tripod feet back into the ground and recheck the optical
plummet alignment. Repeat if necessary until the ground point can be seen in the optical
plummet field. Complete the alignment by turning the leveling screws (you will not be
level but you are pointed correctly).
A
1
2
B
C
A
B
C
Centering and Leveling with Optical Plummet
• Now center the instruments Circular Vial by carefully extending or shortening the tripod
leg closest to the bubble. Caution: Use only two legs. Repeat until alignment is within 6
mm
(¼ inch) or better.
• Next use the Tubular Vial to accurately level the instrument. Unlock and turn the
instrument so that the tubular vial is parallel to BC, any two leveling screws. Note the
direction to turn the leveling screws in the graphic. When turning the two screws, adjust
them equally. The bubble will move in the direction that your left thumb turns. To move
the bubble to the right, turn the B leveling screw in and simultaneously turn the C leveling
screw in. To move the bubble left, move both screws out simultaneously. Once centered
turn the instrument 90˚ over A leveling screw and turn screw A in or out until bubble is
centered. Go back to the first position BC, and repeat until the bubble is centered in both
positions. Then from position BC turn 180˚ to check the adjustment. If the bubble stays
centered or within ¼ division, you are leveled.
• Now, check the ground point centering. If you are not directly on the point, carefully
loosen the tripod fastener and move the instrument on the tripod head in an x - y
direction. Do not rotate the instrument. Recheck leveling and repeat until instruments is
level and over the ground point at the same time. With practice, this becomes easier.
1 2
Center mark
Ground Point