Total Construction Solutions Electronic Instruction manual Theodolites ETH-302 2 sec. Angle Accuracy Detachable Tribrach ETH-305 5 sec. Angle Accuracy Detachable Tribrach ETH-310 10 sec. Angle Accuracy Detachable Tribrach ETH-320 20 sec. Angle Accuracy Detachable Tribrach PENTAX Industrial Instruments Co., Ltd. 2-5-2 Higashi-Oizumi / Nerima-ku, Tokyo 178-0063, Japan Tel. +81-3-5905-1222 / Fax +81-3-5905-1225 E-mail: international@piic.pentax.co.
Safety Precautions (must be followed) The following items are intended to prevent possible injury to the user or other people and/or damage to the instrument before it occurs. These safety precautions are important to the safe operation of this product and should be observed at all times. •Distinctive Displays The following displays are used to distinguish precautions by the degree of injury of damage that may result if the precaution is ignored.
CAUTION • • • • • • • • • Secure the handle of main unit with the handle locking screws. Failure to properly secure the handle could result in the main unit detaching from the handle while being carried, causing injury. Do not use the carrying case as a footstool as it is slippery and unstable and may cause you to fall, resulting in possible injury. When mounting the instrument to the tripod, tighten the center screw securely.
CONTENTS • 1. 1.1 1.2 1.3 1.4 • 2. 2.1 2.2 2.3 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.4 2.4.1 • 3. 3.1 3.2 3.3 3.4 3.5 3.6 • 4. 4.1 4.2 4.3 4.4 4.5 4.
CONTENTS • 5. 5.1 5.2 5.3 • 6. 6.1 6.2 6.3 6.4 6.5 6.6 6.7 • 7. 7.1 • 8.
1. General 1.1 Precautions Storing and environmental conditions • Do not use the instrument until it has adjusted to the ambient temperature. • Avoid using at a high or low temperature. The instrument may not work normally at temperatures exceeding –10 or +50˚C. • When the instrument gets wet, wipe off the water immediately and let it completely dry outside of the case. Store in the case after completely dried. • Be sure to store instrument in the case.
Transportation • Do not subject to impact or vibration during transportation. • When transporting, handle the same as ”fragile” and pack the shipping case with cushioning materials. Inspection, Adjustment and Repair, Overhaul • When not in use for extended periods of having been subjected to impact or vibration, be sure to check the instrument adjustments before using. • If there is any problem in the instrument, do not attempt to repair or you may make the problem worse.
Others • When cleaning the case or the instrument, do not use any organic solvent. The surface of plastic parts may dissolve and deformation and discoloration can occur. Wipe off the dirt with a wet cloth of dilute household detergent • Wipe off dirt on the optics with a cleaning cloth (or paper) specified for optical surfaces. • To realize full capability of the instrument, adhere to cautions described in each chapter of this manual. 1.
Unpacking and Storing Unpacking • Gently set down the carrying case so that its cover is upward. • Unlatch and open the case while pushing the latch lock. • Take the instrument out of the case. Storing • Set the telescope almost horizontal, and lightly tighten the telescope clamp screw. • Align the containing marks*, and lightly tighten the horizontal clamp screw. • Insert the instrument into the case with the containing marks* facing upward. • Close the case lid and lock the latches.
1.
Eyepiece cap Eyepiece lens Battery box Focusing knob Telescope tangent screw Plate vial Telescope clamp screw LCD panel Horizontal clamp screw Keyboard Horizontal tangent screw Circular vial 12
1.4 Preparation of Power • Remove battery box from the unit by pushing the release button on the top of the battery box. Remove the battery box cover. • Insert four AA batteries into the battery box according to (+) and (-). • Press the battery box to the leg by inserting the guide pin to the guide groove. • Confirm the correct work by pressing the power switch. This instrument can operate using 1.2V AA rechargeable batteries. • The four (4) batteries, in a battery box, should be of the same type.
2. Key Operations and Display 2.1 Display Vertical angle V=Zenith 0°, V%=Slope(VH=Horizontal 0°, Vc=Compass) Horizontal angle Battery indicator: (HR=right rotation horizontal angle, HL=left rotation horizontal angle) 2.
2.3 Function of each key 2.3.1 Power [ON/OFF] key 1 Pressing the ON/OFF key turns on the power supply and the message ”0 SET” is displayed. After the ”0 SET” of vertical angle is performed, the Horizontal and Vertical angle are displayed and the instrument enters into the angle measurement mode.
2.3.2 [V/%] key Pressing the V/% key will change the Vertical angle display to V%(slope). (At the shipping, it is set at Zenith 0°) By special key operation, horizontal 0° (VH) and Compass (Vc) can be set. (Factory default is Zenith 0°) (Refer to 3.1 Setting of vertical angle.
The error ”OVER RANGE” is displayed when the telescope exceeds 45°(100%) in the V% display mode.
2.3.3 [HOLD] key 1 Press the [HOLD] key twice in succession to hold the displayed horizontal angle and retain it. (Press once, the key buzzer will sound, then press again during the sound.) 2 Press the key once more to release. To prevent operation error, the buzzer sounds for three seconds when the [HOLD] key is pressed. HOLD is not initiated unless the key is pressed during the buzzer sound.
2.3.4 [0SET] key 1 Press the [0SET] key twice in succession to reset the displayed horizontal angle 0°,00’,00”. (Press once, the key buzzer will sound, then press again during the sound.) 2 Press the key once more to release. To prevent operation error, the buzzer sounds for three seconds when the [OSET] key is pressed. [OSET] is not initiated unless the key is pressed during the buzzer sound.
2.3.5 [R/L] key Press the [R/L] key to change from clockwise to counterclockwise rotation. A clockwise or counterclockwise reading is alternately displayed each time the key is pressed. Count horizontal angle in a right rotation direction (HR) 2 Counterclockwise horizontal angle Count horizontal angle in a left rotation direction (HL) If the power turns off during the counterclockwise mode, the display returns to a clockwise horizontal angle display when power is turned on. 1 Clockwise horizontal angle 2.
2.4 Other Functions 2.4.1 Remaining battery indicator The status of the remaining battery capacity is displayed with ” ” symbolizing the battery capacity. Battery full - operating possible Operation possible Operation still possible Get the battery ready for a stand by Replace batteries Automatic Power-off function If there is no key operation for about 30 minutes, the power supply is turned off automatically. This function can be set to NIL by special key operation. (Refer to 3.
3. Special key operations Special key operation enables selection of angle unit and other such items.
Flow of setting display Setting of vertical angle Press [R/L] key Setting of 90°buzzer Press [R/L] key Setting of correction of vertical angle Press [R/L] key Setting of angle display Press [R/L] key Setting of automatic power off function Press [R/L] key Setting of Angle unit Previous items can be displayed by pressing the [HOLD] key.
3.1 Setting of Vertical Angle Vertical angle setting display by special key operation Zenith 0° (V) Setting is switched by pressing [0SET] key Horizontal angle 0°(VH) Compass (Vc) Store with [V/%] key when the setting is decided.
3.2 Setting of 90°buzzer 90°buzzer setting display by special key operation No 90°buzzer Setting is switched by pressing [0SET] key With 90°buzzer Store with [V/%] key when the setting decided. 3.3 Setting of correction of vertical angle Correction of vertical angle setting display by special key operation Setting is switched by pressing [0SET] key Store with [V/%] key when the setting decided.
3.4 Setting of angle measurement Angle setting display by special key operation 1 For models ETH-302/305 Setting is switched by pressing [0SET] key Store with [V/%] key when the setting decided. 2 For models ETH-310 Setting is switched by pressing [0SET] key Store with [V/%] key when the setting decided. 3 For ETH-320 Setting is switched by pressing [0SET] key Store with [V/%] key when the setting decided.
3.5 Setting of automatic power off function Automatic power off function setting display by special key operation Automatic power off active Setting is switched by pressing [0SET] key Automatic power off inactive Store with [V/%] key when the setting decided. 3.6 Setting of Angle unit Setting is switched by pressing [0SET] key You can Select DEG or DEC or GRD or MIL as the unit for angle. Store with [V/%] key when the setting decide.
4. Preparation for Surveying 4.1 Setting up the instrument 1 2 3 Adjust the tripod legs so that a height suitable for surveying is obtained when the instrument is set on the tripod. A Set the tripod and fix the metal shoe firmly into the ground so that the tripod head is as level as possible and centered above the station point. If the tripod head is disturbed by the action of fixing the metal shoe into the ground, correct the level by extending or retracting each leg of the tripod.
4.2 Leveling with the Circular level After [4.1 Setting up the instrument] is completed, instrument must be leveled using the circular vial. 1 By rotating any two leveling screws, position the bubble in the center of the vial (See A.) (To adjust the screws at the same time, turn them in opposite directions.
4.3 Leveling with the Plate level After [4.2 Leveling with the circular vial] is completed, instrument must be leveled with plate vial. 1 Place the plate vial in parallel with a line joining any two of the leveling screws.
4.4 Centering with the optical plummet After [4.3 Leveling with the plate vials] is completed, the instrument must be centered above the station point. 1 2 3 4 Focus the optical plummet reticule by rotating the optical plummet eyepiece knob. Focus the station point by rotating the optical plummet focusing knob. Loosen the tripod center screw. Look through the optical plummet eyepiece, and move the instrument bottom plate until the reticule center coincides with the station point.
4.5 Eyepiece adjustment After [4.4 Centering with the optical plummet] completed, focus the telescope eyepiece on the telescope reticule. 1 Remove the telescope lens cap. 2 Point the telescope at a bright object. 3 Rotate the eyepiece completely counterclockwise. 4 Look through the eyepiece, and rotate the eyepiece clockwise until the reticule appears at its maximum sharpness.
4.6 Object sighting After [4.5 Eyepiece adjustment] is completed, sight the object. 1 Loosen the telescope clamp screw and horizontal clamp screw. 2 Point the telescope at the object using the collimator sight. 3 Tighten the telescope clamp screw and horizontal clamp screw. 4 Focus on the object by rotating the focusing ring, while looking through the telescope. 5 Accurately align the reticule with the object, using each tangent screw.
5. Measurement 5.1 Horizontal angle measurement (right) 1 2 3 4 5 Level the instrument, and after power on set the vertical angle 0 point. Sight the first object using the horizontal clamp and tangent screw as well as the telescope clamp and tangent screw. Press [0SET] twice to set the horizontal angle to 0°,00’,00” Sight the second object using the horizontal clamp and tangent screw as well as the telescope clamp and tangent screw. Read the displayed value (α).
5.2 Horizontal angle measurement (left) 1 2 3 Level the instrument, and after the power on set the vertical angle 0 point. Sight the first object using the horizontal clamp and tangent screw as well as screw as well as the telescope clamp and tangent screw. Press the [R/L] key to switch the horizontal angle display to counterclockwise reading (HL). Subsequent operation will be done as in [5.1 Horizontal angle measurement (right), but the order of collimation is reversed.
5.3 Vertical angle measurement Level the instrument, turn the power on and set the vertical angle 0 point. Sight the object A using the horizontal clamp and tangent screws as well as the telescope clamp and tangent screws. Read the displayed value ( ). • The vertical angle mode can be changed to slope percent display (V%) by pressing [V%] key. Also, horizontal 0°(VH) and compass (Vc) can be set using special key operation. (Factory setting is Zenith 0°) (Refer to 3.
6. Inspection and Adjustment 6.1 Instructions on inspection and adjustment • Inspection and adjustment should be done after setting the instrument on a tripod or on an adjustment stand. • Inspection should be done sequentially from [6.2 Plate vial] to [6.5 Perpendicularity of line of sight to horizontal axis] • Adjustments should be finished with adjustment screws having been tightened and with firm torque. Do not finish by loosening an adjustment screw.
Adjustment 1 Center the plate vial bubble. 2 Rotate the instrument 180°, move the bubble half way back to the center by operating a leveling screw which is located parallel with the plate vial. 3 Rotate the vial adjusting screw with the adjusting pin and position the bubble in the center. 4 Repeat procedure again to confirm.
6.3 Perpendicularity of circular vial to vertical axis Inspection 1 Confirm if the bubble of the circular vial is in the center after the inspection and adjustment of [6.2 Plate vial]. 2 No adjustment is necessary if the bubble of the circular vial is in the center but if not, the following adjustment is required. Adjustment 1 Move bubble to the center by rotating the bubble adjusting screws, using the adjusting pin. 2 Inspect again.
6.4 Inclination of reticule graduations Inspection 1 Set an object point A on the line of sight through the telescope. 2 Move point A to the edge of the field of view by adjusting the telescope tangent screw (point A’). 3 No adjustment is necessary if point A moves along the vertical line of the reticule. If the point A does not move along the vertical line of the reticule, it needs adjustment - Consult with your dealer.
6.5 Perpendicularity of line of sight to horizontal axis Inspection 1 Set an object (point A) at a distance of 30 to 50m away from the instrument and sight it through the telescope. 2 Loosen the telescope clamp screw and reverse the telescope around the horizontal axis. Mark a point set on the line of sight at about the same distance to the object point A, and call it point B. 3 Loosen the horizontal clamp screw, and rotate the instrument around the vertical axis. Sight point A again.
6.6 Difference of the vertical angle Inspection 1 Set the vertical angle in Zenith 0° mode 2 Sight an object (Point P) with the telescope and read the vertical angle (V correct). 3 Reverse the telescope and rotate the alidade. 4 Sight point P again in the reverse position and read the vertical angle (V reverse). 5 At this time, when (V correct + V reverse - 360°)/2 is less than 15”, it is within tolerance. If it shows a larger value, it needs adjustment - Consult your dealer.
6.7 Optical plummet Inspection 1 Place a piece of white paper, with a cross drawn on it, directly under the instrument. 2 Look through the optical plummet, and move the paper so that the intersecting point of the cross comes to the center of the field of view. 3 Adjust the leveling screws so that the center mark of the optical plummet coincides with the intersection point of the cross. 4 Rotate the instrument around the vertical axis.
7. Optional Accessories 7.1 Diagonal Eyepiece (SB14) The Diagonal eyepiece can be attached to the telescope for convenience in observing the zenith or when in confined spaces. 1 Turn the telescope eyepiece ring counterclockwise to remove the eyepiece. Be sure to hold the eyepiece, securely, so that you do not drop it. Attach the diagonal eyepiece to the telescope by reversing the procedure. The diagonal eyepiece can be rotated through 360°.
8. Specifications Telescope Magnification Effective aperture Resolving power Field of view Minimum focus distance Stadia ratio Stadia constant 30 X 45 mm 3” 1° 30’ 1.35 m 100 0 Angle Measurement Type Detection mode Incremental rotary encoder V. angle: Single H.
Vertical axis Single Sensitivity of vials Plate vial ETH-302 ETH-305 ETH-310 ETH-320 30”/2 mm 30”/2 mm 40”/2 mm 40”/2 mm Circular vial 8’ Tribrach type Detachable Optical plummet Magnification Focusing range 3x 0.5 m to Infinity Power source Type 4 x AA dry battery Operation time (Alkaline) 25 to 28 hrs. (NiMH2300mAh) 25 to 28 hrs. Water resistant IP x4 Ambient temperature - 10 °C to + 50 °C Height 215 mm Dimensions Instrument (including batteries) W168 x H330 x L158mm/4.
PENTAX PENT X Industrial Industrial Instrumen Instruments ts Co., C Lt Ltd. 2-5-2 Higashi-Oizumi Nerima-ku, Tokyo 178-0063, Japan PENTAX Industrial Tel.: Instruments +81-3-5905-1222Co., Ltd. Fax: + 81-3-5905-1225 E-mail: international@piic.pentax.co.jp PENTAX Industrial Instruments C PENTAX Industrial Instrum PENTAX Industrial In PENTAX Industria PENTAX Indust Printed in Belgium certified The CE marking assures that this product complies with the requirements of the EC directive for safety.
