Golf and hunting distance meter customized cheap professional outdoor 1000m electronic measurement laser rangefinder
Laser rangefinder is a combination of ordinary monocular and laser rangefinder. It can measure distance, speed, angle and height while inspection.
* Laser type: 905nm
*Range error:±0.5m (±0.2%)
* Range of ranges:5-700/1000/1200
*Hitomi distance: 16mm
*Operating temperature: -20~50℃
*Exit pupil diameter: 3.8mm
*Battery type: CR2-3V
Packaging & Shipping
One unit packaging dimension / weight: 145*115*65mm/410g
Standard QTY per export carton: 10PCS
Standard export carton size: 44.5*25*16.5cm
Standard export carton weight: 4.5Kg
Laser range finder manufacturers tell you about problems with range finders
Now using a laser rangefinder could easily measure distance, don't need you to take circle feet to calculate, we measured the distance is a good helper, henan zhengzhou manufacturer of laser rangefinder remind laser rangefinder various brand can according to your budget and actual use, to determine the laser range finder, domestic price cheap, but the performance stability is poorer than a imports, imports of laser range finder are relatively mature, but the price is much higher than domestic, and after a domestic is complicated. So what problems do we encounter in using laser rangefinder? Zhengzhou Defy laser rangefinder manufacturer listed several common problems.
What is the principle of using infrared ranging or laser ranging?
The ranging principle can be basically reduced to measuring the time required for light to travel to and from the target, and then calculate the distance D through the light speed c =299792458m/s and atmospheric refraction coefficient n.Because it is difficult to measure time directly, the phase of continuous wave is usually measured.Of course, there are impulse rangefinders, typically the WILD di-3000.It should be noted that phase measurement is not to measure the infrared or laser phase, but measure the modulation of the signal phase above the infrared or laser.The construction industry has a hand-held laser rangefinder for measuring houses that works in the same way.
Must the plane of the object be perpendicular to the light ray?
Usually precise ranging needs total reflection prism, and the house measurement of the rangefinder, the direct reflection of the wall to measure, mainly because the distance is relatively close, light reflected back the signal strength is large enough.With this you can know, must be vertical, otherwise the return signal is too weak to get the exact distance.
Is it ok if the measured object plane is diffuse reflection?
It is usually possible to use thin plastic sheets as reflective surfaces in practical projects to solve the serious problem of diffuse reflection.
Ultrasonic ranging and laser ranging differences?
Ultrasonic ranging accuracy is relatively low, now rarely used.The accuracy of laser rangefinder can reach 1 mm, suitable for all kinds of high precision measurement purposes.
Detailed explanation of the operation method of laser rangefinder
Laser rangefinder usually USES two methods to measure distance: pulse method and phase method.
The pulse rangefinder works like this: the laser emitted by the rangefinder is reflected from the measured object and then received by the rangefinder, which records the time of the laser's reciprocation.Half the product of the speed of light and the time to return is the distance between the rangefinder and the object being measured.
The accuracy of measuring distance by pulse method is generally about +/-1 meter.Other, the blind area of this kind of rangefinder is about 15 meters.
How to use the rangefinder:
Firstly, arrange theodolite on the station, center and level it, place the main equipment of the rangefinder on the theodolite bracket, lock it with the fixing screw of the coupling, insert the battery into the bottom of the main engine and fasten it.Arrange the reflector at the policy point, center, level, and point the mirror toward the host.
Aim the center of the board with the cross thread of theodolite, and measure the perpendicular Angle alpha.Together, observe and record temperature and barometer readings.To observe the vertical Angle, air temperature and air pressure, the purpose is to correct the tilt, temperature and air pressure of the distance measured by the rangefinder, so as to get the correct horizontal distance.
Press the "PWR" key on the power supply to start the machine, the host will self-check and flash the original set temperature, pressure and prism constant value, and the self-check will flash "good" in the future.
To correct the set value, press "TPC" and enter the temperature, pressure or prism constant (usually through "ENT" key and digital key).In general, just use the same kind of reflector, the prism constant is the same, and the temperature and pressure may be different for each observation, which needs to be set from scratch.
Adjust the hand wheel (or theodolite horizontal fretting screw) and the pitch fretting screw of the main engine by scheduling the altimeter axis, so that the rangefinder telescope can accurately aim at the prism center. n the case of flashing "good", accurate aiming can also be judged according to the sound and motion of the buzzer. The stronger the signal is, the bigger the movement and motion is. The micro-moving rangefinder from left to right makes the maximum movement and motion of the buzzer.
Application field of laser rangefinder
Laser rangefinders are now widely used in the following fields: electricity, water conservancy, communications, environment, architecture, geology, police, fire, blasting, Marine, railway, counter-terrorism/military, agriculture, forestry, real estate, leisure/field sports, etc.