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The use of headlight tester
First, the preparation of the test
1, the preparation of the tester
(1) in the headlight tester is not subject to the state of the light, check the photometer and the optical axis deflection indicator gauge indicator can be aligned with the mechanical zero point. If the indicator is out of alignment, the zero point adjustment screw can be used to adjust it on the zero point.
(2) Check the spotlight lens and reflector mirror surface with or without dirt or blurred places. If there is, use a soft cloth or lens paper, etc. to wipe clean.
(3) Check the technical condition of the level. If there is no bubble in the level, it should be repaired; if the bubble is not in the red line box, the level adjuster or shim can be used to adjust.
(4) Check whether the guide rail is stained with dirt or small stones and other debris. Sweep clean when there are debris.
2. Preparation of the vehicle
(1) Remove the oil on the headlight.
(2) Tire pressure should be in line with the provisions of the car manufacturer.
(3) The car battery should be in a state of sufficient pads. TOP
Second, the automatic tracking light axis type headlight inspection instrument inspection method
1, the car as far as possible with the guide rail to maintain a perpendicular direction close to the inspection instrument, so that the headlights and the inspection instrument receivers are separated by 3m.
2, will be the vehicle to correctly find a device to make the inspection instrument and the car is correct.
3, turn on the headlights, turn on the power of the inspection instrument, with up and down, left and right control switches to move the position of the inspection instrument, so that the headlight beam to the light receiver.
4, press the measurement switch, the light receiver can be traced to the front light axis, according to the light axis deflection indicator (marked with a scale) and the photometer's indication value, you can measure and luminous intensity.
If you need to adjust the amount of light axis deflection, you can adjust the direction of the headlights, while observing the light axis deflection indicator, so that the indicators back to the specified range can be.
The following is an example of fully automatic headlight tester, its application in the automatic inspection line is discussed.
First of all, in order to avoid external light shadow machine headlight tester should be arranged in the middle of the automatic inspection line station. In order to ensure that the front lighting light axis and the instrument receiving the perpendicularity of the light surface, in front of the detector should be appropriate lead line. In order to ensure that the detection distance of 3m, in front of the detector should be set up in the car position control devices, such as photoelectric detection devices. Instrument rails and optical receiver box, must be installed correctly according to the requirements of the instruction manual.
The interface signal of the detector has two types: analog signal and switching signal. The analog signal has luminous intensity signal, optical axis up and down deflection angle and left and right deflection angle signal. Among them, the luminous intensity signal is 0-5V, and the optical axis angle signal is -2.5-+2.5V, which are adopted from their respective indicator circuits, and their amplitudes can be adjusted by the corresponding output voltage adjustment potentiometers. The switching signals are used to control the instrument to quickly enter or exit the measurement position, as well as to provide the instrument in the light area and enter the optical axis auto-tracking state to detect the tracking signal and the alignment of the optical axis when the automatic sampling signal.
The signals that control the movement of the instrument and the optical receiver box come from three different sources, as shown in Figure 10. One is the movement trigger signal from the manual control box; the second is the optical axis tracking signal from the motor steering control board; and the third is the control signal from the computer. Therefore, the computer control should be deactivated during manual operation. To avoid accidents, the control box can be removed during normal operation of the instrument. In order to reduce the interference of external signals on the computer, usually between the computer and the instrument must be added isolation circuit.
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When the instrument enters the light zone, it should start the auto-tracking state of the optical axis, so the manual control and computer control must be removed, that is, release the manual switch and cut off the intermediary relay JU, and turn to control the circuitry to drive the power relay J4. Therefore, in the computer control, it is necessary to sample and process the The tracking signal must be detected and processed during computer control.
In order to collect the analog signals output from the instrument (light intensity and light axis angle), the computer must be configured with an A/D converter circuit, which must be configured with at least three analog channels, a 0-5V channel for sampling the luminous intensity, and two 2.5V channels for sampling the light axis angle signal. In accordance with the instrument luminous intensity of the measurement range of 0-4000Ocd requirements, A/D resolution should reach 2-16, that is, the use of 16-bit A/D converter, the cost is higher. Taking into account the instrument's error of ± 15%, that is, ± 600Ocd of the actual situation, can be used 10-bit A/D converter, the resolution of:
40000/210 = 40cd "6000cd
As the conversion error of the A/D converter is generally ± 1-1.5LSB. so its impact on the instrument's measurement accuracy of only 1% is permissible.
In the maintenance of the instrument, it is recommended to calibrate the instrument every three months to improve the maintenance level. Calibration of the computer can be collected during the calibration of the instrument calibration of the qualified area of information, as the basis for discrimination in the detection. Calibration should be carried out in accordance with the methods specified in the instruction manual. In the process of using the instrument, attention should be paid to maintaining the lubrication of the transmission components, guide and light receiving box front glass should be kept clean, and regularly clean the spotlight lens, when the instrument failure should be eliminated in a timely manner, if the troubleshooting will affect the accuracy of the measurement, it is necessary to rule out the fault, the instrument must be adjusted to the calibration.
Common troubleshooting examples are as follows:
(1) The instrument can not act. Check whether the power supply is connected.
(2) The instrument cannot move in a certain direction. Check whether the limit switch of the direction is damaged, thus generating the wrong limit signal; check whether the path of the direction of movement signal is blocked; whether the output of the steering control circuit board is normal; whether the brake is released; whether the starting capacitor of the motor is invalid, etc.
(1) The instrument cannot move in a certain direction.
(3) The end position of the instrument is not correct. Check whether the limit switch is damaged, whether the limit gear block is loose or improperly installed position.
(4) Jitter during the movement of the instrument should be checked on the signaling path of the relays are not in good contact, or whether the connectors are loose.
(5) Indicator indicator failure. Check whether the output of the indicator circuit is normal; whether the power supply is normal; whether the displacement sensor action is normal; whether the output of the photocell is normal; whether the light surface is clean.
In the computer-controlled environment, generally should first determine the cause of the failure is caused by the instrument itself, or the computer signal anomaly, for this reason, the manual control box can be used to operate the instrument to help diagnosis. If the instrument malfunction should also be ruled out human factors, such as whether there is a violation of the operating procedures of the wrong operation, the cable has no mechanical damage or misconnection. Each adjusting potentiometer of the instrument should be used by a person in charge of calibrating the instrument, and should not be adjusted arbitrarily. If the fault belongs to the circuit board, it is generally appropriate to replace the unit circuit.
In order to improve the level of maintenance of the instrument, the user should also establish the maintenance of the instrument files and develop a good maintenance system. TOP
Third, the test notes
1, the base of the test instrument must be kept horizontal;
2, the test instrument should not be subject to the influence of external light;
3, must be in the car to keep unloaded and ride a driver in the state of testing;
2, the test instrument should not be subject to the influence of external light;
3, must be kept empty and ride 1 A driver in the state of detection;
4, the car has four headlights, be sure to cover the auxiliary lighting before measurement;
5, turn on the headlights to irradiate the photoreceptor, be sure to stabilize the sensitivity of the photocells and then test;
6, when the instrument is not in use, use a cover to cover the photoreceptor.
I hope my answer can help you.
The headlight detector is used to detect the motor vehicle headlights whatDetails please go to Suihua Rongzhan Buick 4S store
Screen-type headlight detector projection-type headlight detector automatic tracking light axis type detector automatic headlight detector principle of these instruments manuals have the right
headlight detector instrument detection headlights, why must make the instrument and the vehicle being inspected squarely. 2012-03-07 18:36 qiche1004 | Categories: Engineering & Technology Science I'll help him answer Share this:
From the basic concept of measurement, the key to measurement is the benchmark. If the benchmark is not right, it will miss a tiny bit, and the result of the measurement will definitely be wrong. So the automatic tracking type automobile headlight tester verification, first of all, for the calibration of the calibration light source must be placed in the correct position. According to national regulations, is to automobile headlight tester walking guide
Motor vehicle headlight tester has a variety of specifications: manual type economic SV-D1T indicator SV-D5T digital tube display SV-100C automatic SV-200A double lamp automatic SV-300A automatic special lamp. To see exactly which one is suitable for your actual needs, according to your budget and the use of site measurement accuracy to choose.
With the headlight tester test headlights, why must make the instrument and the car being tested on the right I to help him answer Share to: Know Daily Past Review Login Do not have a Baidu account? Register Now
pdi battery tester usageGY3121A battery resistance tester, battery as a key component of the power system, must be tested and maintained every year, every quarter or even every month, and need to analyze its test data regularly. However, at present, the domestic industry, due to the lack of advanced and effective instrumentation, resulting in many problems encountered in the process of testing and data analysis of the power supply maintenance personnel headaches. The newly launched conductivity tester is a new generation of conductivity tester developed by our company. This series of instruments inherited the advantages of the previous generations of models, and in the test of anti-interference, host seismicity, menu humanization and other aspects have been significantly improved.
Operation Methods:
1. Press the power switch to display the main menu:
2.
3. Lead number setting:
You can set the lead number of the new battery pack and the original battery pack and start the test.
4. Data management
View the test results, and can query or delete the test results.
5. Test Operation
5.1 Setting Leads
5.1.1 Select Leads Setting in the main menu, press OK to enter the Leads Setting interface:
If it is the first time to test a certain group of batteries, use the New Battery in the Leads Setting menu to create a new battery group, create the name of the battery group, and select the corresponding leads, and if you don't select the leads, the tester will automatically use the preset leads during the test. If you do not select a lead number, the tester will automatically use the preset lead number for testing.
5.1.2 Setting the number of cells in a battery pack (the number of cells in the pack) The meter presets the number of cells in the pack to 24, and the maximum number can be set to 500.
5.1.3 Setting the test program Tap the edit window after "Test Program" to enter the test program selection interface, and select the corresponding error removal program.
5.2 Connecting Instructions
Determine the test mode before connecting the test cable to the battery to ensure the consistency and smoothness of the whole test process.
After selecting the test program, be sure to determine the positive and negative battery terminals, and place the red clip on the positive battery terminal and the black clip on the negative battery terminal.
5.3 Testing the Battery
After selecting the test program, you will enter the test interface, connect the battery, and after a few seconds of waiting, you will get the relevant battery leads.
During the test, if you need to re-measure the battery, press the "Back" button, and then select the program you want to test, the meter will re-measure the battery according to the most recent lead time, and overwrite the previous test value. If you want to store the lead time of the tested battery, please click "Data Storage". You can see the stored data in "Data Management".
5.4 Data Query
Select Data Management from the main menu to enter the Query Catalog interface
View the different information stored by tapping Previous and Next.
Automatic headlight tester inspection, pilot operation
Tianjin Sheng Wei Technology for your answer:
SV-D6T-A full self-lighting tester for the lamp height of higher agricultural and construction machinery well for light detection and error, the specific principle of operation and operating steps please refer to the annex.
I hope this can help you.
How to use the action type gas detector
Considering the operation simplicity, the single gas detector usually has only one button, and the multi-gas detector is mostly three buttons. For the sake of workers' actual operation, the button design is larger, wearing gloves can also be easily operated.
The readability of the screen is also an important factor, the display size of the wide preferred display technology if the use of LCD, than the LED more flexible and clear. The newest model from Methven, the Skyhawk 5, even has an optional color screen, and the Skyhawk 4X has a glow-in-the-dark enclosure, which is easy to use in confined spaces or other poorly lit areas.
How to use the Dog Nose Detector in detail?Dog nose detector that formaldehyde detector, the use of its methods: direct measurement, sampling measurement, continuous measurement of these three, the specific use of the following.
I. Direct Measurement
Sensor box inserted into the host unit for a single measurement
The host unit is inserted into the sensor box for a single 30-minute or 1-hour measurement in direct measurement mode (longer sampling time provides slightly better results).
Characteristics: Easy to operate, but only one measurement point can be taken per inspection, which is time consuming.
II. Sample Measurement
The sensor box is used separately as a passive sampler and the results are read out by the host unit.
The sensor itself can be used as a passive sampler. No fan or pump is required. The change in relative colorimetric absorbance that occurs in the sensor is read by the host unit before and after sampling and converted to formaldehyde concentration.
Characteristics: Highly efficient for simultaneous multi-point detection. However, multiple sensor cartridges must be used at the same time.
Third, continuous measurement
The host unit is inserted into the sensor box for continuous long-term monitoring of formaldehyde gas concentration.
The host unit reads the change in absorbance every 30 minutes and stores it for continuous reading (or until the sensor is saturated).
Characteristics: Long-term continuous monitoring, multiple continuous monitoring values can be obtained at the same measurement point, and the changes in formaldehyde gas concentration over time can be derived. In order to carry out multi-point continuous monitoring at the same time, must be equipped with more than one host and sensor box at the same time.
How to use combustible gas detector?Combustible gas detector, is a combustible gas detector is a single or multiple combustible gas concentration response detector. Combustible gas detector has catalytic type, infrared optical type two types. Catalytic type combustible gas detector is the use of refractory metal platinum wire heated resistance change to determine the combustible gas concentration. When the combustible gas into the detector, in the platinum wire surface oxidation reaction (flameless combustion), the heat generated by the platinum wire temperature, and the platinum wire resistivity will change.
1, combustible gas detector is installed in industrial and civil buildings is used for single or multiple combustible gas concentration response detector. Daily use of the most combustible gas detector is catalytic combustible gas detector and semiconductor combustible gas detector two types. Restaurants, hotels, home production room using gas, natural gas, liquefied petroleum gas places mainly use semiconductor-type combustible gas detector, the distribution of combustible gases, combustible vapors of industrial places mainly use catalytic combustible gas detector.
2, catalytic combustible gas detector is the use of refractory metal platinum wire heated resistance changes to determine the concentration of combustible gases. When the combustible gas into the detector, the platinum wire surface oxidation reaction (flameless combustion), the heat generated by the platinum wire temperature increases, and the resistivity of the platinum wire changes, so when encountered at high temperatures and other factors when the temperature of the platinum wire changes, the resistivity of the platinum wire changes, the detection of the information will also change.
3, semiconductor-type combustible gas detector is the use of semiconductor surface resistance changes to determine the concentration of combustible gases. Semiconductor combustible gas detector with high sensitivity gas-sensitive semiconductor components, it is in the working state, encountered a combustible gas, the semiconductor resistance decline, the decline in value and the concentration of combustible gases have a corresponding relationship.
4, combustible gas detector by the detection and detection of two parts of the composition, with detection and detection functions. Combustible gas detector detection part of the principle is that the instrument's sensor using detection elements and fixed resistance and zero potentiometer constitute a detection bridge. Bridge to the platinum wire as a carrier catalytic element, the platinum wire temperature rises to the operating temperature after power, the air to natural diffusion or other ways to reach the surface of the element. When there is no combustible gas in the air, the output of the bridge is zero, when the air contains combustible gases and diffuse to the detection element, due to the catalytic effect of flameless combustion, so that the temperature of the detection element rises, the platinum wire resistance increases, so that the bridge is out of balance, so that there is a voltage signal output, the size of this voltage is directly proportional to the concentration of combustible gases, signal amplification, analog-to-digital converter, through the liquid display to show the The signal is amplified and converted to analog-digital, and the concentration of combustible gas is displayed on the liquid display. Detection part of the principle is that when the measured flammable gas concentration exceeds the limit value, after amplification of the bridge output voltage and circuit detection of the set voltage, through the voltage comparator, square wave generator outputs a set of square wave signals to control the sound, light detection circuit, the buzzer occurs continuously sound, light-emitting diode flashes, issued by the detection signal. From the principle of combustible gas detector can be seen if there is electromagnetic interference will affect the detection of signals, data deviation; if there is a collision, vibration and thus cause the device will now detect the failure; if the environment is too humid or the device into the water, but also may cause the combustible gas detector short-circuit, or the line resistance value changes, the detection failure.
The use of this is very simple, the power on the detection, to reach the alarm point will issue a beep. The specific method of use is to open the brand and model of the combustible gas detector you are using.
Is it difficult to use GLFore's Bearing Fault Detector?Actually quite simple, anyway, I think it is quite good
Methane detector usage ! Specific coyWhich one
Product Name: Formaldehyde Detector
Model No.: DR70C-CH2O
● Explosion-proof grade ExdⅡCT6
● High precision, long life electrochemical formaldehyde sensor
● Automatic temperature compensation, zero, full scale drift compensation
● Anti High concentration of Automatic protection against high concentration gas shock
● Full software calibration function, users can also calibrate their own, with 3 buttons, easy to operate
● 2-wire 4-20mA output
● Two cable inlet ports, convenient for on-site installation
● Independent gas chamber structure, easy to replace the sensor
● Formaldehyde detector detector applications Formaldehyde concentration detection, can be accurately formaldehyde content detection, the use of electrochemical formaldehyde sensor, with a stable signal, sensitivity and accuracy of the advantages of high, widely used in furniture, flooring, tablecloths, paints, horticulture, indoor decoration and refurbishment, dyestuffs, papermaking, pharmaceuticals, medical care, food, antiseptic, disinfectant, fertilizers, resins, adhesives and pesticides, raw materials, samples, processes, and farms, garbage treatment plants, perm sites, production and marketing. Quantitative determination of formaldehyde in treatment plants, perm places, production workshops and living places
Technical specifications:
Detecting gas: Formaldehyde in the air
Detecting principle: Electrochemical principle, wall-mounted, pipeline mounting, thread size: M40 X 1.5mm
Detecting method: Fixed, in-line detection, diffusion measurement
Measuring range: 0-10ppm, 50ppm, 100ppm, 500ppm, 1000ppm
Resolution: 0.001ppm, 0.01ppm, 0.1ppm
Accuracy: ±3%FS
Display: LCD (optional)
Response time: ≤30sec
< p> Recovery time: ≤ 60 secondsExplosion-proof mark: ExdⅡCT6
Explosion-proof connecting thread: 3/4 "NPT
Signal output: 4～20mA two-wire standard current (maximum load 1500 ohm)
Maximum transmission distance: 1100 meters (2.5mm2 copper core cable)
Operating temperature: -20℃～+50℃
Relative humidity: 10%～95%RH (non-condensing)
Power supply: 24VDC±12VDC
Maximum power consumption: 2.5W
Weight: about 1.5Kg
The way of use is different in each family, there are complicated and simple to use, and ours is very simple. Just need to turn on the automatic detection, like a cell phone, very convenient. Worcester's.