May 08, 2026
Two-point Calibration of pH Meter (pH Meter Instrument)
Two-point Calibration of pH Meter (pH Meter Instrument) 1. Preparation work Prepare three beakers each containing 250 milliliters of purified water (to ensure c
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![Illuminance calibration of illuminometers]()
Illuminance calibration of illuminometersCalibration principle: Let Ls irradiate the photocell vertically → E=I/r2, change r to obtain the photocurrent value under different illuminance, andOct 25, 2022 -
![Understand the illuminance meter by analyzing the four-corner relationship am...]()
Understand the illuminance meter by analyzing the four-corner relationship am...In 1967, the 13th International Conference on Weights and Measures in France stipulated that candela, candela/square meter, lumens, and lux be used asOct 12, 2022 -
![Test and Analysis of Photometer Verification Device]()
Test and Analysis of Photometer Verification DeviceAnalyze and adjust the spatial straightness error of the measurement axis of the light meter verification device. The light track of the light meter vOct 11, 2022 -
![Evaluation of Uncertainty of Measured Values of Illuminance Meters in Testing...]()
Evaluation of Uncertainty of Measured Values of Illuminance Meters in Testing...Experimental measurement basis: "Measurement Uncertainty Evaluation and Representation" (JJF1059. 1-2013) Measurement environment: temperature 20 ± 10Oct 11, 2022 -
![Frequently Asked Questions about Light Meters]()
Frequently Asked Questions about Light MetersQuestion 1. How to condense the light of the LED to a point? Answer 1: This is not possible. There is a law in optics that the brightness of the imageOct 11, 2022 -
![How to choose the right illuminance meter]()
How to choose the right illuminance meterIn short, an illuminometer is an instrument for measuring illuminance. With various front-end optical signal acquisition equipment, it can measure parOct 11, 2022 -
![How the Illuminance Meter Calculates]()
How the Illuminance Meter CalculatesAverage illuminance (Eav) = luminous flux of a single lamp × number of lamps (N) × space utilization coefficient (CU) × maintenance coefficient (K) ÷Oct 11, 2022 -
![Illuminance meter measurement method]()
Illuminance meter measurement method◆Turn on the power. ◆Choose the suitable measurement gear. ◆Open the photodetector head cover and place the photodetector in the horizontal position oOct 11, 2022 -
![Illuminance Meter Maintenance Matters]()
Illuminance Meter Maintenance Matters1. Do not measure in high temperature or high temperature places. 2. The photodetector should be kept clean during use. 3. The light source test referOct 11, 2022 -
![An ideal illuminance meter should have the following conditions:]()
An ideal illuminance meter should have the following conditions:1. Small size and light weight Opportunities for illuminometers to be used are very extensive, and the timing of application is often in different plaOct 11, 2022 -
![The structure principle of lux light meter]()
The structure principle of lux light meterThe illuminance meter is composed of a photometric head (also known as a light-receiving probe, including a receiver, a V(λ) pair filter, and a cosineOct 11, 2022 -
![The importance of lux dlight meters]()
The importance of lux dlight metersIllumination is closely related to people's lives. Sufficient light can prevent people from accidents. On the contrary, too dim light can cause humanOct 11, 2022 -
![Calibration of the Illuminance Meter]()
Calibration of the Illuminance MeterCalibration principle: Let Ls irradiate the photocell vertically → E=I/r2, change r to obtain the photocurrent value under different illuminance, andOct 11, 2022 -
![Types of Illuminance Meters]()
Types of Illuminance Meters1. Visual illuminance meter: it is inconvenient to use, the accuracy is not high, and it is rarely used; 2. Photoelectric illuminance meter: commonlyOct 11, 2022 -
![Indicator requirements for illuminance meters]()
Indicator requirements for illuminance meters1. Small size and light weight (Compact Size, Light Weight) Opportunities for illuminometers to be used are very extensive, and the timing of applicatOct 11, 2022 -
![Operation steps of lux light meter]()
Operation steps of lux light meter①Turn on the power. ②Open the photodetector cover and measure the position of the photodetector horizontally. ③Choose the suitable measurement gear. IOct 11, 2022 -
![Scope of application of Lux light meter]()
Scope of application of Lux light meter1. Application in general public places In order to ensure that people can live in suitable light, sanitary standards for indoor (including public plaOct 11, 2022 -
![Precautions for using illuminometer]()
Precautions for using illuminometer① It is necessary to check whether the battery and the conformity label are within the validity period. ②The light receiver of the illuminometer mustOct 10, 2022 -
![Precautions for the use of digital illuminance meters]()
Precautions for the use of digital illuminance meters1. Do not measure in high temperature and high temperature places. 2. The light detector needs to be kept clean. 3. The reference level of the light sOct 10, 2022 -
![Measurement method of digital illuminance meter]()
Measurement method of digital illuminance meter1. Turn on the power. Select the appropriate measurement gear. 3. Open the light detection cover and align the front of the light detector with the liOct 10, 2022
