Introduction and illumination meter operation
1. Illuminance meter:
An illuminance meter (or lux meter) is an instrument that specializes in measuring luminosity and brightness. Is to measure the light intensity (illuminance)
It is the degree to which the object is illuminated, that is, the ratio of the luminous flux obtained by the surface of the object to the illuminated area. An illuminance meter is usually composed of a selenium photocell or a silicon photocell and a microammeter.
2. Measuring principle:
Photovoltaic cells are photoelectric components that directly convert light energy into electrical energy. When the light hits the surface of the selenium photovoltaic cell, the incident light passes through the metal thin film 4 and reaches the interface between the semiconductor selenium layer 2 and the metal thin film 4, generating a photoelectric effect on the interface. The magnitude of the generated photocurrent has a certain proportional relationship with the illuminance on the light-receiving surface of the photocell. At this time, if an external circuit is connected, a current will flow, and the current value will be indicated on a microammeter with a scale of lux (Lx). The magnitude of the photocurrent depends on the intensity of the incident light. The illuminance meter has a shifting device, so it can measure high illuminance or low illuminance.
Types of illuminance meters cited: 1. Visual illuminance meter: inconvenient to use, low accuracy, rarely used 2. Photoelectric illuminance meter: selenium photocell illuminance meter and silicon photocell illuminance meter are commonly used.
Luxmeter CE certification
A lux meter is an instrument that measures illuminance. It is to measure the degree to which the object is illuminated, that is, the ratio of the luminous flux obtained on the surface of the object to the illuminated area.
The export of illuminance meters to the EU market requires CE certification before they can be sold in the EU market and enter the EU market for successful customs clearance.
The test standards for the CE certification application of the illuminance meter are as follows:
EN 61010-1, EN 61010-2
EMC electromagnetic compatibility test: EN61000
Documents required for the CE certification of the illuminance meter:
1. Company information: name, address, trademark, business license;
2. Product information: name, model, technical parameter list (if there are multiple models, comparison data of product series differences are required);
3. Instruction manual;
Luxmeter CE certification process:
1. Project application—submit CE certification application to Baicewei Testing Tube.
2. Document preparation—according to CE certification requirements, the enterprise prepares relevant certification documents.
3. Product testing - the enterprise sends the samples to be tested to the laboratory for testing.
4. Compile the report - the certification engineer writes the report based on the qualified test data.
5. Submit for review—the engineer will review the complete report.
6. Issuing a certificate——After the report is verified and correct, a CE certification certificate will be issued.
