Figure 14 the call specification fo-meter with a diode array detector's signal. Section 5.3.5 notes and variable signal output (recorder and processor)Serve as a signal amplifier and signal processing performance, came out in a log scale.(log scale)5.4 types of measuring instruments to absorb light.5.4.1 single-beam type (single beam type) using the same beam measuring beam for reference substances (reference or a blank) and sample (sample) saengkratham intensity measurements by adjustable 0% or 100% 0A and then adjust T T with the reference substance after.Measure the value of A unit, for example, or% T single-beam type has the advantage that there is less light and the elements passed to the. Substances, for example, than the others, but it has the disadvantage that there is stability in the low-value reading and changing values also failed to sweep (scan) to see the light of suck steadily. Figure 15 is an important element of the gauge light beam single design suck.5.4.2 double beam type (double beam type) measures the intensity of light by reflection.Light that passes out from the splitter to the light through the substance and reference substance, for example, the alternate. Make the light intensity through the lower half of the circuit, for example, to extend the signal obtained from a comparison of symbols derived from the sample with reference substances all the time, so it is stable to measure the intensity of light is very good, but this type of gauge has a complex composition due to using a single ISO to select the cycle signal is measured and used electric light bulb lighting is high, the prices are more expensive than single-beam type tool. Figure 16 a significant element of the gauge lighting beam double suck.5.5 How to suck the light meterAbsorb light meter may be individual techniques and how to use the different?This user should learn a detailed usage guide for help absorb light meter.In General, are as follows (the national Shu, 2539 (1996))5.5.1 crack the cover bag machine.5.5.2 power switch turned on to warm up for a long time 10-30 minutes.5.5.3 off light from inside, or outside shift slightly but are not to affect the rule ISO by closing the cover.Place a light box and off wet queue.5.5.4.0% T with zero adjustment button. The intensity of the light source should be fixed. If not fixed.Due to insufficient warm-up or unusual instruments5.5.5. wavelength of light to measure the spin button to select the wavelength.5.5.6 filter selections suitable interference light wrap5.5.7 include reference reagent (blank reagent) into hopper hopper lid, wet off queue. Wet queue.5.5.8 adjustable 100% T or OD with a button control, this step must be at all times.That has to change the wavelength of light used to measure the.5.5.9 put substance in the queue place wet Close the hopper lid, wet queue.5.5.10 read% T or A 5.5.11 the electrical switch turned off Let the engine cool before covering with machine tools cover bag.5.6 precautions in useIn order to use the light meter has the ability to absorb minimal error should do the following. (Shu, national, 2539 (1996))5.6.1 selecting appropriate analysis method5.6.2 selecting an appropriate sample (not cloudy or have other colors so mix)5.6.3 follow the instructions in the user's manual (operating manual) strictly.5.6.4 setting tool with a little dust, moisture, low temperature high and not be away from the wall.So that the heat released as well.5.6.5 use a volt controller. (Voltage stabilizer) if the volts of electricity distribution.The tools have changed over 10% off (192-242 volts)5.6.6 enough to warm up before using it.5.6.7 checking the condition of light bulb periodically with the correct location.5.6.8 light bulb turned off when not in use.5.6.9 close channel light out when it does not measure the intensity of light in order to prolong the service life of the.Light bulb5.6.10 used the width of the channel is a narrow beam to create a light that has a length range.
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