After the customer presses the button of laser pointer

After the customer presses the button of laser pointer .
Temperature calibration: Set the calibration of the temperature of the gas, you can choose the input method or measurement; calibration of the temperature measurement method is divided into 4-20mA measurement or thermistor measurement. If you select 4-20mA measurement, 4-20mA current value of the corresponding gas temperature settings, see 4.14 "auxiliary setting" submenu of the temperature channel input settings. Calibration pressure: to set the calibration of the pressure of the gas, you can choose the input method or measurement. Calibration pressure measurement refers to the 4-20mA measurement, 4-20mA current value corresponding to the value of gas pressure settings, see 4.14 "secondary set" sub-menu of the pressure channel input set.This kind of blue laser pointer is equipped with five different laser caps. 
All the LGA-4000 laser gas analyzer in the factory have been accurate calibration, the initial use without calibration. But with the laser gas analysis instrument internal electronic components aging, slow drift of the system parameters will affect the measurement accuracy, and therefore need analysis system for periodic calibration. LGA-4000 laser gas analyzer is based on semiconductor laser absorption spectroscopy (DLAS) technology, the interference of dust, the laser light intensity changes and other factors have a good deterrent, so the system with the traditional infrared analysis instrument compared, it has a very long (more than six months) of the calibration cycle. The accurate measurement of the LGA-4000 laser gas analyzer is closely related to the accuracy of the calibration. The appearance design of the blue laser pointer is novel and graceful.
The calibration needs to be carefully consider whether there is a need for calibration. When really necessary to be calibrated, to ensure the accuracy of the calibration process steps. Recommend the use of the Company to provide the calibration unit calibration, Figure 6.1 for a schematic of the calibration unit. Calibration of the central analytical instruments on the control panel keyboard can also use the LGA-4000 server software through the RS485 interface with the LGA-4000 laser gas analyzer for real-time communication. LGA-4000 laser gas analyzer calibration gas concentrations depending on the instrument range and the measured ambient temperature. Concentration is too high saturation measurement signal, the adsorption phenomena on the calibration tube and the connecting lines and the relatively large noise when the concentration is too low will affect the accuracy of the calibration process.