Distributed in the United States imports 4160-2 INTERSCAN formaldehyde concentration detector

Formaldehyde detector 4160 I. Introduction:  US INTERSCAN company produces formaldehyde gas analyzer convenient, accurate and excellent performance. Second, the main applications: civil indoor formaldehyde content testing, construction materials formaldehyde detection, and detection of formaldehyde and other public places! Third, the 4160 gas analyzer performance parameters:  accuracy  analog indication: ± 2.0% full-scale digital display: ± 2.0% of reading  reproducibility  ± 0.5% of full scale  minimum detectable line  1.0%  full scale range:  0-19.99 ppm 4160-2 type 0-199.9 ppm 4160-1 type 0-1999 ppb 4160 Type Minimum: 0- 1999ppb  Zero drift  ± 1.0% full scale (24 hours)  full read  drift less than ± 2.0% full scale (24 hours)   rise time of less than 1 second    dimensions 178 x 102 x 225 mm  Weight 2.0 kg  linearity  ± 1.0% full scale  IV Remarks:  Works 2.1 Sensors The instrument sensors for two-electrode sensor, it has the advantage of a series of three-electrode sensor sample extraction and diffusion type sensors do not have. The sensor electrolyte is inactive, similar to flash the electrolyte and nickel-cadmium batteries. Without regard to cell damage or acid damage to the instrument. The sensor has a sealed gas chamber, which not only makes sensors live longer, but also eliminates the possibility of the reference electrode contamination, no three-electrode sensor shortcomings need air to operate and can be used in anaerobic environment. Sample extraction sensors are highly sensitive detector, depending on the type of gas, the sensitivity of 50-200 times greater than the diffusion type sensors. For the measurement of low concentration of the gas which is extremely critical condition. Formaldehyde mg / m3 and ppm conversion relationship: ppm = mg / m3 × B / M on the formula: B: molar volume of gas at standard conditions (at 00C, B = 22.4; 250C = 24.46 升) M: measured substances molecular weight (formaldehyde HCOH M = 30) namely: ppm = mg / m3 × 22.4 / 30 = mg / m3 × 0.74666 public health standards formaldehyde concentration indicators: 0.12mg / m3 according to the formula determined relations mg / m3 and ppm are: 00C when 0.12mg / m3 = 0.0896ppm 250C when 0.12mg / m3 = 0.0978ppm Appendix: 1000ppb = 1ppm Fifth, use: 1, check the battery before use, must first check the charging status of the battery. The function switch (FUNCTION) is set to BAT, TEST "A", if the battery is in good condition, then the LCD display panel display (ignoring any decimal point when checking the battery) of 100 or higher when the value of full charge can be used continuously for 12 hours. The FUNCTION switch is screwed to BAT.TEST "B". The location of the test analyzer Amplifier battery. This set of alkaline batteries to power the sensor, regardless of the analyzer is turned on or off state are maintained in the ready state. For security reasons, it is best to replace the battery in the LCD display is less than 100 before. 2, alarm setting usually plant the alarm is set at 50% of full scale, the alarm is reset by the following methods. (1) The function switch (FUNCTION) to zero (ZERO). Turn the "zero" knob LCD display to the alarm concentration level required. (2) clockwise to adjust the alarm setting (ALARM SET) is rotated to the "warning light flashes up." An alarm value has been active, the counter-clockwise alarm setting (ALARM SET) button until the alarm does not move, then clockwise back to just flashing warning lights. 3, the instrument zero instrument was often necessary to use a field zero. Under zero-point adjustment in the SAMPLE (sample) mode, the inner space sampling type with C12 gas filter air filter to zero. 4, sample gas set function switch (FUNCTION) to the sample (SAMPLE) position, the pump activity, so the analyzer in the sample gas mode. After the instrument is stable, the concentration of formaldehyde gas is displayed value, sample flow rate of about 1 liter / min. Qingdao Lu Bo provide you with one year warranty!