Product Introduction:
This device utilizes the principles of pressure reduction and flow limitation, with the ability to increase or decrease pressure and control flow rate. Periodic verification/calibration of catalytic combustion principle methane analyzer in conjunction with methane standard gas in the air.
1. Due to the standard gas flow rate for detecting low concentration methane instruments being 160ml/min to 200ml/min and 350ml/min ± 20ml/min, when using an air bottle to calibrate the instrument zero point, the flow meter is not used. The user directly inserts the hose of the air outlet into the sensor input port and rotates the air outlet to the left or right to adjust the flow rate below 350ml.
2. The high-pressure gas cylinder used in this device is a composite gas cylinder.
3. According to the design requirements, the gas cylinder volume of the calibration device used underground is 0.7L. Under the condition of a pressure of 12Mpa, the device can supply gas continuously for up to six hours at a flow rate of 200ml/min. Based on the gas supply time of 90 seconds for each sensor, theoretically, one cylinder of gas can adjust 240 sensors and can be adjusted multiple times as needed.
4. This device is equipped with a toolbox. When used underground, a spare strap can be used to hang the gas cylinder near the instrument being adjusted, and the flow meter should be as perpendicular to the ground as possible.
According to regulations, the device for calibrating sensors and power-off devices underground consists of two gas cylinders, one for fresh air and one for 1-2% CH4 methane standard gas. According to different usage conditions, 1% CH4 is generally used to calibrate the alarm point of sensors and the restoration function of power-off instruments. If available, a single bottle of 1.5-2% CH4 gas sample can be added to calibrate the power-off point and linearity of the above instruments.
6. The calibration device used on the ground can use single or double cylinder combinations, and can also provide gas cylinders with a large volume of% according to user requirements, such as 1.5L, 2.0L, etc. According to regulations, there should be four types of gas samples used for ground adjustment instruments, namely 0.5%, 1.5%, 2.0%, and 3.0% CH4. 2.0% CH4 is used to test the reaction rate of the instrument, and the remaining three are used for the linearity of the instrument.
, Indicator:
Flow range: 100-1000ml/min
Inflation pressure: 10MPa
3. Uncertainty of integrated pressure reducing flow valve: flow rate 4%; Pressure: 2.5%;
4. CH4 (air balance gas) low concentration standard gas can be configured at 0.5-3.5%; High concentration standard gas (30-90%)
5. O2 standard gas can also be configured as needed; Non corrosive standard gases such as CO standard gas (according to user selection)
6. Can verify gas types: non corrosive gases such as CH4, CO, O2, etc
Basic configuration:
2 0.7L gas cylinders
One integrated pressure reducing valve flowmeter
Silicone tube 2 meters
1 suitcase with shoulder strap |
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