Gas sensor alarm overall calibration platform
Affiliated technical field
The utility model relates to a kind of checking table, especially a kind of gas sensor alarm overall calibration platform.
Background technology
Gas sensor overall calibration platform is the special-purpose verification calibrating installation that is used for colliery methane transducer, carbon monoxide transducer, methane warning instrument, carbon monoxide alarm.Both can measure the reading error of all gases sensor, also can measure its output frequency or output current value.Checking table is equipped with computer data acquisition system, and special software can show, storage, print sensor check results, prints verification or calibration certificate automatically.Present disclosed gas checking table type is various, for example number of patent application is 200420017712, name is called many with disclosing a kind of gas relay checking table of using in the gas relay flow velocity checking table more, comprise oil-immersed pump, gas collector, verification stand, oil filter, fuel tank, said checking table is provided with oval gear flowmeter 4-1, the 4-2 of two different ranges, two electric control valve 5-1,5-2 and high pressure oil hose 9, two electric control valves are connected with the oval gear flowmeter of these two different ranges respectively through two high pressure oil hoses; Said checking table also comprises a digital processing controller 8.The beneficial effects of the utility model are: rational in infrastructure, volume is little, the metering accuracy height, reliable operation, a check-out console can carry out verification to domestic three kinds of caliber Φ 25mm, Φ 50mm, Φ 80mm specification gas relay, also can carry out verification, and can carry out verification, also applicable to the verification of other flow utensils the oil flow relay of transformer cooling device to the gas relay of other model.A kind of gas relay checking table of using more, comprise oil-immersed pump, gas collector, verification stand, oil filter, fuel tank, it is characterized in that: said checking table is provided with the oval gear flowmeter (4-1,4-2) of two different ranges, two electric control valves (5-1,5-2) and high pressure oil hose, two electric control valves are connected with the oval gear flowmeter of these two different ranges respectively through two high pressure oil hoses; Said checking table also comprises a digital processing controller; The signal output part of oval gear flowmeter (4-1,4-2) is connected with the signal input part of digital processing controller, the signal input part of digital processing controller also with by the signal output part of school gas relay is connected, and the output terminal of digital processing controller is connected with the oil-immersed pump power switch with electric control valve reversible electric machine power switch.Number of patent application is 200520099841, name is called portable gas relay tester, a kind of on-the-spot portable gas relay tester that uses that detects of transformer that is applicable to that power test mechanism or generating plant, transformer station install, it is characterized in that: tested gas relay is installed on the adjustable support by hand actuable clamping device, the oil tube is communicated with the entrance point of tested gas relay by fluidic device, and the endpiece of tested gas relay is carried out valve by flow velocity and is communicated with oil returning tube; Electric air compressor links to each other by the breather cheek valve of the escape pipe socket on the microcomputer measuring and controlling case with oil tube top, and the flow velocity transmitter on the oil tin and vent valve link to each other with transducer signal socket on the microcomputer measuring and controlling case with a signal link; Socket on the flow velocity execution valve links to each other by signal cable with the signal plug on the microcomputer measuring and controlling case, can directly carry out follow-on test to gas relay, and volume is little, is convenient to the transformer erecting stage gas relay is carried out the definite value check.Portable gas relay tester, it is mainly by adjustable support, the oil tube, oil returning tube, the microcomputer measuring and controlling case, electric air compressor, hand actuable clamping device, fluidic device, the jet arrangements for speed regulation, flow velocity is carried out valve, volumetric measuring device, hydraulic valve, liquid level gauge, conduit under fluid pressure, the umbilical cable line that transmits signal constitutes, it is characterized in that: tested gas relay is installed on the adjustable support by hand actuable clamping device, the oil tube is communicated with the entrance point of tested gas relay by fluidic device, and the endpiece of tested gas relay is carried out valve by flow velocity and is communicated with oil returning tube; Electric air compressor links to each other by the breather cheek valve of the escape pipe socket on the microcomputer measuring and controlling case with oil tube top, and the flow velocity transmitter on the oil tin and vent valve link to each other with transducer signal socket on the microcomputer measuring and controlling case with a signal link; Socket on the flow velocity execution valve links to each other by signal cable with the signal plug on the microcomputer measuring and controlling case.
Summary of the invention
Existingly can only carry out verification, calibrating in order to overcome to a gas sensor, need manually change the deficiency of troublesome poeration, the utility model provides a kind of gas sensor alarm overall calibration platform, and this checking table checking table can carry out verification, calibrating to 5 gas sensors simultaneously; Can gather the output of 5 road gas sensor signals simultaneously, need not manually to change, reduce operate miss; Be equipped with different manufacturers sensor connector, sensor calibration is easy to connect.
The technical scheme that its technical matters that solves the utility model adopts is: gas sensor alarm overall calibration platform is made up of ship type switch, sensor, four fixing-line devices, computer, stabilized voltage supply, power switch, frequency meters.Stabilized power source provides the voltage of checking table work; Power switch is controlled the voltage of whole checking table; The time and the frequency of frequency meter effect record work; Whether ship type switch controlled frequency meter is in running order; The effect of four fixing-line devices is tightly to block insulated conductor, adjusts the arc hammer, tension lead and fixing.Standard gas sample uncertainty: secondary methane standard gas, uncertainty grade≤3%; Secondary carbon monoxide standard gas, uncertainty grade≤3%; Calibration gas uncertainty: methane calibration gas, uncertainty grade≤5%; The carbon monoxide calibration gas, uncertainty grade≤3%; Gas sample concentration: methane and carbon monoxide standard gas and calibration gas concentration are as follows: methane (%CH4): 0.50; 1.50; 2.00; 3.50; Carbon monoxide (* 10-6CO): 10; 24; 200; 400; Flowmeter: 60~600mL/min; Frequency meter: 0-30KHz, precision: 1Hz; Input power supply: AC 220V ± 10%, 50Hz; Out-put supply: D.C. regulated power supply 0~30V (adjustable continuously), 5A.
The beneficial effects of the utility model are to carry out verification, calibrating to 5 gas sensors simultaneously; Can gather the output of 5 road gas sensor signals simultaneously, need not manually to change, reduce operate miss; Be equipped with different manufacturers sensor connector, sensor calibration is easy to connect.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the synoptic diagram of gas sensor alarm overall calibration platform.
1. ship type switches among the figure, 2. sensor, 3. four fixing-line devices, 4. computer, 5. stabilized voltage supply, 6. power switch, 7. frequency meter.
Embodiment
In the drawings, at first gas sensor is placed on dedicated location, opening power (6), opening device is connected gas cylinder with computer (4) with gas sensor, simultaneously sensor line is connected to cabinet by four fixing-line devices (3), opens computer software, data are imported into computer (4) by module, calculate data, print data is also filed.