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Showing posts from December, 2021

STP & ETP

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  STP     Sewage treatment platn (residential & commercial) ETP     Effluent treatment plant (industry) COD     Chemical oxygen demand (soluble & insoluble organic compound) (2hr to 3hr) (mg/l) BOD     Biochemical oxygen demand (organic compound) (3days to 5days) (mg/l) KEY POINTS: Outlet of STP 50mg/l Biproduct of anaerobic digestion is H2S & NH3 To reduce stink smell use ozone 
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GAS LIGHTER

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  The gas lighter is mostly cylindrical in shape and consists of a piezo-electric crystal over which a spring-loaded hammer is placed. ... Due to piezo-electric effect, a high voltage is generated in the range of  800 volts .
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BIOMETRICS & ACCESS CONTROL SYSTEM

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EPABX

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INDICATORS OF VEHICLE

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 INDICATORS OF VEHICLE
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IGNITION METHOD OF VEHICLE

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 IGNITION METHOD OF VEHICLE
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STARTING METHOD OF VEHICLE

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STARTING METHOD OF VEHICLE
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FUEL MONITERING IN VEHICLE

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  FUEL MONITERING IN VEHICLE
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REMOTE TAP CHANGER CONTROL

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REMOTE TAP CHANGER CONTROL (RTCC)  
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HAIR DRYER

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HAIR DRYER  
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