Measuring Instrument Training Presented By: Md. NIAZ MORSHED B.SC in EEE Deputy Manager of Rainbow Automation Rainbow Automation Industrial Attachment Training-2016
Measuring Instrument List 1. Energy meter 2. Ammeter 3. Voltmeter 4. Wattmeter 5. Frequency meter 6. Power factor meter 7. Clip on meter 8. Digital multimeter 9. Analog multimeter 12. Resistance measure 13.Diode Indication 14. Transistor Indication 15. Tachometer 16. Lux meter 17. Digital Anemometer 10. Range extension of ammeter 11. CT connection Rainbow Automation Industrial Attachment Training-2016
Energy meter There are two types of Energy meter : 1. Single phase 2. Three phase 1. Single phase Energy meter : AC Supply Load Fig: Real view of a Energy Meter Fig: Connection diagram of a Energy Meter Rainbow Automation Industrial Attachment Training-2016
1. Three phase Energy meter : Fig: Real view of a Energy Meter Rainbow Automation Fig: Connection diagram of a Energy Meter Industrial Attachment Training-2016
Ammeter There are two types of Ammeter : 1. AC Ammeter 2. DC Ammeter Symbol of Ammeter : Fig: Ammeter symbol Rainbow Automation Industrial Attachment Training-2016
AC Ammeter Fig: Real view of AC Ammeter A AC supply ~ L Load Rainbow Automation Fig: Connection diagram of a AC Ammeter Industrial Attachment Training-2016
DC Ammeter DC supply Fig: Real view of DC Ammeter A L Load Rainbow Automation Fig: Connection diagram of a DC Ammeter Industrial Attachment Training-2016
Voltmeter There are two types of Voltmeter : 1. AC Voltmeter 1. DC Voltmeter Symbol of Ammeter : V Fig: Voltmeter symbol Rainbow Automation Industrial Attachment Training-2016
AC Voltmeter Fig: Real view of AC Voltmeter AC supply ~ LL v V Fig: Connection diagram of a AC Voltmeter Rainbow Automation Industrial Attachment Training-2016
DC Voltmeter Fig: Real view of DC Voltmeter DC Supply Load LL Vv Fig: Connection diagram of a DC Voltmeter Rainbow Automation Industrial Attachment Training-2016
Wattmeter There are two types of Wattmeter : 1. Analog panel wattmeter 2. Digital panel wattmeter Analog panel wattmeter Digital panel wattmeter
Internal connection diagram of a wattmeter : Current Coil (C.C) AC Supply Pressure Coil (P.C) Load
connection diagram of a wattmeter : AC Supply 1 2 3 4 Load Current Coil (C.C) 1 2 AC Supply Pressure Coil (P.C) 3 4 Load
Connection diagram of a frequency meter: Analog Digital P AC Supply ~ Hz v N Connection diagram
Real View of Power factor meter: Analog Digital AC Supply ~ Load LL Cosϕ v Fig: Connection diagram of a Power factor meter with load:
Clip on meter
Its Measure Rotational Speed Tachometer
Its Measure Intensity Of Light Lux meter
Digital Anemometer Measure The Air Flow
CT-Current Transformer
CT-Current Transformer
CT connection AC supply ~ L Load
Range extension of DC ammeter Load - DC + Source
Ish Rsh =ImRm Range extension of DC ammeter Calculation I Im Rm A Rsh= ImRm / Ish Rsh= ImRm /(I-Im) I=Im+Ish Ish=I-Im Ish Rsh Example: Rsh= ImRm /(I-Im) =0.5*2/0.5 =2Ω Say: Rm=2Ω Im=.5A Ish=I-Im =1-0.5 =0.5A Ish=Shunt Current Rsh=Shunt Resistance Im=Meter Current Rm=Meter Resistance I=Total Current
Resistance measure
Diode Indication
Varius Types of Transistor: Transistor Indication
Transistor Symbol C= Collector B=Base E=Emitter
Transistor Indication Base Emi er Resistance Base Collector Resistance
Rainbow Automation Industrial Attachment Training-2016