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Product Center > Panel Meter > Demand Ammeter > Demand Ammeter
Demand Ammeter
Demand Ammeter
Product Name    SD series square double structure demand scale
     
Category    Demand Ammeters > SD-2M96A 2M72A
     
Model   SD-2M96A   SD-2M96
     
 
 

SD-2M96A SD-2M72A  bi-structure bimetallic instrument meter

Accuracy class:For bimetallic structure,3.0

For through current:1A 1.5A 2A 3A 5A

For transformation ratio:The meters should be used with a current transformer of which primary current is 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A 120A 150A......10KA and external secondary current is 1A or 5A.As long as overload rate and the incoming current keep the same,dial scales of all models in this series can be exchanged yet remain the accuracy.

Measurement time;1.8minutes 2.15minutes 3.30minutes

Bimetallic meter overload rate:1.non-overload  2.1.2times

Electromagnetic structure overload rate:1.non-overload  2.1.2times

Product performance:All the meters are equipped with pure white silk-screen printing dial scale.The movement of bimetallic instrument meters is made of processed imported bimetallic materials so that it is of good thermal stability,vibration-resistant and heat-resistant.The case is made of ordinary ABS plastics or flame retardant ABS plastics ,of which the resistant temperature can be up to 85°C.The base is made of PC plastics or flame retardant PC plastics,of which the resistant temperature can be up to 120°C .The resistant voltage is higher than 2000V.This kind of meter is easy to install with high-strengthen plastics grip piece by screwing down the nut so that the meter is of high immobility.

Principles of measurement and the features:each bimetallic instrument meter consists of two bimetallic wire rods,of which the force directions are the opposite,a diversion thread and a transmission shaft.According to the theory that bimetallic materials expand when heated and contract when cooled,heat emerges when the measured current flows through the diversion thread and one of the bimetallic wire rods,so that the black pointer on the transmission shaft deflects under the circumstance than bimetallic wire rod expands when heated,which leads to the deflection of the red pointer.The scale mark that the red pointer points to is the measures value.Bimetallic instrument meters can be merely used in AC circuits indicated by MAX AVRG.The advantage are of good thermal stability and simple structure,and they can as well be used in 50hz/60ha circuits.The disadvantage is the low overload capacity.Special frequency should be marked out in ordering.

Product Name    SD series square single structure demand scale
     
Category    Demand Ammeters > SD-M96A M72A M48A
     
Model   SD-M96A   SD-M72A
     
 
 

SD-M96A SD-M72A  SD-M48A mono-structure bimetallic instrument meter

Accuracy class:For bimetallic structure,3.0

For through current:1A 1.5A 2A 3A 5A

For transformation ratio:The meters should be used with a current transformer of which primary current is 10A 15A 20A 25A 30A 40A 50A 60A 75A 100A 120A 150A......10KA and external secondary current is 1A or 5A.As long as overload rate and the incoming current keep the same,dial scales of all models in this series can be exchanged yet remain the accuracy.

Measurement time;1.8minutes 2.15minutes 3.30minutes

Bimetallic meter overload rate:1.non-overload  2.1.2times

Electromagnetic structure overload rate:1.non-overload  2.1.2times

Product performance:All the meters are equipped with pure white silk-screen printing dial scale.The movement of bimetallic instrument meters is made of processed imported bimetallic materials so that it is of good thermal stability,vibration-resistant and heat-resistant.The case is made of ordinary ABS plastics or flame retardant ABS plastics ,of which the resistant temperature can be up to 85°C.The base is made of PC plastics or flame retardant PC plastics,of which the resistant temperature can be up to 120°C .The resistant voltage is higher than 2000V.This kind of meter is easy to install with high-strengthen plastics grip piece by screwing down the nut so that the meter is of high immobility.

Principles of measurement and the features:each bimetallic instrument meter consists of two bimetallic wire rods,of which the force directions are the opposite,a diversion thread and a transmission shaft.According to the theory that bimetallic materials expand when heated and contract when cooled,heat emerges when the measured current flows through the diversion thread and one of the bimetallic wire rods,so that the black pointer on the transmission shaft deflects under the circumstance than bimetallic wire rod expands when heated,which leads to the deflection of the red pointer.The scale mark that the red pointer points to is the measures value.Bimetallic instrument meters can be merely used in AC circuits indicated by MAX AVRG.The advantage are of good thermal stability and simple structure,and they can as well be used in 50hz/60ha circuits.The disadvantage is the low overload capacity.Special frequency should be marked out in ordering.



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