YOKINS' Portable Ammeters and voltmeters are designed for use in the field test rooms and laboratories, where precise measurement is required. These portable Instruments can be used equally well in educational institutions, where there is possible misuse; and in factories, where these instruments are important for making calibration check on switchboard panel instruments.

Portable meters are manufactured under rigid quality control to ensure stable performance and durability.

FEATURES :

• Knife edge pointer and Anti-parallax mirror scale.
• Shock resistant pivot jewel movement. The pivots are made from carbon steel hard chrome plated and are mounted on spring loaded sapphire jewels. This ensures shock resistance due to vibrations in transit and minimum friction during use.
• Accuracy class 1.0% as per IS:1248
• Wooden case with Bakelite Top.
• Wide window for easy reading.
• Quick response due to unique damping.
  
  GENERAL CHARACTERISTICS
• Scale Length150mm(approx)
• Insulation Resistance Over 20 megaohms at 500 VDC
• Sensitivity 1000 ohms/V for DC Meters
• Test Voltage 2000V AC (rms)for 1 minute
  
  PORTABLE METERS ARE AVAILABLE IN MOVING IRON & MOVING COIL TYPE.
  
  MOVING IRON INSTRUMENTS
  Rated Accuracy :
  Class 1.0 (1% of full scale value) as per IS:1248 between 10%-100% of scale.
  
  
  MOVING COIL DC INSTRUMENTS
  Rated Accuracy :
  Class 1.0 ( 1% of full scale value) as per IS:1248 between 15%-100% of scale.
  
  
  MOVING COIL AC RECTIFIER TYPE INSTRUMENTS
  Rated Accuracy :
  Class 2.5 (2.5% of full scale value) as per IS:1248 between 25%-100% of scale.
  
  
  PORTABLE POW>+/-3 degree (Electrical) as per IS:1248 for power factor meters.
  
  
  PORTABLE WATTMETERS -DYNAMOMETER TYPE
  Rated Accuracy :
  +/-1.0% of full scale value as per IS:1248 between 10%-100% of the scale for single phase (Unity Power factor) UPF wattmeters.+/-1.5% of full scale value as per IS:1248 for Three phase watt-meters. +/-1.5% of full scale value as per IS: 1248 for 0.2 PF (LPF) single phase wattmeters.