tender for frequency measuring meter - digital panel meter size-96x96mm with 4 digit display with min. digit height of 12.5mm (suitable for flush mounting in control panel), with auxiliary supply: 220 v dc+/- 10 , instrument shall confirm to relevant is and shall have an accuracy class of +/- 0.5 or better. and compactable without transducer (having following specification : range-45-55hz,input-0-415v, accuracy: 0.5 or 0.2)
