Moving coil instruments with circular scale of 240° employ a platinum taut band for suspension of moving coil assembly instead of pivot & jewel system. It is less prone to sluggishness & zero shift due to frictionless movement.
These meters are basically used for the measurement of DC current & voltage, and can be used with built in rectifier for the measurement of AC current & voltage in the frequency range 45~65Hz. / 400Hz. The meters measure average value. It can be scaled to indicate RMS values (on request).
These instruments are not recommended for non-sinusoidal waveforms of current & voltage. The other indications like Frequency, Power & Power factor can be offered with suitable external transducers. Speed indication is possible if used with AC tacho-generator (not in the scope of AE).
- Long scale instruments.
Electrical Specifications :
|Type :||Moving Coil 240°|
|Operating Voltage :||60mV to 600V.|
|Operating Current :||500µA to 30A & Above 30A with external shunt.|
|Accuracy Class :||2.5 for SQ48, 1.5 for SQ72 & SQ96, 1.0 for SQ14 4, SQ110.|
|Dielectric Test :||2kV RMS for 1 min.|
|Operating Temp :||-10°C to 55°C|
|Storage Temp :||-20°C to 70°C|
|Humidity :||Up to 95% RH|
|Conforms To :||I.S. 1248 / I.E.C. 60051 (Part 2)|
Note : Range below minimum & above maximum on request if feasible.
Accuracy Class 0.5 for all Frequency meters, 1.5 for SQ96,SQ144,SQ110, AC Ammeter,
AC / Ammeter / Voltmeter & Power meter, 2° for all Power Factor meter,
BSQ48 – i) DC / AC Voltmeter, AC Ammeter with external box. ii) Frequency meter, Power meter with external transducer box.
CFor higher ranges use AE external shunts. (Refer Data Sheet for Shunts).
DSQ72 – Power & Power factor meter with external transducer box.
ESQ 110-Power meter with external transducer box..
Mechanical Specifications :
ADepth 100mm for SQ96 & SQ144 Power meter.
BWeight 1.2kg for SQ96 Power meter, 1.5kg for SQ144 Power meter.
Ordering Information :
1) Type 2) Model 3) Range For all & additional 4) Frequency 5) Operating Voltage 6) Operating Current 7) PTR 8) CTR For Power & Power Factor measurement.