PR Series Indicator

The PR family Panel Meters are supplied with rectangular fronts, round barrels and variouscombination of mounting studs for conventional front of panel mounting (known as "Surface Mount").

EX Series Indicators

EX Panel Meters are a repeat of the PR Series shown above. They differ in that their primary method of mounting is from the rear of the panel into a cut out prepared to match the size of the meter window.

PR and EX Models

Range

Resistance (+/- 10%)

50µA

2600ohms

100µA

640 ohms

200µA

220 ohms

1mA

35 ohms

50mV

50 ohms (1mA)

Voltmeters

1000 ohms per Volt

Accuracy:

D.C. Ammeters and Voltmeters: Moving Coil +/- 2% ES

A.C. Ammeters and Voltmeters: Iron Vane +/- 2% Rectified +/- -3% ES

Frequency:

 +/- 0.5% of mid frequency

Mechanism Type:

D.C. Ammeters and Voltmeters: Moving Coil

A.C. Ammeters and Voltmeters: Iron Vane (inherently True  RMS)

A.C. Ammeters and Voltmeters (rectified): Moving Coil, average sensing

Frequency Meters: Moving Coil with zero crossing detector circuit

Elapsed Time Meters: Cyclometer Type, non resettable

Suspension Systems:

All Iron Vane Mechanizms used in the A.C. Ammeters and Voltmeters utilize ruggedized Pivot and Jewel suspension systems. Rectified Ammeters and Voltmeters,Frequency Meters and all D.C. meter designs combine Taut Band suspension with fluid dampening.

Response Time:

Less than 3 seconds to indication mark.

Enclosures:

All models are enclosed to meet IP54 rating (splash proof) of IEC 529. (NEMA 3)

Temperature:

Operating: 0 to +40 degrees C

Storage: -10 to -50 degrees C

Burden (A.C. Meters):

Ammeters and Voltmeters: Iron Vane 2VA Max

Ammeters and Voltmeters: Rectified 0.5VA Max

Frequency Meters & ETM: Less than 1VA