Model AMS-21 is a complete high current Digital Ammeter and removable Meter Shunt built into a durable ABS storage case. Certified to NIST standards that meet or exceed international industry and military meter calibration requirements.

Will measure AC or FWDC or HWDC with a fast 300msec response time. It has auto hold for storing last reading indefinitely with automatic reset and update after each measurement or may be operated in manual mode. Standard meters are AC/DC averaging or AC/DC True RMS as an *option.

SPECIFICATIONS:     

A. CURRENT AMMETER
1. Basic Accuracy = 1 %+ 2 digits AC+DC
  Mean Average = 0-1 khz CF 2
  *True RMS = 0-lOkhz CF 5
2. Input Conversion Time = 280 msec
3. Signal Input = 20mv per 1000 amps
4. Range = 0.09 to 19.99 x 1000 amperes
5. DPM Display = 3 1/2 Bright Red LED  .56" (14mm) digits

B. METER SHUNT
1. Basic Accuracy = 0.1% (0 to 85ºC)
2. Signal Output = 20mv per 1000 Amps
3. Duty Cycle  (not to Exceed 85ºC) 10%
4. (1.2m) Extension Cable     

C. LINE POWER
1. 115 VAC 50-60 Hz 3VA
2. 4' (1.2m) power cord

download PDF