SI-20KA/ST/QB Certification Meter Kit

SI-20KA/ST/QB Certification Meter Kit

DC & AC Ammeter with Shot Timer & Quick Break for Certification of Mag Units and Power Packs


The SI-20KA/ST/QB is a combination Certification Ammeter, Shot Timer and Quick Break Tester designed to provide a low cost, high accuracy display of output kilo amperes with hold, auto reset and update functions as well as true mag shot duration and digital quantitative Quick Break indication, displayed in volts from 0.1 to 29.9 volts, based on MIL spec 6867C. The higher the voltage reading, the faster the quick break. (There is a table on the back of the Quick Break Meter which indicates what maximum voltage is acceptable for each size mag unit coil). 

This high visibility LCD digital panel meter comes in two modes: Shot Time Duration and Quick Break Voltage. Either can be selected when powering on using the reset button. The timer has a resolution of 0.1 seconds from .20 to 9.90 seconds.

Standard Meters can be both TRUE Average DC and TRUE RMS AC calibrated for operation from the included 50mv/ 1000 Amp meter shunt clamped between the heads of your Mag unit or power pack unit. The meters are fully calibrated and the shunt is certified to .1% accuracy using NIST traceable test equipment from an accredited 17025 calibration lab. There are 3 different sizes of current shunts available, depending on what max mag current you will want to measure. This ammeter can read up to 19,900 amps.

Features & Advantages

  • Calibration adjustment for gain
  • Auto Hold/Manual switch
  • Holds last reading
  • Can perform continuous readings, including very low current readings below 50 amps to zero amps, for open heads test
  • Red LED Display, 3 1/2" digits, 19.99KA
  • High accuracy True RMS AC Converter
  • High accuracy DC average circuit assures correct displayed value regardless of which DC waveform is being recorded. (ph, hw, dc, fwdc, 3ph fwdc)
  • AC power with cord included (no batteries to replace)
  • Shunt input jack with high accuracy 10,000 amp included with Certification document NIST traceable, carrying case and 2 yr. warranty
  • Shunt triggered down to 50 amps
  • Optional 20K Shunt

Technical Specifications

SI-20KA/ST/QB Specifications

SI-20KA/ST/QB Specifications
Basic Accuracy DC error less than 1% of reading; AC error less than 2% of reading +/- 2 lsb count
Range 10 to 19,990 amperes in 10 amp increments
DPM Display 31/2" LED, .56" (14mm) digits
Conversion Time 280msec
Quick Break .1 to 29.9 volts +/- 1% of reading
Signal Input 50mv/1000A Meter Shunt
Shot Timer 0.2 to 9.90 sec. with accuracy +/- 1% of reading
Power Line Input 100 to 140 VAC, 4VA, 50/60 Hz, (220 VAC version is available)
Operating Temperature 41° to 113°F (5° to 45°C)
Dimensions 12" x 19" x 7" (305 x 483 x 178 mm) (HxWxD)
Weight 14 lbs. (6.35 kg)
Warranty: 2 year warranty
Description Part # Saved Price Select Option Add to
Scientific Instruments SI-20KA, Shot Timer, Quick-Break Certification Ammeter Kit, Includes 10K certified shunt MT-SI-20KA/ST/QB $2,575.00
Scientific Instruments Optional 20K Certified Shunt MT-SI-20KA-Shunt $400.00