CHAPTER B - 620ES EXPLOSIVE SAFETY
IGNITER TESTER - SPECIFICATIONS
______________________________________________________________
Actual fail-safe currents vary with each instrument and may be ±20% from the typical value.
Table B-2. Specifications
Accuracy:
(for 1 year @25°C ± 10°C)
2.0 ohm range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.02% of reading ±0.05% of range
20
ohm through 200 ohm ranges . . . . . . . . . . . . . . . . ±0.02% of reading ±0.02% of range
200 Kohm range . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.05% of reading ±0.05% of range
Temperature Range
Operating
0°C to 50°C
Storage
-10°C to 70°C
Temperature Coefficient
20
ohm through 20K ohm ranges
±0.002% per °C (from 0°C-15EC and 35°C-50°C)
Instrument Display
. . (20,000 count) 4½ digit Super Bright Light Emitting Diodes (LED)
Over-Range Indication
. . . . . . . . . . . . . . . . ( select next higher range) Display flashes
Measurement Update Rate
. . . . . Approximately 300ms
Voltage Protection - Maximum Input
. . . . 250VDC or AC
without damage
peak
Open Circuit Current Source Compliance Voltage
. . . . . clamped at ~1.6 volts
Power
. . . . (4 "D" 5.0 AHr Heavy Duty) 1.2V rechargeable nickel-cadmium batteries
or OP 247 Continuous Isolated Operating Power
AC/DC Battery Charger (Option DC)
provides 6VDC at 250 mA nominal
Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5" (24cm) W x 11" (27cm) D x 3"(8cm) H
Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 lbs net; 15 lbs shipping
620ES
Resistance Range/Resolution
620ES Nominal Test Current
/Failsafe Current Levels
