CHAPTER B - 620LM EXPLOSIVE SAFETY
IGNITER TESTER - SPECIFICATIONS
______________________________________________________________
Diode Test (Voltage Forward) Test Current levels - 0.5mA/<25mA Failsafe
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
W
range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.02% of reading ±0.05% of range
20
W
and 2 K
W
ranges . . . . . . . . . . . . . . . . ±0.02% of reading ±0.02% of range
20 M
W
range . . . . . . . . . . . . . . . . . . . . . . . . . . . ±2.0% of reading ±0.2% of range
Temperature Range
Operating
0°C to 50°C
Storage
-10°C to 70°C
Temperature Coefficient
20
W
and 2 K
W
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
. . . . . a modified mating connector version of OP 247 a dual stage Isolated (3 KV Isolation)
Continuos Operating power.
See OP 247 schematics for further details.
The dedicated mating connector
from the AC/DC adapter for the rear panel input is used to prevent the wrong power adapter being used with
this product.
Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5" (24cm) W x 11" (27cm) D x 3"(8cm) H
Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 lbs net; 7 lbs shipping
620LM
Resistance Range/Resolution
620LM Nominal Test Current
/Failsafe Current Levels
2.0
W
20 2.0 K 20 M
W
W
W
100 µ
W
1.0 m
100 m
1
K
W
W
W
2.0
W
20 2.0 K 20 M
W
W
W
5mA 5 mA 50µA 0.01 µA
8mA 8mA 150 A 0.015µA
µ
2.0 (
I.9999
) Ohms Fullscale with
0.1 milliohm (100 µ ) Resolution
620ES Explosive Safety Igniter Tester
