CHAPTER B - 640N IGNITER TESTER SPECIFICATIONS
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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)
20
W
through 2000
W
ranges . . . . . . . . . . . . . . . . ±0.02% of reading ±0.02% of range
200K
W
range . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.05% of reading ±0.05% of range
2.0 M
W
range . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.0% of reading ±0.2% of range
Temperature Range
Operating
0°C to 50°C
Storage
-10°C to 70°C
Temperature Coefficient
20
W
through 20K
W
ranges
±0.002% per °C (from 0°C-15°C and 35°C-50°C)
200K
W
range and above not applicable
Instrument Display
. . (20,000 count) 4½ digit Super Bright Light Emitting Diodes (LED)
Over-Range Indication
. . . . . . . . . . . . . . . . ( select next higher range) 640N Display flashes
Measurement Update Rate
. . . . . Approximately 300ms (3 per second)
Voltage Protection - Maximum Input
. . . . 250VDC or AC
without damage
peak
Open Circuit Current Source Compliance Voltage
. . . . . clamped at ~1.6 volts
Power
. . . . (4 "D" 5.7AHr Heavy Duty) 1.2V rechargeable nickel-cadmium batteries
AC/DC Battery Charger (Option 630DC)
provides 9VDC at 1.1A nominal
Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 13.5" (34.3cm) W x 12" (30.5cm) D x 6"(15.2cm) H
Water Resistance
. . . . . . . . . . . . . To a 3 foot depth underwater - case closed with purge valve shut
Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 lbs net; 15 lbs shipping
SECTION C - REPLACEMENT, OPTIONAL AND ACCESSORY ITEMS
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C-1. Available Accessories and Options
This preliminary manual does not list all possible accessories that AMPTEC RESEARCH is willing to provide as a support items for the 630BN Failsafe
Ohmmeter. Contact the sales department at AMPTEC if you have a request for an item that is not described here. Listed below are the options available for use
with the AMPTEC 630BN Igniter Tester/FailSafe Ohmmeter.
Option 630DC: Battery Charger
Option "630DC" is an AC/DC converter that converts 115VAC line voltage to 9VDC at 1.1A. One charger is provided as a standard accessory with every 630BN
Ohmmeter.
Replacement Batteries
The rechargeable NICAD batteries installed in the 630BN should provide years of trouble-free operation. Replacement, however, will eventually be necessary.
The 630BN uses four 1.2V cells (5.7 AHr recommended) installed in a reusable battery box. The batteries are held in place by a metal retaining plate. When
ordering replacement batteries, please specify AMPTEC Stock #0E-10117, quantity four (4).
C-2. Test Lead Sets
Option 630-305: Two Single Banana Cable
Option "630-305" is a 48" long replacement cable set normally supplied as part of the U.S. NAVY 630BN
Ohmmeter package. The Option “630-305 has twin single banana plugs (meter and common) terminated
with the 630BN style keyed connector. One banana plug is red (Voltage high and Current High) and one
banana plug lead end is black (Voltage low and Current low) . The 4-wire configuration is maintained up to
the point of the banana plug, eliminating most cable resistance effects.
You may also contact the sales department at AMPTEC RESEARCH if you have need for a special probe,
adapter, lead set or custom option not listed in this manual.
.
640N RESISTANCE RANGE/DISPLAY RESOLUTION TABLE
20
W
/1m
W
2000
W
/0.1
W
200K
W
/10
W
2M
W
/100
W
5mA/<8mA 50µA/150µA
0.5µA/1.5 µA .05µA/.15 µA
Содержание 640N
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