Additional note - Main switch Power “On”. When
the 620A Igniter Tester is first turned on, the unit
briefly draws more internal power then cuts back
to less than 100 mA, after a few seconds. The
initial Power “On” battery drain is to heat up the
unit’s ovenized zener voltage reference. If the
“Low Battery” Indicator only comes on (i.e. 10 to
15 seconds) for a few seconds (i.e. when the 620A
is first turned on), then goes out, the battery levels
are starting to indicate the charge level is starting
to get low.
A-4. Setup and Use
Once the AMPTEC 620A has had it’s batteries
charged for 12 to 24 hours it is ready for use. The
620A 4 only draws a little electrical power
(internal battery based) and generates virtually no
heat. Consequently, it may be used in any area
where the environment does not exceed the
specifications of Table B-2.
You may also have a test procedure or technical
order (T.O.) that has you inspect the calibration
sticker on the AMPTEC 620A Igniter Tester to
determine that it is still valid, or within its
calibration interval. Avoid exposing the 620A to
extreme temperatures, hot or cold which will affect
accuracy and shorten battery life-span.
A-5 Serial Number , Revision and Safety Board
Approvals
The AMPTEC 620A Igniter Tester represents the
latest in ultra-safe Igniter Tester resistance
measurements. The AMPTEC 620A-4 (serial
numbers 620A4-800 and higher) Igniter Testers
use the same main printed circuit board (PCB)
referred to as “Revision D”. This manual is
specific for the “Rev D” versions of the 620A.
Please check the Appendix of this manual for any
addendums that may apply to any differences
between the newer (Rev D.) version 620A-4s and
older (Rev C.) 620A-4 Igniter Testers with serial
numbers less than 620A4-800 (i.e. 620A4- 525).
The AMPTEC 620A-4 Igniter Tester is Mil Std
810 Method 511 Compliant for use in Explosive
Atmospheres Use to +50 degrees C . A copy of this
Approval and others is available in the password
protected section of AMPTEC RESEARCH'S
Certified for Use in Explosive Fuel Air Mixtures per
Mil Standard 810 Method 511.
A copy of this Approval and others is available in the
password protected section of AMPTEC
RESEARCH'S website www.amptec.com/tech.htm
. At present you must enter the following for access
User ID=2004 and the password=safety.
A variety of USAF Tech Orders related to the
AMPTEC 620A-4 are available there for review.
Contact AMPTEC RESEARCH if the password has
changed.
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