User Adjustments & Maintenance - ACL 880 Operation Manual

ACL 880 Operation Manual Rev. 08/22/19 MKB
the 880 makes many measurements each second and evaluates their consistency and stability. If
necessary the 880 will automatically extend the measurement time (EP) to insure an accurate
representation of the material under test.
The ACL 880 measurement process is quite fast and once a measurement is stable in the LCD,
the operator may elect to use the stable displayed measurement. In this case the EP is manually
determined by the operator. This is an efficient operating procedure for determining if the
measurement is generally within the required range for the object being audited. In this case,
the operator usually observes and confirms measurement stability, which results in faster audit
measurements. However, if the measurement is of a critical nature, or being used for material
qualification purposes, the full EP for that measurement should be employed, i.e., when the
measurement is completed and displayed, and the Green LED comes ON as described below. If
the operator desires the EP to be determined by the instrument in AUTO/GO A mode, the
Green Hold LED illuminates when the appropriate measurement period for each measurement
is reached. It takes into account the material variables seen during the measurement and
adjusts the EP for optimal measurement accuracy.
Typical EP's for the ACL 880 instrument are:
1.0E3 to 1.0E9 ohms: Typically 2 to 8 seconds (Range Average ̴ 6 .0 seconds)
1.0E09 to 1.0E11 ohms: 7 to 10 seconds
>1.0E11 to 1.0E12 ohms: 10 to 25 seconds
These values are variable and based on the stability of the materials being measured, as well as
the environmental conditions. For example, while the default EP for the ACL 880 instrument is
7.5 seconds, EP automatically adjusts to enhance measurement accuracy.
USER ADJUSTMENTS & MAINTENANCE
The primary user adjustments are limited and have been previously described in this manual,
i.e., the Null adjustment to compensate for test lead resistance. There is no reason for the
operator or unauthorized personnel to break the warranty seal and open the unit. The
instrument's circuits and mechanical connections have been precisely installed and the
instrument tested. Annual calibration includes measurement of test voltage under load and a
series of functional resistance test measurements. A qualified calibration laboratory should
make these measurements and adjustments if necessary.
WARRANTY INFORMTION
Limited Warranty & Limitation of Liability: Each ACL 880 product is warranted to be free from
defects in material and workmanship under normal use and service. The warranty period is one
(1) year and begins on the date of shipment. This warranty extends only to the original buyer or
end-user customer and does not apply to fuses, disposable batteries or to any product which
ACL'S opinion, has been misused, altered, neglected or damaged by accident or abnormal
conditions of operation or handling. ACL Staticide warrants that software will operate
substantially in accordance with its functional specifications for 90 days and that it has been
properly recorded on non-defective media. ACL Staticide does not warrant that software will be
error free or operate without interruption. ACL Staticide reserves the right to invoice Buyer for
importation costs of repair/replacement parts when product purchased in one country is
ACL Incorporated Tel: 847-981-9212
th
840 W. 49 Place Page 8 of 10 info@aclstaticide.com
Chicago, IL 60609 USA www.aclstaticide.com