Amptec Research 640N, Руководство по эксплуатации и техническому обслуживанию

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(i.e. linearity) of a given 640N resistance range.
The 0.1 ohm resistor can be used to check the
640N’s zero offset. The AMPTEC 640N’s zero
offset can be adjusted while the test leads are
connected to the 0.1 ohm resistor by authorized
personnel (i.e. calibration lab technician).
Refer the AMPTEC 640N to qualified service
personnel (i.e Calibration Lab) if you suspect
(i.e large error) the 640N measurement display
readings don’t agree with the resistor values
labeled on 640N Function Test Section. Do not
attempt to repair the 640N unless you are
qualified.
Do
not attempt to calibrate the 640N unless you are
qualified.
D-3. AMPTEC 640N Front Panel Diagram
1. Calibration/Maintenance access screws
2. Purge Valve
3. Handles
,
also can be easily protected with a tamper proof
calibration sticker or seal.
provides air pressure
equalization to open the 640N case after a
transit involving an altitude change if unit will
not easily open.
for lifting front plate, once the
access screws have been removed, for
calibration access
1
1
1
9
1
1
1
1
1
1
2
3
3
4
6
5
7
21
20
8
11
10
12
13
14
18
19
22
19
15
17
16
MILLAMPERES
640N
WATER-RESISTANT
IGNITER TESTER
1.0M OHM
1.9M OHM
1.5 µA .15 µA 150 µA
<
8 mA