IET Labs, Inc. 1864-1644, Руководство пользователя и обслуживания

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CONTENTS, FIGURES, AND TABLES
1864-1644 Positive Polarity Megohmmeter
v
Specifi cations
1864-1644 Specifi cations
Resistance Accuracy (min reading 0.5):
Range 1-5: ±2 (meter 1)%
Where meter reading is the actual number
indicated at the scale; e.g. for a reading of
900 k
Ω on the 1 G Ω scale, the accuracy is
±2(.9+1)% or 3.8%
Range 6: add ±2% to accuracy above
Range 7: add ±3% to accuracy above
Range 8: add ±5% to accuracy above
Accuracy applies for >100 V;
For
≤ 100 V add 2%.
Meter Display:
Full mechanical zero at right end, so 2.5 % full-
scale is near right end and full-scale is at left end.
However, resistance values read naturally, increas-
ing from left to right.
Voltage Accuracy (across unknown):
For ≥ 100 V ± 2%
For <100 V ± (3% + 0.5 V)
(10% of scale)
("5" rdg)
(2.5% of scale)
("20" rdg)
10 Vdc to 50 Vdc 50 k Ω 500 G Ω 2 T Ω * 7
50 Vdc to 100 Vdc 200 k Ω 5 T Ω 20 T Ω 8
100 Vdc to 500 Vdc 500 k Ω 5 T Ω 20 T Ω * 7
500 Vdc to 1090 Vdc 5 M Ω 50 T Ω 200 T Ω 8
*Recommended Limit
Rmin
(Full Scale left end)
("0.5" rdg)
Rmax (right end)
Voltage
Setting
Useful
Ranges
Short-Circuit Current :
Approximately 5 mA
Power:
100 - 125
or
200 - 250 V
50 - 400 Hz
13 W
Fuse:
For 100 to 125 V operation:
Fuse: T 0.25A, 250V (PN 0034.3111)
For 200 to 250 V operation:
Fuse: T 0.125A, 250V (PN 0034.3108)
Fuse holder is located under the IEC receptacle and
holds a 5 x 20 mm time-delay fuse.
Dimensions:
6.63 x 10 x 6.75 in.
Weight:
9.5 lb.