TB 9-6625-199-24
APPENDIX B
PERFORMANCE TABLES
Beckman Instruments, Model DM25
Test instrument parameters
Performance specifications
DC VOLTAGE
Range: 0 to 1000 V dc
Accuracy: (0.8% rdg + 1 dgt)
AC VOLTAGE
Range: 0 to 1000 V ac
Accuracy: (1.2% rdg + 10 dgts), @ 50 to 500 Hz, except 1000 V ac;
1000 V ac rng, 50 to 400 Hz
DC CURRENT
Range: 0 to 10 A dc
Accuracy: (1.25% rdg + 1 dgt), except 10 A dc which is (2.0% rdg + 3 dgts)
AC CURRENT
Range: 0 to 10 A ac
Accuracy: 50 to 500 Hz; ex 10 AAC rng;
(3.0% rdg + 4 dgts),
10 A ac rng, 50 to 500 Hz
Range: 0 to 2000 MΩ
Accuracy: 200 Ω (1.0% + 4 dgts) High;
2 k-2 MΩ (0.8% + 1 dgt) High, (1.2% + 2 dgts) Low;
20 MΩ (2.0% +4 dgts) High, (3.0% + 4 dgts) Low
Range: 0 to 20 μF
Accuracy: (3.0% rdg + 10 dgts)
Table B-129. DC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V dc)
(V dc)
(V dc)
Min
Max
190 m
200 m
188.38 m
191.62 m
1.9
2
1.884
1.916
19
20
18.84
19.16
190
200
188.4
191.6
990
1000
982.0
998.0
Table B-130. AC Voltage.
Calibrator output
Test instrument
Applied
Range
Limits (V ac)
(V ac)
(V ac)
Min
Max
190 m @ 400 Hz
200 m
187.6 m
192.4 m
1.9 @ 400 Hz
2
1.867
1.933
19 @ 400 Hz
20
18.67
19.33
190 @ 400 Hz
200
187.6
192.4
700 @ 400 Hz
1000
691.5
708.5
Table B-131. DC Current.
Calibrator output
Test instrument
Applied
Range
Limits (A dc)
(A dc)
(A dc)
Min
Max
190 μ
200 μ
187.5 μ
192.5 μ
19 m
20 m
18.75 m
19.25 m
190 m
200 m
187.5 m
192.5 m
1
9
10
8.79
9.21
Move TI lead to TI 10 A input.
1
B-52