Elma Instruments BM22s Bedienungsanleitung Seite 26

Electrical Specification
Accuracy is given as +/- (% of reading digits + number of digits) or otherwise specified @ 23
+/- 5 o C and less than 75% R.H.
DC Voltage (BM25a)
BM25a Input Impedance:
AutoCheck Lo-Z DCV: 160kΩ, 160pF nominal
TM
Hi-Z DCV: 5MΩ, 90pF nominal
NMRR: > 30dB @ 50Hz/60Hz
CMRR: > 100dB @ DC, 50Hz/60Hz; Rs=1kΩ
DCV AutoCheck TM Threshold:
> +1.2VDC or < -0.6VDC nominal
1) BM25a AutoCheck TM
DC Voltage (BM22s)
4.000V, 40.00V, 400.0V
NMRR: > 50dB @ 50Hz/60Hz
CMRR: > 120dB @ DC, 50Hz/60Hz; Rs=1kΩ
Input Impedance: 10 MΩ, 30pF nominal; (1000MΩ for 400.0mV range)
AC Voltage (BM25a)
6.000V, 60.00V, 450.0V
CMRR: > 60dB @ DC to 60Hz, Rs=1kΩ
BM25a Input Impedance:
AutoCheck TM Lo-Z ACV: 160kΩ, 160pF nominal
Hi-Z ACV: 5MΩ, 90pF nominal
ACV AutoCheck TM Threshold:
> 1.5VAC (50/60Hz) nominal
AC Voltage (BM22s)
4.000V, 40.00V, 400.0V
4.000V, 40.00V, 400.0V
Input Impedance: 10 MΩ, 30pF nominal
CMRR: > 60dB @ DC to 60Hz, Rs=1kΩ
Elma 22s – 25a
RANGE
6.000V
60.00V
450.0V 1)
DCV only
RANGE
400.0mV
600V
RANGE
RANGE
60Hz -- 500Hz
50Hz -- 500Hz
600V
50Hz -- 60Hz
50Hz -- 60Hz
Accuracy
0.5%+3d
1.0%+5d
1.2%+5d
Accuracy
1.0%+2d
2.0%+2d
2.5%+4d
Accuracy
1.5%+5d
Accuracy
2.0%+5d
3.0%+5d
3.5%+5d
25
o C