Elma 22 - 25 - 27
side 39
Accuracy is given as +/- (% of reading number of digits) or otherwise specified @ 23
o
C +/-
5
o
C and less than 75% R.H.
DC Voltage (BM25 & BM27)
RANGE Accuracy
6.000V 0.5%+3d
60.00V 1.0%+5d
450.0V
1)
1.2%+5d
600.0V
2)
2.0%+5d
600.0V
3)
1.5%+5d
BM25 Input Impedance:
AutoCheck
TM
Lo-Z DCV: 160k
Ω
, 160pF nominal
BM27 Input Impedance:
AutoCheck
TM
Lo-Z DCV: 833k
Ω
(4.2k
Ω
when displaying “Auto”), 90pF nominal
Hi-Z DCV: 5M
Ω
, 90pF nominal
NMRR: > 30dB @ 50Hz/60Hz
CMRR: > 100dB @ DC, 50Hz/60Hz; Rs=1k
Ω
DCV AutoCheck
TM
Threshold:
> +1.2VDC or < -0.6VDC nominal
1)
BM25 AutoCheck
TM
DCV only
2)
BM27 AutoCheck
TM
DCV only
3)
BM27 Hi-Z DCV only
DC Voltage (BM22)
RANGE Accuracy
400.0mV 1.0%+2d
4.000V, 40.00V, 400.0V
2.0%+2d
600V 2.5%+4d
NMRR: > 50dB @ 50Hz/60Hz
CMRR: > 120dB @ DC, 50Hz/60Hz; Rs=1k
Ω
Input Impedance: 10 M
Ω
, 30pF nominal; (1000M
Ω
for 400.0mV range)
AC Voltage (BM25 & BM27)
RANGE Accuracy
50Hz -- 60Hz
6.000V, 60.00V, 450.0V
1)
, 600.0V
2)
1.5%+5d
CMRR: > 60dB @ DC to 60Hz, Rs=1k
Ω
BM25 Input Impedance:
AutoCheck
TM
Lo-Z ACV: 160k
Ω
, 160pF nominal
BM27 Input Impedance:
AutoCheckTM Lo-Z ACV: 833k
Ω
(4.2k
Ω
when displaying “Auto”), 90pF nominal
Hi-Z ACV: 5M
Ω
, 90pF nominal
ACV AutoCheck
TM
Threshold:
> 1.5VAC (50/60Hz) nominal
1)
Range for BM25 only
2)
Range for BM27 only
Summary of Contents for 25
Page 44: ......
