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Elma 22 - 25 - 27 Sida 20
Tid för automatisk avstängning:
BM22: Ej använd under 30 minuter
BM25 och BM27: Ej använd under 3 minuter
Mått/vikt: L 113 mm x B 53 mm x H 10,2 mm / ungefär 78 g
Specialfunktioner:
BM22: Data Hold och 30 ms MAX Hold
BM25 och BM27: AutoCheck™ (automatiskt val av V och ) och detektering av elektriska fält
Tillbehör som följer med: Installerat batteri och bruksanvisning
Tillbehör som kan köpas till: Skyddshölster BH-20R och mjuk bärväska BSC-20
Elektrisk specifikation
Noggrannheten anges som +/– (% av avläsningssiffror + antalet siffror) eller specificerat på
annat sätt vid 23 °C +/– 5 °C och mindre än 75 % relativ luftfuktighet.
DC-spänning (BM25 och BM27)
INTERVALL Noggrannhet
6,000 V 0,5 % + 3 siffror
60,00 V 1,0 % + 5 siffror
450,0 V
1)
1,2 % + 5 siffror
600,0 V
2)
2,0 % + 5 siffror
600,0 V
3)
1,5 % + 5 siffror
BM25 ingångsimpedans:
AutoCheck
TM
Lo-Z DCV: 160 k, nominellt 160 pF
BM27 ingångsimpedans:
AutoCheck
TM
Lo-Z DCV: 833 k (4,2 k när ”AUTO” visas), nominellt 90 pF
Hi-Z DCV: 5 M, nominellt 90 pF
NMRR: > 30 dB vid 50/60 Hz
CMRR: > 100 dB vid DC, 50/60 Hz; Rs = 1 k
DCV AutoCheck
TM
-tröskel:
> + 1,2 V DC eller < –0,6 V DC nominellt
1)
Endast BM25 AutoCheck
TM
DCV
2)
Endast BM27 AutoCheck
TM
DCV
3)
Endast BM27 Hi-Z DCV
DC-spänning (BM22)
INTERVALL Noggrannhet
400,0 mV 1,0 % + 2 siffror
4,000 V, 40,00 V, 400,0 V 2,0 % + 2 siffror
600 V 2,5 % + 4 siffror
NMRR: > 50 dB vid 50/60 Hz
CMRR: > 120 dB vid DC, 50/60 Hz; Rs = 1 k
Ingångsimpedans: 10 M, 30 pF nominellt; (1 000 M för intervallet 400,0 mV)
AC-spänning (BM25 och BM27)
INTERVALL Noggrannhet
50–60 Hz
6,000 V, 60,00 V, 450,0 V
1)
, 600,0 V
2)
1,5 % + 5 siffror
CMRR: > 60 dB vid DC till 60 Hz, Rs=1 kΩ
BM25 ingångsimpedans:
21


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