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Elma BM 82X & BM52X Side 22
Hvis instrument spændings-modstands input terminalerne er genstand for høje
spændingstransienter (forudsaget ved lyn nedbrud eller kortslutning i systemet) ved et
tilfælde eller unormale forhold ved funktion vil instrumentbeskyttelsen såsom sikringer
springe. Sørg altid for, at sikringer og andre vitale reservedele bliver udskiftet af en
teknikker.
Batteri og sikrings udskiftning
Batteri: 1 stk. 9V batteri.
Sikringer:
Elma BM820 modeller:
Sikring 1 (FS1) for μA/mA: 1A/600V AC, IR 100kA, F sikring.
Sikring 2 (FS2) for A: 10A/600V AC, IR 100kA, F sikring.
Elma BM 520 modeller:
Sikring 1 (FS1) for μA/mA: 0,44A/1000V AC & V DC, IR 10kA, F sikring.
Sikring 2 (FS2) for A: 11A/100V AC & V DC, IR 20kA, F sikring.
Batteri udskiftning
Løsn de 2 skruer fra batteridækslet I bunden af
instrumentet. Åben dækslet og skub batteriholderen op.
Udskift batteriet. Skru skruerne fast igen.
Sikrings udskiftning
Løsn de 4 skruer fra bunden af instrumentet. Løft enden af
instrumentbunden tættest på bøsningerne, indtil det løsner
sig selv fra instrumentets top. Udskift de sprungne
sikringer. Påsæt bunden på igen, og sørg for at alt er tæt.
Skru skruerne fast igen.
Generelle specifikationer
Display: 9999 tællinger ved: ACV, DCV, Hz & nS
6000 tællinger ved: mV, μA, mA, A, Ω & kapacitans
Polaritet: Automatisk
Updateringsområde: Digitalt display: 5 pr. sek. Nominelt;
41 segments markør: 60 pr. sek. Maks
Lavt batteri: Under ca. 7V
Arbejdstemperatur: 0°C til 45°C
Relativ fugtighed: Maks. relativ fugtighed 80% for temperatur op til 31°C
formindsket lineært til 50% relativ fugtighed ved 45°C.
Forureningsgrad: 2
Opbevaringstemperatur: -20°C til 60°C, < 80% RH (uden batteri)
Højde: Funktion ved under 2000m
Temperaturkoefficient: Nominel 0,15 x (specificeret nøjagtighed)/ °C @ (0°C
- 18°C eller 28°C - 45°C), eller som beskrevet.
22


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