Product Manual

FLIRCM72_CM74USERMANUALDocumentIdentifier:CM72_CM74‐en‐US_AA
23
7.2Electricalspecifications
Accuracyis±(%reading+numberofdigits(dgt))at73.4
°
F±9
°
F(23
°
C±5
°
C),<80%RH.
Table7.1Voltage(TRMS)
Function Range Accuracy(ofreading)
DCV
60.00V
±(1.0%+5dgt)600.0V
1000V(CM74)
ACV
60.00V
±(1.0%+5dgt)
45~400Hz
600.0V(CM72)
1000V(CM74)
ACVVFD(CM74only)
60.00V
±(1%+5dgt)45~65Hz
±(5%+5dgt)65~400Hz

600.0V
1000V
LoZ(LowImpedance)

60.0VAC/DC
AC:±(1.0%+5dgt)45~400Hz
DC:±(1.0%+5dgt)

600.0VAC/DC
(CM72)
1000VAC/DC
(CM74)

Notes:
LCDDisplays‘0’countswhentheACreadingis<10counts
CM72Overloadprotection:600V(rms)
CM74Overloadprotection:1000V(rms)
Inputimpedance:10MΩ//,<100pF
LoZInputimpedance:2.5kΩ
ACconversiontype:ACcoupled,trueRMSresponding,calibratedtotheRMSvalueofasinewave
input.
Accuraciesaregivenfor sinewavesatfullscaleandnon‐sinewavesbelowhalfscale.
Ifthemetermeasuresa4000‐countsignalandtheCrestFactorofthesignalismorethen3.0,thereadingmay
notmeetspecifiedtolerances.Fornon‐sinewaves(50/60Hz),add
thefollowingCrestFactorcorrections:
 Foracrestfactorof1.0–2.0,add3.0%totheaccuracy.
 Foracrestfactorof2.0–2.5,add5.0%totheaccuracy.
 Foracrestfactorof2.5–3.0,add7.0%totheaccuracy.