46
4.2.22 Indication of Phase Order
Acquisition duration period
Validity duration period
approximately 10s at 50Hz
approximately 2s to 400Hz
Acquisition duration measurement period
and phase order display
≤500ms
Acceptable phase unbalance
Acceptable amplitude unbalance
Acceptable level of harmonics in voltage
4.3 ENVIRONMENTAL CONDITIONS
Conditions Operating Storage
Temperature -4° to +131°F
(-20° to +55°C)
-40° to +158°F
(-40° to +70°C)
Relative humidity (RH): ≤90% up to 131°F (55°C) ≤90% up to 158°F (70°C)
4.4 MECHANICAL SPECIFICATIONS
Housing:
Rigid polycarbonate shell with over-molded elastomer
covering;
UL94 V1
Jaws:
Opening: 1.3" (34mm)
Clamping diameter: 1.3" (34mm)
Screen:
Blue backlighting
Dimension: 1.1 x 1.7" (28 x 43.5mm)
Dimension: 8.7 x 3.0 x 1.65" (222 x 78 x 42mm)
Weight: 0.86 lbs (340g) with the batteries