Amprobe DM-111S Current-Data-Logger - Manual (Page 49)

DMIIIS
EN - 47
13. TECHNICAL SPECIFICATIONS
13.1. FEATURES
The accuracy is stated as [% of the reading

number of digits]. It refers to the following
atmospheric conditions: temperature 73°F± 2°F (23°C ± 1°C) with relative humidity < 75%.
13.1.1. Voltage measurement (auto-ranging)
Range Accuracy Resolution Input impedance
15-370V

(0.5%+2digit)
0.2V 300k

(phase-neutral)
600k

(phase-phase) 310-635V 0.4V
13.1.2. Voltage anomalies detection (manual selection of range)
Voltage
Range Accuracy Resolution Input impedance
15-370V

(0.5%+2digit)
0.2V 300k

(phase-neutral)
600k

(phase-phase) 30-635V 0.4V
Time
Accuracy (ref. to 60Hz) Resolution

8.33ms (½ period of fundamental) 8.33ms (½ period of fundamental)
13.1.3. Current measurement (using external transducer)
Range Accuracy Resolution Input impedance
Protection against
overloads
0.005-0.26V

(0.5%+2digit)
0.0001V 100k

for STD or FlexEXT
8.3k

for FlexINT (1000A)
9.4k

for FlexINT (3000A)
5V
0.26-1V 0.0004V
Minimal Current measurable is equal to 0.5% of Clamp Full Scale
13.1.4. Power measurement (cos

: 0.5c
– 0.5i)
Value Ranges Accuracy Resolution
Active power
0 – 999.9W
1KW – 999.9KW
1MW – 999.9MW

(1.0%+2digit)
0.1W
0.1KW
0.1MW
Reactive power
0 – 999.9VAR
1KVAR – 999.9KVAR
1MVAR – 999.9MVAR
0.1VAR
0.1KVAR
0.1MVAR
Apparent power
0 – 999.9VA
1KVA – 999.9KVA
1MVA – 999.9MVA
0.1VA
0.1KVA
0.1MVA
Active energy
0 – 999.9Wh
1KWh – 999.9KWh
1MWh – 999.9MWh
0.1Wh
0.1KWh
0.1MWh
Reactive energy
0 – 999.9VARh
1KVARh – 999.9KVARh
1MVARh – 999.9MVARh
0.1VARh
0.1KVARh
0.1MVARh
13.1.5. Cos

measurement
Cos

Resolution Uncertainty (expressed in
degrees)
0.20
0.01
1.0
0.50 0.7
0.80 0.6