PCE Instruments Chauvin Arnoux C.A 6421 Bedienungsanleitung Seite 22

METROLOGY CHARACTERISTICS
Measurement range
Short-circuit current
Accuracy
Voltage at no-load condition
Response time
INFLUENCE QUANTITIES
Temperature
Relative humidity
Operating voltage
Voltage circuit load (1)
Current circuit load (2)
Direct voltage
Parasitic ~ voltages on H
Parasitic ~ voltages on S
(1) Resistance measured + resistance of rod E + resistance of rod S + lead resistance
(2) Resistance measured + resistance of rod E + resistance of rod H + lead resistance
(3) Possible blinking of HIGH RESISTANCE indicator beyond 5V
ELECTRICAL CARACTERISTICS
Power supply source
Allowage voltage range
Average battery time
0.5...1000 Ω
10 mA (square wave 128 Hz)
± 5%L ± 1% of galvanometer scale length
24 V
eff
about 4 seconds
Range
-10...+55°C
20...90% HR
8.8...12.5 V
50 kΩ
3000 times the reading
up to 50 kΩ
0...20 V (3)
7 V
eff
3 V for readings < 1 Ω
eff
5 V for readings ≥ 1 Ω
eff
8 alkalin R6 1.5V batteries or 8 accumulators
8.8...12.5 V
1680 measurements x 15 secondes (at 23°C 3K, with 8 alkalin
batteries), permanently checked
22
Max. variation
± 5% per 10°C
± 10% ± 0.1 Ω
minor
± 1% per 10 kΩ
from 1 to 10 Ω : ± 2% per 1 kΩ ± 0.1 Ω
from 10 to 1000 Ω : ± 3% per 10 kΩ
minor
minor
± 5%
± 5%