Chauvin Arnoux MA400D Manual De Instrucciones página 25

Typical
± 0.25 % / 10 °C
See § 3.4
± 0.5 %
Away from opening: 33 dB
At opening: 30 dB
at 16.66 Hz : ± (2 % + 1 ct)
at 50 Hz : ± (0.5 % + 1 ct)
at 440 Hz : ± (30 % + 1 ct)
Housing: 43 dB
Sensor: 50 dB
3.5. POwER SUPPLy
The device can be powered:
„ either by two 1.5 V R03 (AAA) alkaline batteries,
„ or by two NiMH storage batteries of the same size.
The nominal operating voltage is between 1.8 and 3.2 V.
The battery life in continuous operation is:
„ 70 hours with super‑alkaline batteries,
„ 50 hours with NiMH storage batteries having a capacity
of 1200 mAh.
The low battery condition is reported by the blinking
symbol on the display unit. When it is lit steadily, the batter‑
ies must be replaced (see § 4.2).
3.8. ENvIRONMENTAL CONDITIONS
The instrument must be used in the following conditions:
„ Temperature in use:
„ Storage temperature:
„ Relative humidity in use:
„ Relative humidity in storage: 90% RH (up to 45°C)
The sensor can withstand a temperature of 90°C.
Error on the measurement
< 1 ct
0.2%
< 1 ct
< 1 ct
Maximum
±(2% + 1 ct)
±( 0.5 % / 10 °C + 2 ct)
± (0.3 % + 2 ct)
± (5 % + 1 ct)
± (1 % + 1 ct)
± (0.5 % + 1 ct)
± (6 % + 1 ct)
‑ 3 dB typical
± (1.5 % ± 1 ct)
Away from opening: ≥ 28 dB
At opening: ≥ 25 dB
± (6 % + 1 ct)
± (3 % + 1 ct)
Housing: ≥ 30 dB
Sensor: ≥ 40 dB
0°C to +50°C
‑20°C to +70°C
(without batteries)
80% RH to 50°C
25
‑
≥ 50 dB
≥ 60 dB