Vaisala WMS302 Betriebsanweisung PDF herunterladen (Seite 231)

Chapter 8 ____________________________________________________________ Technical Data

VAISALA______________________________________________________________________ 229

Internal Battery

Table 44 AWS Logger QML201 Accuracy Specifications

Property Description/Value

Typical accuracy across

temperature range -50 ... +80

°C

Better than ± 0.06 °C

Maximum error across

temperature range -35 ... +50

°C

Less than ± 0.12 °C

Maximum error at 0 °C Less than ± 0.06 °C

Voltage measurement

±2.5 V range Better than 0.04% of reading ± 150 µV

±250 mV range Better than 0.06% of reading ± 20 µV

±25 mV range Better than 0.06% of reading ± 6 µV

±6.5 mV range Better than 0.12% of reading ± 6 µV

Frequency measurements ±0.003 % + resolution up to 8 kHz

Common mode range +5 V / -4 V

Real-time-clock (standard)

accuracy Better than 20 s/month

back-up time 5 years minimum with CR1220 Lithium cell

Table 45 AWS Logger QML201 Regulatory Compliances

Property Description/Value

Emissions CISPR 22 class B (EN55022)

ESD immunity IEC 61000-4-2

RF field immunity IEC 61000-4-3

EFT immunity IEC 61000-4-4

Surge (lightning pulse) IEC 61000-4-5

Conducted RF immunity IEC 61000-4-6

Table 46 Internal Battery Specifications

Property Description/Value

Type Sealed. Lead-acid

Nominal voltage 6 V

Nominal capacity 1.2 or 1.3 Ah

Self discharge < 3% / month

Expected lifetime 4 ... 6 years, temp. dependent

Dimensions l × w × d 97 × 54.5 × 25 mm (3.8 × 2.1 × 1 in.)

Installation DIN-rail

Weight 0.4 kg (0.9 lb.)

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Vaisala WMS302 Betriebsanweisung Seite 231