VEGA WEIGHTRAC 31 Foundation Fieldbus - Manual (Page 68)

68
11 Supplement
WEIGHTRAC 31 • Foundation Fieldbus
42375-EN-131120
Ʋ Number of digits 5
Ʋ Size of digits W x H = 7 x 13 mm
Adjustment elements 4 keys
Protection rating
Ʋ unassembled IP 20
Ʋ mounted into the housing without
cover
IP 40
Materials
Ʋ Housing ABS
Ʋ Inspection window Polyester foil
Integrated clock
Date format
Day.Month.Year
Time format 12 h/24 h
Time zone Ex factory CET
Rate deviation max. 10.5 min/year
Measurement electronics temerature
Resolution
1 °C (1.8 °F)
Accuracy ±1 °C (1.8 °F)
Voltage supply
Operating voltage
Ʋ Sensor power supply 20 … 72 V DC or 20 … 253 V AC, 50/60 Hz
Ʋ FF bus 9 … 32 V DC
Electrical protective measures
Protection, depending on housing ver-
sion
IP 66/IP 67 6)
Overvoltage category III
Protection class I
Approvals
Instruments with approvals can have different technical data depending on the version.
For that reason the associated approval documents of these instruments must be carefully noted.
They are part of the delivery or can be downloaded under www.vega.com and "VEGA Tools" as
well as under "Downloads" and "Approvals".
11.2 Supplementary information Foundation Fieldbus
The following table gives you an overview of the instrument versions and the corresponding device
descriptions, the electrical characteristics of the bus system as well as the applied function blocks.
6) A suitable cable is the prerequisite for maintaining the protection rating.