VEGA VEGAFLEX 81 Foundation Fieldbus - Manual (Page 85)

85
11 Supplement
VEGAFLEX 81 • Foundation Fieldbus
44218-EN-130910
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 Non-Ex instrument 9 … 32 V DC
Ʋ Non-Ex instrument 9 … 32 V DC
Ʋ EEx-ia instrument - Power supply
FISCO model
9 … 17.5 V DC
Ʋ EEx-ia instrument - Power supply
ENTITY model
9 … 24 V DC
Ʋ EEx-d instrument 14 … 32 V DC
Power supply by/max. number of sensors
Ʋ Fieldbus max. 32 (max. 10 with Ex)
Electrical protective measures
Protection, depending on housing version
Ʋ Plastic housing IP 66/IP 67
Ʋ Aluminium housing, stainless steel
housing - investment casting, stain-
less steel housing - electro-polished
IP 66/IP 68 (0.2 bar) 5)
Ʋ Aluminium and stainless housing, in-
vestment casting (optionally available)
IP 66/IP 68 (1 bar)
Overvoltage category III
Protection class III
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.
5) The prerequisites for maintaining the protection rating are a suitable cable as well as correct mounting.