VEGA VEGAFLEX 86 4 … 20 mA_HART two-wire Coax probe With SIL qualification - Manual (Page 84)

84
12 Supplement
VEGAFLEX 86 • 4 … 20 mA/HART two-wire
44231-EN-130823
Measurement electronics temerature
Resolution
1 °C (1.8 °F)
Accuracy ±1 °C (1.8 °F)
Voltage supply
Operating voltage
Ʋ Non-Ex instrument, Ex-d instrument 9.6 … 35 V DC
Ʋ Ex-ia instrument 9.6 … 30 V DC
Ʋ Ex-d-ia instrument 15 … 35 V DC
Operating voltage with illuminated display and adjustment module
Ʋ Non-Ex instrument, Ex-d instrument 16 … 35 V DC
Ʋ Ex-ia instrument 16 … 30 V DC
Ʋ Ex-d-ia instrument 20 … 35 V DC
Interpolation protection Integrated
Permissible residual ripple - Non-Ex, Ex-ia instrument
Ʋ for 9.6 V< U
N
< 14 V ≤ 0.7 V
eff
(16 … 400 Hz)
Ʋ for 18 V< U
N
< 36 V ≤ 1 V
eff
(16 … 400 Hz)
Permissible residual ripple - Ex-d-ia instrument
Ʋ for 18 V< U
N
< 35 V ≤ 1 V
eff
(16 … 400 Hz)
Load resistor
Ʋ Calculation (U
B
- U
min
)/0.0215 A
Ʋ Example - Non-Ex instrument with
U
B
= 24 V DC
(24 V - 9.6 V)/0.0215 A = 670 Ω
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) 11)
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".
12.2 Dimensions
The following dimensional drawings represent only an extract of all possible versions. Detailed
11) The prerequisites for maintaining the protection rating are a suitable cable as well as correct mounting.