VEGA VEGATROL 20 Ex - Manual (Page 9)

VEGATROL 20 Ex 9
2 Technical Information
Mechanical data
Material Mounting parts Stainless steel1.4571 (V4A)
Extension tube Stainless steel 1.4571 (V4A)
Tuning fork Stainless steel 1.4581 (V4A)
Resonance frequency of the tuning fork in air approx. 380 Hz
Dimensions see dimensional drawing
2.4.3 Capacitive measuring electrodes
Supply and signal circuit
Oscillator 117/4 A Ex, continuous level measurement
Power supply
approx. 17,8 V at 4 mA, approx. 14 V at 25 mA
(data of VEGAMET 509 Z Ex)
ca. 12 … 16 V (via ia-safety barrier 145)
Data transmission analog, 4 … 20 mA
Flame proofing EEx ia IIC, T6
Internal effective capacitance C
int
unimportant
Internal effective inductance L
int
unimportant
Oscillator 115 A Ex, additional switch point (only with rod electrode)
Power supply
ca. 12 … 16 V (via ia-safety barrier 145)
Data transmission analog, 4 … 20 mA
Flame proofing EEx ia IIC, T6
Internal effective capacitance C
int
unimportant
Internal effective inductance L
int
≤
0,2 mH
Ambient conditions
Permissible operating temperature -30
°
C … +70
°
C
Storage and transport temperature -40
°
C … +80
°
C
Operating pressure max. 25 bar
Electrical connection
Terminals for max. 2,5 mm 2
Cable entry Pg 13,5
Electrical protective measures
Protection class III
Mechanical data
Material Mounting parts Stainless steel 1.4571 (V4A)
Isolation PTFE partly insulated
Electrode rod Stainless steel 1.4571 (V4A)
Electrode cable Stainless steel 1.4571 (V4A)
Fixing insulator Porcelain
max. tensile strength cable electrode 3 KN
Dimensions see dimensional frawing
(max. rod length 4000 mm, max. cable length 12000 mm)
2.4.4 Housing of the system sensor
Mechanical data
Material Housing Stainless steel 1.4571 (V4A)
Flange Stainless steel 1.4571 (V4A)
Concentric tube Stainless steel 1.4571 (V4A)
Pg-cable entry brass nickle plated
Fixing pieces in the concentric tube PTFE
Dimensions see dimensional drawing (concentric tube length 4000 mm)
Weight basic weight approx. 4 kg
per metre concentric tube additional approx. 1 kg
Electrical protective measures
Protection IP 67