60
10 Supplement
VEGAPULS 66 • 4 … 20 mA/HART - two-wire
28438-EN-170927
Display and adjustment module
Voltage supply and data transmission
through the sensor
Indication
LC display in dot matrix
Adjustment elements
4 keys
Protection rating
Ʋ unassembled
IP 20
Ʋ mounted into the sensor without cover IP 40
Ambient temperature - Display and
adjustment module
-20 … +70 °C (-4 … +158 °F)
Material
Ʋ Housing
ABS
Ʋ Inspection window
Polyester foil
Voltage supply
Operating voltage U
B
Ʋ Non-Ex instrument
14 … 36 V DC
Ʋ Ex ia instrument
14 … 30 V DC
Ʋ Ex-d-ia instrument
20 … 36 V DC
Operating voltage U
B
- illuminated display and adjustment module
Ʋ Non-Ex instrument
20 … 36 V DC
Ʋ Ex ia instrument
20 … 30 V DC
Ʋ Ex-d-ia instrument
20 … 36 V DC
Permissible residual ripple
Ʋ < 100 Hz
U
ss
< 1 V
Ʋ 100 Hz … 10 kHz
U
ss
< 10 mV
Load resistor
Ʋ Calculation
(U
B
- U
min
)/0.022 A
Ʋ Example - Non-Ex instrument with
U
B
= 24 V DC
(24 V - 14 V)/0.022 A = 455 Ω
Potential connections and electrical separating measures in the instrument
Electronics
Not non-floating
Ground terminal
Galvanically connected with the metal process fitting
Galvanic separation between electronics and metal housing parts
Ʋ Reference voltage
500 V AC
Electrical protective measures
Protection rating
Housing material
Version
IP-protection class
NEMA protection
Plastic
Single chamber
IP 66/IP 67
Type 4X
Double chamber
IP 66/IP 67
Type 4X
