46
9 Supplement
OPTISOUND 3020 C • Two-wire 4 … 20 mA/HART
30507-EN-190318
Ʋ Seal FKM
-20 … +80 °C (-4 … +176 °F)
Vibration resistance
mechanical vibrations with 4 g and 5 … 100 Hz
12)
Electromechanical data
Cable entry
Ʋ Single chamber housing
– 1 x cable gland M20 x 1.5 (cable: ø 5 … 9 mm), 1 x
blind plug M20 x 1.5
or:
– 1 x closing cap ½ NPT, 1 x blind plug ½ NPT
Ʋ Double chamber housing
– 1 x cable gland M20 x 1.5 (cable: ø 5 … 9 mm), 1 x
blind plug M20 x 1.5
or:
– 1 x closing cap ½ NPT, 1 x blind plug ½ NPT
Spring-loaded terminals for wire cross-
section up to
2.5 mm² (AWG 14)
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
Ʋ Non-Ex instrument
14 … 35 V DC
Ʋ Ex-ia instrument
14 … 30 V DC
Operating voltage U
B
with lighting switched on
Ʋ Non-Ex instrument
20 … 35 V DC
Ʋ Ex-ia instrument
20 … 30 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
12)
Tested according to the guidelines of German Lloyd, GL directive 2.
