70
10 Supplement
LBR • Two-wire 4 … 20 mA/HART
62273-EN-200520
Integrated clock
Date format
Day.Month.Year
Time format
12 h/24 h
Time zone, factory setting
CET
Max. rate deviation
10.5 min/year
Additional output parameter - Electronics temperature
Range
-40 … +85 °C (-40 … +185 °F)
Resolution
< 0.1 K
Deviation
±3 K
Output of the temperature values
Ʋ
Indication
Via the display and adjustment module
Ʋ
Output
Via the respective output signal
Voltage supply
Operating voltage U
B
12 … 35 V DC
Operating voltage U
B
with lighting
switched on
18 … 35 V DC
Reverse voltage protection
Integrated
Permissible residual ripple
Ʋ
for 12 V < U
B
< 18 V
≤ 0.7 V
eff
(16 … 400 Hz)
Ʋ
for 18 V < U
B
< 35 V
≤ 1 V
eff
(16 … 400 Hz)
Load resistor
Ʋ
Calculation
(U
B
- U
min
)/0.022 A
Ʋ
Example - U
B
= 24 V DC
(24 V - 12 V)/0.022 A = 545 Ω
Potential connections and electrical separating measures in the instrument
Electronics
Not non-floating
Reference voltage
8)
500 V AC
Conductive connection
Between ground terminal and metallic process fitting
Electrical protective measures
Housing material
Version
Protection acc. to
IEC 60529
Protection acc. to NEMA
Plastic
Single chamber
IP66/IP67
Type 4X
Aluminium
Single chamber
IP66/IP68 (0.2 bar)
IP68 (1 bar)
Type 6P
-
Stainless steel (electro-pol-
ished)
Single chamber
IP66/IP68 (0.2 bar)
Type 6P
Stainless steel (precision
casting)
Single chamber
IP66/IP68 (0.2 bar)
IP68 (1 bar)
Type 6P
-
8)
Galvanic separation between electronics and metal housing parts