Yokogawa EJX930A - Manual (Page 55)

<9. Maintenance>
9-3
IM 01C25R01-01E
V
R Rc
P
Using pressure
generator
Reference pressure
High pressure side High pressure side
Low pressure side
open to atmosphere
Low pressure side
open to atmosphere
Supply pressure
Pressure generator
Load resistance,
250Ω
Load
adjusting
resistance,
100Ω
Digital voltmeter
Power
supply
E
V
R Rc
P
Using pressure
source with
manometer
Reference pressure
Pressure source
Model MT220
precision digital manometer
Load resistance,
250Ω
Load
adjusting
resistance,
100Ω Digital voltmeter
Power
supply
E
F0901.ai
Figure 9.1 Instrument Connections for Differential Pressure (HART protocol type)
V
R Rc
P
Using pressure
generator
Reference pressure
High pressure side High pressure side
Low pressure
side
Low pressure
side
Supply pressure
Pressure generator
Load resistance,
250Ω
Load
adjusting
resistance,
100Ω
Digital voltmeter
Power
supply
E
V
R Rc
P
Using pressure
source with
manometer
Reference pressure
Pressure source
Model MT220
precision digital manometer
Load resistance,
250Ω
Load
adjusting
resistance,
100Ω Digital voltmeter
Power
supply
E
F0902.ai
Figure 9.2 Instrument Connections for Static Pressure (HART protocol type)
NOTE
Apply pressure to H side and L side evenly.