<7. General Specifications>
7-9
IM 01C25W01-01EN
■ EJXC81A, EJAC81E Absolute Pressure Diaphragm Seal System
Table 2. Flange Mounted
Code
Process
temperature
*
1
Ambient
temperature
*
2
Working pressure
Specific gravity
*
3
Silicone oil
(general use)
A
−10 to 315°C*
4
(14 to 599°F)
−10 to 60°C
(14 to 140°F)
2.7 kPa abs (0.38 psi abs)
to flange rating pressure
1.07
Silicone oil
(general use)
B
−40 to 210°C*
4
(−40 to 410°F)
−30 to 60°C
(−22 to 140°F)
0.94
Silicone oil
(high temp. and high
vacuum use)
1
−10 to 250°C*
4
(14 to 482°F)
−10 to 60°C*
5
(14 to 140°F)
0.013 kPa abs
(0.0019 psi abs)
to flange rating pressure
1.07
Silicone oil
(high temp. and high
vacuum use)
2
10 to 315°C*
4
(50 to 599°F)
10 to 60°C*
5
(50 to 140°F)
1.09
Silicone oil
(high vacuum use)
4
−10 to 100°C
(14 to 212°F)
−10 to 60°C*
5
(14 to 140°F)
1.07
Note: The differential pressure transmitter should be installed at least 600 mm below the high pressure (HP) process connection.
However, this value (600 mm) may be affected by ambient temperature, operating pressure, fill fluid or material of the
wetted diaphragm.
Contact YOKOGAWA when the transmitter can not be installed at least 600 mm below the HP process connection
*1:
See figure 1a, 1c and 1d ‘Working Pressure and Process Temperature.’
*2:
This ambient temperature is the transmitter ambient temperature.
*3:
Approximate values at a temperature of 25°C (77°F)
*4:
In case of diaphragm material code T (Tantalum), process temperature limit is up to 200°C (392°F).
*5:
The upper ambient temperature limit is 50°(122°F) in the following combinations.
Model
Process connection size code
C80FW
Flush type
2 (2-inch) or 8 (1 1/2-inch)
C80FE
Extension type
3 (3-inch)
■ EJXC50A, EJAC50E Direct Mounted Diaphragm Seal System
EJXC40A Digital Remote Sensor Diaphragm Seal System
Table 3-1a. Flange Mounted
Code
Process
temperature
*
1
Ambient
temperature
*
2
*
5
Working pressure
Specific gravity
*
3
Silicone oil
(general use)
A
−10 to 315°C*
4
(14 to 599°F)
−10 to 85°C
(14 to 185°F)
2.7 kPa abs (0.38 psi abs)
to flange rating pressure
1.07
Silicone oil
(general use)
B
−40 to 210°C*
4
(−40 to 410°F)
−40 to 85°C
(−40 to 185°F)
0.94
Silicone oil
(low temperature use)
F
−70 to 100°C
(−94 to 212°F)
−40 to 85°C
(−40 to 185°F)
100 kPa abs (atmospheric pressure)
to flange pressure rating
0.88
Fluorinated oil
(oil-prohibited use)
D
−20 to 120°C
(−4 to 248°F)
−20 to 80°C
(−4 to 176°F)
51 kPa abs (7.4 psi abs)
to flange rating pressure
1.90 to 1.92
Ethylene glycol
(low temperature use)
E
−50 to 100°C
(−58 to 212°F)
−40 to 85°C
(−40 to 185°F)
100 kPa abs (atmospheric pressure)
to flange pressure rating
1.09
Propylene glycol
P
−10 to 120°C
(14 to 248°F)
−10 to 85°C
(14 to 185°F)
1.04
Table 3-2a. Hygienic Mounted
Code
Process
temperature
*
1
Ambient
temperature
*
2
Working pressure
Specific gravity
*
3
Silicone oil
(general use)
B
−10 to 120°C*
6
(14 to 248°F)
−10 to 60°C
(14 to 140°F)
2.7 kPa abs (0.38 psi abs) to 1MPaG
0.94
Propylene glycol
P
−10 to 120°C*
7
(14 to 248°F)
−10 to 60°C
(14 to 140°F)
100 kPa abs (atmospheric pressure)
to 1MPaG
1.04
*1:
See figure 1e and 1f ‘Working Pressure and Process Temperature.’
*2:
This ambient temperature is the transmitter ambient temperature.
*3:
Approximate values at a temperature of 25°C (77°F)
*4:
In case of diaphragm material code T (Tantalum), process temperature limit is up to 200°C (392°F).
*5:
See figure 1g and 1h ‘Ambient Temperature and Process Temperature.’
*6:
Temperature limit of cleansing process is up to 150°C (302°F) / max. 60 minutes
*7:
Temperature limit of cleansing process is up to 150°C (302°F) / max. 30 minutes
