Yokogawa EJX118A - Manual (Page 44)

<8. General Specifications>
8-2
IM 01C25H01-01E
 Normal Operating Condition
(Selected features may affect limits.)
Ambient Temperature Limits
–40 to 60°C (–40 to 140°F)
–30 to 60°C (–22 to 140°F) with LCD display
Note: The ambient temperature limits must be within the
fill fluid operating temperature range, see table
8.1.
Process temperature
for fill fluid code B
Process temperature
for fill fluid code A
Process temperature
for fill fluid code C
Flange max.
working
pressure
Atmospheric
pressure
Transmitter ambient
temperature range
(for fill fluid code A, B)
Process Temperature (°C)
Working
pressure
kPa abs
(psi abs)
2.7 (0.38)
100 (14.5)
0.1 (0.014)
1 (0.14)
10 (1.4)
-50 0 50 100 150 200 250 300350
F0801a.ai
Figure 8.1a Working Pressure and Process
Temperature (Fill fluid: silicone oil for
general and high temperature use)
Process Temperature Limits
See table 8.1.
Ambient Humidity Limits
0 to 100% RH
Working Pressure Limits
See table 8.1.
For atmospheric pressure or below, see figure
8.1a through 8.1e.
Table 8.1 Process temperature, Ambient temperature, and Working pressure
Code
Process
temperature *1
Ambient
temperature *2
Working pressure Specific gravity *3
Silicone oil
(general use)
A
–10 to 250°C
(14 to 482°F) *4
–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
–30 to 180°C
(–22 to 356°F)
–15 to 60°C
(–5 to 140°F)
0.94
Silicone oil
(high temperature use)
C
10 to 310°C
(50 to 590°F)
10 to 60°C
(50 to 140°F)
1.09
Fluorinated oil
(oil-prohibited use)
D
–20 to 120°C
(–4 to 248°F)
–10 to 60°C
(14 to 140°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 60°C
(–40 to 140°F)
100 kPa abs
(atmospheric pressure) to
flange rating pressure
1.09
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 310°C
(50 to 590°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
*1: See figure 8.1a through 8.1e ‘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 wetted parts material code TW (Tantalum),
process temperature limit is up to 200°C (392°F).
*5: The upper ambient temperature limit is 50°C (122°F) in
the following combinations.
Process connection
style code
Process connection
size code
W (Flush type)
2 (2-inch) or
8 (1 1/2-inch)
E (Extension type) 3 (3-inch)
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.