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266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A
... 13 Specification
... Operating limits 266CRx
The table below contains the specifications for diaphragm seal
filling fluids when used in transmitters with (a) diaphragm
seal(s).
Filling fluid
(application)
Silicone oil DC 200
10 cSt
@ 385 mbar
Silicone oil Baysilone PD5
5 cSt
@ 900 mbar
Fluorocarbon Galden G5™
(oxygen applications)
Silicone oil (high-
temperature applications)
Mineral oil Esso Marcol 122™
(food and beverage, sanitary
@ 630 mbar
applications) with FDA
approval
Flushing ring gasket
material
Pressure (max.)
Garlock®
6.9 MPa, 69 bar,
Graphite
2.5 MPa, 25 bar,
PTFE
6 MPa, 60 bar,
Process temperature and pressure limits
T
P
T
max
min
max
°C (°F)
mbar abs
°C (°F)
@ Pabs
(mm Hg)
@ P
min
> than
250 (480)
0.7
130
(0.5)
(266)
250 (480)
0.7
45
(0.5)
(123)
160 (320)
2.1
60
@ 1 bar
(1.52)
(140)
375 (707)
0.7
220
@ 1 bar
(0.5)
(328)
250 (480)
0.7
110
(0.5)
(230)
Process limits
Temperature
73 and 204 °C
1000 psi
( 100 and 400 °F)
100 and 380 °C
362 psi
( 148 and 716 °F)
100 and 250 °C
870 psi
( 148 and 482 °F)
Operating limits 266CSx
Pressure limits
Gauge pressure limits
The transmitter models 266CSX can operate without damage
within the following overpressure limits:
Sensors
Filling fluid
T
min
A
Silicone oil
°C (°F)
40
A
Fluorocarbon
( 40)
(Galden)
85
( 121)
20
C to N
Silicone oil
( 4)
10
(14)
6
(21)
C to N
Fluorocarbon
(Galden)
P x T
*
1 MPa, 10 bar, 145 psi for Kynar-PVDF
250000
(°F x psi)
Gauge pressure limits
0.5 kPa abs., 5 mbar abs., 0.07 psia
and 0.6 MPa, 6 bar, 87 psi
or 2 MPa, 20 bar, 290 psi
depending on code variant selected*
17.5 kPa abs., 175 mbar abs., 2.5 psia
and 0.6 MPa, 6 bar, 87 psi
or 2 MPa, 20 bar, 290 psi
depending on code variant selected*
0.5 kPa abs., 5 mbar abs., 0.07 psia
and 2 MPa, 20 bar, 290 psi
or 10 MPa, 100 bar, 1450 psi
or 41 MPa, 410 bar, 5,945 psi
depending on code variant selected*
17.5 kPa abs., 175 mbar abs., 2.5 psia
and 2 MPa, 20 bar, 290 psi
or 10 MPa, 100 bar, 1450 psi
or 41 MPa, 410 bar, 5,945 psi
depending on code variant selected*
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