266CRx, 266JRx, 266CSx, 266JSx | OI/266CXX/266JXX/HART-EN Rev. B 73
14 Specifications
14.1 Operating limits 266CRx/JRx
SEE ALSO DATA SHEET DS/S26 FOR INFORMATION ON
OTHER POSSIBLE RESTRICTIONS BASED ON DIAPHRAGM
SEAL VERSIONS.
14.1.1 Pressure limits
Gauge pressure limits
The transmitter models 266CRX/JRX can operate without
damage within the following overpressure limits:
Sensors Filling fluid Gauge pressure limits
C to R Silicone oil 0.07 kPa abs., 0.7 mbar abs.,
0.5 mm Hg
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
C to R Fluorocarbon
(Galden)
17.5 kPa abs., 175 mbar abs.,
131 mmHg
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
Static pressure limits
The transmitter models 266CRX/JRX can operate within the
specifications with the following overpressure limits:
Sensors Filling fluid Static pressure limits
C to R Silicone oil 3.5 kPa abs., 35 mbar abs., 0.5 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
C to R Carbon fluoride
(Galden)
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
The overpressure limits and upper static pressure limits can be
lowered by means of the nominal pressure rating of the
diaphragm seal flange; see remote seal data sheet
DS/S26.seal
Test pressure
The transmitters can withstand a pressure test with the
following line pressure without leaking:
Model Test pressure
266CRX / JRX 1.5 x nominal pressure (static
pressure limit) simultaneously on
both sides
1)
1) or double the value of the pressure sensor flange pressure stage, depending on
which value is less. Meets hydrostatic test requirements of ANSI/ISA-S 82.03.
14.1.2 Temperature limits °C (°F)
Environment
This is the operating temperature.
All models Ambient temperature limits
Silicone oil -40 and 85 °C (-40 and 185 °F)
Fluorocarbon (Galden) -40 and 85 °C (-40 and 185 °F)
All models Ambient temperature limits
Integral LCD display
1)
-40 and 85 °C (-40 and 185 °F)
Viton gasket -20 and 85 °C (-4 and 185 °F)
PTFE gasket -20 and 85 °C (-4 and 185 °F)
1) If may no longer be possible to read the LCD display clearly below -20 °C (-4
°F) and
above 70 °C (158 °F).
IMPORTANT (NOTICE)
For applications in potentially explosive environments, the
temperature range specified on the certificate / approval which
depends upon the type of protection sought shall apply.
Process
All models Process temperature limits
Silicone oil -40 and 121 °C (-40 and 250 °F)
1)
Fluorocarbon (Galden) -40 and 121 °C (-40 and 250 °F)
2)
Viton gasket -20 and 121 °C (-4 and 250 °F)
PTFE gasket -20 and 85 °C (-4 and 185 °F)
1) 85 °C (185 °F) for applications under 10 kPa, 100 mbar abs., 1.45 psia up to
3.5 kPa
abs., 35 mbar abs., 0.5 psia
2)
85 °C (185 °F) for applications below atmospheric pressure
up to
17.5 kP
a abs., 175 mbar abs., 2.5 psia
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