266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER | OI/266CXX/MODBUS-EN REV. A 87
13 Specification
Note
The device data sheet is available in the ABB download area at
www.abb.com/pressure.
Operating limits 266CRx
Note
See also data sheet DS/S26 for information on other possible
restrictions based on diaphragm seal versions.
Pressure limits
Gauge pressure limits
The transmitter models 266CRX can operate without damage
within the following overpressure limits:
Sensors Filling fluid Gauge pressure limits
C to N 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 N 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 can operate within the
specifications with the following overpressure limits:
Sensors Filling fluid Static pressure limits
C to N 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 N 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 of the diaphragm seal
flange; see remote seal data sheet DS/S26.
Test pressure
The transmitters can withstand a pressure test with the
following line pressure without leaking:
Model Test pressure
266CRX 1.5 × nominal pressure (static pressure
limit) simultaneously on both sides*
* Or double the value of the pressure sensor flange pressure rating,
depending on which value is less. Meets hydrostatic test requirements of
ANSI/ISA-S 82.03.
Temperature limits °C (°F)
Environment
This is the operating temperature.
All models Ambient temperature limits
Silicone oil Æ40 and 85 °C (Æ40 and 185 °F)
Fluorocarbon (Galden™) Æ40 and 85 °C (Æ40 and 185 °F)
All models Ambient temperature limits
Integral LCD display* Æ40 and 85 °C (Æ40 and 185 °F)
Viton® gasket Æ20 and 85 °C (Æ4 and 185 °F)
PTFE gasket Æ20 and 85 °C (Æ4 and 185 °F)
* If may no longer be possible to read the LCD display clearly below
Æ20 °C (Æ4 °F) and above 70 °C (158 °F).
Note
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 Æ40 and 121 °C (Æ40 and 250 °F)*
Fluorocarbon (Galden™) Æ40 and 121 °C (Æ40 and 250 °F)**
Viton® gasket Æ20 and 121 °C (Æ4 and 250 °F)
PTFE gasket Æ20 and 85 °C (Æ4 and 185 °F)
* 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
** 85 °C (185 °F) for applications below atmospheric pressure
up to 17.5 kPa abs., 175 mbar abs., 2.5 psia
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