2 System description
4 | 266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB
Transmitter accuracy and traceability standards
The 266 MODBUS
®
multivariable transmitter is available with two accuracy specifications:
— 0.04% of calibrated DP span (JST) and 0.05% of calibrated SP span (JST)
— 0.075% of calibrated DP span (JSH) and 0.075% of calibrated SP span (JSH)
ABB retains the factory calibration report for each transmitter, which serves as the documentation record of measurements and
accuracy. A factory calibration report (EN10204-3.1G) is included with each transmitter. Copies of the original calibration report
are available upon request during the warranty period of the transmitter. A separate report for the differential pressure and the
static pressure, are also included.
The following factory calibration data is kept for all units.
— Calibration data consisting of 5 points for each pressure sensor
— Proof data consisting of 12 points for each pressure sensor
Transmitter dimensions
Figure 2 and Figure 3 provide the dimensions of the horizontal and vertical flange transmitters for installation purposes.
Figure 2: 266 Horizontal flange transmitter dimensions
3.58 in. (91 mm)
7.07 in. (180 mm)
5.65 in. (144 mm)
0.47 in. (12 mm)
1.63 in. (41 mm)
4.98 in. (126 mm)
2.13 in.
(54 mm)
3.54 in. (90 mm)
2.36 in.
(60 mm)
2.30 in.
(58 mm)
0.69 in.
(18 mm)
2.30 in.
(58 mm)
0.35 in.
(9 mm)
2.18 in.
(55 mm)
1.04 in.
(26 mm)
0.69 in.
(18 mm)
1.22 in. (31 mm)
4.48 in. (113 mm)
8.25 in. (210 mm)
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