266CRH / 266CRT, 266CSH / 266CST MULTIVARIABLE PRESSURE TRANSMITTER  |  OI/266CXX/MODBUS-EN REV. A  21 
 
 
 
Mounting dimensions – Model 266CSx 
 
 
 
Transmitter with barrel housing – horizontal flanges 
M10019-02
29 (1.14)
18 (0.71)
18 (0.71)
210 (8.28)
60 (2.36)**
72 (2.83)***
56 (2.21)
53 (2.09)
12 (0.47)
90 (3.54)
33 (1.30)
65 (2.53)
41 3 (1.63),
9 (0.35)
*
142 (5.59)
179 (7.02)
91 (3.58)
145 (5.70)
1
2
3
4
5
10
6
7
8
9
 
1 Push buttons 
2 Name plate 
3 Certification plate 
4  Vent / drain valve 
5 Process connection 
 
6 Terminal side 
7  LCD display housing cover 
8 Electronics side 
9  Process flange adapter 
0  Space for removing the cover 
*  54 mm (2.13 in) via ¼-18 NPT process flanges; 
51 mm (2.01 in), 54 mm (2.13 in) or 57 mm (2.24 in) via ½-14 NPT adapter flanges. 
  Note 
Process connection and seal groove satisfy IEC 161518. 
Thread for attaching adapter flanges or other components (for example manifold) on the process flange: A16-20 UNF. 
**  With screw plug 
***  With vent / drain valve 
Figure 8:  Barrel housing – horizontal flanges, Dimensions in mm (in)