10 ST 800 Pressure Transmitter User’s Manual Revision 15
Figure 6 – Inline Model Mounted to an Optional Bracket
3. Loosen the set screw on the outside neck of the transmitter one (1) full turn.
4. Rotate the electronics housing a maximum of 180
o
left or right from the center to the position you
require and tighten the set screw 8.9 to 9.7 pound-inches (1.40 to 1.68 Newton meters), using a
4mm metric socket head wrench. See the following example and Figure 7.
Example: Rotating the electronics housing
Figure 7 – Rotating the Electronics Housing
The mounting position of absolute pressure models STA822, STA82L, or a draft range
model STD810 is critical as the transmitter spans become smaller.
A maximum zero shift of 2.5 mmHg for an absolute transmitter or 1.5 inches of water
(inH2O) for a draft range transmitter can result from a mounting position that is rotated 90°
from the vertical. A typical zero-shift of 0.12 mmHg or 0.20 inH2O can occur for a five (5)-
degree rotation from the vertical.
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