Hach Sigma 950, Instrument Manual, Page: 45 / 146

43
Sensor Installation
3. Lift the sensor out of the water and hold it in the air in the same orientation that you
selected in the previous step (horizontal or vertical) (
Figure 8 ). Press
ACCEPT
to
continue.
Figure 8 Lifting the Sensor Out of the Water
4. Follow the either the vertical or horizontal procedure below.
Vertical Orientation Only
a. Place the sensor under at least 16 cm (6 in.) of water in a vertical orientation.
Make sure the sensor is stable and not moving around. Press
ACCEPT
to
continue.
b. Carefully measure the depth (D1) from the surface of the water to the first weld
mark that encircles the sensor body just above the breather vent holes (
Figure 9 ).
The weld mark indicates the location of the internal diaphragm.
c. Enter the depth (D1) using the numeric keypad then press
ACCEPT
when done.
Figure 9 Measuring Submerged Depth, Vertical Orientation
Horizontal Orientation Only
Note: Always check the Level Adjust when reinstalling the flow meter following a calibration.
a. Place the sensor under at least 16 cm (6 in.) of water in a horizontal orientation.
Make sure the sensor is stable and not moving around. Press
ACCEPT
to
continue.
Horizontal Vertical
1 Gray band 2 Breather vents 3 Detachable nose cone