Campbell Scientific HS2 and HS2P (HydroSense II) User Manual
Page 33
HS2 and HS2P
The procedure for replacing the rods is as follows:
1. If using the HS2P, slip off the plastic bumper.
2. Use the wrench (pn 26156) to unscrew the rods.
3. Ensure that the threads of the replacement rods and the sensor body are
clean and free from damage.
4. Apply thread locking compound (pn 13665) on the threads of the
replacement rods.
Use the thread locking compound sparingly. A thick coating
may affect measurements. The small tube of Loctite
®
222MS Threadlocker that is shipped with the HydroSense II
is enough to treat several sets of rods.
5. Use the wrench (pn 26156) to screw in the rods. Full contact between the
rod’s nut and sensor body is required for proper operation.
Do not over tighten the rods. This can damage the threaded
inserts of the sensor head, permanently damaging the
sensor.
6. If using the HS2P, put on the plastic bumper.
7. Wait 3 to 12 hours before using the HydroSense II to allow the thread
locking compound to cure. The required curing time depends on
temperature. Allowing the threading compound to cure prevents loosening
of the rods.
CAUTION
CAUTION
Wrench
Rod
Bumper
Sensor Head
25