4
Introduction
1.1
1. Introduction
1.2
Probe Assembly
Preparing the Probe and Sensor
ODO RTU assemblies feature integral sensors — this means that these sensors cannot be removed from the probe and cable. Sensor
caps are user-replaceable and need to be changed out about once per year.
NOTE:
Each ODO cable assembly and sensor cap includes an instruction sheet with important information unique and
specific to each individual sensing cap. These are important because they include calibration coefficients needed for
proper setup.
NOTE:
A new cable/probe assembly already has a sensor cap installed and the sensor cap coefficients are preloaded into
the probe at the factory.
1.
Remove the metal probe guard from the probe by turning it counterclockwise.
2.
Remove the red storage cap which, contains a moist sponge, from the end of the probe by pulling it straight off the sensor.
Save this to use later for long-term storage.
3.
Reinstall the probe guard by sliding it carefully over the sensor and then threading it onto the cable assembly with a
clockwise rotation.
CAUTION:
It is important to always store your sensor in a moist environment so the sensor cap does not dry out. A grey
calibration/storage sleeve is shipped with your cable assembly for an easy storage option. Simply moisten
the sponge with a small amount of clean water and slide the sleeve over the probe guard to create a moist
atmosphere for the sensor.
Figure 1
ODO probe and cable assembly
1
Probe
2
Sensor
3
Sensor Cap
1
2
3
A
