TRUBLUE USER’S MANUA
L
Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS
///
TRUBLUE USER’S MANUA
L
08/2016
Page 15
13. Troubleshooting
1. TRANSDUCER HAS FAILED AND HAS BEEN REMOVED FOR ANALYSIS
Inspect the transducer housing. It should be intact and free of corrosion. If the outer surface of the transducer
is pitted, this could be an indication of galvanic corrosion caused by stray ground currents. If this is the case, the
data logger will probably need to be replaced. It could be that residue has accumulated on the diaphragm,
preventing it from responding properly to pressure changes. The data logger can be cleaned by gently swishing
the transducer back and forth in a bucket of warm, soapy water until the residue softens and washes off. Under
no circumstances should any object or tool be used to remove residue from the sensing diaphragm, which could
cause permanent damage. If cleaning the diaphragm does not solve the problem, the transducer should be
returned to the factory for repair or replacement.
2. TRANSDUCER SUDDENLY FAILS DURING OR JUST AFTER A NEARBY
LIGHTNING EVENT.
This failure is usually caused by overvoltage due to ground transients resulting from a direct or indirect
lightning event. These transients can travel distances of a mile or more.
3. TRANSDUCER RESPONSE TO PRESSURE/LEVEL INPUT CHANGES BECOMES
SLUGGISH.
This is usually a sign that the sensing end of the transducer has become fouled with residue. The transducer
must be removed from service and the sensing diaphragm cleaned as described in Chapter 12.
4. TRANSDUCER OUTPUT READING IS WITHIN LIMI
TS BUT “FREEZES” AT
ONE
POINT. RESPONSE TO PRESSURE/LEVEL INPUT CHANGES BECOMES
SLUGGISH.
In certain environments, “crust” may form over the sensing diaphragm, preventing the sensor from identifying
change in level. Removing the transducer from service and cleaning it (as described in Chapter 12) will generally
solve the problem. Additionally fouling may occur due to marine growth. To combat marine growth we offer an
Anti-Fouling Screen Accessory that is field installable. Marine growth occurs on the copper and eventually erodes
the copper and drops off or the copper is manually removed during routine maintenance. Level transducers
temporarily removed from the well or sump should not be stored dry, but should be stored in a bucket of fresh
water in order to prevent “crust” formation.
5. TRANSDUCER READINGS INCREASE VERY SLOWLY OVER TIME.
Our cable is shipped coiled and consequently takes time to straighten when installed. To prevent cable
stretch with lengths greater than 200 feet (60 m), secure the Kevlar fibers (just under the cable jacket) to your
junction box or other secure object.
