Humidity Sensors
1 Year Limited Warranty

All versions of the Thermalogic humidity sensor/transmitters are limited to a 1-year warranty. The sensing element used in these models is a moisture permeable plastic film. The relative humidity sensor has an inherently limited service life due to degradation by natural airborne chemicals. Long term exposure of the relative humidity sensor to certain chemicals and gases may affect the characteristics of the sensor and shorten its life. For this reason, Thermalogic is unable to extend its normal 4 year warranty to these sensors.

In addition, there are chemicals that will damage the plastic film sensor immediately or over a short span of time and should not be introduced into the atmosphere around the sensor tip nor used to clean any part of the transmitter. This includes the residual vapors remaining after cleaning a confined area where the humidity sensor is mounted. These chemicals include but are not limited to; ammonia or ammonia based cleaning solutions, acetone, toluene or any cleaning solution containing these chemicals, organic solvents, alone or in solution, household and industrial cleaning fluids, such as Fantastic, etc., aggressive chemicals including SO2, H2SO4, H2S, HCL, CL2, etc. (in straight or diluted form), weak acids and bases.

Any sensor/transmitter that has been damaged by exposure to these or similar chemicals cannot be repaired under warranty

Thermalogic model humidity sensor/transmitters are shielded against moderate levels of EMI, such as cellular telephones, portable radios and other low power equipment. However, any device or equipment which subjects the transmitter to high radio frequency fields, such as a nearby TV-Radio tower, or discharges, such as nearby spot-welders or spark-gaps, will probably cause damage and void the warranty.

When installed in close proximity of the ocean of other large bodies of salt water (e.g. Great Salt Lake), a coating of salt (mostly NaCl) may build up on the sensor element over time. NaCl has an affinity for water. The humidity over a saturated NaCl solution is 75%. A buildup of salt delays the response to atmospheric humidity and may destroy the element over time. Please see cleaning guidelines below.

This warranty is contingent upon, but not limited to, proper use of the product by Purchaser. This warranty does not apply to products which have been incorrectly installed or which have been subjected improperly to extreme operating or environmental conditions; to products subjected to modification, tampering, or repair by any party other than THERMALOGIC; or to products damaged by negligence, casualty, improper service, or maintenance. The warranty also does not apply to products damaged during shipment, or as a result of the purchaser's failure to comply with any of the procedures specified in the product's Operators Manual. This warranty does not apply to failure caused by normal wear and tear, or to physical damage to components which may occur during normal use.