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sensing.honeywell.com

Total Error Band should not be confused with “accuracy”, which is actually

a component of Total Error Band. Many competitors simply specify the

accuracy of their device; however, the specification may exclude hysteresis

and temperature effects, and may be calculated over a very narrow range, at

only one point in the range, or at their absolute best accuracy level. It is then

up to the customer to calibrate the device to make sure it has the accuracy

needed for the life of the application.

For more information about Total Error Band, please see the related technical

note, “Explanation of the Total Error Band Specification for Honeywell’s Digital

Humidity/Temperature Sensors.”

InduStRy-leAdIng long-teRm StABIlIty

(1.2 %RH oveR fIve yeARS)*

Competitive humidity sensors need to go through a 12 hour at 75 %RH

rehydration process (which requires special equipment chambers) to correct

reflow temperature offset. Honeywell’s sensor also experiences an offset

after reflow; however, it only requires a five hour rehydration under ambient

conditions (>50 %RH). Honeywell’s industry-leading long term stability

provides the following benefits to the customer.

output*

This typically allows the customer to remove the components associated

with signal conditioning from the PCB to free up space and reduce costs

associated with those components (e.g., acquisition, inventory, assembly).

problems that could occur from having multiple signal conditioning

components across the PCB, as well as simplifies integration to the

microprocessor, eliminating the need for customer-implemented, complex

signal conditioning.

Honeywell’sindustry-leadingTotalErrorBandprovidesthefollowingbenefitstothecustomer:

•

eliminates individually testing and calibrating every sensor, which can increase their manufacturing time

and process

• Supportssystemaccuracyandwarrantyrequirements

• Helpsto

optimize system uptime

• Provides

excellent sensor interchangeability—thecustomercan remove one sensor from the tape,

then remove the next sensor from the tape, and there is no part-to-part variation in accuracy

Honeywell’sindustry-leadinglong-termstabilityprovidesthefollowingbenefitstothecustomer:

• Minimizessystemperformanceissues

• Helpssupportsystemuptimebyeliminatingtheneedtoserviceorreplacethesensorduringitsapplicationlife

• Eliminatestheneedtoregularlyrecalibratethesensorintheirapplication,whichcanbeinconvenientandcostly