The Telaire Humitrac Humidity Transmitter is a relative humidity and temperature transmitter designed to serve the building automation/HVAC market, as well as a wide variety of general purpose relative humidity monitoring applications. All models of the HumiTrac incorporate a NIST traceable, field-replaceable sensor tip, a rugged capacitive sensing element capable of full-scale 0 to 100% relative humidity measurement, and a host of field configurable output options.
The HumiTrac features a National Institute of Standards and Technology (NIST) traceable, field-replaceable sensor tip module that allows the end user to replace the sensor on-site while maintaining ±2% RH accuracy and NIST traceability. The user simply powers off the unit, installs the new sensor module, and powers back the unit. All necessary calibration constants are stored in the memory of the HumiTrac's sensor module and uploaded to the humidity/temperature transmitter instantly. This virtually eliminates the need for time consuming and costly factory calibration, while reducing downtime during service intervals to near zero.
The HumiTrac relative humidity and temperature transmitter from Telaire utilizes a rugged capacitive sensor that provides full-scale 0-100% RH measurement with unsurpassed response times, linearity, and stability. Recovery to condensation and chemicals is excellent and an integrated filter plus conformal-coated module electronics ensure long life. All sensors undergo a ten hour digital calibration, certified against a primary NIST reference standard. Signal conditioned temperature versions maintain specified RH accuracy across the full operating range of -40 to 140°F (-40 to 60°C).
These RH/temperature transmitters from the HumiTrac Series are designed to be highly configurable in the field or in your warehouse. By minimizing the necessary number of configurations, distributor inventory costs are reduced and maximum flexibility is provided to the installer. All versions of the HumiTrac feature field-selectable outputs (0 to 5V, 0 to 10V, 4 to 20mA), and passive temperature versions incorporate both a 3K and 10K S thermistor. Simple adjustment of slide switches is all that is required. Signal-conditioned temperature versions are available scaled from 32 to 122°F (0 to 50°C) or -40 to 140°F (-40 to 60°C). Custom ranges are available upon request for high volume applications. The HumiTrac is available in humidity accuracies of ±2%, ±3% or ±5% and is offered in wall mount, duct mount, and outdoor air configurations.
All HumiTrac configurations feature rugged flame retardant, UL-94V ABS plastic. Duct and outdoor air versions provide excellent weather resistance (IP42 rated). Special care has been taken in the design of the wall mount enclosure to provide enhanced airflow, increasing sensor response time and virtually eliminating the potential of "self-heating" by transmitter electronics that can lead to decreased accuracy measurements.
HumiTrac transmitters feature large, removable, pluggable terminal blocks, which eliminate the need to wire in a confined space and allow the unit to be pre-wired separate from the electronics (an especially attractive feature in unfinished construction, where exposed sensors and electronics could be damaged by moisture, drywall dust, and paint). All models of the HumiTrac incorporate a retaining wire that attaches the cover to the base, allowing the installer to wire the unit without using an extra hand to hold the cover.
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