The Advanced Ceramic Technology design overcomes the limitations of other resistancebased humidity sensors that utilize watersoluble polymer coatings. The Advanced Ceramic Technology enables these sensors to recover fully from condensation. This allows the sensor to maintain its accuracy over a longer period of time. Despite its accuracy, the Advanced Ceramic Technology sensor and related circuitry is economical.

Accuracy is maintained over the operating range using a thermistor for temperature compensation. The additional benefits of this technology can be employed for less than many inferior types of sensors.

Each ACI/ENT Enthalpy transmitter is calibrated at 3 different points, using an NIST Traceable Temperature and Humidity Controlled Environmental Chamber. Special calibration may be done for elevations above 2000 feet. An optional enthalpy mounting kit is available. See the accessories section for more information regarding the Enthalpy mounting Kit.

All ACI/ENT transmitters come with a two year factory warranty. Please contact ACI for more information regarding the ACI/ENT Enthalpy Transmitter.

Product Specifications

Supply Voltage

24 to 36 VDC

Long Term Stability

Less than 2% RH Drift

/

5 Years

Operating Range

-40 to 140 F

(-40 to 60 C)

Sensitivity

0.1% RH

Output

2-wire, 4 to 20 mA Loop Powered

Repeatability

0.5% RH

Enthalpy Accuracy

+/

-1 BTU @ 77 F

Hysteresis

Less than 0.4% RH

Temperature Accuracy

+/

-0.36 F

(0.2 C)

from 0-70 C

Operating RH

0 to 100% RH

RH Accuracy

+/

-3% @ 77 F

Standard Elevation

1000’ above sea level