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ACI A/RH Series Relative Humidity Transmitters

Relative Humidity Transmitters
A/RH Series

The A/RH Series Relative Humidity transmitters, convert a resistance change to a linear 4 to 20 mA, 0 to 5 VDC, or 0 to 10 VDC output. The current signal may be transmitted over long distances on twisted-pair wire and will not be affected by the lead wire resistance or electrical noise.
The Advanced Ceramic Technology design overcomes the limitations of other resistance-based humidity sensors that utilize water-soluble polymer coatings. The Advanced Ceramic Technology enables these sensors to recover fully from condensation. This also allows the sensor to maintain its accuracy over a longer period of time. Despite its high accuracy, the Advanced Ceramic Technology sensor and related circuitry is economical.
Accuracy is maintained over the entire operating range, using a thermistor for temperature compensation.
Each A/RH Series humidity transmitter is calibrated using a NIST Traceable Temperature /Humidity Chamber. Both three and five point calibration certificates are a vailable for 1% and 2% RH accuracies but they must be ordered separately.

•Single point Field Calibration
•Field selectable output signals
•1%, 2%, 3%, and 5% Accuracies
•Low Drift
•Highly Repeatable
•Calibration Certificates Available
•Building Automation Systems
•Light Industrial
•Humidity Chambers
•Data acquisition

Select a link under the "item" tab below to order.

Table 1Table 2Table 3
Table 1Accuracy
RH1+/- 1%
RH2+/- 2%
RH3+/- 3%
RH5+/- 5%
3 PT NIST Certificate3 point Calibration Certificate @ 20, 50 and 80% RH
5 PT NIST Certificate5 point Calibration Certificate w/standard points choosen by ACI
Table 2Range if 1%
20% 40-60%Please Specify a 20% Span (i.e. 40-60%)
Table 3Configuration
OOutdoor Air
SPStainless Plate

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