Humidity control is an important aspect of any climate control system. Therefore, humidity sensors must be both accurate and dependable. Delta’s humidity transmitters are calibrated at 10 points from 10 to 90% RH for accuracy, eliminating field calibration.
The Duct Units are also extremely dependable, featuring the polycarbonate BAPI-Box 2 which carries an IP66/NEMA 4 rating and remains watertight even after multiple openings of the hinged cover. All Duct Units feature closed cell foam to seal the insertion hole and to absorb vibration. Mounting tabs allow for easy installation to the wall of the duct. The units are built to withstand high humidity and condensation and perform in the real world.
Features & Options
lHumidity Only or Temp./Humidity Combination lEtched Teﬂon Leadwires & Foamback Insulator lWatertight BAPI-Box Enclosure
lReplaceable Filter & Humidity Probe
l2% and 3% RH Accuracies
Humidity control is an important aspect of any climate control system. Therefore, humidity sensors must be both accurate
and dependable. DELTA’s humidity sensors are prescreened
for accuracy, eliminating ﬁeld calibration even when replacing
a sensor or probe. The Duct Units are also extremely dependable, with a watertight BAPI-Box or BAPI-Box 2 enclosure.
All Duct Units feature medical-grade closed cell foam to seal the probe insertion hole and to absorb vibration. Mounting tabs allow for easy installation directly to the wall of the duct. All Duct Units have etched Teﬂon leadwires and are built to withstand high humidity and condensation and perform under real world conditions.
Ordering Information/Part Numbers
Humidity Only Units
ALC/H200-D-BB: 2%RH Duct Humidity Sensor ALC/H300-D-BB: 3%RH Duct Humidity Sensor
Combination Temperature and Humidity Duct Sensor ALC/10K-2-H200-D-BB: 2%RH Duct Temperature and Humidity Sensor ALC/10K-2-H300-D-BB: 3%RH Duct Temperature and Humidity Sensor
Replace -BB with -BB2 at the end of the part # for a watertight BAPI-Box 2 enclosure
10 to 35 VDC (0 - 5 VDC or 4 - 20 mA outputs) 12 to 24 VAC (0 - 5 VDC Output)
UV-resistant polycarbonate, UL 94, V-0 Enclosure Rating: IP 66 Environmental Operation Range:
Temp: -30 °C to 70 °C Humidity: 0% to 100% RH
Impedance Type, ±2% or ±3% RH
10K-2 Thermistor Sensor Speciﬁcations Resistance: 10 kW @ 25°C, -55°C to 150°C range
Standard Accuracy: 0.2°C (±0.36°F) at 0 to 70°C Dissipation Constant: 2.7 mW/°C Stability(drift): Less than ±0.1°C (0.18°F) drift over 10 years.
22 mA max. DC (0 - 5 VDC or 4 - 20 mA Outputs)
0.53 VA max. AC (0 - 5 VDC Output)