NovaLynx Corporation
225-RHP-2Sxx
Page 5
January 2021
4
SPECIFICATIONS
5
INSTALLATION
5.1
Outdoors
For outdoor applications, use the U-bolt to clamp the sensor to a vertical pipe up to 1 ½" (38mm) in
diameter.
The
380-RHRS Solar Radiation Shield
must
be in place to protect the tip of the probe from
rain or sunshine. Remove the cover of the enclosure, then route your cable through the cord grip on
the bottom of the enclosure. Follow the wiring diagram to make the connections to the screw terminal
block, then tighten the cord grip, leaving some slack inside. Use cable ties to secure the cable to the
support pipe. Complete the installation by connecting to your monitoring system.
5.2
Indoors
The sensor may be mounted indoors without a solar radiation shield. It should be mounted in a
location that receives adequate air flow for proper operation. The transmitter should be mounted such
that the cord grip points down to prevent moisture from entering. The U-bolt can be removed and the
mounting bracket bolted to a wall or post.
5.3
Duct Mount
The tip of the probe is sometimes inserted into an HVAC duct. In this application, drill a 1" diameter
hole in the duct at the desired location (away from fans, corners, heating and cooling coils, and other
equipment that will affect the measurement of the relative humidity). Insert the probe until the
225-RHP-2Sxx Temperature and Relative Humidity Sensor
Relative Humidity Range
0 to 100% RH
Temperature Range
-40 to 140°F (-40 to 60°C)
Accuracy, RH
±2% 10 to 90% RH @ 25°C
Accuracy, Temperature
±0.9°F @ 72°F (±0.3°C @ 25°C)
Hysteresis
±1%
Repeatability
±0.1% typical
Temperature Limits
-40 to 140°F (-40 to 60°C)
Storage Temperature
-40 to 176°F (-40 to 80°C)
Compensated Temperature Range
-4 to 140°F (-20 to 60°C)
225-RHP-2S11
: 10 to 35 VDC; Output signal: 4 to 20 mA (loop powered).
225-RHP-2S33
: 15 to 35 VDC or 15 to 29 VAC; Output signal: 0 to 5 V @ 5 mA max.
Response Time
15 seconds
Electrical Connections
Removable screw terminal block
Drift
<1% RH/year
RH Sensor
Capacitance polymer
Temperature Sensor
Solid state band gap
Enclosure / Rating
Polycarbonate / NEMA 4X (IP65)
Cable
not included
Transmitter only: 1 lb (.45 kg) / 2 lbs (.9 kg)
Transmitter and Solar Radiation Shield: 2 lbs (.9 kg) / 3 lbs (1.4 kg)
Agency Approvals
CE
Power Requirements
Weight / Shipping
