NOVUS AUTOMATION
2/10
1
INTRODUCTION
RHT-Air
comes with a high accuracy and stability sensor to measure
temperature, relative humidity, and dew point. Because it operates with a
microprocessor, it can be fully configured through its USB and IEEE 802.15.4
interfaces.
DigiConfig
software enables for all the device resources to be
configured.
RHT-Air
can be configured to display the temperature, the relative humidity
and the dew point and can display up to two of them simultaneously.
RHT-Air
must be connected to an
AirGate-Modbus
so that it can access its
parameters when in operation.
AirGate-Modbus
will provide Modbus RTU
access to its registers over the IEEE 802.15.4 wireless network.
In addition to battery operation with typical range of 1 year (for an update
interval higher than 60 seconds and stable connection in an IEEE 802.15.4
network),
RHT-Air
can
also be powered by an external source.
1.1
IDENTIFICATION
The following elements appear in the front part of the device:
Figure 1 –
RHT-Air
main screen
Communication Indicator (COM)
: It signals that the device is receiving data
from the Modbus network.
Button
(Programming)
: This button is used to configure the Modbus
address, the Update Interval and to screen changes.
Temperature
: Environment temperature measured by the device.
Relative Humidity
: Relative humidity measured by the device.
Figure 2 –
RHT-Air
second screen
Communication Address
: Programmed value to identify the Modbus
network device. Programmable between
1
and
246
.
2
SPECIFICATIONS
Operating
temperature
-10 °C to 70 °C (14 °F to 158 °F)
Sensor
measurement
range
Temperature: -40 °C to 100 °C (-40 °F to 212
°F)
Relative Humidity (RH): 0.0 to 100.0 % RH
(No condensation)
Dew Point: -40 °C and 100 °C (-40 °F to 212 °F)
Measurements
Accuracy
See
Figure 3
.
Note
: It is possible to perform an
Offset
adjustment using the
DigiConfig
software to
reduce the measurement error found.
Response time
(Sensor)
Temperature: Up to 30 s with air movement at 1
m/s.
Measurements
Accuracy
Humidity: Up to 8 s with air movement at 1 m/s
(20 to 80% RH).
Interval between
updates
Configurable between 15 seconds and 10
minutes (600 s).
Power supply
Power supply: 12 Vcc to 30 Vcc.
Consumption < 100 mA.
Internal battery (included): Lithium 3.6 Vcc 1/2
AA 0,80 Ah.
Omnicell
manufacturer
(ER14250HD model) or
EEMB
manufacturer
(ER14250M model).
Estimated battery
life
Typical: 1 year - Update interval greater than 60
seconds.
Connections
•
Internal
USB Device (micro-B) for
configuration and firmware update.
•
RP-SMA female connector for antenna
(included).
•
M12 connector for external power (cable
included).
Communication
Modbus RTU about Wireless
IEEE 802.15.4
protocol (
AirGate-Modbus
necessary)
.
Wireless
•
Maximum transmission power of 25,11 mW
(14 dBm).
•
Maximum Range: 500 meters line-of-sight in
open field.
•
Data rate: RF 250 Kbps.
•
Receptor sensibility - 92 dBm.
•
Operation band: ISM 2.4 GHz.
•
DSSS Technology (Direct Sequence Spread
Spectrum).
•
OQPSK Modulation (Offset Quadrature
Phase Shift Keying).
•
15 operation channels.
•
AES-CBC-128 (Advanced Encryption
Standard).
Housing
Polycarbonate.
Protection Index
IP40
Dimensions
60 x 70 x 35 mm.
Antenna measurement: 105 mm.
Sensor measurement: 37,2 mm.
Weight
171 grams / 40 grams (cable).
Configuration
software
DigiConfig
– Configuration software for
Windows.
Certifications
CE, FCC, ANATEL (00172-13-07089).
Contains FCC ID: 2AXVWBAIRR-NOVUSAIR
.
Electromagnetic
compatibility
EMC: EN61326-1:2006 CISPR11/EN55011,
EN61000-4-2, EN61000-4-3, EN61000-4-4,
EN61000-4-6, EN61000-4-8
