NOVUS AUTOMATION
1/6
Transmitters RHT-WM-485-LCD,
RHT-DM-485-LCD and RHT-P10-485-LCD
TEMPERATURE AND HUMIDITY TRANSMITTER –
INSTRUCTIONS MANUAL V1.0x E
1
INTRODUCTION
The
RHT-WM-485-LCD
,
RHT-DM-485-LCD
and
RHT-P10-485-LCD
transmitters include high precision and stability sensors for measuring
temperature and relative humidity. They are microprocessed devices and,
therefore, allow being entirely configured through a RS485 interface, using
the Modbus RTU commands. The
DigiConfig
allows the configuration of all
transmitter features as well as its diagnostic procedure.
The transmitter can be configured or displaying the values of measured
temperature and
Relative Humidity
or the values of measured temperature
and
Dew Point
.
1.1
IDENTIFICATION
The identification label is fixed on the transmitter body. Check if the features
described on this label are in accordance with your order.
The
RHT-WM-485-LCD and RHT-P10-485-LCD
models intended for wall
mounting, while the
RHT-DM-485-LCD
model comes with a probe tip rod for
installation in ducts or through walls.
The following elements are located at the front side of the transmitter:
Fig. 1
– Transmitter front
Communication Indicator (COM)
: Indicates when the device is receiving
data from the Modbus network.
Button
(Programming)
: Button used for configuration of the
communication parameters and for screen changing.
Temperature
: Value of measured temperature.
Relative Humidity
: Value of measured relative humidity.
Fig. 2
– Second transmitter screen
Communication Address:
Value programmed for identifying the transmitter
of the Modbus network. Programmable between
1
and
247
.
2
SPECIFICATIONS
Operating temperature of
the transmitter
From -40 °C to 70 °C
Sensor and Rod (
RHT-DM
): See
Fig. 3
.
Electromagnetic
compatibility
EM 61326:2000
Sensor measuring
range
Temperature: -40.0 °C to 100.0 °C.
Relative Humidity (RH): 0.0 to 100.0 % RH.
(No Condensing)
Dew Point: -40.0 °C and 100.0 °C
Measurement accuracy
See
Fig. 3
.
Note
: a small measurement error can be
eliminated adjusting the
OFFSET
parameter of
the software.
Measuring resolution
Temperature: 0.1 °C.
14 bits (16383 levels)
Relative Humidity (RH): 0.1 %.
12 bits (4095 levels)
Response time
Temperature: up to 30 s in slow air movement.
Humidity: up to 8 s in smooth air movement
(20 to 80 % RH).
Sampling interval
3 seconds
Power supply
12 Vdc to 30 Vdc, consumption < 16 mA
Housing
Polycarbonate
Protection class
Product appropriate for applications which
require protection class up to
IP65
.
Electronic module case: IP65; Sensor
capsule: IP40
Dimensions
60 x 70 x 35 mm
DigiConfig
software
operation environment
Configuration Software for Windows 98, NT,
2000, XP and Vista.
Menus in Portuguese, English or Spanish.
Configures, reads and exhibits data on the
screen.
Accessories
1.5 m long communication cable is part of the
product or can be purchased separately (PN:
8813099999).
