NOVUS RHT-P10-485-LCD User Manual
Transmitters RHT
RHT
TEMPERATURE AND HUMI DITY TR AN SMI TTE R
INSTRUCTIONS MANUAL V1. 0x B
1
247
ement error can be
up to 8s in smooth air movement
Product appropriate for applications which
Electronic module case: IP65; Sensor
Configuration Software for Windows 98, NT,
Configures, reads and exhibits data on the
-WM-485-LCD,
-DM-485-LCD and RHT-P10-485-LCD
–
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 di agnostic pr ocedure.
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. Che ck 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 s ide of the transmitter:
Figure 1 – Transmitter front
2 SPECIFICATIONS
Operating temperat ure of
the transmitter
Electromagnetic
compatibility
Sensor measur ing
range
Measurement accuracy
Measuring resolut ion
Response time
Sampling interval 3 seconds
From 0 °C to 70 °C
Sensor and Rod (RHT-DM): See Figure 3.
EM 61326:2000
Temperature: –40.0 °C to 100.0 °C.
Relative Humidity (RH): 0.0 to 100.0 % RH.
Dew Point: –40.0 °C and 100.0 °C
See Figure 3.
Note: a small measur
eliminated adjusting the OFFSET parameter of
the software.
Temperature: 0.1 °C.
14 bits (16383 levels)
Relative Humidity (RH): 0.1 %.
12 bits (4095 l evels)
Temperature: up to 30s in slow air move ment.
Humidity:
(No Condensi ng)
(20 to 80 % RH).
Communication Indicator (COM): Indicates when the device is receiving
data from the Modbus netw ork.
Button
communication paramet ers and for sc reen changing.
Temperature: Value of measured temperature.
Relative Humidity: Value of measured relative humidity.
Communication Address: Value programmed for identifying the transmitter
of the Modbus network. Programmable between
(Programming): Button used for configuration of the
Figure 2 – Second transmitter screen
NOVUS AUTOMATION 1/6
Power supply 12 Vdc to 30 Vdc, consumption < 16 mA
Case Polycarbonate
require prot ection clas s up to IP65.
Protection class
capsule: IP40
Dimensions 60 x 70 x 35 mm
2000, XP and Vista.
DigiConfig software
operation environment
Menus in Port uguese, En glish or Spani sh.
screen.
and
.
2.1 Measurement Accuracy and Operational Lim its of the Sensors:
RHT-WM-485-LCD, RHT-DM-485-LCD and RHT-P10-485-LCD Transmitters
Figure 3 - Accuracy of humidity and temperature measurement
3 MECHANICAL INSTALLATION
The RHT-DM-485-LCD (Duct Mount) model transmitter must be installed
with a flange. This flange is first screwed onto the duct wall, and the
transmitter probe is then inserted into the flange central hole and locked.
Figure 4 below shows flange dimensions and holes. Available in stainless
steel or poly ami de 6. 6.
Figure 4 - Flange for fixation of the RHT-DM-485-LCD model
The probe is made in stainless steel, with standard lengths of 150 mm or
250 mm.
The RHT-WM-485-LCD (Wall Mount) model is designed for wall mounting.
Removing the transmitter cover gives the user access to two bores for fixing
the base, as shown in Figure 6. The transmitter must be fixed with the
sensor capsule directed downwards in order to assure the specific
accuracy and protection level.
Figure 6 - Fixing bores and dimensions of the RHT-WM-485-LCD model
Figure 7 – Dimensions of the RHT-WM-485-LCD model
Figure 5 – Dimensions of the RHT-DM-485-LCD model
NOVUS AUTOMATION 2/6
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