Temperature, humidity, barometric pressure sensors with serial interface RS485 or RS232

 humidity transmitter

Measured temperature, barometric pressure, relative humidity, dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy is converted to digital serial output with the RS485 or RS232 link parameters. The RS485 transmitter circuitry is galvanically isolated from power circuitry to prevent collision in RS485 network.
Large dual line LCD for display of temperature, humidity, pressure or other calculated humidity interpretation is an advantage. Computerized design ensures maximum long term stability and fail indication. The transmitter works with ModBus RTU communication protocol or with Advantech ADAM compatible protocol. Protocol is user selectable in special configuration mode by means of the PC. Serial link enables to read actual readings and modify transmitter configuration. Instrument works always in slave mode, i.e. responds only to master device query. Transmitters have the address space available from 1 to 255.
The Tx31x RS232 transmitters can be powered directly from the COM port of the PC or from external ac/dc adapter.

Ask more information on availability of other communication protocols.

State-of-the-art capacitive polymer humidity sensor excels in mechanical stress, temperature shock, dew resistance as well as in large linearity range and low hysteresis. Transmitters are designed for use in non-aggressive environment.

APPLICATIONS - measuring of temperature, humidity, pressure at:

COMMON TECHNICAL PARAMETERS
Supported temperature units: degrees Celsius, degrees Fahrenheit
Temperature sensor: RTD Pt1000-3850ppm/°C
Operating temperature range of the case with electronics: -30 to +80°C,
recommended to switch OFF LCD display over +70°C
Accuracy: ±0.4°C
Measuring relative humidity range: 0 to 100%
Accuracy: ±2.5% RH from 5 to 95% at 23°C
Accuracy and range of dew point temperature output: ±1,5°C at ambient temperature T<25°C and RH>30%
range -60 to +80 °C
Accuracy and range of absolute humidity output: ±3g/m3 at ambient temperature T < 40°C
range 0 to 400 g/m3
Accuracy and range of specific humidity output: ±2g/kg at ambient temperature T < 35°C
range 0 to 550 g/kg
Accuracy and range of mixing ratio output: ±2g/kg at ambient temperature T < 35°C
range 0 to 995 g/kg
Accuracy and range of specific enthalpy output: ±3kJ/kg at ambient temperature T < 25°C
range: 0 to 995 kJ/kg
Accuracy and range of barometric pressure output: ± 1.3hPa at 23°C
range: 600 to 1100hPa
Supported pressure units: hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in^2
Temperature compensation of the humidity sensor: from -30 to +125°C
Power: 9 to 30 V DC,
power consumption with RS485 approximately 0.5W,
current consumption with RS232 approximately 6mA
Protection - temperature and humidity transmitters: IP65 electronics with terminals,
IP40 humidity and temperature sensors
Protection - transmitters measuring pressure: IP54 electronics with terminals,
IP40 humidity and temperature sensors
Filtering ability of sensor cover: 0.025mm
Communication protocol: ModBus RTU and Advantech ADAM compatible protocol
Hygrometer - communication protocol in pdf Description of communication protocols in pdf format
Communication speed: 110 to 115200 Bd
Warranty: two years
TRANSMITTERS WITH RS485 OUTPUT
Communication circuits are GALVANICALLY ISOLATED from power circuitry to prevent collision in RS485 network
Type Measured value Description Manual in pdf format

T3411

humidity transmitter - larger photo
temperature
humidity
Thermometer-hygrometer
outdoor and indoor use

stem length 75mm

maximum range of temperature measurement -30 to +80°C

dimensions
Transmitter - manual in pdf

T3413

humidity transmitter - larger photo
temperature
humidity
Thermometer-hygrometer
duct mount

stem length 150mm

maximum range of temperature measurement -30 to +125°C*
Transmitter - manual in pdf

T3417

humidity transmitter - larger photo
temperature
humidity
Thermometer-hygrometer
bar type

stem length 700mm

maximum range of temperature measurement -30 to +125°C*
Transmitter - manual in pdf

T3419

humidity transmitter - larger photo
temperature
humidity
Thermometer-hygrometer
T+RH probe with 1 m cable

available also with probe cable lengths 2m or 4m

maximum range of temperature measurement -30 to +105°C*
Transmitter - manual in pdf

T7410

humidity transmitter - larger photo
temperature
humidity
barometric pressure
Thermometer-hygrometer-barometer
outdoor and indoor use

stem length 75mm

Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.

maximum range of temperature measurement -30 to +80°C

dimensions
Transmitter - manual in pdf

T7411

humidity transmitter - larger photo
temperature
humidity
barometric pressure
Thermometer-hygrometer-barometer
T+RH probe with 1 m cable. Available also with probe cable lengths 2m or 4m.
Pressure sensor is located in the control unit with display.

Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.

maximum range of temperature measurement -30 to +105°C*
Transmitter - manual in pdf

T5410

humidity transmitter - larger photo
temperature
barometric pressure
Thermometer-barometer
outdoor and indoor use

stem length 53mm

maximum range of temperature measurement -30 to +80°C

Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.
Transmitter - manual in pdf

T2414

barometer - larger photo
barometric pressure Barometer


Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.
Transmitter - manual in pdf

T0410

temperature Thermometer
TRANSMITTERS WITH RS232 OUTPUT
- communication circuits are GALVANICALLY CONNECTED with power circuitry
Type Measured value Description Manual in pdf format

T3311

humidity transmitter - larger photo
temperature
humidity
Thermometer-hygrometer
outdoor and indoor use

stem length 75mm

maximum range of temperature measurement -30 to +80°C

dimensions
Transmitter - manual in pdf

T7310

humidity transmitter - larger photo
temperature
humidity
barometric pressure
Thermometer-hygrometer-barometer
outdoor and indoor use

stem length 75mm



Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.

maximum range of temperature measurement -30 to +80°C

dimensions
Transmitter - manual in pdf

T7311

humidity transmitter - larger photo
temperature
humidity
barometric pressure
Thermometer-hygrometer-barometer
T+RH probe with 1 m cable. Available also with probe cable lengths 2m or 4m.
Pressure sensor is located in the control unit with display.

Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.

maximum range of temperature measurement -30 to +105°C*
Transmitter - manual in pdf

T2314

barometer - larger photo
barometric pressure Barometer


Barometer enables to measure sea level pressure by setting of correction to altitude above sea level.

Transmitter - manual in pdf

Thermometer - communication protocol in pdf Description of communication protocols in pdf format
Thermometer - calibration procedure in pdf Description of calibration and adjustment procedure in pdf format

* Maximum temperature only at the measuring end with sensors. Relative humidity at temperature over +85°C is limited in accordance with the graph. Near plastic case with electronics maximum temperature is +80°C.

Working range of humidity probe

Figure: Working range of humidity probe

Included accessory:

Traceable calibration certificate from the manufacturer, instruction manual. Calibration certificate with declared metrological traceability of etalons is based on requirements of EN ISO/IEC 17025 standard.
Example of calibration certificate.

Free program TSensor for configuring of the transmitter is ready to download.
Free program SensorReader for logging values from one transmitter to a PC disk file is ready to download. Recorded values in CSV format are easy to process in e.g. Excel.
For acquiring values from several transmitters, third party software is necessary to use. Tested functionality is with programs TIRS.NET, ControlWeb, EasyView.

Transmitters Tx31x with the RS232 output have included 1.6 meter cable for communication with RS232 computer port. The Tx31x RS232 transmitters can be powered directly from the COM port of the PC by means of the included communication cable or from external ac/dc adapter.
OPTIONAL ACCESSORY
Larger photo of data acquisition interface MP006 RS232/USB converter for connection of Tx31x transmitters to the PC via USB port
Larger photo of monitoring system converter MP021 RS485/RS232 converter for for connection of Tx41x transmitters to serial COM port at the PC side, including ac/dc adapter and terminator T485.
Larger photo of humidity transmitter cover F5200 grey sensor cover with filter from stainless steel mesh, filtering ability 0,025mm
Larger photo of humidity transmitter cover F5200B black sensor cover with filter from stainless steel mesh, filtering ability 0,025mm for transmitter T3419
Larger photo of humidity transmitter cover F0000 sintered bronze sensor cover. Filtering ability 0.025mm.
Larger photo of humidity transmitter flange PP4 flat plastic circular flange for duct mounting
Larger photo of humidity transmitter flange PP90 right-angled stain-less steel flange for wall mounting
Larger photo of humidity transmitter gland SP004 plastic gland for direct mounting of the humidity probe to a 29 mm diameter hole
Larger photo of humidity transmitter Dual Lock MD036 self adhesive Dual Lock for easy installation
Tool for easy transmitter connection - larger photo SP006 Tool for easy wire connection to terminals
Solar radation shield Solar radation shield
humidity transmitter adapter - larger photo A1510 ac/dc adapter 230V-50Hz/12Vdc
humidity calibration accessory for calibration and adjustment of humidity transmitter by the user

Ask more information on availability of other communication protocols.

sber dat Transmitters Tx41x are directly compatible with sixteen channel Comet data acquisition system MS.