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Programmable transmitter of temperature, relative
humidity and other derived humidity values
T3319, T3319P, T3419, T3419P
Programmable transmitter of atmospheric pressure,
temperature, relative humidity and other derived
humidity values
T7311, T7411
with RS232 / RS485 serial output
and external probe
Instruction Manual
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Table of Contents
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Summary of Contents for Comet T3319
- Page 1 Programmable transmitter of temperature, relative humidity and other derived humidity values T3319, T3319P, T3419, T3419P Programmable transmitter of atmospheric pressure, temperature, relative humidity and other derived humidity values T7311, T7411 with RS232 / RS485 serial output and external probe Instruction Manual...
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Page 2: Device Setting From The Manufacturer
, mmHg, inH O and kPa too. It is possible to set pressure correction for altitude (offset). Device setting is provided by user’s software, see latter. Devices T3319(P) and T7311 communicates via link RS232 without galvanic isolation, devices T3419(P) and T7411 via galvanic isolated link RS485. -
Page 3: Device Installation
Similar effect can occur under water aerosol conditions. Don’t connect device while power supply voltage is on. Interconnection terminals for T3319(P), T3419(P), T7311 and T7411 devices are accessible after unscrewing four screws and removing the lid. Measuring temperature, relative humidity and eventually pressure sensors are non-removable device parts. - Page 4 Dimensions – T3319(P), T7311 transmitter with RS232 serial output probe for compressed air measurement Typical application wiring of T3319(P) and T7311 power from communication port power from external voltage source IE-SNC-T33(4)19+T73(4)11-09...
- Page 5 Dimensions – T3419(P), T7411 transmitter with RS485 serial output probe for compressed air measurement Typical application wiring of T3419(P), T7411, connection of terminals IE-SNC-T33(4)19+T73(4)11-09...
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Page 6: Info Mode
Dimensions – T3319L, T3419L, T7311L, T7411L Connection: see Appendix B Info mode If in doubt of setting of installed device, verification of its address is enabled even without using computer. Power should be connected. Devices with RS232 interface have address always set to one. -
Page 7: Description Of Communication Protocols
Setting of pressure correction for altitude For devices T7311 and T7411 only! If there is necessary to read value of atmospheric pressure corrected with respect to altitude, it is possible to set corresponding pressure offset for this altitude. It is possible to do it with Users software. This value is then automatically added to measured pressure value. - Page 8 Modbus registers of the device Address Address Variable Unit Format Size Status [hex] [dec] [°C] [°F]* Measured temperature 0x0031 Int*10 BIN16 Measured relative humidity 0x0032 Int*10 BIN16 Computed value 0x0033 Int*10 BIN16 Address of device 0x2001 8193 BIN16 R/W* Code of communication speed 0x2002 8194 BIN16...
- Page 9 should respond. During communication data is transferred in ASCII format (in characters). Each Byte is sent as two ASCII characters. Device supports communication speed from 1200Bd to 115200Bd, parameters of communication link are 1 start bit + eight bit data word (LSB first) + 1 stop bit, without parity.
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Page 10: Error States Of The Device
pressure at kPa (depended by device type). For atmospheric pressure correction to altitude setting there is Users software Tsensor. Jumper and button If communication with HWg Poseidon unit is selected, the function of jumper and button is as follows: • Jumper opened and button shortly pressed – device goes to Info mode, see chapter „Info mode“. -
Page 11: Readings On Lcd Display
Error 4 - there is a reading „Err4“ on LCD display. It is internal device error during pressure sensor initialization. Under this condition device does NOT measure atmospheric pressure. Value read from device is -999.9. Pressure sensor is probably damaged. It is a serious error, contact distributor of the device. - Page 12 Measuring temperature and humidity range is limited in accordance with the graph below ! The value computed from air temperature and relative humidity: Dew point temperature -60 to +80 °C (-76 to 176 °F) Range: ±1.5 °C (±2,7 °F) at ambient temperature T < 25°C (77°F) and relative Accuracy: humidity RH >30%, for more details see graphs below IE-SNC-T33(4)19+T73(4)11-09...
- Page 13 Response time with stainless steel mesh sensor cover (F5200B) and bronze sensor cover (F0000 - selectable option), air flow approximately 1 m/s: temperature: T3319(L), T3419(L), T7311(L), T7411(L) t90 < 6 min (temperature step 20 °C (36 °F) ) T3319P, T3419P t90 < 16 min (temperature step 20 °C (36 °F) ) relative humidity: t90 <...
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Page 14: End Of Operation
Consumption: T3319, T7311 (RS232) . . . 6mA, T3419, T7411 (RS485) . . . max 0.5 W Protection: T3319(L)(P), T3419(L)(P): electronics IP65, sensors are located in cover with IP40 protection T7311(L), T7411(L): electronics IP54, sensors are located in cover with IP40 protection Filtering ability of the sensor cover: 0.025 mm... -
Page 15: Technical Support And Service
Technical support and service Technical support and service is provided by distributor. For contact see warranty certificate. Appendix A Connection of transmitters with RS485 output to the PC The ELO E214 converter is an optional accessory for connection of transmitter with RS485 interface to the PC via USB port. - Page 16 Appendix C The probe for measuring the moisture of compressed air should be placed directly on the pressure pipelines to achieve higher measurement accuracy and fast response times. But they are cases where such placement is not possible. The reason is the high air speed, high temperature, high pollution, small diameter pipes, etc.
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