COMET SYSTEM, s.r.o.
Bezrucova 2901
756 61  Roznov pod Radhostem
CZECH REPUBLIC
Tel.: +420 571 653 990

E-mail: info@cometsystem.com


 

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T7418 Interior temperature, humidity, bar. pressure transmitter - RS485 output

code: T7418
Ambient temperature, humidity, atmospheric pressure transmitter. Indoor use. E.g. for environmental monitoring.

For exacting interiors in building energy management and HVAC systems. Are designed for easy installation on ordinary KU68 wiring boxes for household switches and sockets.

Included in delivery:


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Features

Degrees Celsius and Fahrenheit are user selectable. Transmitter contains a microprocessor based control circuitry in a plastic case with connection terminals and sensors. Large dual line LCD for simultaneous display of T+RH or other humidity interpretation is an advantage. Display is possible to switch off. Computerized design ensures temperature compensation of the humidity sensor and fail indication. State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitters are designed for use in non-aggressive environment. 

APPLICATIONS - measuring and control of air humidity at:

  • building HVAC management
  • building HVAC automation
  • warehouses
  • glasshouses
  • manufacturers
  • museums, archives, galleries
  • air-conditioned rooms
  • weather stations

Measured values are converted to RS485 serial output. Transmitter circuitry is galvanically isolated from power circuitry to prevent collision in RS485 network.

Serial output RS485 - 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. Communication speed is 110 to 115200Bd.

SOFTWARE:

  • Comet Database
    Complex solution for data acquisition and analysing. Easy to use and high flexible database software for Comet Transmitters and Regulators.


  • T-Sensor software
    Free configuration utility for Comet Transmitters and Regulators.

  • SensorReader software
    Basic data acquisition utility for Comet Transmitters and Regulators. Software is free for download.

  Online Monitoring system with RS485/232 sensors

Technical Data

Technical parameters Value
Output RS485
Measured Value Temperature + Relative Humidity + Atmospheric Pressure
Construction Type Interior
Design Interior
Temperature Measuring Range -10 to 50 °C
Relay Output No
Two-State Input No
Lcd Display Yes
PoE No
Relative humidity range 5 to 95% RH
Accuracy of relative humidity measurement ±2.5% relative humidity from 5 to 95% at 23°C
Accuracy of temperature output ±0.5°C
Available temperature units degrees Celsius, Fahrenheit
Accuracy and range of dew point temperature output - for more details see graphs ±1.6°C at ambient temperature T<25°C and RH>30%
range -60 to +80 °C
Accuracy and range of absolute humidity output ±1.5g/m3 at ambient temperature T < 25°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 ±2.2g/kg at ambient temperature T < 35°C
range 0 to 995 g/kg
Accuracy and range of specific enthalpy output ±3.5kJ/kg at ambient temperature T < 25°C
range: 0 to 995 kJ/kg
Maximum measuring pressure range 600 to 1100hPa
Accuracy of pressure measurement ±(1,3hPa+0.06% from adjusted output span) at 23°C from 800 to 1100hPa
Available pressure units hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in2
Communication protocol ModBus RTU, ARION and Advantech ADAM compatible protocol
Communication speed 110 to 115200 Bd
IP protection IP20
Power 9-30Vdc, power consumption approximately 0.5W
Dimensions 88 x 106 x 33 mm (W x H x D)
Material of the case ABS
Color white
Weight approximately 150g
Warranty 3 years
T7410 Industrial temperature, humidity, bar. pressure transmitter - RS485 output T7410 Industrial temperature, humidity, bar. pressure transmitter - RS485 output
code: T7410
Ambient temperature, humidity, atmospheric pressure transmitter. Outdoor, indoor use.
H7430 temperature, humidity, pressure regulator with two relay and RS485 outputs H7430 temperature, humidity, pressure regulator with two relay and RS485 outputs
code: H7430
Humidity, temperature, atmospheric pressure transmitter with two relay outputs. Outdoor, indoor use.