Descripción
Comet T7411
- Degrees Celsius and Fahrenheit are user selectable
- Large dual line LCD for simultaneous display of T+RH or other humidity interpretation is an advantage
- Computerized design ensures temperature compensation of the humidity sensor and fails indication
- Transmitters are designed for use in a non-aggressive environment
Industrial Temperature, Humidity, Bar. Pressure Transmitter, RS485 Output
Humidity, temperature transmitter with T+RH probe on the cable. Outdoor, indoor use. For environmental monitoring.
Humidity, temperature probe on a cable. Measured values are also converted to other humidity interpretation: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy. Built-in pressure sensor.
The device is supplied with a T+RH probe with a 1m cable. Cable lengths 2m or 4m are available optionally.
Degrees Celsius and Fahrenheit are user selectable. Transmitter contains a microprocessor-based control circuitry in a durable plastic case with connection terminals and sensors in a filter with stainless steel mesh. 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 fails 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.
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.
Applications
- Building HVAC management
- Building HVAC automation
- Warehouses
- Glasshouses
- Manufacturers
- Museums, archives, galleries
- Air-conditioned rooms
- Weather stations
Software
- Comet Database
- Complex solution for data acquisition and analysis. Easy to use and high flexible Database software for Comet Transmitters and Regulators.
- Sensor RS485/232 utility
- Allows communication of sensors with RS485/RS232 output and sending data to Comet Database.
- T-Sensor software
- Free configuration utility for Comet Transmitters and Regulators.
- Sensor Reader software
- Basic data acquisition utility for Comet Transmitters and Regulators. Software is free for download.
Figure: Relative humidity operating range
Manufacturer Specs
| Comet T7411 Specification | |
| Technical Parameters | Value |
| Output | RS485 |
| Measured Value | Temperature + Relative Humidity + Atmospheric Pressure |
| Construction Type | With T+RH Probe on Cable |
| Design | Industrial |
| Temperature Measuring Range | -30 to 105 °C |
| Relay Output | No |
| Two-State Input | No |
| Lcd Display | Yes |
| PoE | No |
| Relative humidity range | 0 to 100% |
| Accuracy of relative humidity measurement | ±2.5% relative humidity from 5 to 95% at 23°C |
| Accuracy of temperature output | ±0.4°C from -30 to +100°C ±0.4% from reading over +100°C |
| Available temperature units | degrees Celsius, Fahrenheit |
| Accuracy and range of dew point temperature output – for more details see graphs | ±1.5°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 | ±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 |
| Maximum measuring pressure range | 600 to 1100hPa |
| Accuracy of pressure measurement | ±1,3hPa 23°C from 800 to 1100hPa |
| Available pressure units | hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in2 |
| Temperature operating range of case with electronics | -30 to +80°C |
| Temperature operating range of LCD display | readable to operating temperature +70°C, it is recommended to switch OFF the LCD over +70°C |
| Range of humidity sensor temperature compensation | all temperature range |
| Communication protocol | ModBus RTU and Advantech ADAM compatible protocol |
| Communication speed | 110 to 115200 Bd |
| Filtering ability of sensor cover | 0.025mm – filter with stainless steel mesh |
| Protection of the case with electronics | IP54 electronics, IP40 sensors |
| Power | 9-30Vdc, consumption approximately 0.5W |
| Length of the probe cable | 1m, 2m or 4m optionally |
| Dimensions | display unit 88.5 x 114 x 39.5 mm (W x H x D), probe length 88 mm, probe diameter 18mm |
| Weight | approximately 210g – 1m probe |
| Warranty | 3 years |
Tech Specs
Dataloggers / Data Acquisition/Dataloggers for Environmental Variables/Temperature Dataloggers Templ |
|
|---|---|
| Max Temperature | 105 C |
| Min Temperature | -30 C (-22 F) |
| Input Source | External Probe |
| Accuracy | ±0.4 °C |
| LCD Screen | No |
| Software Included | Yes |
Environmental Testers / Physical Property/Barometers and Altimeters Template |
|
| Measurement Types (Barometers/Altimeters) | Barometric Pressure, Humidity, Temperature |
| Wireless Capability | No |
Test Equipment General Attributes |
|
| Warranty | 3 YEARS |
| Interfaces I/O | RS-485 |
| IP Rating | IP40, IP54 |
| Product Weight | 0.5 LBS |
| Shipping Weight | 0.60 LBS |
| Country of Origin | Czech Republic |
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