Descripción
Comet T3311 Temperature+humidity, Outdoor, Indoor Probe, RS232 Interface
- Built-in relative humidity
- Temperature sensors
- Measured values are also converted to other humidity interpretation
- Dew point temperature
- Absolute humidity
Programmable temperature and humidity transmitter is equipped with temperature and relative humidity sensors. Measured values are also converted to other humidity interpretation – dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy. 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 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.
Serial output RS232 – 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 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.
- Sensor Reader software
- Basic data acquisition utility for Comet Transmitters and Regulators. Software is free for download.
Manufacturer Specs
| Comet T3311 Specifications | |
| Technical Parameters | Value |
| Output | RS232 |
| Measured Value | Temperature + Relative Humidity |
| Construction Type | Ambient Air |
| Design | Industrial |
| Temperature Measuring Range | -30 to 80 °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 |
| 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 |
| Temperature operating range | -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 |
| Temperature compensation of the humidity sensor | 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 | IP65 electronics, IP40 sensors |
| Power | 9-30Vdc, current consumption approximately 6mA |
| Dimensions | 88.5 x 170 x 39.5 mm (W x H x D), stem length 75 mm |
| Weight | approximately 230g |
| Warranty | 3 years |
Tech Specs
Test Equipment General Attributes |
|
|---|---|
| Product Weight | 0.5 LBS |
| Shipping Weight | 0.6 LBS |
| HTS/Schedule B Number | 9025.90.0600 |
| ECCN Number | EAR99 |
| Country of Origin | Czech Republic |
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