Descripción
Comet H3331 Temperature and Humidity Regulator with RS485 Output
- Two relay outputs
- Three two-state outputs
- Keypad for settings
- Acoustic and visual indication of alarms
- Specific humidity
- Mixing ratio
- Large Dual Line LCD
Humidistat is designed for two-state control of e.g. heating, ventilation, humidifier, dehumidifier, etc. Transmitter is equipped with two relay outputs for alarm indication or control of external devices. Each relay can be assigned to any measured or computed value. For each relay setting of delay, hysteresis, audible alarm is enabled.
Measured temperature and relative humidity is recalculated to other humidity interpretations – dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy. Parameters are easy adjustable from regulator keyboard or from the computer. Large dual line LCD for simultaneous display of temperature, relative humidity or other calculated humidity interpretation is an advantage.
State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitter is designed for use in non-aggressive environment.
Applications – Measuring and Control of Air Humidity
- Temperature control
- Monitoring of temperature and three binary signals
- Building management and automation
- Server rooms
- Telecommunication devices
- Warehouses, glasshouses
- Manufacturers
- Museums, archives, galleries
- Air-conditioned rooms, HVAC
- 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.
- 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.
- SensorReader software
- Basic data acquisition utility for Comet Transmitters and Regulators. Software is free for download.
Serial output RS485 is galvanically isolated from other circuitry to prevent collisions on the RS485 bus. 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 0 to 255. Communication speed is 110 to 115200Bd.
Manufacturer Specs
| Comet H3331 Specifications | |
| Technical Parameters | Value |
| Output | RS232 |
| Measured Value | Temperature + Relative Humidity |
| Construction Type | With T+RH Probe on Cable |
| Design | Industrial |
| Temperature Measuring Range | -30 to 105 °C |
| Relay Output | Yes |
| Two-State Input | Yes |
| Lcd Display | Yes |
| PoE | No |
| Maximum switching voltage, current, power of relay output | 50V, 2A, 60VA |
| Audible alarm | from built-in beeper – switchable |
| 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 |
| Signal for binary inputs | from voltage-less contact, open collector or two-state voltage signal. Inputs are not galvanically isolated. |
| Minimum pulse length at binary input | 500 ms |
| Voltage at open contact | 3.3 V |
| Low voltage level | 0 to +0.5 V |
| High voltage level | +3.0 to +30V |
| 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 |
| Filtering ability of sensor cover | 0.025mm – filter with stainless steel mesh |
| Communication protocol | ModBus RTU and Advantech ADAM compatible protocol |
| Communication speed | 110 to 115200 Bd |
| IP protection | IP65 electronics, IP40 sensors |
| Power | 9-30Vdc, power consumption approximately 1W |
| Length of the probe cable | 1m, 2m or 4m optionally |
| Dimensions | 136 x 159 x 45 mm (W x H x D), probe length 88 mm, probe diameter 18mm |
| Weight | approximately 500g – 1m probe |
| Warranty | 3 years |
Tech Specs
Test Equipment General Attributes |
|
|---|---|
| Product Weight | 1.10 LBS |
| Shipping Weight | 1.3 LBS |
| Country of Origin | Czech Republic |
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