SDI-12 Humidity, Temperature, Barometric Pressure, and CO2 (% in air) Probe
This Relative Humidity, Temperature, Barometric Pressure, and CO2 (% in air) Probe offers precise measurements for environmental monitoring, supplying reliable data suitable for industrial, environmental, HVAC, and agricultural applications.
Documents
Internal Reference:
SN-ERHTPCO2-20
Humidity, Temperature, Barometric Pressure, and CO2 (% in air) Probe Highlights
- Stainless steel enclosure and filter cap engineered to shield sensing elements in harsh environments
- Waterproof protection, and internal electronics sealed in resin, coated electrical parts
- Low-power consumption suitable for battery-powered applications
- On-board heater to remove condensation from the humidity sensor
- Extensive command sets for operational options and probe diagnostics
- User-defined multipoint calibration for each of the primary parameters
- UV-protected and oil-resistant flexible cable (optional)
Humidity, Temperature, Barometric Pressure, and CO2 Probe Description
HTP is a multi-parameter, high-accuracy digital probe. Due to its low power consumption, versatile electrical interfacing options, and wide-range power supply, the probe is compatible with a variety of battery operated dataloggers and industrial data acquisition systems. A stainless-steel enclosure in combination with weatherproof electronic circuitries, and durable cable, ensure proper long-term operation even in harsh outdoor and demanding industrial conditions. All primary parameters are sensed by physical sensors. The secondary parameters are calculated, based on values measured by the probe's physical sensors. For optimal results in outdoor applications, it is recommended to install a probe in a solar shield.
Measured Values - Primary Parameters
- Relative humidity
- Air temperature
- Barometric pressure
- CO2 (% in air)
Calculated Values - Secondary Parameters
- Dew point
- Absolute humidity
- Wet-bulb temperature
- Vapor pressure
- Saturated vapor pressure
- Atmospheric pressure at sea level
- Boiling point of water
- Heat index
- Mixing ratio
- Specific enthalpy
- Speed of sound in air
Automatic Statistical Logging
Our probes provide continuous environmental statistics collection during uninterrupted power periods. EVVOS HTP continuously updates a set of basic statistical values for every primary and secondary parameter while the unit remains powered. Each statistical record includes minimum, maximum, first, and last measured values, plus the total count of measurements processed. Records update automatically with each new measurement (max sample count: 999,999). Data accumulation resets after power-up. Readouts and manual control of per-parameter statistics are available via protocol commands. For more information, please refer to the User's Manual.