Wireless temperature and humidity sensor DVTts-304-LoRa

The DVTts-304-LoRa wireless temperature and humidity sensor is designed to measure air humidity and temperature. DVTts-304-LoRa sensors transmit information via the LoRa protocol to wireless LoRa interface converter.

The area of application of air humidity_sensors is very wide and includes:

• Maintaining a microclimate within specified limits in a production equipped with moisture-sensitive electronic devices;
• Control over the indicators of humidity in office premises, in everyday life;
• In the field of housing and communal services - in boiler rooms and at water treatment plants, they prevent the formation of condensate;
• Periodic control helps to prevent the appearance of mold, mildew on the walls of the building or in the warehouse;
• Control of technological processes;
• Monitoring of environmental parameters, etc.

Modulation method LoRa (Long Range) provides a significantly greater communication range than other competitive methods.

Also resistance to external interference and noise, which allows this method to be used in various industries.

Humidity and temperature sensors DVTts-304-LoRa do not allow moisture condensation.

measuring element for humidity measurement sensors DVTts-304-LoRa

HIH4xxx measuring elements (manufactured by Honeywell International, Inc., USA) or SHTxxx (Sensirion, Switzerland).

Layered construction sensing element HIH4xxx provides excellent resistance to most application hazards such as wet, dust, dirt, oils and common environmental chemicals. The main characteristics of sensors based on elements of the HIH4xxx series:

• Molded body made of thermosetting plastic;
• Almost linear output voltage versus relative humidity;
• Interchangeable with laser fit;
• Low power design;
• Increased accuracy;
• Fast response time;
• Stable performance with low drift;
• Chemical resistance.

The transmitter operates stably within the recommended measuring range for humidity and temperature. Prolonged exposure to conditions outside the normal range, especially humidity> 80%, may temporarily increase measurement uncertainty. Once returned to normal range, it will slowly revert to factory settings.

Special care must be taken when using the transmitter in humid conditions (> 98%) and near the dew point as if wet, the sensing element can be irreparably damaged.

It is recommended to install DVTts-304-LoRa sensors with the protective cover of the sensitive element down, which minimizes sensor damage at high humidity and near the dew point. The sensor is mounted in such a way that air circulates freely around it. When choosing a place on the wall, it is necessary to avoid drafts, direct sunlight and other heat sources on it. Installation is made directly on the wall.

Metrological characteristics of digital sensors DVTts-304-LoRa

Scope of temperature and humidity_sensors DVTts-304-LoRa:

• Geographically distributed and local control systems;
• Remote data collection, supervisory control, production management;
• Solving automation tasks related to data transmission;
• Integration of multilevel information systems;
• Communication interface with measuring instruments, terminals.

The main characteristics of the DVTts-304-LoRa temperature and humidity sensor:

• frequency range of signal transmission 866-870 MHz;
• number of conversion channels - 1;
• maximum data transmission range up to 3000 m (line of sight with a 5dBi antenna), up to 400 m (with the presence of obstacles);
• degree of protection of the body - IP40;
• power supply - two batteries or accumulator 1.5V type AA;
• battery life - up to 3 years (depends on the sensor polling period);
• protection of transmitted data data;
• industrial and domestic use.

Advantages of LoRa converters:

• range and coverage;
• low power consumption;
• inexpensive equipment.

The DVTts-304-LoRa wireless temperature and humidity sensor is made in an ABS plastic case and is designed for wall
mounts.