VT450 Pressure, humidity and temperature sensor

1 Function and purpose
2 Use cases
3 Technical specifications
4 Physical description
5 Packaging includes
6 Drawings
7 Example connection
8 Connecting CAN devices
9 CAN configuration
10 API: managing system elements by 3rd party Software

Documentation page: https://vutlan.atlassian.net/wiki/spaces/DEN/pages/2175664130/VT450+Pressure+humidity+and+temperature+sensor

Product page: https://vutlan.com/can-sensors/152-vt450-pressure-humidity-and-temperature-sensor.html

Function and purpose

The VT450 CAN Sensor is a versatile digital sensor that measures pressure, humidity, and temperature with high accuracy, making it a cost-effective solution for monitoring environmental parameters in various settings.

Each measured parameter (pressure, humidity, temperature) is represented separately in the Vutlan web interface. This setup allows you to configure individual thresholds and create event-triggering actions, such as notifications and alarms, for precise environmental control.

Additionally, the VT450 sensor's ability to calculate the dew point (based on temperature and humidity) enhances its capability for monitoring areas prone to condensation. The sensor supports the CAN bus interface, allowing up to 10-32 CAN devices to be connected in a chain, simplifying the installation and expansion of monitoring solutions across multiple areas or systems.

This sensor is ideal for data centers, industrial applications, and other facilities where monitoring multiple environmental parameters is critical for maintaining optimal conditions.

Use cases

Here are some key use cases for the VT450 CAN sensor:

Data Centers: Ensures precise environmental control by monitoring temperature, humidity, and pressure, which helps prevent overheating, condensation, or overpressure that could affect server performance.
Clean Rooms: Maintains optimal conditions for sensitive manufacturing processes, such as pharmaceutical production or semiconductor fabrication, where temperature, humidity, and pressure need to be carefully controlled.
Industrial Automation: Monitors environmental parameters in factories or processing plants, ensuring that machines and equipment operate within safe and efficient conditions.
HVAC Systems: Helps regulate building management systems by providing data for adjusting heating, ventilation, and air conditioning based on real-time environmental conditions.
Agriculture and Greenhouses: Monitors the environmental conditions in agricultural settings or greenhouses, ensuring optimal growth conditions for plants by tracking humidity, temperature, and pressure.
Warehouses: Used for monitoring and maintaining ideal environmental conditions for temperature-sensitive goods such as food, pharmaceuticals, or other perishable items.
Museums or Archives: Helps in maintaining controlled environments that protect sensitive artifacts, documents, or artworks from degradation caused by inappropriate temperature or humidity levels.

The flexibility of the VT450 sensor makes it adaptable for various sectors where maintaining specific environmental conditions is critical.

Technical specifications

Function & purpose	Description

Function & purpose	Description
Detects:	Pressure, humidity and temperature

Communications	Description
Sensor type:	CAN digital sensor
Network Interface	CAN open
Inputs/Outputs:	x2 RJ11 6P4C ports
Daisy chain:	Yes, a daisy chain is possible for all CAN sensors.

Accuracy	Description
Pressure RMS noise:	0.2Pa (equivalent to 1.7cm)
Pressure error:	±0.25% (equivalent to 1m at 400m height change)
Pressure from °C:	±1.5Pa/K (equivalent to ±12.6cm at 1 °C temperature change)
RH accuracy:	± 3% RH (max)
Hysteresis:	≤2% RH
Response time:	1 s
Temperature:	1.5°C

Environmental	Description
Pressure range:	300 to 1100 hPa
Working temperature range:	−40 to +85 °С
Humidity operating range:	0 to 95% RH

Power Requirement	Description
Power input:	12V DC, 1A (power supplied on a CAN bus chain)
Max. distance from the monitoring unit:	225m
Current consumption:	1 Watt

Mechanics	Description
Dimensions:	68x47x26 mm
Packaging weight:	160 g
Mounting options:	Desktop, Wall mount
LED indicators:	Red / Green (RUN/ERROR)
TR switch:	Turn on for the last device in a CAN bus line

General	Description
Manufactured in:	Slovak Republic, European Union
Manufactured by:	Vutlan s.r.o.
HS code:	9025 11 800
GTIN	8588009886518
Warranty:	90 days

Physical description

1. LEDs: "RUN" (green) - indicates that the appliance is correctly connected to the main module, "ERROR or ERR" (red) - indicates an error, the appliance lost connection to the main module.

2. "Pressure, humidity & temperature sensor" - The sensor is located outside of the enclosure for better measurement and precision.

3. "TR" - This switch should be turned to "ON" (down) position if the sensor is the last one in the CAN chain. Otherwise, the switch should be turned to "OFF" (up) position.

Example 1: We have 1 CAN sensor connected to the main module VT8101 on the CAN bus. In this case, this sensor is the only one and the last one in the CAN chain, and its 2nd "TR" switch should be in the "ON" (down) position.

Example 2: We have 5 sensors or modules connected to the main module via the CAN bus. The sensor is not the last sensor in a chain, for example, it is located in the middle of the chain. In this case, the "TR" switch must be in the "OFF" (up) position.

Example 2: We have 5 sensors or modules connected to the main module via the CAN bus. The sensor is the last sensor in a chain. The "TR" switch must be in the "ON" (down) position.

4. "CAN" - two equivalent digital connectors RJ11 6P4C for the connection to the master module, CAN sensors, or CAN extensions on a CAN bus, with auto-sensing.