VT450 / Pressure, humidity and temperature sensor

1 Function and purpose
2 Technical specifications
3 Physical description
4 Packaging includes
5 Drawings
6 Example connection
7 Connecting CAN devices
8 CAN configuration
9 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

VT450 is a high-quality pressure, humidity, and temperature digital CAN sensor with a reliable price.

Separate elements inside the web interface represent every environmental parameter of VT450. This allows us to set individual thresholds and set up event triggering such as notifications and other actions.

The dew point is easily calculated using the temperature and humidity parameters of VT450 inside the Vutlan web interface.

CAN devices and sensors can be chained together. Up to 10-32 CAN devices can be connected in a chain. You can connect CAN sensors or extensions on a CAN bus line.

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.