King Shell SN-3002-TVOC-N01 TVOC Transmitter (RS485) - 0-60000ppb, 4-20mA/0-5V/0-10V Output, Wall-Mount

Name: King Shell SN-3002-TVOC-N01 TVOC Transmitter (RS485) - 0-60000ppb, 4-20mA/0-5V/0-10V Output, Wall-Mount
Brand: King Shell
SKU: SENS-0491
Price: 2329.00 INR
Availability: OutOfStock

₹2,329.00 (Inclusive of all taxes)

Out of Stock

The King Shell SN-3002-TVOC-N01 is an industrial-grade RS485 TVOC transmitter designed for precise monitoring of Total Volatile Organic Compounds in indoor air. It provides versatile analog outputs (4-20mA, 0-5V, 0-10V) for seamless integration with PLCs, DCS, and cloud-based monitoring platforms.

Features

High-sensitivity TVOC detection with 0-60000 ppb measurement range
Multi-interface output: 4-20mA, 0-5V, 0-10V analog & RS485 Modbus
Wide operating voltage range of 10-30V DC for industrial compatibility
Robust wall-mount King Shell enclosure with IP65-rated waterproof protection
Fast 2-second signal refresh time for real-time air quality monitoring

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Description

The SN-3002-TVOC-N01 utilizes a high-sensitivity metal oxide semiconductor (MOS) sensor for detecting a broad spectrum of volatile organic compounds. Its integrated signal conditioning circuit ensures stable, linearized output across the full measurement span, making it suitable for demanding environmental monitoring applications.

Housed in a durable, wall-mountable King Shell enclosure, the transmitter is designed for reliable operation in harsh environments from -40°C to +80°C. The RS485 Modbus communication protocol enables network connectivity for multi-point monitoring systems and integration with free cloud platforms for remote data access and analysis.

Key Features

Industrial-grade TVOC sensor with long-term stability and low drift
Flexible power and signal wiring supports both three-wire and four-wire connection systems
Linearized analog outputs are pre-calibrated for direct connection to PLC analog input modules
Dust and waterproof (IP65) housing protects internal electronics in challenging installations
Wide supply voltage tolerance ensures compatibility with standard 12V/24V DC industrial power supplies
Integrated temperature compensation maintains accuracy across the specified operating temperature range
Modbus RTU protocol over RS485 allows for daisy-chaining multiple sensors on a single bus

Applications

Indoor Air Quality (IAQ) monitoring in offices, schools, and commercial buildings
HVAC system control and demand-controlled ventilation (DCV)
Industrial safety and environmental monitoring in manufacturing facilities
Smart building integration for health and wellness certification (WELL, LEED)
Laboratory and cleanroom volatile compound level monitoring

Technical Specifications

Model Number	SN-3002-TVOC-N01
Detection Type	Total Volatile Organic Compounds (TVOC)
Measurement Range	0 - 60000 ppb
Output Signals	4–20mA, 0–5V, 0–10V, RS485 (Modbus RTU)
Supply Voltage	10 – 30 V DC
Response Time	≤ 2 seconds
Operating Temperature	-40°C to +80°C
Housing Protection	IP65 (Wall-mount King Shell)
Dimensions (L x W)	130 mm x 110 mm
Weight	126 g

Frequently Asked Questions

What is the wiring configuration for the 4-20mA output on this TVOC transmitter?

The transmitter supports both three-wire and four-wire connections. For a typical three-wire 4-20mA loop, connect the power supply positive (10-30V DC) to the V+ terminal, the ground to the GND terminal, and the current signal output to the Iout terminal. The device acts as a current source, requiring a 250-ohm load resistor at the receiving end (PLC/DCS) to convert the current to a voltage signal.

How do I communicate with the sensor using the RS485 Modbus interface?

Connect the RS485 A and B terminals to your host controller's RS485 bus, ensuring proper termination and bias resistors if required for long cable runs. The device uses the Modbus RTU protocol. You will need to configure your SCADA or data acquisition software with the sensor's unique slave address (configurable via internal DIP switches or software) and the relevant holding registers for reading TVOC concentration values and other parameters.

What is the expected lifespan of the TVOC sensor, and does it require calibration?

The metal oxide semiconductor (MOS) sensor has a typical operational lifespan of several years under normal environmental conditions. Periodic calibration is recommended for critical applications to maintain measurement accuracy. The sensor features baseline auto-correction, but a manual calibration against a known zero gas (clean air) and span gas can be performed via the Modbus interface or by adjusting onboard potentiometers for analog outputs.

Is this sensor suitable for outdoor installation?

While the housing is IP65 rated (dust-tight and protected against low-pressure water jets), it is primarily designed for wall-mounted indoor use. For outdoor installation, it must be placed under a protective eave or enclosure to prevent direct rainfall, prolonged UV exposure, and condensation, which could affect sensor longevity and performance outside its specified -40°C to +80°C operating range.