SKU: SENS-0499
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SN-3002-EVA-N01 Evaporation Transmitter (RS485) - 304 Stainless Steel

₹15,449.00 (Inclusive of all taxes)
Out of Stock

The SN-3002-EVA-N01 is a high-precision RS485 evaporation transmitter designed for integration into meteorological and hydrological monitoring systems. It utilizes a pressure-based weighing principle to accurately measure water surface evaporation from a standard pan, delivering stable data for long-term environmental observation.

Features

  • Pressure-based weighing principle for accurate liquid level and evaporation measurement.
  • Constructed with corrosion-resistant 304 stainless steel housing for field durability.
  • RS485 Modbus communication interface for seamless system integration.
  • Immune to measurement errors caused by surface ice formation or power interruptions.
  • High-precision digital sensor core with anti-electromagnetic interference design.

Out of stock

Description

The SN-3002-EVA-N01 Evaporation Transmitter is engineered for precise, long-term monitoring of water surface evaporation, a critical parameter in hydrological and meteorological studies. It employs a pressure-based weighing system to detect minute changes in the liquid level of a standard evaporation pan, translating this into accurate evaporation data. This method provides inherent immunity to errors caused by surface ice, a common issue with ultrasonic or float-based sensors.

Housed in a double-layer 304 stainless steel shell, the device is built to withstand harsh outdoor environments while minimizing thermal interference from direct sunlight. The integrated high-precision digital sensor ensures stable, reliable performance and outputs data via a standard RS485 Modbus interface, making it compatible with a wide range of data acquisition systems, industrial PLCs, and environmental monitoring networks.

Key Features

  • Robust 304 Stainless Steel Construction: Provides superior corrosion resistance and structural integrity for long-term field deployment.
  • Pressure-Based Weighing Principle: Delivers accurate evaporation measurement by detecting weight changes in the evaporation pan, unaffected by surface ice or foam.
  • RS485 Modbus Communication: Enables reliable, long-distance data transmission and easy integration into existing monitoring networks.
  • Data Retention & Freeze Immunity: Maintains measurement consistency and accurate output even after power cycles or during freezing conditions.
  • Double-Layer Shell Design: Reduces thermal interference from direct sunlight, enhancing measurement stability.
  • Low Power Consumption: Operates on a wide 12-24V DC supply with a working current ≤30mA, suitable for solar-powered stations.
  • Fast Response Time: Provides updated measurement data with a response time of less than 1 second.

Applications

  • Meteorological station evaporation pan monitoring for climate and water balance studies.
  • Hydrological network integration for watershed management and reservoir evaporation loss calculation.
  • Agricultural research and irrigation scheduling based on actual evapotranspiration data.
  • Environmental monitoring stations tracking long-term atmospheric and ecological changes.
  • Water resource management in arid and semi-arid regions.

Technical Specifications

Model NumberSN-3002-EVA-N01
Product TypeEvaporation Transmitter
Operating Voltage12-24V DC
Working Current≤ 30 mA
Communication InterfaceRS485 (Modbus)
Response Time< 1 second
Housing Material304 Stainless Steel
Measurement PrinciplePressure-Based Weighing
Length390 mm
Width33 mm
Weight4200 g (4.2 kg)

Frequently Asked Questions

What is the operating voltage range for the SN-3002-EVA-N01 transmitter?

The transmitter operates on a wide-range DC power supply of 12 to 24 volts, with a typical working current of ≤30mA. This range makes it compatible with standard industrial power supplies and suitable for integration into solar-powered remote monitoring stations.

How does the RS485 communication interface work and what protocol is used?

The device features a standard RS485 serial communication interface, which supports long-distance data transmission in noisy industrial environments. It typically uses the Modbus RTU protocol, allowing for easy integration with PLCs, SCADA systems, and data loggers that support this industry-standard protocol.

Why is this sensor immune to freezing errors compared to other types?

Unlike ultrasonic sensors that measure distance to the water surface, this transmitter uses a pressure-based weighing principle. It measures the total weight of the evaporation pan and water. Since ice formation does not change the total mass, the calculated evaporation rate remains accurate even when the water surface is frozen.

What is included in the fitting accessory set?

The fitting accessory set typically includes the necessary mounting hardware and brackets to securely install the transmitter onto a standard evaporation pan. The specific contents may vary, but it is designed to provide all mechanical components required for a standard field deployment.

Package Includes

  • 1 x SN-3002-EVA-N01 Evaporation Transmitter
  • 1 x Industrial Cable
  • 1 x Fitting Accessory Set

Additional Information

Weight 4.2 kg
Dimensions 39 × 3.3 cm