Wittelb WIN-SN-TnH-AHT20-AO-C Digital Temperature & Humidity Sensor - Analog Output (4-20mA)

Name: Wittelb WIN-SN-TnH-AHT20-AO-C Digital Temperature &amp; Humidity Sensor - Analog Output (4-20mA)
Brand: Wittelb
SKU: SENS-3397
Price: 5637.00 INR
Availability: OutOfStock

₹5,637.00 (Inclusive of all taxes)

Out of Stock

The Wittelb WIN-SN-TnH-AHT20-AO-C is a digital temperature and humidity sensor module with a configurable 4-20mA analog output, designed for seamless integration into industrial PLCs, HVAC systems, and environmental monitoring setups operating on a 12-24V DC supply.

Features

High-precision AHT20 sensor for simultaneous temperature and humidity measurement.
Configurable 10-bit or 12-bit resolution 4-20mA analog current loop output.
Wide operating temperature range from -40°C to +85°C.
Low power consumption suitable for continuous monitoring applications.
Compact 85mm x 85mm board format for easy panel or DIN rail mounting.

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Description

This sensor module integrates a high-accuracy AHT20 digital sensor, providing stable and reliable measurements of ambient temperature and relative humidity. The onboard signal conditioning circuitry converts the digital sensor data into a standardized 4-20mA analog current signal, ensuring robust noise immunity and compatibility with industrial control systems over long cable runs.

Designed for durability, the module operates across a wide -40°C to +85°C range, making it suitable for harsh environments from outdoor weather stations to industrial process monitoring. Its 12-24V DC wide-range input simplifies power supply design and integration into existing 24V industrial control panels.

Key Features

High-Accuracy Sensing: Utilizes the AHT20 MEMS sensor for precise temperature (±0.3°C) and humidity (±2% RH) readings.
Industrial-Standard Output: Provides an isolated 4-20mA current loop output, configurable for 10-bit or 12-bit resolution.
Robust Power Design: Accepts a wide 12-24V DC input, compatible with standard industrial power supplies.
Extended Environmental Range: Operates reliably from -40°C to +85°C, suitable for demanding applications.
Compact & Mountable: The 85mm x 85mm PCB features mounting holes for secure installation.
Optimized Performance-to-Cost Ratio: Delivers industrial-grade signal conditioning and sensor accuracy in a value-engineered module.

Applications

Industrial HVAC and Building Automation System (BAS) monitoring and control.
Environmental monitoring in greenhouses, warehouses, and agricultural facilities.
Process control and condition monitoring in manufacturing and cleanrooms.
Integration into PLC or SCADA systems via 4-20mA input modules.
Outdoor weather station and air quality monitoring network nodes.

Technical Specifications

Item Type	Temperature and Humidity Sensor Module
Model Number	WIN-SN-TnH-AHT20-AO-C
Core Sensor	AHT20
Supply Voltage	12-24 VDC
Operating Current	~1 A (max)
Output Signal	4-20mA Analog Current Loop (10-bit/12-bit configurable)
Temperature Measurement Range	-40°C to +85°C
Humidity Measurement Range	0% to 100% RH (typical)
Board Dimensions (L x W)	85 mm x 85 mm
Weight (approx.)	0.257 kg

Frequently Asked Questions

What is the output signal of this sensor module?

The module provides a configurable 4-20mA analog current loop output. You can select between 10-bit or 12-bit resolution for the current signal, which corresponds linearly to the measured temperature and humidity values. This standard industrial signal is ideal for long-distance transmission with high noise immunity.

What is the required power supply voltage?

The module operates on a wide-range DC input of 12 to 24 volts. This makes it directly compatible with common 24V industrial power supplies and 12V battery systems. Ensure your power source can provide up to approximately 1 Amp to reliably power the module and drive the current loop.

How do I wire and interface this 4-20mA sensor?

Connect the DC power supply (12-24V) to the designated V+ and GND terminals. The 4-20mA output is typically a two-wire loop: one wire carries the supply power into the module, and the same wire carries the current signal out to your PLC's analog input or a precision resistor to convert the current to a voltage for measurement.

What is the measurement range and accuracy?

The module uses an AHT20 sensor capable of measuring temperature from -40°C to +85°C and relative humidity from 0% to 100% RH. Typical accuracy is ±0.3°C for temperature and ±2% for relative humidity. The wide operating range makes it suitable for both indoor and harsh outdoor environments.