Cylindrical Temperature Transmitters with HART Protocol CN-502H Series

Product Overview

The CN-502H series temperature transmitters are designed to offer high-precision temperature measurement for various applications. These transmitters are equipped with HART protocol compatibility, enabling seamless communication and configuration. With support for multiple input types including RTD, thermocouple, millivolt, and resistance sensors, the CN-502H series is versatile and reliable, making it an ideal choice for diverse industrial temperature measurement needs.

Key Features

HART Protocol Compatibility

The CN-502H series supports the HART communication protocol, allowing for easy remote configuration and monitoring of the transmitters using external devices such as a HART communicator.

Multi-Input Support 

This series is compatible with various input types, including:

• RTD Sensors: Supports 8 types, offering a wide range of temperature measurement options.
• Thermocouples: Compatible with 7 different types, suitable for various high-temperature applications.
• Millivolt Inputs: Handles 4 types, ensuring precise measurement in low-voltage scenarios.
• Resistance Inputs: Supports 2 types of resistance measurements, expanding its versatility.

Compact and Durable Design

The CN-502H transmitters feature a compact design with dimensions of Ø44×24H mm, making them easy to install even in space-constrained environments. The robust construction ensures durability and reliable performance in industrial settings.

High Accuracy

The transmitters deliver high accuracy with a measurement precision of ±0.3% Full Scale (F.S.), ensuring reliable temperature data for critical applications.

Environmental Performance

Temperature Influence and Compensation

The CN-502H series is engineered to minimize environmental influences on measurement accuracy. It includes:

• Cold Junction Compensation (CJC): Provides an error margin of ±1 ℃.
• Input Error for Thermocouple and RTD: Limited to 0.015% F.S. per 1 ℃ (1.8 ℉).
• Output Error: Maintained within 0.1% F.S. per 10 ℃ (18 ℉).
• Power Supply and Load Fluctuations: Both controlled to within 0.002% F.S.

Operating Conditions

These transmitters are designed to function in a wide range of environmental conditions:

• Operating Temperature: -40 to 85 ℃, ensuring functionality in extreme environments.
• Storage Temperature: Also rated at -40 to 85 ℃.
• Humidity: Can operate and be stored in conditions with 5% to 95% relative humidity without freezing or condensation.

Input Specifications

The CN-502H series supports a variety of input ranges, catering to different types of temperature sensors:

• Thermocouples: Ranges from -270 ℃ to 1820 ℃, depending on the type.
• RTD Sensors: Covers temperatures from -200 ℃ to 850 ℃.
• Resistance: Supports resistance measurements from 0 to 2000 Ω.
• Analog Voltage: Ranges between -10 mV to 2000 mV.

These specifications ensure that the CN-502H series can be deployed in diverse applications, from low to high-temperature measurement scenarios.

Durability and Construction

Vibration and Noise Immunity

• Vibration Resistance: The transmitter can withstand a vibration amplitude of 0.75 mm at frequencies from 5 to 55 Hz, tested in all three axes (X, Y, Z).
• Noise Immunity: Meets IEC 61326-1 standards, ensuring reliable operation in electrically noisy environments.

Insulation and Dielectric Strength

• Insulation Resistance: Greater than 100 MΩ, tested with a 500VDC megger.
• Dielectric Strength: Rated at 1000 VAC for one minute between all terminals and the case, ensuring safety and robustness.

Protection and Material

• Housing: The transmitter's housing is rated at IP40 (IEC standard) for basic protection, with terminals rated at IP00.
• Material: The casing is constructed from durable Polycarbonate (PC), providing adequate protection in industrial settings.

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