Application of 644 Rosemount Temperature Transmitter

The 644 Rosemount Temperature Transmitter is a commonly used type of temperature transmitter. It has the advantages of high measurement accuracy, good stability, and high reliability. It has become a leading temperature transmitter for control/safety and other industries. Today Xiaobian mainly introduces the 644 Rosemount temperature transmitter product knowledge, hoping to help users better use the product.

644 Rosemount Temperature Transmitter Overview

The 644 Rosemount Temperature Transmitter is an ideal product for critical applications (suitable for multiple environments). It provides high-precision measurements for a variety of devices, demonstrating the reliability of Rosemount products. The 644H and 644R Smart Temperature Transmitters are an extension of the Rosemount temperature instrument family that accepts 2, 3, and 4 wire thermal resistance, thermocouple, and resistance and millivolt inputs. Each transmitter is characterized by ambient temperature at the factory to reduce measurement errors over the entire operating temperature range.

644 Rosemount Temperature Transmitter Main Specifications

Analog accuracy: ±0.03% of range

Digital Accuracy: ±0.15°C (±0.27F), Pt100 Thermal Resistance

Ambient temperature effect: 0.003°C/1.0°C, Pt100

Stability: ±0.1% within one year

Input: Thermocouple, Mv, ohm

Output: 4-20 mA using HART communication protocol

Supply voltage: 12.0 to 42.4 volts

644 Rosemount temperature transmitter main features:

The use of silicone rubber or epoxy sealed structure, so shock, moisture, suitable for installation in harsh environments.

It is installed in the junction box of thermocouples and thermal resistors on site and outputs 4-20mA, 0-10mA output signals directly. This not only saves the cost of the expensive compensation wire, but also improves the anti-interference ability of the signal during long-distance transmission.

Thermocouple transmitter with automatic cold junction temperature compensation;

High precision, low power consumption, wide operating temperature range, stable and reliable operation;

Wide range of applications, which can be combined with thermocouples, thermal resistors to form an integrated field installation structure, and can also be used as functional modules installed in testing equipment and dashboards;

The intelligent temperature transmitter can communicate with the host computer through a HART modem or perform remote information management, configuration, variable monitoring, calibration, and maintenance functions on the model, index number, and range of the transmitter with the handheld and PC.

The intelligent temperature transmitter can adjust the display direction of the transmitter according to the actual needs of the user, and display the measured temperature of the medium, the change of the sensor value, the output current and the percentage of the sample;