Rosemount Smart HART Temperature Transmitter

Rosemount Smart HART Temperature Transmitter644-H-A-I1-J5-P8-C2-C4-Q4 is an Emerson Rosemount 644 series integrated head mounted intelligent HART temperature transmitter designed for high-precision temperature measurement in industrial sites and supporting hazardous area applications.

1、 Complete model code analysis

Each suffix of this model corresponds to a specific configuration option, as detailed below:

table

codeconfiguration itemdetailed description

644main modelRosemount 644 series intelligent temperature transmitter

HInstallation TypeDIN A head mounted (integrated installation, directly integrated into the temperature sensor junction box), single sensor input

AOutput Protocol4-20mA analog output+HART digital communication protocol, supports HART 5/7 version, can be remotely configured and monitored

I1Explosion-proof certificationATEX Intrinsic Safety certification, suitable for Class I/II/III, Division 1 hazardous areas

J5Shell configurationAluminum universal junction box with 2 1/2-14 NPT conduit entries, standard aluminum protective housing, IP66 protection

P8performance enhancementEnhanced precision and long-term stability options, reducing measurement drift and improving full range accuracy compared to the standard model

C2Sensor matchingTransmitter sensor matching function, supporting the writing of sensor calibration parameters, optimizing sensor measurement accuracy, and supporting the calibration of the Kalund Van Dusen constant

C4Calibration configuration5-point high-precision calibration, covering a wider range of measurement to minimize measurement errors across the entire range

Q4Calibration CertificateProvide NIST traceable calibration certificates, corresponding to 5-point calibration reports, to meet industry compliance and audit requirements

2、 Core technical parameters

Input support: compatible with various temperature sensors such as platinum resistance detectors (RTDs), thermocouples, mV signals, Ohm signals, etc

Accuracy: ± 0.06 ℃ (with Pt100 sensor and P8 enhancement option)

Long term stability: ± 0.02%/year, far superior to the standard model

Power supply range: 12-42.4V DC

Temperature range: ambient temperature -40 ℃~+85 ℃ (-20 ℃~+70 ℃ with LCD display)

Protection level: IP66/IP67, dustproof and waterproof, suitable for harsh outdoor working conditions

Rosemount Smart HART Temperature Transmitter

3、 Main functions and features

Intelligent diagnosis: supports sensor fault detection, drift alarm, hot backup switching (dual sensor model), and early warning of faults

HART remote management: The range, unit, and alarm threshold can be remotely modified through a HART controller or system, without the need for on-site cover removal

Full range high precision: Accurate measurement over a wide range is achieved through 5-point calibration, sensor matching, and enhanced performance options

Hazardous area adaptation: ATEX intrinsic safety certification, can be directly used in flammable and explosive scenarios such as petroleum and chemical industries

Easy to maintain: Integrated design, simple wiring, built-in transient protection, lightning protection, anti-interference

4、 Typical applications

Petrochemical industry: temperature monitoring of reaction vessels and pipeline processes

Electricity: Boiler and turbine temperature measurement

Metallurgy: Heating furnace, heat treatment process temperature

Water treatment: pipeline network, disinfection process, temperature monitoring

High precision temperature detection scenarios in hazardous areas