------Product description--------------------------------------------------------------------------------------------------------------------------

         Rosemount temperature transmitters allow you to accurately understand the needs of the production process. Rosemount 644 temperature transmitters are versatile, highly accurate and available using HART™, FOUNDATION™ fieldbus or PROFIBUS™ protocols. They are available in top, field or rail mount styles and a wide range of housing options. By adding a Local Operator Interface (LOI), the transmitter configuration can be updated in the field without tools. The transmitter also includes diagnostic functions such as Hot Backup™, sensor drift warning and thermocouple performance degradation to meet the needs of different applications and meet your needs in every aspect.

Features and benefits

 ■ DIN head mount, field mount, and rail mount form factors 

 ■ 4–20 mA/HART® with Selectable Revision 5 and 7, FOUNDATION™ Fieldbus or PROFIBUS® PA Protocol support 

 ■ SIL3 Capable: IEC 61508 certified by an accredited third-party agency for use in safety instrumented systems up to SIL 3 [minimum requirement of single use (1oo1) for SIL 2 and redundant use (1oo2) for SIL 3] 

 ■ Enhanced display with Local Operator Interface (LOI) 

 ■ LCD display 

 ■ Integral transient protection 

 ■ Enhanced accuracy and stability 

 ■ Transmitter-sensor matching with Callendar-Van Dusen constants

 ■ Variety of enclosures

------ Specifications--------------------------------------------------------------------------------------------------------------------------------

 Accuracy (default configuration) PT 100 

 HART standard: ±0.15 °C 

 HART enhanced: ±0.1 °C 

 FOUNDATION Fieldbus: ±0.15 °C 

 PROFIBUS PA: ±0.15 °C

 Output signal :4-20 mA /HART™ protocol, FOUNDATION™ fieldbus protocol, PROFIBUS™ PA protocol

 Local display options: LCD display LCD display with LOI

Inputs:Supports universal sensor inputs (RTD, T/C, mV, ohms) and can support single or dual sensor assemblies

Selection demonstration

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Introduction of Xi 'an Lilu Trading Co., LTD

Xi 'an Lilu Trading Co., Ltd. isa professional import and export focus on transmitter, flow meter, positioner instrument industry provider. We have a huge advantage in the following brand ROSEMOUNT, YOKOGAWA, HONEYWELL, SMC, IMI NORGREN, ABB, ENDRESS + HAUSER, FISHER, YTC, AZBIL, SIEMENS, and some European brands.

We look forward to your inquiry and hope that we can start the best cooperation.