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4-20 mA HART Rosemount 644 Temperature Measuring Instruments for temperature control

4-20 mA HART Rosemount 644 Temperature Measuring Instruments for temperature control

Good Quality 4-20 mA HART Rosemount 644 Temperature Measuring Instruments for temperature control Sales

Large Image :  4-20 mA HART Rosemount 644 Temperature Measuring Instruments for temperature control

Beijing Zhongzhiguochuang Automation Equipment Co.,ltd

Verified Supplier

China or USA

Business type: Manufacturer, Exporter, Trading Company

Telephone : 86-10-52900365

Room 805, Building 6, No. 5 Changchunqiao Road, Haidian District

Product Details:

Place of Origin: China or USA
Brand Name: Rosemount
Certification: SAA,CSA,FM, IECEx, INMETRO Intrinsic Safety TIIS Flameproof, China Intrinsic Safety, China Flameproof
Model Number: 644

Payment & Shipping Terms:

Minimum Order Quantity: 1pc
Price: USD510~USD610
Packaging Details: In carton or as customer’s requirement
Delivery Time: 6~8weeks
Payment Terms: L/C,T/T,Paypal
Supply Ability: 1000 pcs
Detailed Product Description

Rosemount 644 Temperature Transmitter designed for use in temperature control applications

 

 

Quick Detail:

  • User-selectable inputs
  • 4-20 mA HART or FOUNDATION fieldbus output
  • Optional five-digit integral LCD display
  • Input/output isolation tested to 500 V ac rms; 707 V dc @50/60 Hz
  • Head mount or rail mount

 

Description:

 

The Rosemount 644 temperature transmitter is designed for use in control applications where the loss of the temperature points may be detrimental. These highly accurate Rosemount 644 temperature transmitters are available in a variety of mounting styles, field housings, and communication protocols to meet your demanding installation requirements.

Each Rosemount 644 temperature transmitter is a 2-wire design providing either a 4-20 mA/HART or a completely digital FOUNDATION fieldbus ouput. Each unit can be configured for a variety of sensor inputs: RTD, themocouple, millivolt, or ohm. The advanced Rosemount 644 temperature transmitter powers PlantWeb ® by communicating important temperature diagnostics and PlantWeb alerts to ensure process health and enable economical single-sensor architecture.

Entering the temperature-resistance profile specific to the RTD sensor into the Rosemount 644 temperature transmitter results in transmitter-sensor matching. This eliminates the sensor interchangeability error, which can improve accuracy by up to 75%. The integral LCD display provides local indication of temperature measurement and diagnostics for immediate and accurate verification or process conditions.

Meeting the NAMUR NE 21 recommendations, the Rosemount 644 temperature transmitter ensures top transmitter performance in harsh EMC environments. In addition, the Rosemount 644 HART transmitter meets NAMUR NE 43 and NE 89 recommendations.

The Rosemount 644 temperature transmitter offers great mounting flexibility. The DIN A style head mount transmitters fits a variety of housings for remote transmitter mounting and can be integral or remote mounted to a sensor. The compact rail mount style is great for DIN rail mounting in the tight spaces of a crowded control room.

 

 

Applications:

 

* Temperature Field Transmitter with HARTprotocol convert various input signals into a scalable 4 to 20mA

 analogue output signal
* Input
Resistance thermometers(RTD)
Thermocouples(TC) 
Resistance transmitters(ohm)
Voltage transmitters(mV)

 

 

Specifications:

 

Accuracy

+ 0.15° C (+0.27° F) for Pt100 RTD (optional 0.10° C (+0.18° F))

D/A Accuracy

+0.03% of span

Ambient Temperature Effects

0.003°C per 1.0°C (1.8°F) change in ambient (Pt100 RTD)

Stability

.15% of Reading or .15°C for 2 years (optional 0.25% or 0.25°C 5 yr)

Inputs

2 x 2-, 3-, and 4-wire RTDs, thermocouple, millivolt, ohm

Supply Voltage

12 - 42.2V in HART Protocol (Selectable HART revisions 5 and 7)

Form Factor

DIN A Head Mount

Accuracy

+ 0.15° C (+0.27° F) for Pt100 RTD

D/A Accuracy

+0.03% of span

Ambient Temperature Effects

0.003°C per 1.0°C (1.8°F) change in ambient (Pt100 RTD)

Stability

0.15% of Reading or .15°C for 2 years

Inputs

1 x 2-, 3-, and 4-wire RTDs, thermocouple, millivolt, ohm

Supply Voltage

12 - 42.2V in HART Protocol

Form Factor

Rail mount

Accuracy

+ 0.15° C (+0.27° F) for Pt100 RTD

Ambient Temperature Effects

0.003°C per 1.0°C (1.8°F) change in ambient (Pt100 RTD)

Stability

.15% of Reading or .15°C for 2 years

Inputs

1 x 2-, 3-, and 4-wire RTDs, thermocouple, millivolt, ohm

Supply Voltage

9 - 32V in FOUNDATION Fieldbus Protocol

Form Factor

DIN A Head Mount

Accuracy

+ 0.15° C (+0.27° F) for Pt100 RTD

Ambient Temperature Effects

0.003°C per 1.0°C (1.8°F) change in ambient (Pt100 RTD)

Stability

.15% of Reading or .15°C for 2 years

Inputs

1 x 2-, 3-, and 4-wire RTDs, thermocouple, millivolt, ohm

Supply Voltage

9 - 32V in Profibus PA Protocol

Form Factor

DIN A Head Mount

 

 

Competitive Advantage:

 

The Rosemount 644 offers a flexible and reliable solution to any temperature measurement.

As a highly accurate transmitter that comes in either Hart and FOUNDATION Fieldbus communications protocols, and a head mount or rail mount configurations, the Rosemount 644 is designed to meet your most demanding applications. 

An available LCD display provides local measurement indication and the Transmitter-Sensor Matching functionality provides  unmatched accuracy for a  transmitter and RTD sensor measurement point.

 

Contact Details
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