The Rosemount 644 offers a flexible and reliable solution to any temperature measurement need. As a highly accurate transmitter that comes in either HART, FOUNDATION Fieldbus or PROFIBUS PA communication protocols, as well as head mount, field mount, or rail mount form factors, the Rosemount 644 is designed to meet your most demanding applications.  Available LCD display and Local Operator Interface provide local measurement indication and Transmitter-Sensor Matching functionality provides  unmatched accuracy for a  transmitter and RTD sensor measurement point. See Features & Benefits below for the complete model offering overview.

Specifications:
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

Other brands we can offer are listed as below:
Honeywell pressure transmitter,
Rosemount pressure transmitter,
ABB pressure transmitter,
GE pressure transmitter,
SIEMENS pressure transmitter,
Dwyer pressure transmitter,
Fuji pressure transmitter,
Foxboro pressure transmitter,
Danfoss pressure transmitter,
Endress+Hauser(E+H) pressure transmitter,
Keller pressure transmitter,
Murphy pressure transmitter,
Noshok pressure transmitter,
Wika pressure transmitter,
Yokogawa pressure transmitter,
JUMO pressure transmitter,
Anderson pressure transmitter,
Azbil pressure transmitter,
Vega pressure transmitter,
Ashcroft pressure transmitter,
Smar pressure transmitter, Fischer pressure
transmitter, Dynisco pressure transmitter,
HYDAC pressure transmitter,
STS Sensor pressure transmitter,
Bourdon Haenni pressure transmitter,
Huba pressure transmitter,
Trafag pressure transmitter.etc.

Should you have any questions,please feel free to ask us.