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PT291 melt pressure transmitter
發(fā)布時間：2013-08-05
Feature and usage:
★ HARTTM digital communication system
★ 4-20mA loop power supply output
★ 0-250 to 0-30,000psi
★explosion-proof,ATEX/ intrinsic safety certification
★ conformity with PED and CE requirements benefits
★ linear improvement 80%
★ a handheld device configuration
★ provide output directly to DCS or PLC
★ pressure range defined by the customers
★ access to hazardous area certification
★ in line with new EC requirement
Products describe:
PT291 is a smart pressure sensor supplied of 4-20mA,button –sealed ,so it can work on dangerous condition.PT2911 has a welding structure, with a 1/2-20UNF thread, can be used in standard transducer mounting holes. Besides ,it also uses heat coupled or RTD to measure melt’s temperature. PT291 applies with 1 level,1 district,A,B,C&D group of hazardous area of explosion-proof certification. PT291 ATEX/ safe 1ooa Eex IA ‖ ‖ 1 g c, 0 and 1 certification. ATEX/ intrinsically safe mode can provide the sealing wire connections or a sealing 6 -pin Bendix connectors. PT291also have a WUYUE advanced computing module , which detects a linear change caused by material heated .all makes the probes can accurately measure pressure and temperature at one point . temperature has 4 kinds of equipments : J,K,E or PT100BO resistance.
Technical parameters
Output: 4-20mA, With an optional HARTTM digital communications
Input voltage: 16-36Vdc(Standard) 16-30Vdc(ATEX/ intrinsically safe applications)
Integrated error:+/-0.20%FSO ( including linearity , repeatability and hysteresis)
Repeatability:＋/－0.1％FSO
Adjustment range: 3:1 turndown ratio , down
Overpressure: 2X FSOOr 35,000psi, whichever is the smaller.
Zero point adjustment: -40% To +10%; range <500psi:-80% to +20%
Gain adjustment range:+/-2%FSO maximum
Load resistance: 500Ohm @26Vdc1000 ohm@36Vdc
Temperature & Mechanical characteristics
Diaphragm maximum temperature: 750℉（400℃）
Zero point drift under temperature changes:Typical 15psi/100f (27psi/100° c)
Electric operating temperature:-20℉—185℉（-29℃—85℃） 0F-150degrees c (-18° c-65° c) temperature compensation range of temperature:
Effect of zero or full Cheng Re: 0.01% Full scale /f maximum (0.02% full scale /° c max)
Installation torque: Maximum 500 inches/lbs.
Standard wet section: 15-5PHSST coating DyMaxTM