Differential pressure transmitter or pressure sensor

IntroductionPT-DP004 pressure and differential pressure transmitter provide several credible measure method for avoiding the medium contact the membrane of the tranmitter, application as follow.1. Transmitter need to be isolated from high temperature medium2. Medium is able to corrupt the sense organ of the transmitter3. S

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Introduction
PT-DP004 pressure and differential pressure transmitter provide several credible measure method for avoiding the medium contact the membrane of the tranmitter, application as follow.
1. Transmitter need to be isolated from high temperature medium
2. Medium is able to corrupt the sense organ of the transmitter
3. Suspension or High Viscosity medium
4. Medium would curing or crystallization
5. If change the midium, the connection need to be cleaned strictly.
6. Connection must keep clean.


Technical Parameter
OutputAnalog output: two wire 4~20mADC Digital output: two wire 4~20mADC and variable digital signal in accordance with HART AGREEMENT.
Powersupply voltage 12.5~45VDC
Limit loadMax load resistor Rmax in loop decided by the supply voltage,see the below drawing. HART AGREEMENT require the load resistor not less than 250Ω,not more than 600Ω
Communication distanceMax. 1.5Km, multi-address communication can connect 15 smart transmitters Max.
Output display4 digital display,5 digit LCD display, pointer type.
MarkingExiaII CT5 ;explosion-proof isolation type
Zero offsetcan positive offset or negative offset,but can not overstep the utmost value
Temperatureenvironment temperature:-40~85ºC  (When choose LCD : -20~70ºC  ) Medium temperature: -40~104ºC  
Filled liquid operating temperatureSilicon oil: -29~+149ºC  
Inter oil: -18~+204ºC  
Pressure limitThread pattern: 3.45Kpa(Absolute)~13.78Mpa
Flange pattern: 3.45Kpa(Absolute) rated pressure of Flange
Plug-in pattern: 3.45Kpa(Absolute) rated pressure of Flange
Flat pattern: 3.45Kpa(Absolute) rating pressure of Flange
Relative humidity5~98%RH
Startup timeless than 5 sec
Capability changeless than 0.16cm3
Damp adjust0.20~25sec.
ProtectionTo avoid the datas are modified random,can utilize software or protect switch lock the memory data.
 
Reference conditionIn the condition : No offset, 1.53m capillary fill with silicon oil, 316SS membrane
Temperature influencelong-distance transmission fitting( typical) one side with(1.53m capillary long-distance transmission fitting)
Flat patternerror is less than 0.62Kpa/55ºC  ,capillary filled with silicon oil, the error increase 0.2 Kpa along with the length increased 1.53m
Hread and Flange patternerror is less than 1.99Kpa/55ºC  ,capillary filled with silicon oil, the error increase 0.62 Kpa along with the length increased 1.53m
Libration effectwithstand frequency 200Hz at any direction, arouse error ±0.05%URL
Power influence0.005%/V
Load influenceno load influence
Install position influenceabout 250Pa zero offset, can be eliminate via calibration,no range influence
RF interferencedrift is ±0.1%span in the condition of 30-1000MHz frequency and the most field intensity 10V/m
 

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