Pressure transmitter (pressure transmitter) refers to the output of the standard signal pressure sensor, is a kind of acceptance of the pressure variable proportionally converted to the standard output signal instrumentation.It can feel the pressure measuring element sensor gas, liquid and other physical pressure parameters into a standard electrical signal (such as 4 ~ 20mADC, etc.), in order to supply the indication of the alarm instrument, recorder, regulator and other secondary instruments for measurement, indication and process regulation.
Basic Introduction
Remote differential pressure/pressure transmitter is a pressure sensor assembly used to prevent the medium in the pipeline from entering directly into the transmitter, which is connected to the transmitter by a capillary tube filled with fluid.It is used to measure the level, flow and pressure of liquids, gases or vapors, which are then converted into 4～20mA DC signal output.
After BL1151/3351DP/GP Differential Pressure/Pressure Transmitter takes on the remote sealing device, it becomes BL1151/3351DP/GP Remote Differential Pressure/Pressure Transmitter, which still has various features of BL1151/3351DP/GP Differential Pressure/Pressure Transmitter.It can communicate with HART hand manipulator to set and monitor through it.
Direct contact of the measured medium with the isolation diaphragm of the transmitter can be avoided, and this measurement method is suitable for the following situations:
1, the measured medium on the transmitter sensitive components have a corrosive effect
2, the need for high-temperature measured medium and transmitter isolation
3, the measured medium has solid suspensions or high-viscosity media
4, the measured medium by the pressure tube lead while easy to solidify or crystallize
5, the replacement of the measured medium need to be strictly purified measuring head
6, the measuring head must be kept hygienic, pollution is strictly prohibited.Use objects: corrosive or viscous liquids Remote differential pressure/pressure transmitter
Note: Vacuum occasions should not be used remote transmitter.
Major Category
BL1151/3351DP/GP telemetry differential pressure/pressure transmitter telemetry device in the form of four:
1, 1191PFW flat telemetry device (standard 3 ″, working pressure of 2.5MPa)
2, 1191RTW-type threaded mounting telemetry device (maximum working pressure of 10MPa)
3, 1191RFW-type flange-mounted telemetry device
4, 1191EFW-typeInsert cartridge type remote transmission device (standard 3″ or 4″, working pressure 2.5MPa)
Characterization
Analog type features:
● High accuracy
● Continuously adjustable range and zero point
● Good stability
● Positive migration of up to 500%, negative migration of up to 600%
● 2-wire system
● Adjustable damping, overpressure resistance
● Solid-state sensor design
● No mechanically movable parts, low maintenance
● Lightweight (2.4kg)
● Unified structure of the entire series, high interchangeability
● Small size (166mm total height)
● Diaphragm material in contact with the medium is selectable.Overpressure resistance on one side
● Low-pressure cast aluminum alloy housing
Intelligent features:
●Superb measurement performance for pressure, differential pressure, level, and flow measurement
●Digital accuracy: +(-)0.05%
●Analog accuracy: +(-)0.75% +(-)0.1% F.S
●Full performance: +(-)0.25 F.S
●Stability: 0.25% for 60 months
●Range ratio: 100:1
●Measurement rate: 0.2S
●Compact (2.4kg) all stainless steel flange for easy installation
●Process connection compatible with other products for optimum measurement
●World's only H-alloy sheath (patented technology) for excellent cold and thermal stabilitykg) all stainless steel flange for easy installation
●Process connection compatible with other products for optimal measurement
●World's only sensor with H alloy sheath (patented technology) for excellent cold and thermal stability
●Intelligent transmitter with 16-bit computer
●Standard 4-20mA with HART protocol-based digital signal for remote control
●Support for upgrading to fieldbus and field control-basedtechnology.
