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Monocrystalline silicon remote pressure transmitter membrane box is used to prevent the medium in the pipeline directly into the transmitter pressure sensor assembly, it is used between it and the transmitter with silicone oil and other filler liquids to transfer pressure. When the medium temperature is relatively high, you should use monocrystalline silicon remote pressure transmitter.
Remote pressure transmitter is used to measure the liquid, gas or steam level, density, pressure, and then transformed into 4-20mA + HART current signal output. Monocrystalline silicon remote pressure transmitter can also communicate with HART handheld terminal or RSM100 Modem each other, through them transmitter for parameter setting, process monitoring, etc. YR-ER102 Remote Pressure Transmitter's measuring range (when not migrated) is 0-6kPa-25MPa, and the rated pressures of the remote flange are 1.6/4MPa, 6.4MPa, 10MPa, 150psi, 300psi or 600psi.
Monocrystalline silicon remote pressure transmitter in the picture
The monocrystalline silicon remote pressure transmitter with the above appearance has a beautiful appearance, with good recognition, you see this appearance of the product, all from Changhui Instrument, high-performance monocrystalline silicon remote pressure transmitter.
Monocrystalline silicon remote pressure transmitter working principle and structure
The structure of remote pressure transmitter consists of CR-ER102 pressure transmitter and welded remote flange with capillary tube. The working principle of monocrystalline silicon remote pressure transmitter is the same as that of monocrystalline silicon pressure transmitter (see the technical specification of monocrystalline silicon pressure transmitter), but the pressure transfer path is a little bit different: the pressure acting on the side of remote flange firstly passes through the diaphragm and the filler liquid on the remote flange, then through the capillary tube, and then arrives at the measuring monocrystalline silicon pressure transmitter. capillary tube, and then to the measuring end of the monocrystalline silicon pressure sensor.
◆ Measuring parameters: pressure, level
◆Measuring range: lower limit value: -1 0 0 % URL (continuously adjustable); upper limit value: to +1 0 0 % URL (continuously adjustable)
Range: Table 1 monocrystalline silicon remote pressure transmitter range code and the range of the relationship between the comparison table
Table 2 Comparison of Remote Flange to Minimum Measurement Range
Output: 2-wire, 4-20mADC+HART output, digital communication; output signal limit: Imin=3.9mA, Imax=20.5mA
◆ Alarm current:
①Low alarm mode (minimum): 3.7mA
② high alarm mode (maximum): 21mA
③Non-reporting mode (hold): keep the effective current value before the fault.
④Alarm current standard setting: High alarm mode
◆ Response time: Damping constant of amplifier parts is 0.1s; Time constant of sensor and remote flange is 0.2-6s, depending on the range and range ratio of the sensor, the length of the capillary tube, and the viscosity of the filling liquid. Additional adjustable time constants are: 0.1-60s.
◆ Installation conditions:
① Remote pressure transmitter without capillary tube can be mounted directly through the remote flange, positional deviation will produce a correctable zero offset
② The electronic case can be rotated up to 360, and the positioning screws can fix it in any position.
③ Monocrystalline silicon remote flange is connected with the matching flange in accordance with ANSI/DIN standard, the matching flange should be equipped with soft gasket and mounting bolts and nuts (users can choose mounting bolts and nuts).
④For remote pressure transmitter with capillary tube, if the remote sealing device is lower than the transmitter body, the maximum height difference between the remote sealing device and the transmitter body should be less than 5 m. When the working pressure is lower than 100kPa, the transmitter body must be lower than the remote sealing device.
⑤ The minimum bending radius of capillary tube is 75mm, and winding is strictly prohibited!
◆ Ambient temperature: Minimum: depends on the filling liquid; Maximum: 85℃; with LCD, Viton seal is -20～+65℃.
◆ Storage/transportation temperature: minimum: depending on the filling liquid; maximum: 85℃.
◆ Relative humidity: 0 to 100 %
◆ Shock resistance: acceleration: 50kg; duration 11ms
◆ Vibration resistance: 2g to 500Hz.
◆ Process medium temperature limit: medium temperature: -20 ~ 400 ° C
Table 3 Relationship between filling liquid, working temperature and minimum working pressure
Note: If the working temperature and pressure are out of the above range, special design can be made to meet the requirements.
◆ Transmitter body pressure limit: vacuum to the maximum pressure.
◆ Rated pressure of remote flange: ANSI standard: 150psi-600psi; DIN standard: PN1.6MPa-PN10MPa.
◆ Preheating time: <15s
◆ Explosion-proof performance: NEPSI explosion-proof license: Exd Ⅱ CT6; NEPSI intrinsically safe license: Exia Ⅱ CT4; allow the use of temperature for -40 ~ +65 ° C
◆ Electromagnetic compatibility (EMC)
High-precision monocrystalline silicon remote pressure transmitter installation
◆ Power supply and load conditions:
① power supply voltage of DC24V, R ≤ (Us-12)/Imax kΩ, of which Imax = 23mA
② Maximum supply voltage: 42VDC
③ Minimum supply voltage: 12VDC, 15VDC (backlit LCD)
④Digital communication load range: 250-600Ω
◆ Electrical connection: M20 × 1.5 cable sealing buckle, terminals for 0.5-2.5mm2 wire
◆ Process connection: remote transmission flange in accordance with ANSI standards or DIN standards. Can be installed directly, flange size reference size chart
Monocrystalline silicon remote pressure transmitter physical specifications
◆ Material: measuring diaphragm box: stainless steel 316L; diaphragm: stainless steel 316L, Hastelloy C, tantalum
◆ Process connection: stainless steel 316
◆ Filling fluid: silicone oil, high-temperature silicone oil, ultra-high-temperature silicone oil, vegetable oil
◆ Pressure transmitter shell: aluminum alloy, exterior epoxy resin spraying
◆ Shell sealing ring: butyl rubber (NBR)
◆ Nameplate: stainless steel 304
◆ Weight: DN50 / 2 inches about 7-10kg; DN80 / 3 inches about 8-11kg; DN100 / 4 inches about 9-12kg
◆ Shell protection grade: IP67
Monocrystalline silicon remote pressure transmitter external dimensions
Table 4 Structural dimensions of the basic remote sealing device
Table 5 Dimensions for the connection of a remote sealing device with inner diaphragm according to DIN 2501
Monocrystalline silicon remote pressure transmitter electrical wiring diagram
