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Working principle/working--------------------------------------------------------------------◆◆
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The medium pressure is transmitted to the measuring diaphragm located at the center of the δ chamber through the isolation diaphragm and silicone oil. The measuring diaphragm is a tensioned elastic element that produces corresponding displacement with the pressure difference on both sides. The displacement of the measuring diaphragm is proportional to the differential pressure, with a maximum displacement of 0.1mm. It is detected by the capacitor plates on both sides, and the differential capacitance between the measuring diaphragm and the capacitor plate is converted into a two-wire (4-20) mA DC output signal using electronic circuits.
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Structural composition/Structural components-----------------------------------------------------◆◆
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1
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Front cover of header
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6
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Explosion proof joint
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11
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splint
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2
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Header (Options)
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7
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connecting terminal
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12
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Sensor sealing ring
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3
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Metal cover
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8
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Header back cover
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13
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sensor
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4
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housing
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9
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Drain valve
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14
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nut
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5
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Nameplate label
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10
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bolt
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15
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Welded pipe joint component (option)
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Product Features/Product features-----------------------------------------------------------◆◆
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1. High precision
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2. Good stability
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3. Two line system 4-20mADC
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4. Solid components, plug-in printed circuit boards
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5. Small, lightweight, sturdy and earthquake resistant
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6. Range and zero point are continuously adjustable externally
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7. Positive migration can reach 500%; Negative transfer can reach 600%
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8. Adjustable damping
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9. Good one-way overload protection characteristics
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10. Less maintenance workload without mechanical movable parts
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11. Unified structure across the entire series, with strong interchangeability of components
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12. The membrane material for contact with the medium can be selected from corrosion-resistant materials such as 316L, TAN, HAAS-C, MONEL, etc
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13. Explosion proof structure, all-weather use
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14. Intelligent HART fieldbus protocol
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Performance parameters/performance parameters--------------------------------------------------◆◆
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1. Target audience: liquids, gases, and vapors
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2. Measurement range: 0-0.06kPa to 0-40MPa
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3. Output signal: 4-20mA DC
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4. 12-45VDC, usually 24VDC
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5. Load characteristics: related to the power supply, the load capacity (load characteristics) at a certain power supply voltage, the relationship between load impedance RL and power supply voltage VS is: RL≤（VS-12）
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6. Indicator: LCD or LFD digital display
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7. Explosion proof: Explosion proof type dIIBT4 b: Intrinsic safety type iaIICT6
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8. Range and zero point: externally continuously adjustable
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9. Positive and negative transfer: After the zero point undergoes positive or negative transfer, the absolute values of the upper and lower limits of the range and measurement range cannot exceed 100% of the upper limit of the measurement range (intelligent type: range ratio 15:1). The maximum positive transfer is 500% of the minimum calibration range; The maximum negative transfer is 600% of the minimum tuning range
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10. Temperature range: Amplifier operating temperature range: -29~+93 ℃ (LT type is -25~+70 ℃) Measuring element filled with silicone oil: -40~+104 ℃ Flange transmitter filled with high-temperature silicone oil:+15~+315 ℃, ordinary silicone oil: -40~+149 ℃
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11. Static pressure: 1, 4, 10, 25, 32MPa
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12. Temperature: Relative humidity is 0-100% RH
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13. Volume change:<0.16cm ³
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14. Damping (step response): When filled with silicone oil, it is generally continuously adjustable between 0.2s and 1.67s
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Technical parameters/Technical parameters-------------------------------------------------------◆◆
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(Without migration, under standard working conditions, filled with silicone oil, 316 stainless steel isolation diaphragm)
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1. Accuracy: ± 0.075% (0 intelligent type), ± 0.1% (intelligent type), ± 0.25%, ± 0.5%
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2. Dead zone: None (≤ 0.1%)
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3. Stability: Absolute value of basic error not exceeding the maximum range within six months
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4. Vibration effect: On any axis, the vibration frequency is 200Hz
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5. Power supply impact: less than 0.005% V of the output range
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6. Load impact: If the power supply is stable, the load is not affected
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7. Installation position impact: Maximum zero point error of 0.24kPa can be generated
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other
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1. Isolation membrane: 316 stainless steel, Hastelloy C-276, Monel alloy, titanium or tantalum
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2. Exhaust/Drain Valve: 316 Stainless Steel
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3. Flanges and fittings: 316 stainless steel
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4. Contact medium "O" ring: nitrile rubber, fluororubber
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5. Filling fluid: silicone oil or inert oil
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6. Bolt: 316L stainless steel
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7. Electronic casing material: low copper aluminum alloy
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8. Pressure connector: flange 1/4NPT, center distance 54mm; joint 1/2NPT or M20x1.5 male threaded ball cone seal, with center distance of 50.8, 54, 57.2mm when equipped with joint
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9. Signal wiring hole: G1/2
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Product selection/product selection------------------------------------------------------------◆◆
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code
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name
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HH
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Capacitive intelligent transmitter
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code
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describe
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0
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negative pressure
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1
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gauge pressure
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2
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Absolute pressure
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code
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measuring range
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1
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0-0.06～0.3KPa
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2
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0-0.25～1.5KPa
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3
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0-1.2～7.2KPa
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4
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0-6～36KPa
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5
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0-30～180KPa
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6
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0-160～1000KPa
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7
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0-400～2500KPa
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8
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0-1600～10000KPa
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9
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0-4000～25000KPa
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0
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0-7000～40000KPa
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code
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Type 1
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0
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Standard type
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1
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Single flat flange type
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2
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Double flat flange type
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3
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Single socket flange type
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4
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Double socket flange type
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5
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One flat and one inserted flange type
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code
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Flange specifications
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0
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DN25
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1
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DN50
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2
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DN80
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3
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Other specifications
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code
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Type 2
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0
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Common
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1
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Ordinary intelligent type (HART communication)
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Code name
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meaning
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MO
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Without display
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M1
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Digital indicator header
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E1
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Ordinary cable joint
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E2
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Explosion proof cable joint
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B1
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Pipe bending bracket
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B2
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Plate mounted bending bracket
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B3
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Pipe mounted flat bracket
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G1
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Waist flange
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G2
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Welded pipe joint
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G3
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Integrated three valve group
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i
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intrinsically safe
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d
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EEx d
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G
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≤ 200 ℃ (high-temperature silicone oil)
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Standard type
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Anticorrosive materials
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Structural materials
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Isolation Diaphragm
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F12
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316L
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F13
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Ha Shi C-276
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F14
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Monel K-500
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F15
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tantalum
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F22
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316L
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F23
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Ha Shi C-276
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F24
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Monel K-500
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F25
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tantalum
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F26
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316L
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F33
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Ha Shi C-276
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F35
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tantalum
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F44
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Monel K-500
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F47
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3YC25
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Product dimensions/Product dimensions-----------------------------------------------------◆◆
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SP3051 transmitter external dimension diagram
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Measurement range (code)
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2. 3, 4
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6
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7
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8
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9
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M（mm）
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54
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52.2
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55.7
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57.2
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59
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Installation method/Installation method--------------------------------------------------------◆◆
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Pipe bending bracket
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Plate mounted bending bracket
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Pipe mounted flat bracket
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Pipe bending bracket
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Plate mounted bending bracket
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Pipe mounted flat bracket
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Connection method of pressure pipe
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Welded pipe joint connection
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Integrated three valve group connection
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Installation requirements/Installation requirements---------------------------------------------------◆◆
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1. Prevent the transmitter from coming into contact with corrosive or overheated measuring media.
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2. It is necessary to prevent debris from depositing inside the pressure pipe.
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3. The pressure conduit should be as short as possible.
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4. The liquid column pressure head inside the pressure guiding pipes on both sides should be kept balanced.
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5. The pressure pipe should be installed in a location with small temperature gradients and fluctuations.
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6. Prevent crystallization or low-temperature freezing inside the pressure pipe.
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7. Do not unscrew all exhaust/drain valves to prevent the sealing steel balls from falling off!
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Wiring Guide/Wiring guide-----------------------------------------------------------------◆◆
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Connection of non intelligent on-site wires
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