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采用陶瓷傳感器的壓力變送器

具有模擬, HART, PROFIBUS PA 或FF基金會現場總線通信協議

優點

• 極高的可重復性和長期運行穩定性

• 高精度： ±0.15%，鉑金級：±0.075%

• 量程比100:1

• 全模塊化設計用于差壓、靜壓和壓力(Deltabar M - Deltapilot M - Cerabar M), 如：
  - 可更換的顯示單元
  - 通用的電子模塊

• 調試簡單，不需要借助其他操作工具

• 現場菜單引導式操作
  – 通過現場顯示模塊
  – 通過4 ... 20 mA HART
  – 通過PROFIBUS PA
  – 通過FF基金會現場總線

Cerabar M壓力變送器可用于解決以下測量問題：

• 各種過程控制領域中氣體、蒸汽或液體的絕壓和表壓測量
• 測量液體液位、體積或質量
• 過程溫度最高可達 125°C (302°F)
• 通過多種認證，滿足世界各地的應用需求

  測量原理	Hydrostatic
  Characteristic / Application	Smart and reliable pressure transmitter, with capacitive measuring cell and ceramic process isolating diaphragm (Ceraphire)
  Supply / Communication	4 ..20mA HART: 11,5...45V DC Ex ia: 11,5...30V DC PROFIBUS PA FOUNDATION Fieldbus
  Accuracy	0,15% Platinum 0,075%
  Long term stability	0,1% of URL/year
  Ambient temperature	-40°C...85°C (-40°F...185°F)
  Process temperature	-20°C...125°C (-4°F...275°F)
  Process pressure absolute / max. overpressure limit	60bar (900psi)
  Pressure measuring range	100mbar...40bar (1.5psi...600psi)
  Main wetted parts	Ceraphire Sealing Alloy C276 316L
  Process connection	Threads Flanges (DIN, ANSI, JIS)
  Max. measurement distance	400m (1312ft) H2O
  Output	4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus
  Certificates / Approvals	ATEX CSA FM IECEx TIIS NACE SIL 3A/ EHEDG approvals inspection certificates
  Options	local display
  Application limits	Measuring cell: ceramics If pressurized, possibly use differential pressure measurement with two pressure transmitters (electronic dp). Observe ratio head pressure : hydrostatic pressure