采用陶瓷传感器的压力变送器

具有模拟, HART, PROFIBUS PA 或FF基金会现场总线通信协议

优点

• 极高的可重复性和长期运行稳定性

• 高精度： ±0.15%，铂金级：±0.075%

• 量程比100:1

• 全模块化设计用于差压、静压和压力(Deltabar M - Deltapilot M - Cerabar M), 如：
  - 可更换的显示单元
  - 通用的电子模块

• 调试简单，不需要借助其他操作工具

• 现场菜单引导式操作
  – 通过现场显示模块
  – 通过4 ... 20 mA HART
  – 通过PROFIBUS PA
  – 通过FF基金会现场总线

Cerabar M压力变送器可用于解决以下测量问题：

• 各种过程控制领域中气体、蒸汽或液体的绝压和表压测量
• 测量液体液位、体积或质量
• 过程温度最高可达 125°C (302°F)
• 通过多种认证，满足世界各地的应用需求

  测量原理	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