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(xiàn)場總線通信協(xié)議
優(yōu)點
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的可重復(fù)性和長期運(yùn)行穩(wěn)定性
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高精度： ±0.15%，鉑金級：±0.075%
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量程比100:1
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全模塊化設(shè)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(diào)試簡單，不需要借助其他操作工具
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現(xiàn)場菜單引導(dǎo)式操作
– 通過現(xiàn)場顯示模塊
– 通過4 ... 20 mA HART
– 通過PROFIBUS PA
– 通過FF基金會現(xiàn)場總線
應(yīng)用領(lǐng)域
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(lǐng)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(zhì)量
- 過程溫度可達(dá) 125°C (302°F)
- 通過多種認(rèn)證，滿足世界各地的應(yīng)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 FieldbusAccuracy 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
316LProcess connection Threads
Flanges (DIN, ANSI, JIS)Max. measurement distance 400m (1312ft) H2O Output 4...20 mA HART
PROFIBUS PA
FOUNDATION FieldbusCertificates / Approvals ATEX
CSA
FM
IECEx
TIIS
NACE
SIL
3A/ EHEDG approvals
inspection certificatesOptions 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
