856系列壓力變送器/ 傳感器 

工業(yè)壓力傳感器 

特性... 

• 0-2到0-10，000psi壓力范圍 
• 電壓或電流輸出 
• NEMA 4/IP65帶零位調(diào)節(jié)和跨程調(diào)節(jié) 

概況/設(shè)計原則: 

856系列壓力傳感器設(shè)計應(yīng)用于NEMA 4/IP65防護(hù)等級的測量，采用鑄鋁外殼。這種堅固的外殼設(shè)計可抵抗外部作用，例如沖擊、振動、溫度及電磁干擾、射頻干擾等。17-4PH不銹鋼感應(yīng)元件可在腐蝕性介質(zhì)中使用。一個½"線狀導(dǎo)管用于電氣傳輸，可移動蓋子使得終端接線簡單易行. 

工作原理: 

Gems Sensors & Controls公司**技術(shù)的變電容傳感器具有一個絕緣電極板，固定在傳感器薄膜的中心，構(gòu)成可變電容。當(dāng)壓力升高和降低時，電容隨之變化。電容的變化被檢測到并通過Gems的ASIC電路轉(zhuǎn)換為線性模擬信號，產(chǎn)生一個和實際壓力成比例的信號輸出. 

典型應(yīng)用: 

• 過程控制 
• 化學(xué)處理 
• 農(nóng)業(yè)灌溉 
• 天然氣管道 
• 谷物加工 
• 工業(yè)壓力監(jiān)測
  
  

  Specifications
  Input
  Pressure Range		0-10,000 psig (0-700 bar)
  Proof Pressure		See ordering chart
  Burst Pressure		See ordering chart
  Fatigue Life		>1 million cycles
  Performance
  Supply Voltage (Vs)		9-30 Vdc
  Long Term Drift		0.5% FS/year
  Accuracy <25 psi		±0.25% FS
  Accuracy >=25 psi< /P>		±0.13% FS
  Thermal Error Zero <25 psi		±0.02% FS/°F (±0.036% FS/°C)
  Thermal Error Zero >=25 psi< /P>		±0.01% FS/°F (±0.018% FS/°C)
  Thermal Error Span		±0.015% FS/°F (±0.027% FS/°C)
  Compensated Temperature		-4°F to +176°F (-20°C to +80°C)
  Operating Temperatures		-40°F to +260°F (-40°C to +125°C)
  Storage Temperatures		-40°F to +260°F (-40°C to +125°C)
  Zero Tolerance		.5% of span (adjustable)
  Span Tolerance		1% of span (adjustable)
  Mechanical Configuration
  Pressure Port		See ordering chart
  Wetted Parts		17-4 PH Stainless Steel
  Electrical Connection		Two 1/2" Internal Threaded Ports, Screw Terminal Strip
  Enclosure		Die-Cast Aluminum, NEMA 4/IP65
  Vibration		20g (MIL STD 202, Method 204, Condition C)
  Shock		200g (MIL STD 202, Method 213B, Condition C)
  Approvals		CE
  Weight		13.4 oz
  Voltage Output Units
  Output		0.1-5.1 Vdc (3 wire)
  Current Consumption		6 mA
  Min. Load Resistance		5000 ohms
  Current Output Units
  Output		4-20 mA (2 wire)
  Max. Loop Resistance		(Vs-9) x 50 ohms