856系列压力变送器/ 传感器 

工业压力传感器 

特性... 

• 0-2到0-10，000psi压力范围 
• 电压或电流输出 
• NEMA 4/IP65带零位调节和跨程调节 

概况/设计原则: 

856系列压力传感器设计应用于NEMA 4/IP65防护等级的测量，采用铸铝外壳。这种坚固的外壳设计可抵抗外部作用，例如冲击、振动、温度及电磁干扰、射频干扰等。17-4PH不锈钢感应元件可在腐蚀性介质中使用。一个½"线状导管用于电气传输，可移动盖子使得终端接线简单易行. 

工作原理: 

Gems Sensors & Controls公司**技术的变电容传感器具有一个绝缘电极板，固定在传感器薄膜的中心，构成可变电容。当压力升高和降低时，电容随之变化。电容的变化被检测到并通过Gems的ASIC电路转换为线性模拟信号，产生一个和实际压力成比例的信号输出. 

典型应用: 

• 过程控制 
• 化学处理 
• 农业灌溉 
• 天然气管道 
• 谷物加工 
• 工业压力监测
  
  

  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