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压力变送器 LHC-M51

来源:未知    日期:2017/05/17    浏览量:


液位测量技术是化学、化工、环境和相关行业中过程控制管理的基本技术。

液位传感器可以检测到当前浸入的高度。它通过介质表面与预设参考高度的差值来测量实现。连续液位测量带有使用率评估,漏液控制及精确流程控制(VDI/VDE Directive 3519)的功能

随着液位的升高液体的压力增加。这样静压通过一个不锈钢薄膜被传送给测量单元。泡沫、结块、液体的电气波动特性和容器形状对不影响测量值。

如果密度已知,液体的液位可以由静压来决定。压电式负荷单元通过一个不锈钢绝缘薄膜和一个膜片密封被连接到测量液体中。 测量单元的输出信号由信号调节器转换成:4mA…20mA模拟量信号或脉宽调制电流信号(PLM).

产品特点:● Device for absolute pressure and gauge pressure measurement in gases, steams or liquids
               ● Large selection of process connections: universal use
               ● Temperature range up to 130 °C (266 °F)
               ● Pressure range up to 400 bar (6000 psi)
               ● Easy commissioning without the need for an operating tool
               ● Configurable by PACTware
               ● Up to SIL 2 acc. to IEC 61508


一般特性:
Construction type sensor: silicium sensor
metall diaphragm
Supply:
Rated voltage versions for safe area:
11.5 ... 45 V DC, 2-wire
11.5 ... 35 V DC, HART, 2-wire
9 ... 32 V DC, PROFIBUS PA
version for hazardous area see safety information (SI)
输入:
Measured variable absolute or relative pressure
Measurement range 0.4 ... 400 bar
max. turn down: 20:1
输出:
Output signal 4 ... 20 mA , analog , 2-wire
4 ... 20 mA with superimposed digital communication protocol HART 6.0, 2-wire
digital communication signal PROFIBUS PA (Profile 3.02)
Communication 4 ... 20 mA HART (standard)
PROFIBUS PA (option)
指令符合:
Electromagnetic compatibility  
  Directive 2014/30/EU EN 61326-1:2006 , EN 61326-2-3:2006 , EN 61326-2-5:2006
Low voltage  
  Directive 2014/35/EU EN 61010-1:2010
符合:
Degree of protection IEC 60529:2001
测量精度:
Accuracy reference accuracy: ±0.15 % (standard), ±0.075 % (platinum)
The reference accuracy comprises the non-linearity according to limit point setting, hysteresis and non-reproducibility acc. to IEC 60770. The data refer to the calibrated span.
Long-term drift up to ±0.1 % of upper range limit (URL)/year
工作条件:
Process conditions  
  Medium temperature -40 ... 125 °C (-40 ... 257 °F)
hygienic versions: -40 ... 130 °C (-40 ... 266 °F), 150 °C/1h (302 °F/1h)
周围环境:
Ambient temperature -40 ... 85 °C (-40 ... 185 °F)
with display : -20 ... 70 °C (-4 ... 158 °F)
机械特性:
Degree of protection IP66, NEMA 4X
IP68, NEMA 6P (24 hours in water 1.83 m (6 ft) deep)
IP69K (with separate housing and FEP cable)
Connection gland M20
thread M20, G1/2, NPT1/2
device plug M12
HAN7D Harting connector, angled
valve connector acc. ISO 4400, cable 5 m
Material materials in contact with process : 316L, Alloy C, rhodium>gold
housing:
- die-cast aluminum with protective powder-coating on polyester base, housing F31
- stainless steel AISI 316L (1.4404), housing F15
measuring cell seal: no, welded measuring cell
Process connection threads ISO 228: G1/2, G1, G1-1/2, G2
threads ANSI: NPT1/2, NPT1, NPT1-1/2, NPT2
hygienic process connections: Clamp, Varivent, DRD, DIN 11851, DIN 11864, NEUMO, APV, uni adapter
flanges: EN 1092-1: DN 25 ... DN 80, ANSI 16.5: 1 ... 4 inch, JIS B2220
与危险区域性应用参数:
EC-Type Examination Certificate see instruction manuals (SI)
Directive conformity  
  Directive 2014/34/EU EN 60079-0:2012+A11:2013 , EN 60079-11:2012 , EN 60079-31:2009
国际认证:
FM approval see instruction manuals (SI)
CSA approval see instruction manuals (SI)
IECEx approval see instruction manuals (SI)
许可和认证:
Drinking water approval NSF61 approval
Overspill protection see approval (ZE)
Marine approval German Lloyd (GL)
附件:
Designation see technical information (TI)


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