福德世推出带等速采样功能的抽取式前散射粉尘仪PFM 16 ED

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    The dust concentration measuring device PFM 16 ED is a highly sensitive system.   
  PFM 16 ED粉尘浓度测量设备是一个高灵敏度系统。  
It is used for continuous extractive measurement of dust contents in wet and sticky exhaust gases.
用于连续抽取湿粘性烟气的粉尘浓度测量。
Thereby an isokinetic gas sampling is possible.
因此可进行等速采样气体。

  
Highlights of the device
设备；亮点
• extractive dust measurement in wet and sticky exhaust gases
用在湿粘性排放烟气抽取式粉尘测量
• special device consisting of probe, measuring cabinet and blowers
特殊装置由探头，测量柜子和风机组成
• relatively small required space
所需空间小
• compact device → only 1 welding flange with integrated or separated return flange necessary
紧凑型设备→仅需1个一体化或分体式焊接法兰
• display option in mg/m3 by input of calibration parameters
显示选项，以mg / m3为单位输入校准参数
• isokinetic gas sampling possible
等速气体采样
• first-class price-performance ratio
一流的性价比




       For dust concentration measurement the measuring gas is sampled from the process by a temperature-controlled
probe and via a heated measuring gas pipe conveyed to a measuring chamber which contains
an optical measuring unit. The sucked off measuring gas is continuously diluted and dried with hot and
dust-free ambient air. The active principle of dust measurement is based on the optical scattered light
measurement. Therefore a laser lance unit is arranged in a cylindrical measuring chamber and streamed
with the conditioned measuring air. In the electronics of the control unit the signal of the optical unit is
converted to an equivalent dust signal.  
      用于粉尘浓度测量气体从过程中通过带温度控制的采样探头和经过加热的测量气体管道传送到含有光学测量单元的测量室。
吸入的测量气体被连续稀释并用干燥无尘环境空气加热。 粉尘测量的主要原理是基于光散射测量。 因此，激光枪单元布置在
圆柱形测量室中并流动带有调整的测量空气。 在控制单元的电子部件中，光学单元的信号为转换成等比例的粉尘信号。
       Via the display of the operating unit in the measuring cabinet the current measuring value is displayed. All
necessary parameters can be reviewed and set by the menu. The operating is carried out via the keypad.
For diagnostics and cleaning reasons the PFM 16 ED carries out a purging operation autonomously.
Thereby a zero and reference point control and a cleaning of the gas paths leading measuring gas is made
via the 3/2-way ball valve.
     通过显示测量柜中的操作单元，显示当前的测量值。 所有可以通过菜单查看和设置必要的参数。 操作通过键盘进行。为了找到诊断和清洁的原因，PFM 16 ED自主进行清洗操作。从而通过3/2通球阀进行零点和参考点控制以及引导测量气体的气体通道的清洁。
       Alternatively, the PFM 16 ED can be operated with compressed-air respectively nitrogen.
PFM16ED可以用压缩空气代替氮气进行操作。
Optionally, there is the possibility of an isokinetic gas sampling.
等速气体采样是一个可选项。


Isokinetic gas sampling (option)
等速气体采样（可选）
     At application of isokinetic gas sampling by the PFM 16 ED, at the dilution air blower a frequency inverter
is provided by which the rotational frequency and thus the volume flow of the dilution air of the device is set
automatically.
    在PFM 16 ED的等速气体采样应用时，在稀释风机上进行变频器提供了自动设定稀释空气的旋转频率和体积流量。
     For the function of isokinetic gas sampling the device offers extended hardware. Via the external 4…20 mA
current input, the duct velocity or the differential pressure with the aid of an additional pilot tube probe can
be preset to the device.
    对于等速气体采样的功能，该设备提供扩展硬件。 通过外部4 ... 20 mA电流输入，借助于附加的皮托管，可以预先设置好
烟道内流速或压差。
    The PFM 16 ED regulates the volume flow of the dilution air whereby the dilution ratio and therewith the
sampled measuring gas volume as well as the respective sampling velocity changes. Thereby the sampling
velocity is adjusted to the current duct velocity. Through this the device realises an isokinetic measuring gas
sampling. The volume flow in the measuring chamber of the sample probe and in the measuring pot of the
optical sensor stays constant.
PFM 16 ED调节稀释空气的体积流量，由此稀释比和采样的测量气体体积以及相应的采样速度发生变化。 因此，采样
速度被调整到当前的管道内烟气速度。 通过这种设备实现等速测量气体采样。 样品探头的测量室和光学传感器的测量池中
的体积流量保持不变。



Technical data
技术数据
Protection class:                 1
防护类型
Protection degree:            IP 55
保护等级
Probe:                                extractive sampling with GRP weather protection casing,
探头
                                          dimensions:  approx. 380 mm x 580 mm x 1400 mm (w x h x d), weight: approx. 15 kg;
                                           尺寸
                                           probe tube:  approx. 1000 mm, ∅ 65 mm
                                           探杆
Measuring cabinet and    combined design by profile rack,
blowers:测量柜子和风机     dimensions: approx. 600 mm x 1800 mm x 750 mm (w x h x d), weight: approx. 150 kg
                                          - measuring cabinet: steel sheet housing incl. heated measuring gas pipe and feed pipe
                                          - blowers (injector air, dilution air)
Welding flange:                  DN 80 PN 6 (special type with inner tube diameter of 100 mm), adapter gasket,separate or integrated return
焊接法兰
Measuring method:          optical dust measurement with laser beam (scattered light), extractive
测量方法
Measuring range:              dust in operation: 0...15 mg/m3 (max. 500 mg/m3)
测量范围
Calibration:                        via gravimetric comparison measurement
标定
Operational availability:    after 5 to 15 min (without preheating)
操作可用性
Display/operating:             4-line LC display, 3 status LEDs, 20 operating keys, maintenance switch,
显示/操作                            RS232 connection (service / option Modbus)
Media temperature:           max. 180 °C
介质温度
Exhaust humidity:              rel. humidity: 100%
外部湿度
Pressure against ambience:-30...+2 hPa
气压
Ambient temperature:      -20...+50 °C
大气温度
Flow of measuring gas:     6...12 m3/h (sucked measuring gas and dilution air)
测量气体流量
Power supply:                    3L, N, PE, 400 V AC 50 Hz, 4 kVA (max. 5x 4 mm2)
供电
Analogue outputs:            4x 4...20 mA, galvanically separated with common ground, burden max. 1 kΩ,
模拟输出                             max. 1 mm (at option of isokinetic gas sampling: thereof 1x output reserved /
                                           not alternatively usable)
Analogue input                 at isokinetic gas sampling used as input for external velocity, 4...20 mA, galvanically separated
(optional):模拟输入（可选）
Digital outputs:                 6 x potential-free contact, max. 35 V UC, 0.4 A, max. 1 mm
数字输出
Digital input:                     external switch contact for switchover of measuring/purging
数字输入
Clip contacts:                     max. 2.5 mm2
Measuring gas pipe:         approx. 2 m, heated, feed pipe parallel directed
测量气体管路
Exhaust gas pipe:              approx. 5 m
排放气体管路
Option:                              isokinetic gas sampling
可选
Special models are possible on request.