D-FW 231 Filter Monitor

Filter monitor to detect the efficiency and function of filters and filtration systems.
Dust Monitor for qualitative measurement of dust concentration in dry process or flue gas.

  • <p>D-FW 231</p>
    D-FW 231
  • In situ measurement, continuous measurement
  • Qualitative dust measurements for monitoring the functions of filters
  • Single-sided mounting on the channel
  • No moving parts within the duct
  • Easy installation, adjustment and maintenance without a PC
  • Applications
  • Certifications
  • Technical Data
  • Downloads
  • Power Plants
  • Bag-filter of any kind
  • Dust in the manufacturing industry
  • Incinerators
  • Crematoria

 


The measurement principle is not suitable for use directly behind electrostatic filters

  • cert gost 80
  • tuev 80
 D-FW 231 Application
measured component dust load
sample gas air, flue gas, non flammable process gas
dust concentration**
(typical values)		 1 - 25 / 2-50 / 5 - 100 / 10 -200 / 20 - 400 mg/m3
flow velocity*** 7-40 m/s
duct diameter > 0,15 m
sample gas temperature -20°C - 200°C / 500°C*
sample gas pressure
(relative to ambient pressure)		 -500 to +500 hPa, others on request
sample gas moisture 20 ... 80% rel. humidity
ambient temperature -20 to +50 °C
certificates CE
 D-FW 231 Technical Data
measuring principle measuring the transfer of electrical charge from dust particles to an electrode in flowing sample gas
type 4 (7) wire transmitter, in situ, mounted at stack, probe is in contact with sample gas
system-components D-FW 231 M Measuring head
D-FW 231 P probe/electrode
measuring ranges 0 - 100% Tribo-value, 6 per micro DIP switch selectable ranges
output range 0- 100% Tribo value
process connection G1" female thread, tube ID >= 36mm, L max. 100 (300*) mm
Adapters for flanges already mounted at the site on request
 D-FW 231 M Measuring head
measurement output 1 x 4–20 mA / 500 Ohm
control input 2 x transistor-input
zero check, integration
supply 18 - 36 V DC; 0,2A
IP protection IP65
dimensions (hxwxd) 180 x 80 x 270 mm (without D-FW 231 P Probe)
weight 1,9 kg
material housing: Al alloy, painted RAL 5017
probe connector: 1.4571
isolator: PTFE / ceramic*
  D-FW 231 P Probe
available rods 80, 250, 400, 700, 1000 mm
material 1.4571, others on request
remarks * variations
** the suitability of D-FW 231 for the listed ranges depends upon the kind of dust and its size distribution.
*** the measuring effect is dependant upon the flow speed.
Subject to technical modifications!

Go back