Explosion proof smoke and dust measuring instrument PFM 92Ex

NegotiableUpdate on 04/03

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The filter monitor PFM 92 Ex can qualitatively monitor the concentration of smoke and dust in hazardous areas caused by smoke explosions, especially for recording the dust content in clean gases after dust removal equipment. The measurement principle is based on the application of frictional electric effect (charge transfer generated by collision and contact between particles on the surface of an object)

Product Details

PFM 92Ex Explosion proof Dust AnalyzerIntroduction of

The basic explosion-proof version consists of a probe and a control unit

The scope of application is as follows:

Probe: Ex II 1D

Probe: Ex II 3D

- Control unit: Non explosion proof area

◆ Easy installation:

- Control unit: wall mounted

- Probe: 1 '- sleeve (DIN 2986), with optional flange DN 25 PN 6

◆ Analog output: Smoke and dust: 4 .. 20 mA

◆ Digital output (no potential):

- Limit values 1 and 2 (adjustable)

- Fault

◆ 4 adjustable measurement ranges:

◆ Proportional relationship 0, 33: 1, 3, 33: 10

◆ Used for zone 20 (probe) and zone 22 (probe)

PFM 92Ex Explosion proof Dust AnalyzerApplications and functions
The filter monitor PFM 92 Ex can qualitatively monitor the concentration of smoke and dust in hazardous areas caused by smoke explosions, especially for recording the dust content in clean gases after dust removal equipment. The measurement principle is based on the application of frictional electric effect (charge transfer generated by collision and contact between particles on the surface of an object)

The dust collector control device consists of an independent probe installed in the clean air path, which splits the charges generated by collision and friction into current, and then converts it in the evaluation device, amplifies it, and outputs 4 Standard signal output of 20 mA. By using a limit value detector, one can see or hear the parts that exceed the allowable limit value.

PFM 92Ex Explosion proof Dust AnalyzerTechnical data

control unit:	Weather resistant aluminum boxIP 65,size: 210 x 240 x 280 mm （H x W x D）
probe:	Stainless steel probe rod with preamplifier at the top of the probe, probe length300 mm （adjustable）, IP 65
Measuring principle:	smoke and dust:belt1Measurement of a frictional electric sensor
measurement range:	0,1 . .. 1.000 mg/m³ （Special range, please inquire）
calibration:	Measurement method by weight comparison
display:	LCD-display screen（0 ... 100 %）
medium temperature:	max. 280 °C
ambient temperature:	-20 . .. 50 °C
Dew point difference:	min. 5 K
flow velocity:	>3 m/s
analog signal:	1 x 4 . .. 20 mA （smoke and dust）
digital signal:	3 A dry contact point（fault,limit value 1 and2）
power supply:	230 VAC
ATEX-Instructions:	probe:Explosion-proof ratingEx II 1D zone 22,Probe head:Explosion-proof ratingEx II 3D,control unit:Non explosive area
TÜV-certification:	TI-Air