1. ANALYSERS & INSTRUMENTS DEPT. OPASTOP GP2001H
Fives
Driving Progress
Fives Pillard

2. VISUAL Electronics board Measuring panel Sensor Fibre Optic OPASTOP
Fives Pillard

3. Urban waste incineration plants, biomass, cement plants…
USE
OPASTOP
OPASTOP GP 2001 H
PURPOSE
* Measurement of the dust emissions at stack
TARGETS
* All installations fitted with a burner firing oil, coal,
Urban waste incineration plants, biomass, cement plants…
Summary
Fives Pillard

4. VIEW OF FITTED PRODUCT Sensor Measuring panel Chimney duct OPASTOP
Summary
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5. OPERATING PRINCIPLE
OPASTOP
Smoke
Sensor
Optic fibre
The measuring panel emits a cone of light via fibre optic cable, into the area to be measured.
The light reflected from the suspended particles is received by a second fibre optic and sent to the measuring panel.
Optic fibre
Duct
Cone of light
Perfored disc
In order to be insensitive to outside lighting, the light emitted from the measuring panel chopped so as to produce a modulated signal at
a frequency of 1000Hz.
The measuring electronics only process light received at this frequency.
Motor
projector
Measure
Filter
amplifier
Cell of measure
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6. Dimensions of the sensor
OPASTOP
Sensor
Dimensions of the sensor
Support of sensor
Duct 6

7. FITTING (Precautions for assembly)
OPASTOP
"The sensor must be fitted at a measuring section which meets the conditions as defined in the Norm AFNOR NFX 44-052".
Duct
For ducts with a diameter less than 1m, it is imperative that the flange is fitted such that the large side of the sensor is parallel to the flue gas direction.
The sensor holding flange must be welded directly to the duct such that the sensor is flush with the inside of the duct.
So as avoid any disturbance, it is imperative that no element is closer than 1m from the sensor inside the duct. .
Follow the bending radius of the fibre optics (10 cm mini)
Do not exceed the maximum temperature of the fibre optics on the sensor (350°C with sweeping air as per recommendation).
Move the measuring panel as far away from the stack as possible, being sure not to make the fibre optics too stretched.
Sensor
Gases circulation
Sensor positioning
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8. TECHNICAL SPECIFICATIONS
OPASTOP
Power Supply : V~ / 115V~ 50Hz/60Hz
Consumption : Panel 100VA / Sensor resistor : 250VA
Panel operating temperature : 0 to 50°C
Panel dimensions : x 400 x 200
Weight : kg
Fibre optic lengths : 1,20m or 2,20m as standard
Sweeping air : Pressure 400mbar, flow rate 5 Nm³/h
Measuring range : Minimum range 0 – 10 mg
Maximum range mg
Display resolution : mg for ranges up to mg
1 mg for higher ranges 8

9. FITTING IN PLACE (Display)
OPASTOP
On the unit :
Numerical display of the mesure
Unit fault display
6 button keypad
Remote signalling :
Value measured on the current output 4-20mA
1 information relay for unit fault (Measuring fault, light generator faulty, etc…)
2 programmable information relays for exceeding threshold value 9

10. PRODUCT MAINTENANCE Maintenance : Calibration :
OPASTOP
Maintenance :
OPASTOP GP2001H = very low maintenance. However, a periodic inspection will check :
The general condition of the panel and the cleanliness of the electronics (de-dusting when de-energised).
The cleanliness of the fibre optics, (cleaning with a dry rag without needing to shut the unit down)
The condition of the seal on the panel door.
Calibration :
The opacimeter must be inspected at least once per year using the calibration device.
Summary

11. REGULATORY ASPECT The OPASTOP GP2001H is :
In conformity with Norm AFNOR NF X
Relating to the determination of dust concentration by opacimeter,
for continuous measuring of flue gas opacity
QAL1 as per norm EN14181
Aptitude of a measuring device for its function of measuring in a laboratory.
(The accuracy of the unit and its repeatability of the measure have been verified by an approved laboratory)
For info :
QAL2 imposes on the client to qualify the unit at site during commissioning by an
approved body (APAVE, Bureau Véritas,...) and to renew this inspection periodically.
QAL3 imposes to the client to periodically verify the validity of the measure over time
(by automatic self-checking by example)
 An opacimeter with automatic monitoring is in the process of development for 2010 11

12. ADVANTAGES OF OPASTOP
OPASTOP GP2001H = 30 years experience of Fives Pillard in dust monitoring.
Only one principle of measure for diameters from 400mm to 7 meters
Insensitive to outside lighting
The fibre optics allow it to be protected from the heat and vibrations of the chimney
Easy installation: only one hole, no alignment problem
Very low maintenance. However, need a periodic inspection (cleaning fibres optic)
Adaptable to special applications. High temperature, corrosive atmosphere, different length of optic fibre on demand
Services for assistance with installation, commissioning assistance , annual maintenance contract, etc…
Easy calibration thanks to its calibration device
OPASTOP
Fives Pillard