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Opacity/ Oxygen Analyser

Opacity & Dust Transmitter

( Dwyer )

General

Link select single output transmitter unit

Integrated air purge modules

Simple maintenance design

Ideal for boiler & bag house control system integration

 

Specifications:

OPAL 100 - Control Unit

Enclosure

IP65 weatherproof

Weight

0.8 Kg

Ambient Temperature

-10 to +50 Deg C

Power Supply

120 or 240vac, 50/60Hz, 125vA (specify on order)

Connection

5 pin quick connector (female) on 1.0 metre flying lead – to transceiver. Mains – 240vac 50 / 60Hz

Output

Re-transmitted 4-20mA signal via terminal connections via customer supplied output cable. Link select

1. OPACITY: 4-20mA = 0 – 100% Link select

2. OPTICAL DENSITY: 4-20mA = 0 – 0.6

Optical Sensors

Enclosure

IP65 weatherproof

Weight

3.5Kg transceiver, 1.2Kg retroreflector

Installation

Via 65NB stub flanges. (4 x 18mm holes on 127 pcd and 75mm bore)

Connection

5 pin quick connector (male) to flying lead on OPAL 100T junction box. (Option steel flex conduit cable to Junction box – max 20 metres))

Path Length

300mm to 3600mm

Optical System

Double Pass system using high power LED light source with electronic light modulation

Lens Protection

Optional air purge fittings for either air blower or plant instrument air.

Process Temperature

Up to 400 Deg C standard

Ambient Light Immunity

Nil effect from sunlight or artificial light sources.

Spectral Response

515 to 585 nm, less than 10% of peak response outside 400 to 700 nm .

Angle of View

<4.0° from optical axis

Angle of Projection

<4.0° from optical axis

Response Time

< 2 seconds, to 90% of actual value

Zero Calibration

via transceiver control pad – set clean stack conditions and press WHITE button

Span Calibration

via transceiver control pad – set blocked stack conditions and press BLACK button.

Maximum cable length

100 metres

Control Features

4-20mA signal testing sockets at stack location, push button calibration procedure,

Output selection

Via transceiver link selection:

1. Transmittance 0 – 100% (fixed range)

2. Opacity 0 – 100% (fixed range)

3. Optical Density 0 - 0.6 (fixed range)