DSL-220 MkIII

Single Pass Opacity Monitor for monitoring opacity and smoke emissions

The DSL-220 Opacity Monitor is an optical instrument designed to measure the visible opacity of exhaust gas in a duct, stack or flue.

DSL-220 MkIII

The DSL-220 uses the single pass light transmission measurement technique, with Transmitter/Receiver arrangement. A light beam emitted from the Transmitter passes across the stack to a Receiver, which measures the intensity of the received light.

Increased particulate or smoke density in the stack gas attenuates the transmitted light and causes the intensity of the received light to fall. This reduction in intensity is measured and presented as % opacity. The higher the level of particulate or smoke present, the more light lost and therefore, the greater the opacity.

Optional accessories

Operator interface (OI)
90-260 Vac model available
Mounting flange installation kit
Laser alignment tool to assist with installation
Air purge blower kit (110 Vac / 230 Vac / 415 Vac)
Compressed air purge kit
Reference filters for routine calibration check of the instrument

Features

In situ measurement directly in exhaust gas flow
Measurement reading as % Opacity
Modulated green LED source for long lifetime stability and immunity to ambient light
Rugged 316 stainless steel construction
Choice of interface options enabling easy integration
Free utility software for PC based set-up control and data logging
Optional Operator Interface with different mounting configurations

Benefits

Low cost
Simple to install, commission and operate with an excellent reliability record
Rugged design with no moving parts so low maintenance
Latched head and lid design to enable ease of access for installation and maintenance

Specification

Measurement Performance

No.	Parameter	Units	Min	Max	Comment
1	Path Length (flange to flange)	m	0.5	20	Flange-to-flange separation
2	Measuring Range	%	0.0	100.0	User selectable
3	Accuracy	%	-2	+2
4	Resolution	%		0.1	Display resolution
5	Damping	s	1	60	Selectable
6	Drift with Temperature	%	-2	+2	Over any 20°C in the operating range
7	Operating Wavelength	nm	510	540	Green LED

Power & Air Requirements

No.	Parameter	Units	Min	Max	Comment
8	Voltage	Vdc	+24		Optional 90-260Vac PSU available
9	Voltage Tolerance	%	-10	+10
10	Nominal Current Consumption	mA		400
11	Power Up Current Consumption	mA		400
12	Air Supply Volume Flow	L/min	50	200	To each air-purge body
13	Air Supply Fitting				1” BSP threaded aperture in each air-purge body

Cable and Wire

No.	Parameter	Units	Min	Max	Comment
14	Cable type – TX/RX Interconnection	cores	6		Screened multi-core, such as Belden 9873
15	Cable type – OI/RX Interconnection	cores	4		Screened multi-core, such as Belden 9873
16	Wire Size at Terminal Connections	AWG	20	14

Interface Options

No.	Parameter	Units	Min	Max	Comment
17	Serial Comms				ModBus RTU via RS485 (OI or TRX) Internal USB (OI), external USB (RX)
18	Analogue Output (one)	mA	4	20	Isolated and scalable
19	Digital Relay Contacts (two)	A	0	3	@30Vdc (signal level and data valid)

Physical

No.	Parameter	Units	Min	Max	Comment
20	Ingress Protection: - TX/RX Heads		IP65		For external use
21	Ingress Protection: OI Wall Mounted OI Panel Mounted		IP65 IP64		Hinged door and terminal compartment shut From front face of panel when installed
22	Ambient Operating Temperature	°C	-20	+55	Air temperature around the heads
23	Operating Humidity	%		100	Air humidity around the heads
24	Gas Temperature	°C		+600	Heat insulating gaskets included (Higher temperatures on request)
25	Regulatory Compliance				2014/30/EU (Electromagnetic Radiation) 2014/35/EU (Low Voltage)
26	Materials: - TX/RX Heads	AISI/SAE 316L Stainless steel - Powder coated
27	Materials: - Air-Purge Bodies	Powder coated cast aluminium or stainless steel for demanding installations
28	Materials: - OI Wall Mounted - OI Panel Mounted	UL rated polycarbonate enclosure; aluminium front panel with PU laminate overlay and with nylon cable glands
28	Materials: - OI Wall Mounted - OI Panel Mounted	Powder coated steel back-box; aluminium front panel with PU laminate overlay and with nylon cable glands
29	Weight	kg		2.5	TX or RX head plus Aluminium Air-Purge body
30	Weight: - OI Wall Mounted - OI Panel Mounted	kg		1.3 1.3
31	Warranty	months	24		Return to base warranty. Extensions available

ASK A QUESTION

For further information on any of our products, please complete our contact form and a member of staff will respond as soon as possible.

Altenatively call us on +44 (0)1280 850521

Satisfied clients

Don’t just take our word for it, read what some of our clients are saying about our products.

"We have worked with DynOptic for several years. The equipment is sensibly priced, reliable and very easy to commission and service. The after-sales backup is excellent."

"We have used DynOptic dust monitors over the last 10 years. The instruments have been working reliably on our process over this time and furthermore correlate well with iso-kinetic samples."

"We have used DynOptic equipment in multiple applications. The instruments are operating to the Customer’s complete satisfaction, fully compliant to their technical specification."

Product Applications

Below are our core product applications, simply select them for more information about suitable monitors

Opacity

Dynoptic opacity monitors use the light transmission technique to measure the visible opacity of exhaust gas in a duct, stack or flue.

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Particulate

PArticulate

Particulate monitoring requires the measurement of the mass concentration of particulate matter in stack emissions to atmosphere.

LEARN MORE

Dust

Dynoptic dust monitors use DDP (optical scintillation which measures the dynamic fluctuation in light transmission as dust particles move through a light beam.

LEARN MORE

DSL-220 MkIII

Single Pass Opacity Monitor for monitoring opacity and smoke emissions

DSL-220 MkIII

Optional accessories

Features

Benefits

Specification

Download brochures

ASK A QUESTION

Satisfied clients

Product Applications

Opacity

Opacity

Particulate

PArticulate

Dust

Dust

Products

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