DSL-230M
Smoke Density Monitor for monitoring marine emissions
With Port Authorities around the world increasingly regulating emissions from ships, the DSL-230M Smoke Density Monitor is an optical instrument specifically designed to measure the concentration of smoke and particulate emissions within the marine industry.
DSL-230M
The DSL-230M 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 smoke density in the stack gas attenuates the transmitted light and causes the intensity of the received light to fall. When calibrated against standard reference measurements, this reduction in intensity can be used to calculate the smoke density and present a reading in mg/m³.
Features
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Lloyds Type Approved smoke density monitor designed specifically for the marine industry
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In situ measurement directly in exhaust gas flow
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Measurement reading as mg/m³ (when calibrated against standard reference measurements)
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Modulated green LED source for long lifetime stability and immunity to ambient light
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‘Intelligent’ sensor so no requriement for a local control unit
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Choice of interface options enabling easy integration into ship’s control system
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Optional Operator Interface with panel mount configuration
Benefits
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Simple to install, commission and operate with an excellent reliability record
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Rugged design with no moving parts so low maintenance
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Latched head design to enable ease of access to optics for preventative maintenance
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Free utility software for PC based set-up, control and data logging
Specification
Measurement Performance
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
1 | Measurement Range | ppm | 0 | 300 | |
2 | Resolution | ppm | 1 | Display resolution | |
3 | Accuracy |
ppm % |
-2 -2 |
+2 +2 | |
4 | Response Time | Seconds |
40 20 |
T90 T63 | |
5 | Temperature Stability | % | -3 | +3 | Over full temperature range |
6 | Span Drift |
% / Months | -1 | +1 | |
7 | Calibration Interval | Months | 6 | 12 | Recalibrate or replace sensor module |
Power
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
8 | Voltage | Vdc | +24 | 90-260 Vac with optional PSU | |
9 | Voltage Tolerance | % | -10 | +10 | |
10 | Nominal Current Consumption | mA | 40 | ||
11 | Power Up Current Consumption | mA | 50 |
Interface Options
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
12 | Analogue Output | mA | 4 | 20 | (ESU-420 only) |
13 | Serial Output | Modbus RTU via RS485 (ESU-485 only) |
Physical
No. | Parameter | Units | Min | Max | Comment |
---|---|---|---|---|---|
14 | Ingress Protection | IP65 | Gas port IP54 | ||
15 | Operating Temperature | °C | -20 | +50 | |
16 | Operating Humidity | % | 15 | 90 | Non condensing |
17 | Ambient Pressure | mBar | 800 | 1100 | |
18 | Regulatory Compliance |
2014/30EU (Electromagnetic Radiation) 2014/35/EU (Low Voltage) 94/9/EC (ATEX) | |||
19 | Materials | Stainless steel reinforced Polymer | |||
20 | Dimensions | mm | 140 x 98 x 57 | ||
21 | Weight | kg | 0.6 | ||
22 | Warranty | Months | 24 | Return to base warranty. Extensions available |
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