Opacity meter Model : 4500 MK III

Make : LAND 

A high-specification opacity and dust monitor meeting global compliance standards for monitoring combustion processes.

Measuring Technique	Double pass transmissometry
Operating Wavelength	520 ± 20 nm
Light Source	Pulsed High Intensity LED
Measurement Range	Opacity 0-10 % to 0-100 % ; Optical Density 0 – 0.1 to 0-3.0 ; Dust Density 0-15 to 0-1000 mg/m3 (at 5 m pathlength)
Calibration Error	1.5 % opacity
Drift (long term)	< 0.3 % opacity / month
Thermal Stability	0.6 % opacity / 22 ° C ambient change
Angle of Projection	< 2 °
Angle of View	< 2 °
Response Time	≤10 s to 95 %
Averaging	Selectable from 10 s to 24 hr (1 s increment)
Pathlength	0.5 to 10 m / 20 in to 32 ft (extended pathlengths to 15 m available)
Calibration	Automatic zero and upscale check (selectable period 1 to 24 hr in 1 hr increments)
Zero Correction	Automatic correction for zero drift
Control Panel Display	128 x 64 pixel reflective backlit LCD
Control Panel Keypad	4 keys for data input
Control Panel Indicators	Power, System OK, Alarm, Calibration
Operating Temperature	-40 to 55 °C / -40 to 131 °F
Max. Flue Gas Temperature	600 °C / 1112 °F
Max. Flange Temperature	200  °C / 392 °F
Flue Gas Water Content	Not sensitive to water vapor. Condensed water must not be present in the measurement path.
Electrical Safety	IEC / EN 61010-2
EMC	EN 50 081 & EN50 082
Sealing	IP65 / NEMA4X
Modbus Interface	RS485; Opacity, Optical Density, Dust Density and Status information available
Analog Outputs	Isolated 4 to 20 mA Configurable as Opacity, Optical Density, Dust Density
Relay Outputs	System OK, Calibration, Alarm
Relay Rating	1 A @ 24 Vdc
Power Supply	24 Vdc nominal (18 to 30 Vdc), 0.3 A nominal (3 A startup)
Transceiver Dimensions (Hx W x D)	191 x 291 x 413 mm / 7.5 x 7.9 x 16.3 in
Retro-reflector Dimensions (H x W x D)	101 x 201 x 237 mm / 7.5 x 7.9 x 9.3 in
Transceiver Weight	6 kg / 13.2 lbs.
Retro-reflector Weight	3 kg / 6.6 lbs.
Enclosure	Cast Aluminum, epoxy coated
Accessories	Fail-safe Shutters, Blowers, Adapter Flanges, Remote Control Units, Additional Outputs Available
Approvals	QAL 1, EN 15267, EN 13284-2
Performance Specifications	ASTM D6216, US EPA PS-1, PS-11, Procedure 3