EMS770 Opacity Monitor

8/6/2019 EMS770 Opacity Monitor

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Environmental Monitor Service, Inc. PO Box 4340, Yalesville, CT 06492

Ph. 203.935.0102, Fax 203.634.6663 Email: [email protected]

EMS770 OPACITY/DUST MONITOR

The EMS770 is an economical modulated single-pass Opacity Monitoring

System with a user friendly microprocessor controller.

Path length 2 to 15 Ft (60 to 457cm)

The precision Green LED single beam Transmitter Solid-State electronic modulated source

provides continuous, low maintenance, precision

measurement of dust or opacity in industrial applications.

An economical Opacity/Smoke Density monitor designed

for easy installation in new and existing crematoriums,

bag houses and duct systems. The EMS770 is an ideal

monitor to meet Title V opacity (smoke) regulations, oven

exhaust, diesel exhaust, duct fire alarm systems. The

optional mg/m3

program provides a split screen display as

well as selectable outputs for mg/m3, opacity and Optical

Density (extinktion).

The standard backlit LCD microprocessor controller

communicates via RS-485 MODBUS, contains 2 current

outputs and has a 7 year battery backup. The industry

leading standard features and quality construction makes the EMS770 the choice for affordable,

quality smoke and dust monitoring. Available options include stainless steel weather covers and

NEMA 1 or NEMA 4 rated enclosures for the controller and sensor electronics.

SEE ALL OF OUR FINE PRODUCTS AT: www.emsct.com
http://htpp//www.emsct.com/http://htpp//www.emsct.com/http://htpp//www.emsct.com/


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EMS770 OPACITY SPECIFICATIONS

Control unit:

Microprocessor Controller 24VDC Power +/-10%

Approvals CE and UL Listed

Panel Mount or Din Rail Compact Size 3.78 X 3.78 x 5.52 (96 x 96 x 64 mm)

Environment IP65/NEMA4X (for panel, when mounted)

Dis la LCD Back Li ht

Communications RS/485 Port Supports MODBUS Protocol

Memory Backup Battery 7 years typical

Outputs Two 4-20mA, Opacity field programmable full scale

Relays 6, SPST relays for alarms, 120VAC or DC

High Opacity Alarm 1 relay, display icon, adjustable set point and adjustable delay

Early Warning Alarm 2 relays, display icon, adjustable set point

Boiler Shut Off 1 relay high opacity alarm triggers a boiler shut off relay contact

Audible Alarm 1 relay triggered by the high opacity with reset push button to sil

Air Purge Alarm 1 relay, digital input for indication and alarming for loss of air flow

Ambient Temperature +4 to +52o C (+40 to + 125o F)

Sensor electronics: 115 VAC 50/60 Hz 1 am +10%;

230 VAC, 50/60 Hz, 0.5 amp +10%

Sensors:

Enclosure NEMA-1

Receiver over all 6.75 x 2.0 inch (17 x 5.0 cm)

Transmitter over all 6.75 x 2.0 inch (17 x 5.0 cm)

Lens clean air inlet 1/8 inch N.P.T.


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Optical System Single Pass

Transmitter/Receiver Transmitter: 1.25 Lbs (0.56kg), Receiver: 0.9 Lbs (0.41kg)

Li ht Source LED Green LED > 6 ears

Ambient Tem erature From +4 to +52o C +40 to + 125o F

Process Gas Up to 750o F (400 o C), standard (higher available-contact facto

Mounting Flanges Mounts to 1 inch pipe nipple (NPT) - Others available

Ambient Li ht Immunit Solid-state electronic LED modulation

Wirin 2 air twisted shielded cable, 22 AWG

Design and performance:

Peak and Mean Spectral

Res onse

Photopic; 515 to 585 nm, less than 10% of peak response outsid

desired 400 to 700 nm re ion.

An le of View < 6.0 o from o tical axis

An le of Pro ection < 6.0 o from o tical axis

Accurac +/- 3% o acit to 88% o acit , +/- 5% o acit from 89% to 100%

Res onse time < 5 second

* Calibration check Externalwith span filter and clear condition zero adjustments.* Optional equipment


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EMS770 Opacity Monitor

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