Please take a look at the following literature which describes the unique features of the Markland Duckbill^® Sampling System which is suitable for raw sewage or heavily loaded liquids. If you have any questions, would like more information or a quote, please contact us.

For information about Markland's other products, such as Sludge Depth Meters or Suspended Solids meters please have a look at our home page at www.sludgecontrols.com

FIXED INSTALLATION COMPOSITE SAMPLING SYSTEM
MARKLAND MODEL 105 & 2105

CLOCK SAMPLING · FLOW PROPORTIONAL · EXTERNAL CONTROL

FUNCTIONS With the two external control terminals jumpered, dial sets time between samples. With jumper removed and an external normally open (N.O.) contact connected, momentary closures cause one sample to be extracted for every closure. This gives samples proportional to flow when connected to a Flow Meter Totalizer Integrator Switch. In addition, maintaining external contact closed turns the sampler clock ON, and clock continues to run and extract samples at time interval set on dial until maintained closure is broken. When connected to a 24-Hour Timer, delayed start-up or intermittent operation can be accomplished. If connected to a Float Switch, sampler can be turned on when liquid level rises, for example sampling storm water runoff. When connected to pH or other type meter, samples can be extracted only when a pollution parameter is out of limits. Remote start-up by radio or telephone signals is another possibility for this multipurpose Controller.

USES This versatile controller is designed to be used by industry, sewage treatment plants, laboratories, and pollution control authorities, where power is available. The Model 105 (illustrated) is used when compressed air is available. Model 2105 is (see below) is shipped with an air compressor for use where there is power but no air at the sampling location. THE MARKLAND SYSTEM Filter/Regulator/Gauge are recommended on Model 105 to clean and reduce high pressure air to the 15 - 35 p.s.i.g. required. Air Compressor supplied with Model 2105 is sized to give correct pressure directly. Markland supplies to Remote Sampling head, tubing, and sample collecting bottle which are needed in addition to the Controller for a complete sampling system.

INSTALLATION DETAILS

MODEL 105 SAMPLING SYSTEM (use where compressed air is available)

MODEL 2105 SAMPLING SYSTEM (use where there is no compressed air)

FLOW PROPORTIONAL Momentary contact closures in Flow Meter extracted samples proportional to flow. Each closure gives one sample 'shot'.	REMOTE START-UP Rising liquid level starts sampling at time interval set on dial.
24-HOUR TIMER Enables delayed start-up or intermittent operation. Clock samples taken as long as N.O. contact is closed.	REMOTE START-UP Remote signal closes N.O. contact & samples extracted at time interval set on dial as long as contact remains closed.

REMOTE SAMPLER

MARKLAND MODEL 200 PATENTED U.S.A. 3465595 U.S.A. 3803919 Canada 825402 Canada 967061 Italy 974957 Switzerland 560328 U.K. 1254375 France 7146094 Austraila 440067 Belgium 788101 Japan 835882 Others Pending

USES Samplers is designed to be installed submerged below liquid level at remote locations in open channels, sewers, tanks, clarifiers, sumps, reservoirs, lakes, rivers, etc. Samples can be 'called in' from any location to a central control point, or taken simultaneously from two or more locations. SIMPLE DESIGN Lack of mechanical or electrical parts gives reliable, trouble-free sampling. Easy to disassemble. There are no pumps, scoops, or vacuum systems to maintain. HOW IT WORKS Compressed air introduced into top fitting forces sample out of bottom fitting into collecting bottle. Rubber Duckbill® acts like a check valve and prevents air from escaping back through inlet. When top fitting is vented to atmosphere, hydrostatic pressure within liquid bath forces a fresh sample up vertical inlet and through Duckbill® slit until body is filled above vent fitting but below top of Duckbill®. A trapped air pocket in dome keeps Sampler from filling completely. Sampler is now ready for a burst of compressed air to 'call in' another sample to the collecting station. Reverse leakage of sample back through Duckbill® is impossible.

THE MARKLAND SYSTEM Plant compressed air supply is not necessary. We manufacture a wide range of Automatic Controls for 110 volt 60 Hz, 220 volts 50 Hz, and 12 V.D.C. for clock sampling, flow proportional, or portable applications. We can supply your complete sampling system including tubing & fittings, sample collecting bottles, small air compressors, regulators, etc. to monitor your process or effluent. NON-CLOGGING DUCKBILL Heart of the Markland System is our patented non-clogging rubber Duckbill® which acts like a 'living' check valve that closes around fibers or particulate matter without jamming. Large particles which could clog tubes can not get through Duckbill® lips which open a limited distance in the form of a thin slit acting somewhat like a living screen. Inside of Duckbill® is self cleaning. When air pressure is applied Duckbill® lips immediately close and squeezing-shut progresses downwards toward bottom inlet expelling ahead (in a sort of milking action) any contained solids which fall back into the stream due to gravity. The non-clogging capabilities of the Duckbill® are truly amazing, even in Raw Sewage, slurries, or Pulp/Paper wastes.

TYPICAL MARKLAND SAMPLING SYSTEM

BASIC SYSTEM                                     MULTIPLE POINT SAMPLING

DUCKBILL® FEATURES	DUCKBILL® ADVANTAGES
No Troublesome Pumps or Scoops	Reliable; Reduced Maintenance
Solid State Controllers	Reliable; Reduced Maintenance
60 Ft. Sample Lift Standard	Hight Lift Than Suction Systems
Pneumatic Sample Ejection	Inherently Explosion Proof; Controller Can Be Located Some Distance Away
Pneumatic System Post-Purge	Sampler & Tubing Blown Dry After Sample Ejection Reduces Cross Contamination & Possibility of Freezing
High Velocity Sample Ejection	Eliminates Tube Clogging & Sample Distortion Due to Solids Deposition in Tube
Simultaneous Multiple Point Sampling (See Diagram)	'Before & After' Sampling Accomplished With One Sampler & Two Heads Instead of Two Samplers; Simultaneous Variable Depth Sampling Yields Pollution Gradient Data
Modular Sampling System	Components can be selected & assembled to suit your specific sampling requirements

SPECIFICATIONS

Body Diameter - 73 mm. (2-7/8") Overall Height - 127 mm. (5") Mounting Lug - Projects 16 mm. (5/8")                      - Drilled two 7 mm. (9/32") Holes,                           51 mm (2") on centres *Sample Size per 'Shot' (Standard)    - 75 ml. (2 1/2 Oz.)    - 50 samples = 1 U.S. Gallon Duckbill Elostomers    - E.P.T. (Ethlyene Propylene Terpolymer), standard    - Buna-N (Nitrile), use only for oily wastes    - Viton (Flourocarbon), special order & extra charge *PVC Remote Sampler is available to take 200, 300, 400, or 500 ml. per 'shot'. Contact factory for other sizes.

Materials:    Model RS-200-ALUM        -Aluminum Alloy, Brass Trim, standard    Model RS-200-SS        -Type 316 Stainless Steel, all wetted parts.    Model RS-200-PVC        -P.V.C. Body, plastic tube fittings Example Specifications    Model RS-200-ALUM-EPT    Model RS-200-PVC-Viton, etc.

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http://www.sludgecontrols.com/105specific.html

48 SHAFT ROAD, REXDALE (TORONTO), ONTARIO, CANADA   M9W 4M2
Phone: (416) 244-4980		Fax: (416) 244-2287
E-mail: markland@sludgecontrols.com     Website: www.sludgecontrols.com