Markland Specialty Engineering Ltd.
Incorporated in 1967, Markland Specialty Engineering Ltd. Design
and manufacture state-of-the-art process controlinstrumentation
primarily for the water pollution control market. Markland ships
all over the world from their factory which is located close to
Toronto's Pearson International Airport. Markland have won
awards
and hold many patents for their instrumentation to monitor and
control the sludge/liquid interface in gravity settling tanks.
Markland are also one of the few manufacturers in the world who
make Suspended Solids Meters that measure sludge density using
ultrasonic attenuation which can operate in slurries that are
too
thick for optical Turbidimeters. Markland's patented DUCKBILL
style wastewater Samplers operate without mechanical moving
parts
for improved reliability and reduced maintenance. Technical
application engineering assistance is available no charge to
customers around the world via FAX. Please contact Markland for
sales engineering assistance.
Company Details
Year Established:
1967
Number of Employees:
8
Company Information
Reg Tansony
Title:
P.Eng., General Manager
Telephone:
(416) 244-4980
Fax:
(416) 244-2287
Email:
Click Here
J.R. Tansony
Title:
General Manager
Telephone:
(416) 244-4980
Fax:
(416) 244-2287
Email:
Click Here
Scott Langstaff
Title:
General Manager
Telephone:
(416) 244-4980
Fax:
(416) 244-2287
Email:
Click Here
Products
Measuring & Meas/Controlling Inst Nes
Sewage Treatment Systems Nes, Parts Of
Sampling/Monitoring, Systems, Water
Sludge Blanket Level Controls
Environmental Products And Services
Suspended Solids Meters
Marklands Series 502 Suspended Solids Meters use ultrasonic
attenuation to measure the concentration of sludges and
slurries that are too thick for optical methods. Non-hazardous
ultrasound can replace nuclear type Suspended Solids Meters.
An animated website (www.sludgecontrols.com) shows how the
system works. This microprocessor-based instrument features:
Automatic Push-button Calibration; Automatic Dynamic Damping;
Advanced Self-Diagnostics; and is insensitive to color. The
enclosure is NEMA-4X (IP67) and has an LCD readout; 4-20 ma
output; two set-point relays; and a serial port. A 4-page
brochure shows typical installations and contains a description
of the principle of operation plus technical specifications for
the various models.
Sludge Blanket Level Control/ Sludge Level Detector
Using no moving parts, Marklands #602 sludge Depth Meters
monitor and control the settled sludge level in gravity
Clarifiers, Lamellar inclined plate separators and Dissolved
Air Flotation (DAF) Thickeners. The patented microprocessor
based instrument can be used as a stand-alone system to fully
automate desludging by turning the desludge pump ON and OFF.
The meter can also act as an intelligent sensor for a central
computer or PLC. The #602 has a
4-20ma output, LCD read-out, membrane switch front panel, two
Relay outputs, RS-232 AND RS-485 serial ports, advanced self-
diagnostics and error trapping; all in a NEMA-4X enclosure.
Portable and fixed models are available.
Automatic Sampling System
Marklands Model 105 composite Sampler operates with no
mechanical moving parts for reliability, low maintenance and
low cost. Pneumatic Remote Sampler heads are available in
aluminium, Stainless Steel or PVC. Air post-purge and 70 foot
sample lift are standard. Samples can be CLOCK or FLOW
PROPORTIONAL and an external connection is provided to activate
the Sample from other instrumentation such as pH, conductivity,
liquid level, etc. Originally designed to operate in Raw
Sewage, the DUCKBILL Sampling System is ideal for heavily
loaded industrial wastewaters.
Sludge Level Detector
Portable SLUDGE GUN quickly locates the sludge bed in
clarifiers and settling tanks. A probe is lowered into the
liquid and high intensity bursts of infrared light travel from
an LED across the probe gap to a photo transistor, and a solid-
state circuit differentiates between liquid or sludge in the
gap. The circuit is designed to ignore solids suspended in the
liquid and to continue on down looking for the real sludge bed.
A loud variable pitch horn on the butt of the gun howls as the
probe nears the sludge, and the pitch and volume of the sound
increase as the probe passes through the cloud above the
sludge and into the sludge bed. By carefully listening to the
note, the operator can ignore the solids floating above the
sludge and can determine the location of the true sludge level.
Long battery life is assured by a state-of-the art pulsed
circuit that has only a 1% duty cycle (OFF 99% of the time),
plus a spring loaded trigger switch that turns the gun OFF as
soon as the trigger is released. Pencell batteries will last
one year in normal service. The sludge level is read from the
numbered markers on the cable. Standard cable length is 10
meters (33 ft.) and extra cable is stored on a spool at the
front of the gun. A thumb operated sensitivity control adjusts
for thick or thin sludges. Aluminium and PVC construction is
weather-proof and rugged; and the weight is 4 lbs. Fixed
installations for automatic sludge blanket control are also
available.
Services