Kobold DOR Specifications

Insertion Paddle Wheel

Flow Meter / Monitor

for Low Viscosity Liquids

measuring

•

monitoring

•

analyzing

DOR

● Flow Range:

5.5 … 180 GPM to 25,000 … 800,000 GPM

● Flow Velocity Range: 1.0...33.0 ft/s

● p

: 1160 PSI

max

● t

: 300 °F

max

● Connection: 1½" NPT, 2" NPT Male, R 1½,
& R 2 Male for Pipe Sizes: 1½"...100"

● Linearity: ± 1.5% with Well Established
Flow Profile

● Body Material: Stainless Steel

KOBOLD companies worldwide:

ARGENTINA, AUSTRALIA, AUSTRIA, BELGIUM, BULGARIA, CANADA, CHILE, CHINA, COLOMBIA,
CZECH REPUBLIC, EGYPT, FRANCE, GERMANY, HUNGARY, INDIA, INDONESIA, ITALY, MALAYSIA,
MEXICO, NETHERLANDS, PERU, POLAND, REPUBLIC OF KOREA, ROMANIA, SINGAPORE, SPAIN,
SWITZERLAND, TAIWAN, THAILAND, TUNISIA, TURKEY, UNITED KINGDOM, USA, VIETNAM

01/08-07-2019

KOBOLD Instruments, Inc.
1801 Parkway View Drive
Pittsburgh, PA 15205

Main Ofce:

1.800.998.1020

1.412.788.4890
[e-mail]
www.koboldusa.com

Insertion Paddle Wheel Flow Meter / Monitor Model DOR

Description

The DOR series insertion paddle wheel flow sensor offers cost effective
measurement of the flow of water or water-like liquids in large pipes.
The sensor is inserted into the process piping via a suitable tee,
thread-o-let or half coupling. Flow through the pipe results in rotation
of the paddle wheel which is proportional to the flow velocity and to
the flowrate in the pipe. The DOR is much less expensive than full
bore flowmeters, especially in larger pipe sizes. Insertion paddle wheel
sensors are rugged and boast exceptional tolerance to dirt and solids.

The DOR features an all 316 L stainless steel body. The rotor is made of
PVDF or PEEK, with a long-life graphite/PTFE self-lubricating bearing.
It has an integral, precision insertion mechanism that allows insertion of
the rotor to a precise depth in the pipe for optimal readings. Available
signal outputs include NPN open collector frequency, and/or reed
contact frequency or millivolt frequency. Optional indicators include
battery powered totalizers and loop powered rate meter/totalizers
with outputs and batch controllers. The DOR-5 may be installed
through a 2" ball valve to allow serviceability with minimal process
interruption. With its symmetrical design, the DOR may also be used
for bi-directional flow measurement when fitted with the quadrature
output option in conjunction with an appropriate discriminator circuit
or display.

Applications

● HVAC: Hot and Cold Water, Fire Systems, and Thermal
Energy Monitoring

● Municipal: Water Distribution, Water Management and
Water Treatment

● Irrigation: Water Management

● Water Treatment: Chlorination, Desalination and Mechanical
Filtration Plants, Chemical Injection Systems

● Refineries: Fire and Cooling Systems

● Power Generation: Boiler Feed Water, Steam Condensate,
Process Water and Water Balancing

● Chemical: Process & Cooling Tower Water, Chemical and
Water Batching

● Others: Cement Manufacturing, Flow Testing, Fire Truck
and Hydrant Flow Monitoring, Food Processing, Pulp/Paper,
Mining, and Fountains

Technical Details

Velocity Range (Linear): 1.0 ... 33 ft/s

Linearity: ±1.5% w/Well Established Flow Profile

Repeatability: ±1% of f. s. at Factory Conditions

and Optimal Straight Runs

Max Pressure: 1160 PSI

Temperature Range: 5 … 212 °F Standard, See Max. Allowable

Media Temperature Table for Other Options
and Restrictions

Materials

Body: 316L Stainless Steel

Rotor: PVDF or PEEK (Depending on

Model)

Rotor Shaft: 316L Stainless Steel

Bearing: Graphite/PTFE

Seals: FKM (Standard): 5 … 300 °F

EPR (Ethylene Propylene Rubber):

-40 … 260 °F
NBR (Nitrile): -40 … 260 °F

Electronics

Max. Frequency: 220 ... 240 Hz (Hall Effect and

Voltage Output)

73 ... 80 Hz (Reed Switch Output)

Wiring (Standard): 5 Ft. (DOR-42), 3 Ft. (DOR-52)

Transmission Distance: 3000 ft Maximum, without

Integrated Electronics

Protection Class: IP68 (Cable Connection)
Straight Piping
Requirement: Minimum: 10xd (Upstream), 5xd

(Downstream)
Optimal: 25xd (Upstream), 10xd
(Downstream)
Weight (Approx.): 3.6 lb (DOR-4), 5.5 lb (DOR-5)
without Electronics

2

www.koboldusa.com

No responsibility taken for errors;

subject to change without prior notice.