Siemens MAG 5000 User Manual

Page 68 MultiRanger 100/200 – INSTRUCTION MANUAL 7ML19981FB05
Rake (Screen) Control
MR 200
Rake (Screen) Control [MR 200]
This feature is only available on the MultiRanger 200.
Screens or rakes are mounted on the inflow channel of the wastewater treatment plant
to prevent debris from clogging the equipment.
When material builds up on the screen, a level differential is created, and the water level
is higher in front of the screen than behind it. When this differential reaches the
programmed setpoint, the MultiRanger activates a relay to operate mechanical rakes that
clean the screen and ensure a steady flow.
Setting a Rake Control
Transducer
Two
Transducer
One
Rake
P007 (3)
Max differential
between Point 1 and
Point 2 reading also
sets 100% scale for
bargraph and mA
output.
Transducer[1]
P006[1]
h[1]
Rake
Debris Conveyer
Transducer[2]
P006[2]
P007[2]
Water Level
h[2]
P007[1]
Flow
Point Three: Level Distance = h[1] –h[2]
Note: transducers may be mounted at variant heights.

Siemens MAG 5000 Specifications

General

Type	Electromagnetic Flowmeter
Protection Class	IP67
Material	Stainless Steel, Carbon Steel
Power Supply	24 V DC, 100-240 V AC
Accuracy	±0.2% of flow rate
Communication	HART, PROFIBUS, Modbus
Enclosure Rating	IP67
Ambient Temperature Range	-20°C to +60°C
Sizes	DN 2 to DN 3000
Lining Materials	PTFE, Hard Rubber
Electrode Materials	Stainless Steel, Hastelloy, Tantalum
Process Temperature	-40 to +180 °C (-40 to +356 °F) depending on liner
Process Pressure	Up to 40 bar (580 psi)
Approvals	ATEX, FM, CSA, IECEx
Flow Velocity Range	0 to 12 m/s
Output Signals	4-20 mA, Pulse, Frequency