Clamp-on Power Meter
CW120 Application Notes
Yokogawa Meters & Instruments
Measurement of Cogeneration
Received
Actual Order!
Introduction Example: Monitor generating efficiency & electric energy
of cogeneration for 6 months to one year
Points : -Compact & easy to carry around
-Possible to measure more than 1 year with use of large volume memory
Cogeneration system flow
Supply to other load
Inverter
Converter
Transformer
←Electric
Commercial
Power
(Ventilation)
(Lighting)
Power
Generated Output
Exhaust
heat
Waste gas
heat exchanger
Generator
Micro gas-turbine
Monitoring
Hot water supply
Water Supply Boiler
Example: Super Markets/Hotels/Hospitals/Buildings/First Food Restaurants
Application # CW120-001
Energy Saving for Air-conditioning & Freezing machine
Introduction Example: Measure electric energy of Air-conditioning
and compressor of Freezing machine to check energy-saving effect
コンプレッサー対策２
12:55:00
12:56:30
時刻
Before
12:58:00
12:59:30
13:01:00
13:02:30
13:04:00
Point: Min data saving interval is 1 second
Can be measure electric energy for stand
up characteristics & Intermittent control
operation
Convenient to use external I/O
terminal when you use multiple units
After
対策後 インバータ ｋＷ＿２ 対策前 総計 ｋＷ
3.0
2.5
2.0
1.5
1.0
電力量 「ｋWh」
0.5
Electric energy
0.0
12:37:00
12:38:30
12:40:00
12:41:30
12:43:00
12:44:30
12:46:00
12:47:30
12:49:00
12:50:30
12:52:00
12:53:30
13:05:30
13:07:00
13:08:30
13:10:00
13:11:30
13:13:00
13:14:30
13:16:00
13:17:30
室外機
Outdoor equipments
Building
ventilation
Intermittent control
operation of compressor
室外機
Outdoor equipments
Application # CW120-002
Freezing
Machine
Energy saving for steel products metal rolling
Power
Measurement
Compressor →
Pressure Measurement
Furnace Metal rolling Cooling Bed
Refining
Shipment
System diagram
Purpose: Energy saving & Diagnosis on Pressure/air supply facility
1. Check operating condition for metal rolling system’s compressor
2. Measurement of Pressure/Air facility
Measure electric power & Pressure of compressor for 24 hours
3. Energy saving for compressor
Application # CW120-003
Evaluation for electric water heater (Heat pump)
Water Heater Manufacturer A
Evaluation group
Inspection of efficiency
•Measure short interval of power
consumption, power factor and
current
Set up
Set up
ＣＷ１２０
Data analysis by AP240E
Performance evaluation
Hot water
tank unit
Heat pump
unit
Power Supply
is
1P3W
200V
About 3kW
Application # CW120-004
Evaluation of electric home cooking equipment
Water Heater Manufacturer A
Evaluation group
Inspection of cooking heater
•Measure short interval of power
consumption, power factor and current
Set up
Set up
Very efficient
compare to use of
CW120
city gas
Data analysis by AP240E
Field performance
evaluation
Power supply is 1P3W,
200V and about 2kW
Application # CW120-005
Food company - Sesame oil production plant
Customer’s Benefit : No need to use PC. Datum-Y to
save all valuable data!
Crush
Management of trial product
manufacturing line
Set up
Set up
percolation
Machining
Refining
condition
management
Find out setting
of machining
condition
CW120
Electric power, Power
factor and Current
management
Modbus （RS-232)
Datum-Y
Pressure/Number of
revolutions/Temperature
management
Application # CW120-006
Field observation for Power Company
Problem: Orchid producers complain about consumption of electric power
Benefit for Customer: -Remote monitoring of electric power at plastic
greenhouse.
-Send measured data by FTP to reduce man power
& number of patrol
Using CW120 for field observation
Benefit of using CW120＋Datum-Y
zNo need to have PC at field
zCheck display through web
zRemote monitoring
zData transfer by FTP function
Transfer measured result by FTP
Mobile Phone
Electric
Power
CW120
Datum-Y
(Lighting)
(Ventilation)
MV100
Electricity
expense is very
high
Application # CW120-007
Electric power investigation & management for Vinyl manufacturing line
Vinyl manufacturing Plant
Temporarily set up CW120 for
electric energy measurement for
energy saving.
To check the efficiency,
need to measure plant
Set up CW120
Set up CW120
Manage electric energy consumption
at vinyl manufacturing line
sequencer
＊：NC210 is
RS-485/CC-LINK Converter
RS-485：PC-LINK Communication
NC210
Facility
No. 2 No. 6
No.1
& equipment
.
CW120
Manage Production Cost
・Calculate product basic
unit
Application # CW120-008
Loading...