- 您现在的位置：买卖IC网 > Sheet目录218 > CUB4I020 (Red Lion Controls)DC METER W/RED BKLTING
CURRENT METER SCALING
The CUB4 Current Meter display can be scaled to almost any lower
numerical value. Setting the Scale switch to the “ON” position enables the
Scale Potentiometer, which is used with the current range selection jumper to
scale the unit. The Scale potentiometer can be set to divide the normal current
reading by a division factor between 1 and 13.
BLOCK DIAGRAM CUB4I
Analog Meter Replacement
A manufacturer wants to replace several 1 mA DC analog meter movements
with easy to read CUB4 Current Meters with backlighting. One application
involves measuring the flow rate of a liquid to indicate 0 to 250 gallons per
minute.
Since this application requires a non-standard readout, it will be necessary to
scale the display. The Scale DIP switch is set to the “ON” position to enable the
Scale Potentiometer. The Division Factor is calculated using the formula:
1 COM
V+ 2
(Maximum output) x D.D.P.
D.F. =
(Desired Display)
CUB4I
EXAMPLE: The CUB4 Current Meter has been connected to measure a circuit
current to 120.0 mA maximum. However, in this application, the display is to
indicate percent of load current with 120.0 mA equivalent to 100.0 percent.
The scale potentiometer is adjusted to reduce the normal 120.0 mA signal input
display reading of 120.0 to indicate the desired reading of 100.0 on the display.
Scaling to obtain a numerical readout higher than the normal value of the
current can also be accomplished in most cases by selecting a lower current
range. However, the maximum current for the range must not be exceeded.
(See Specifications for maximum input currents.)
TYPICAL VOLT & CURRENT MEASUREMENT APPLICATIONS
VOLTMETER APPLICATION CURRENT METER APPLICATION
Indicating the Speed of a D.C. Motor
A foreman in a plant wants to get a more accurate indication of the speed at
which a variable speed DC motor drive is operating. The only indication he has
now is the position of a dial on the control panel.
The motor has a tachometer generator that will output a 10 VDC signal when
the motor is running at its maximum speed of 1800 RPM. The power supply of
the control has a 15 VDC output that can supply power to
the CUB4V.
1 2 3 4
3 SIG.- SIG.+ 4
ON
1 2 3 4
199.9uA 19.99mA
1.999mA 199.9mA
RED LION CONTROLS
YORK, PA. MADE IN U.S.A.
D.F.
D.F.
=
=
10 x 1000
1800
5.5
POWER
SUPPLY
1
2
3
4
5
6
7
8
3 SIG.+
1 COM
ON
D.P.
1 2 3 4 5 6 7 8
V+ 2
FLOW
+
-
RED LION CONTROLS
YORK, PA. MADE IN U.S.A.
TACHOMETER
GENERATOR
POWER
SUPPLY
CUB4V
MOTOR
Since 1 mA of current flow requires a display reading of 250, the CUB4
Current Meter will need to be scaled. The Scale DIP switch is set to the “ON”
position enabling the Scale Potentiometer. The proper current range for the
application is then selected. The Scale potentiometer will divide the display
reading by 1 to 13, for the particular current range selected. A reading of 250 is
4 times less than the normal reading at 1 mA for the 0 to 1.999 mA range,
therefore the jumper is installed in the 0-1.999 mA range position. No decimal
point is selected because the resolution is 1 gallon.
The CUB4 Current Meter can now be scaled. Apply 1 mA to the signal input
and adjust the scale potentiometer to the desired reading.
Since the division factor falls between 1.2 and 10.5, DIP switch position S2 is
set to the “ON” position, according to the Division Factor Selection Chart.
To scale the CUB4 Voltmeter, the motor is run at full speed and a calibrated
photo tachometer is used to obtain the exact speed. The Scale Potentiometer on
the CUB4 Voltmeter is then adjusted until the display reading agrees with the
tachometer. Alternately, the output of a precision voltage source set to +10 VDC
can be connected to the signal input of the unit and then adjust the scaling
potentiometer for the desired reading.
TROUBLESHOOTING
For further technical assistance, contact technical support at the appropriate
company numbers listed.
Red Lion Controls
Red Lion Controls
Headquarters
20 Willow Springs Circle
York PA 17406
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
Red Lion Controls
Europe
Softwareweg 9
NL - 3821 BN Amersfoort
Tel +31 (0) 334 723 225
Fax +31 (0) 334 893 793
Red Lion Controls
India
201-B, 2nd Floor, Park Centra
Opp 32 Mile Stone, Sector-30
Gurgaon-122002 Haryana, India
Tel +91 984 487 0503
China
Unit 302, XinAn Plaza
Building 13, No.99 Tianzhou Road
ShangHai, P.R. China 200223
Tel +86 21 6113 3688
Fax +86 21 6113 3683
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
CUB4TC00
METER PANEL LCD THERMOCOUPLE
CUB5COM1
RS485 SERIAL COMMO CARD
CUB5IB00
DC METER RED/GREEN BKLT
CUB5PB00
PROCESS METER RED/GREEN BKLT
CUB5RTR0
RTD METER REFLECTIVE
CUB5TCB0
METER PANEL LCD THERMOCOUPLE RED
CUB5USB0
USB OPTION CARD
CUB5VR00
METER LCD DC VOLT 8DIGIT
相关代理商/技术参数
CUB4L000
功能描述:COUNTER, REFLECTIVE RoHS:是 类别:工业控制，仪表 >> 计数器 系列:* 其它有关文件:Declaration of Conformity 标准包装:1 系列:99766 计数速率:25Hz 数字/字母数:5 输入类型:机电式脉冲 输出类型:- 电源电压:24V 显示器类型:十进制拨轮
CUB4L010
功能描述:COUNTER W/YEL/GRN BKLTING RoHS:是 类别:工业控制，仪表 >> 计数器 系列:* 其它有关文件:Declaration of Conformity 标准包装:1 系列:99766 计数速率:25Hz 数字/字母数:5 输入类型:机电式脉冲 输出类型:- 电源电压:24V 显示器类型:十进制拨轮
CUB4L020
功能描述:COUNTER W/RED BKLTING RoHS:是 类别:工业控制，仪表 >> 计数器 系列:* 其它有关文件:Declaration of Conformity 标准包装:1 系列:99766 计数速率:25Hz 数字/字母数:5 输入类型:机电式脉冲 输出类型:- 电源电压:24V 显示器类型:十进制拨轮
CUB4L800
功能描述:8-DIGIT COUNTER, REFLECTIVE RoHS:是 类别:工业控制，仪表 >> 计数器 系列:* 其它有关文件:Declaration of Conformity 标准包装:1 系列:99766 计数速率:25Hz 数字/字母数:5 输入类型:机电式脉冲 输出类型:- 电源电压:24V 显示器类型:十进制拨轮
CUB4L80M
制造商:Red Lion Controls 功能描述:COUNTER, REFLECTIVE W/V+ TERM 8-DIGIT 制造商:Red Lion Controls 功能描述:8-DIGIT COUNTER REFLECTIVE W/V+
CUB4L810
制造商:Red Lion Controls 功能描述:COUNTER W/YEL/GRN BACKLIGHTING 8-DIGIT 制造商:Red Lion Controls 功能描述:8-DIGIT COUNTER W/YEL/GRN 制造商:Red Lion Controls 功能描述:CUB4L 8D GRN
CUB4L820
制造商:Red Lion Controls 功能描述:COUNTER W/RED BACKLIGHTING 8-DIGIT 制造商:Red Lion Controls 功能描述:8-DIGIT COUNTER W/RED
CUB4L8W0
功能描述:COUNTER 8 DIGIT LCD DISPLAY RoHS:是 类别:工业控制，仪表 >> 计数器 系列:CUB4 其它有关文件:Declaration of Conformity 标准包装:1 系列:99766 计数速率:25Hz 数字/字母数:5 输入类型:机电式脉冲 输出类型:- 电源电压:24V 显示器类型:十进制拨轮