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参数资料
| 型号： | DMS-20LCD-1-5B-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 4/6页 |
| 文件大小： | 0K |
| 描述： | DPM LCD 2VDC 3.5DIGIT W/BACKLITE |
| 产品目录绘图： | Digital Panel Meter |
| 3D 型号： | DMS-20LCD Series.pdf DMS-20LCD Series.sldprt DMS-20LCD Series.stp DMS-20LCD Series.igs |
| 标准包装： | 12 |
| 系列： | DMS-20LCD |
| 类型： | 伏特表 |
| 测量范围： | ±2V |
| 显示器样式： | 黑色字符，白色背景 |
| 显示器类型： | LCD |
| 显示器正面尺寸： | 1.30" L x 0.80" W（33.0 x 20.3mm） |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.370"（9.40mm） |
| 背光： | 白 |
| 安装类型： | 面板安装 |
| 端子： | PC 引脚 |
| 电源电压： | 5V |
| 产品目录页面： | 2855 (CN2011-ZH PDF) |
| 其它名称： | 811-1016 |
DMS-20LCD Series
3? Digit, LCD Display Digital Panel Voltmeters
APPLICATIONS
2. Differential Input Con?gurations: Differential measurements can be
made with either 5V-powered or 9V-powered meters. Figure 3, though
not a practical real-world application, uses a voltage divider to demon-
strate the concept of a differential input signal. Be careful not to exceed
the ±2V common mode voltage limitation for 5V powered meters.
4. Floating Signal Source Measurements: Floating signals can be
measured using the circuits shown in Figures 5 and 6. Figure 5 uses
a 5V-powered meter. Figure 6 uses a 9V-powered meter. Connecting
pin 10 (ANALOG COMMON) to (–) INPUT LO (pin 12) provides the
reference point for the meter’s input.
A “?oating” input is a signal that has no galvanic connection to the
REF OUT
8
DMS-20LCD-1-5
11
(+) IN HI
R1
1k
meter’s power supply. In the ?gures below, the 1.5V battery illustrates a
true ?oating input.
REF IN 7
DP1 6
12
(–) IN LO
R2
1k
11
(+) IN HI
DMS-20LCD-1-5
8
REF OUT
1
+5V SUP
3
5V RET
R3
1k
1.5V
CELL
–
12
7
(–) IN LO
REF IN
120 VAC
1
+5V SUP
3
5V RET
6
DP1
AC to DC Converter
Figure 3. Differential Input Con?guration
120 VAC
(5V-Powered Models)
AC to DC Converter
3. Engineering Scaling: For measuring voltages greater than the full
scale input range of a given meter, the input signal must be attenuated.
A simple voltage divider (similar to that shown in Figure 4) will scale
the input to within the range of the selected meter. R1 and R2 should
be precision, ±1%, metal-?lm resistors with absolute TCR’s less than
Figure 5. Floating Input Measurements
(5V-Powered Models)
50ppm/°C. See Ap Note 4 for more information on engineering scaling.
50k : < R1 + R2 < 10M :
1.5V
11
(+) IN HI
10
ANA COMM
DMS-20LCD-1-9
8
REF OUT
R2
x V IN = Reading
CELL
–
12
7
R1 + R2
(–) IN LO
REF IN
1
+ BAT
9V
BATTERY
3
–BAT
6
DP1
R1
11
(+) IN HI
DMS-20LCD-1-5
8
–
V IN
R2
12
REF OUT
Figure 6. Floating Input Measurements
(9V-Powered Models)
–
(–) IN LO
1
+5V SUP
3
5V RET
7
REF IN
5. Process Control (4-to-20mA) Measurements: In many common
process-control applications, a 4-to-20mA current loop is used to
transmit information. Because DMS-20LCD meters have such high
input impedance, a simple shunt resistor across the meter’s input can
120 VAC
AC to DC Converter
Figure 4. Input Attenuation Circuit
be used to convert the loop current to a voltage. See Figure 7. The
value of the shunt resistor is a function of the scaling requirements of
the particular application and can be calculated using the following
equation:
www.murata-ps.com/dpm
05 Apr 2011
email: sales@murata-ps.com
MPM_DMS20LCD.B08 Page 4 of 6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-20LCD-1-5-C | 功能描述:数字面板表 3.5D 5V 2V LCD RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS20LCD19 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:3 1/2 Digit, LCD Display Low-Cost, Subminiature Digital Panel Voltmeters |
| DMS-20LCD-1-9 | 功能描述:数字面板表 9V LED +/- 2V RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-20LCD-1-9B | 功能描述:数字面板表 +-2 Volts/+9V Backlit Model RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
| DMS-20LCD-1-9B-C | 功能描述:数字面板表 +-2 Volts/+9V Backlit Model RoHS:否 制造商:Murata Power Solutions 设备类型:AC Voltmeters 显示器类型:LED, 3 Digit, Red 工作电源电压:85 VAC to 264 VAC 工作电源电流:50 mArms 输入电流:50 mA 输入频率: 输入电压:120 VAC 系列:DMS-20PC-1-LM |
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