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| 型号： | DMS-30PC-2-RL-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 4/6页 |
| 文件大小： | 0K |
| 描述： | DPM LED MINI 20VDC 3.5DIG LP RED |
| 产品目录绘图： | Digital Panel Meter |
| 3D 型号： | DMS-30PC Series.pdf DMS-30PC Series.sldprt DMS-30PC Series.stp DMS-30PC Series.igs |
| 标准包装： | 12 |
| 系列： | DMS-30PC |
| 类型： | 伏特表 |
| 测量范围： | ±20V |
| 显示器样式： | 红色字符，黑色背景 |
| 显示器类型： | LED |
| 显示器正面尺寸： | 2.09" L x 0.84" W（53.1 x 21.3mm） |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.560"（14.22mm） |
| 背光： | 无 |
| 安装类型： | 面板安装 |
| 端子： | PC 引脚 |
| 电源电压： | 4.75 ~ 5.25V |
| 产品目录页面： | 2855 (CN2011-ZH PDF) |
| 其它名称： | 811-1024 |
DMS-30PC Series
3? Digit, LED Display Low-Power,
APPLICATIONS
2. Differential Input Con?gurations: Differential measurements can
be made with all DMS-30PC meters. Figure 3, though not a practical
real-world application, uses a voltage divider to demonstrate the
concept of a differential input signal. Be careful not to exceed the ±2V
common mode voltage limitation for 5V-powered meters.
Miniature Digital Panel Voltmeters
pin 10 (ANALOG COMMON) or pin 3 (5V RETURN) 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
meter's power supply. In the ?gures below, the 1.5V battery illustrates
a true ?oating inpu t.
REF OUT 8
REF IN 7
DP1 6
DMS-30PC-1
11
(+) IN HI
12
(–) IN LO
R1
1k
R2
1k
1.5V
CELL
–
11
(+) IN HI
12
(–) IN LO
DMS-30PC-1
8
REF OUT
7
1
+5V SUP
3
5V RET
R3
1k
1
3
6
REF IN
85-264Vac
AC to DC Converter
85-264Vac
AC to DC Converter
+5V SUP
5V RET
DP1
Figure 3. Differential Input Con?guration
Figure 5. Floating Input Measurements
3. Engineering Scaling : For measuring voltages greater than the full
scale input range of a given meter, the input signal must be attenu-
ated. 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
11
(+) IN HI
10
DMS-30PC-1
8
REF OUT
should be precision, ±1%, metal-?lm resistors with absolute TCR's
less than 50ppm/°C. See Ap Note 4 for more information on engineer-
ing scaling.
50k Ω < R1 + R2 < 10M Ω
1.5V
CELL
–
ANA COMM
12
(–) IN LO
1
+5V SUP
3
5V RET
6
DP1
7
REF IN
R2
R1 + R2
x V IN = Reading
85-264Vac
AC to DC Converter
V IN
R1
11
(+) IN HI
DMS-30PC-1
8
REF OUT
Figure 6. Floating Input Measurements
(Alternate Con?guration)
R2
12
–
(–) 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-30PC meters have such high
input impedance, a simple shunt resistor across the meter's input can
be used to convert the loop current to a voltage. See Figure 7. The
85-264Vac
AC to DC Converter
Figure 4. Input Attenuation Circuit
value of the shunt resistor is a function of the scaling requirements of
the particular application and can be calculated using the following
equation:
R Shunt = R1 = V Fsr / I Fsr
4. Floating Signal Source Measurements : Floating signals can be
measured using the circuits shown in Figures 5 and 6. Connecting
www.murata-ps.com/dpm
Where:
V Fsr = Full scale reading (in Volts)
I Fsr = Relative full scale current (in Amps)
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS_30PC.F05 Page 4 of 6
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-30PC-2-RS | 功能描述:数字面板表 3.5 Digit +-20VInput Std Red 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-30PC-2-RS-C | 功能描述:数字面板表 3.5 Digit +-20VInput Std Red 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-30PC-2-VFS | 功能描述:数字面板表 3.5 Digit +-20VInput Blue-Green 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-30PC-2-VFS-C | 功能描述:数字面板表 3.5 Digit +-20VInput Blue-Green 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-30PC-2-YS | 功能描述:数字面板表 3.5 Digit +-20VInput Std Yellow 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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