收藏本站
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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
DMS-30PC-4/20S-24GS-I-C DPM LED 24V SUPPLY 3.5DIG GREEN
DMS-40LCD-0/1-5-C DPM LCD 200MV/2VDC 4.5DIGIT
DMS-40LCD-4/20S-C METER LCD SELF-POWERED 4.5DIG
DMS-40PC-1-RL-BCD-C DPM LED 2VDC 4.5DIG BCD LP RED
DMS-40PC-4/20S-24RS-I-C METER DISP LED 4.5DIG 24V RED
DMU-30ACV-1-DR-C VOLT METER LED 200ACV 0.1V RED
DMU-30DCV-2-DR-C VOLT METER LED 20DCV 0.01V RED
DN-91648U PATCH PANEL 19" 48PORT RJ45 CAT6
相关代理商/技术参数
DMS-30PC-1-RL 功能描述:数字面板表 3.5 Digit +-2V Input Low Power 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-1-RL-C 功能描述:数字面板表 3.5 Digit +-2V Input Low Power 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-1-RS 功能描述:数字面板表 3.5 Digit +-2V Input 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-1-RS-C 功能描述:数字面板表 3.5 Digit +-2V Input 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
DMS30PC-1-RS-C 制造商:Murata Power Solutions 功能描述:Std red LED digital voltmeter,2V 14mm
DMS-30PC-1-VFS 功能描述:数字面板表 3.5 Digit +-2V Input 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-1-VFS-C 功能描述:数字面板表 3.5 Digit +-2V Input 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-1-YS 功能描述:数字面板表 3.5 Digit +-2V Input 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