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参数资料
| 型号： | DMS-40LCD-4/20S-C |
| 厂商： | Murata Power Solutions Inc |
| 文件页数： | 1/5页 |
| 文件大小： | 0K |
| 描述： | METER LCD SELF-POWERED 4.5DIG |
| 产品目录绘图： | Digital Panel Meter |
| 标准包装： | 12 |
| 系列： | DMS-40LCD-4/20S |
| 类型： | 过程多用表（4-20mA 回路） |
| 测量范围： | 4-20mA 回路 |
| 显示器样式： | 黑色字符，灰色背景 |
| 显示器类型： | LCD |
| 显示器正面尺寸： | 2.09" L x 0.84" W（53.1 x 21.3mm） |
| 显示器位数： | 4.5 |
| 显示器位数 - 高度： | 0.402"（10.20mm） |
| 背光： | 无 |
| 安装类型： | 面板安装 |
| 端子： | 端接块 |
| 其它名称： | 811-1079 |
DMS-40LCD-4/20S Series
Ultra-Low 2.9V Loop-Drop 4? Digit
LCD Display Process Monitor
FEATURES
Loop-powered, no power supply required!
2.9V typical loop-drop; 190-Ohm (max.) loop
impedance
Dip-switch-selectable range, offset, and
decimal points
Hundreds of different input/readout combinations
Non-interacting gain (span) and offset (zero)
20-turn potentiometers
Large, 0.40" (10.0mm) high, sunlight-viewable
LCD digits
Miniature size: 2.17" x 0.92" x 0.90" (55mm x
23mm x 23mm)
Vibration-resistant package; reliable screw-
terminal connections
100% soldered connections
The DMS-40LCD-4/20S’s ultra-low 2.9V typical loop-drop (190-Ohm burden) makes it
ideal for use in 4-20mA process monitoring applications which have two or more series-
connected loop-monitoring devices. The low loop-burden means it can be used in current
loops that are powered from supply voltages as low as +8Vdc! The DMS-40LCD-4/20S is
self-powered; all required operating power is derived directly from the current loop itself.
It requires no separate dc power supply or special grounding considerations and can be
connected ANYWHERE in the loop!
The DMS-40LCD-4/20S's input, span, and offset circuits all employ super-stable,
±0.5% thin-?lm chip resistors. Long-term stability and accuracy are assured by driving
these tight-tolerance resistors with an ultra-stable, ±0.2% band-gap voltage reference.
Unlike many competitor’s designs, the two precision 20-turn span and zero adjust poten-
tiometers do not interact with one another. Its full-size, 0.40" (10.0mm) high-contrast 4?
digit LCD display offers 19,999 counts of resolution and can be read in virtually any lighting
condition—including full sunlight!
All range-change and decimal point selections are made by con?guring two gold-plat-
ed, vibration-resistant, six-position DIP switches. The two connections to the current loop
are made via a reliable, screw-type terminal block. To further enhance reliability, the design
features 100% soldered connections—no troublesome zebra/elastomercic connectors are
used. All these outstanding features make the DMS-40LCD-4/20S the highest quality, most
rugged, 4? digit, LCD-display process monitor available.
4? DIGIT A/D
CONVERTER
Range
Offset
Gain
DATA
R3
R7
DP1
DP2
DP3
DP4
ZERO
ADJUST
GAIN
ADJUST
BAND-GAP
REFERENCE
CIRCUIT
S1
ON
S2
ON
1
2
3
4
5
6
1
2
3
4
5
6
+5V
–5V
TB1
DC/DC
CONVERTER
CURRENT TO
VOLTAGE
CONVERTER
1
+
–
2
+
–
4-20mA
For full details go to
www.murata-ps.com/rohs
Figure 1. DMS-40LCD-4/20S Simpli?ed Schematic
Current Loop Input
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MPM_DMS401LCD-420S.D02 Page 1 of 5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DMS-40PC | 制造商:MURATA-PS 制造商全称:Murata Power Solutions Inc. 功能描述:4? Digit, LED Display Digital Panel Voltmeters |
| DMS-40PC-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:4 1/2Digit, LED Display Precision, Miniature Digital Panel Voltmeters |
| DMS-40PC-1-GS | 功能描述:数字面板表 4.5 Digit +-2V Input Std 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-40PC-1-GS-C | 功能描述:数字面板表 4.5 Digit +-2V Input Std 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-40PC-1-RH | 功能描述:数字面板表 4.5 Digit +-2V Input Hi-Intense 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 |
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