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参数资料
| 型号： | QM140V |
| 厂商： | Martel Electronics |
| 文件页数： | 2/2页 |
| 文件大小： | 0K |
| 描述： | LCD UNIVERSAL VOLT AMMETER |
| 产品目录绘图： | QM Series QM Series Rear View QM Series Side View |
| 标准包装： | 1 |
| 系列： | 快速安装 |
| 类型： | 伏特表 |
| 测量范围： | 200mV |
| 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： | 1.71" L x 0.84" W（43.5 x 21.4mm） |
| 显示器位数： | 3.5 |
| 显示器位数 - 高度： | 0.500"（12.70mm） |
| 背光： | 无 |
| 安装类型： | 面板安装 |
| 端子： | 导线引线 |
| 电源电压： | 7.5 ~ 15VDC |
| 产品目录页面： | 2862 (CN2011-ZH PDF) |
| 其它名称： | 227-1046 |
LASCAR ELECTRONICS LTD.
MODULE HOUSE, WHITEPARISH,
WILTSHIRE. SP5 2SJ UK
LASCAR ELECTRONICS INC.
PO BOX 50727, PALO ALTO,
CA 94303-0727 USA
TEL: ++44 (1794) 884567 F AX: ++44 (1794) 884616
TEL: ++1 (650) 838 9027
FAX: ++1 (650) 833 5432
WIRE CONNECTIONS (EMV 1125) and SCREW TERMINAL FUNCTIONS (T.BLK-4)
0.
1.
Black (BK)
Brown (BR)
V-
COM
Negative power supply connection.
The ground for the analogue section of the A/D converter, held actively at 2.8V (nom.) below V+.
COM must not be allowed to sink excessive current (>100 μ A) by connecting it directly to a higher voltage.
2.
Red (RD) V+
Positive power supply connection.
3.
4.
5.
6.
7.
8.
9.
Orange (OR) Vref Connection for calibration circuit (see diagram below).
Yellow (YL) IN HI Positive measuring differential input. IN HI and IN LO must be no closer than 1V to either the positive or negative supply.
Green (GN) IN LO Negative measuring differential input. (On T/BLK-4, IN LO is connected to COM via normally-closed Link L2.)
Blue (BL) DP COM Common connection for decimal points DP1, DP2 and DP3, see below.
Violet (VI) DP1 199.9
Grey (GY) DP2 19.99 Connect to DP COM to display required decimal point.
White (WT) DP3 1.999 (or make appropriate solder link on T/BLK-4)
SCALING and CALIBRATION
A calibration circuit and two resistors (Ra and Rb) may be added on the
EMV 1125 or T/BLK-4 board (cut Link La if fitting Ra) to alter the full
Connecting to T/BLK-4
Solder wires from EMV 1125
scale reading of the meter - see table. Note that the meter will have to
be (re-)calibrated by adjusting the potentiometer.
1
1 2 3
La
Required F.S.R.
200mV
2V
20V
200 μ A
Ra
N/A
910k
1M
0R
Rb
N/A
100k
10k
1k
CAL
Adjust
Adjust
Adjust
Adjust
Calibration
potentiometer
BK BR RD OR YL GN BL VI GY WT
L1
DP
CAL L2
V- V+
Rb Ra
Decimal point
links
2mA
20mA
0R
0R
100R
10R
Adjust
Ad just
200mA
0R
1R
Adjust
Scaling resistors (values for 2V and 20V FSD Supplied with T/BLK-4)
Adding an input filter and scaling resistors when T/BLK-4 is not used
Adding a calibration circuit when T/BLK-4 is not used
V+
+
Ra
100k
IN HI
(Yellow/4)
100k
(Red/2)
-
INPUT Rb
100nF
IN LO
(Green/5)
Note: To reduce noise on the meter's input, fit the input filter components (1M
Note: The calibration circuit must always
be fitted, even when scaling resistors are
not fitted. This circuit is fitted as standard
3k
1k5
R CAL
Vref
(Orange/3)
COM
and 10nF) shown above. The input filter is fitted as standard on T/BLK-4.
on T/BLK-4.
(Brown/1)
APPLICATIONS
Do not connect more than one meter to the same power supply if the meters cannot use the same signal ground. Taking any input beyond the power supply rails
will damage the meter. Keep leads short to ensure noise-free operation.
1 2 3
DP
1 2 3
DP
1 2 3
DP
1
BK BR RD OR YLGN BL VI GY WT
L1
CAL L2
1
BK BR RD OR YLGN BL VI GY WT
L1
CAL L2
1
BK BR RD OR YL GN BL VI GY WT
L1
CAL L2
V- V+
Rb
Ra
La
V- V+
Rb
Ra
La
V- V+
Rb
Ra
La
Rb = 0.2
I Full Scale
10k
510k
Supply
Voltage
+200mV
Input Voltage
Supply
Voltage
Current to be
measured
510k
Supply
Voltage
Measuring a floating voltage
source of 200mV full scale.
Add Ra and Rb and cut Link La to
increase the measurement range.
Measuring current.
Recalibrate the module.
The current to be measured must be
isolated from the module's power supply.
Measuring a supply voltage.
(min. 7.5V, max. 15V)
Cut Links La and L2.
Recalibrate the module.
Specifications liable to change without prior warning
EMV 1125
Issue 3
January/2001
M.C.
Applies to EMV 1125/2
相关PDF资料 |
PDF描述 |
|---|---|
| QM150V-02 | LCD UNIVERSAL VOLT AMMETER |
| QPD-100-24 | POWER SUPPLY ENCLOSED 24V 4.5A |
| QPD-15-24 | POWER SUPPLY ENCLOSED 24V 0.7A |
| QPD-150-5 | POWER SUPPLY ENCLOSED 5V 26A |
| QPD-25-12 | POWER SUPPLY ENCLOSED 12V 2.1A |
相关代理商/技术参数 |
参数描述 |
|---|---|
| QM-14-CF | 制造商:HRS 制造商全称:HRS 功能描述:QM (1.78mm-070) CONNECTORS |
| QM-14-CFI | 制造商:HRS 制造商全称:HRS 功能描述:QM (1.78mm-070) CONNECTORS |
| QM-14-CS | 制造商:HRS 制造商全称:HRS 功能描述:QM (1.78mm-070) CONNECTORS |
| QM-14-CS(50) | 制造商:Hirose 功能描述: |
| QM-14-CV | 制造商:Hirose 功能描述: |
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