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參數資料
| 型號： | DMS-EB-RMS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | AC-to-RMS Converter Application Board for DMS-30PC/LCD Meters |
| 中文描述： | 交流到有效值轉換器應用局DMS-30PC/LCD儀表 |
| 文件頁數： | 1/1頁 |
| 文件大小： | 153K |
| 代理商： | DMS-EB-RMS |
Features
Displays true rms values of ac inputs
±0.5% accuracy for DMS-30PC-0
or DMS-30LCD-0-5
±2% accuracy for DMS-30PC-1
or DMS-30LCD-1-5
Also works with DMS-40PC/LCD meters
(see Ap Note 11)
AC-to-RMS Converter
Application Board for
DMS-30PC/LCD Meters
DMS-EB-RMS
Ordering Information
DMS-EB-RMS
AC-to-RMS conversion
board
Bezel assembly
Bezel assembly with
sealing gasket
DMS-BZL1
DMS-BZL2
Functional Specifications
(T
A
= +25°C, V
CC
= +5V)
Vac Measurement Range:
±200mV meters
±2V meters
0 to 199.9Vac
0 to 750Vac
Conversion Accuracy:
0-200Vac
0-750Vac
±0.5%
±2%
Crest Factors
3, maximum
Input Frequency Range
40Hz to 2kHz
Primary Operating Power
+5V (±5%)
Current Consumption (Board only)
+0.5mA typ., +1mA max.
Operating Temperature Range
0 to +60°C
Storage Temperature Range
–20 to +75°C
Humidity
0 to 95%, non-condensing
Dimensions
2.02" (51.31mm)W x 0.83" (21.08mm)H
Figure 1. DMS-EB-RMS Schematic Diagram
Actual Size
DS-0398A 1/98
Technical Notes
Description:
The DMS-EB-RMS board allows the true rms value of ac signals to be displayed
on 5V-powered DMS-30PC/LCD digital voltmeters. The meter/board combination has an input
range of 0-750Vac with ±2V meters (1Vac resolution) or 0-199.9Vac with ±200mV meters
(0.1Vac resolution). A built-in screw-terminal block reliably interfaces signal and power
connections. The DMS-EB-RMS now accommodates user-installed modifications such as
input-scaling resistors and isolated +5V dc/dc converters.
Power and Safety Precautions:
The DMS-EB-RMS’s AC HI and AC LOW inputs are not
electrically isolated from its 5V supply (AC LOW is connected directly to 5V RETURN).
When measuring any input signal which is derived from ac power mains, a dedicated (i.e.,
it only powers the DMS-EB-RMS), transformer-isolated +5V supply, with a minimum 1kV
breakdown rating,
must
be
used
to power the DMS-EB-RMS board/meter combination.
When measuring ac power mains inputs, never connect the DMS-EB-RMS’s 5V RETURN
to chassis/earth ground anywhere in the system. Failing to follow these instructions could
defeat any safety grounding and will place the system +5V power supply, and all its
associated circuitry, at dangerously elevated ac-line potentials. In many applications, the
DMS-EB-RMS installation is required to meet
electrical code requirements.
To ensure
safe operation, the DMS-EB-RMS board
should only be installed and serviced by
technically-qualified personnel
. See DMS
Application Note 11 for more details.
(
–
) INPUT LO
(+) INPUT HI
REF. OUT
REF. IN
1
5
6
5V Return
3
+5V
TB1
CAV
OUT
+V
S
COM
–
V
S
CF
V
IN
CC
V
OUT
LV
OSC
V+
CAP
–
GND
CAP+
BOOST
SG1
SG2
SG3
5V RETURN
DP3
DP2
DP1
+5V SUPPLY
C5
2.2μF
+
+
R1
988k
R2
988k
R3
1.98k
+
C2
10μF
C1 100μF
1
2
3
4
5
6
7
8
5
6
7
8
1
2
3
4
U1
U2
AC HI
3
4
5
6
1
2
SG4
J1
12
11
8
7
10
9
JP1
J6
GND 2
1
3
U3
PS1
1
2
3
4
C4
2.2μF
J4
J5
AC LOW
Components are user-supplied
and not part of the standard product.
DC/DC
–
V
+V
+V
IN
–
V
OUT
V
IN
V
OUT
DATEL, Inc.
, Mansfield, MA 02048 (USA)
Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356
Email: sales@datel.com
Internet: www.datel.com
DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained
herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.
Purchase on-line at www.datel.com
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DMS-EB-RMS-C | 功能描述:數字面板表 AC-to-RMS conversion board RoHS:否 制造商:Murata Power Solutions 設備類型:AC Voltmeters 顯示器類型:LED, 3 Digit, Red 工作電源電壓:85 VAC to 264 VAC 工作電源電流:50 mArms 輸入電流:50 mA 輸入頻率: 輸入電壓:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-TCJ | 功能描述:數字面板表 Type J Thermocouple input board RoHS:否 制造商:Murata Power Solutions 設備類型:AC Voltmeters 顯示器類型:LED, 3 Digit, Red 工作電源電壓:85 VAC to 264 VAC 工作電源電流:50 mArms 輸入電流:50 mA 輸入頻率: 輸入電壓:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-TCJ-C | 功能描述:數字面板表 Type J Thermocouple input board RoHS:否 制造商:Murata Power Solutions 設備類型:AC Voltmeters 顯示器類型:LED, 3 Digit, Red 工作電源電壓:85 VAC to 264 VAC 工作電源電流:50 mArms 輸入電流:50 mA 輸入頻率: 輸入電壓:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-TCK | 功能描述:數字面板表 Type K Thermocouple input board RoHS:否 制造商:Murata Power Solutions 設備類型:AC Voltmeters 顯示器類型:LED, 3 Digit, Red 工作電源電壓:85 VAC to 264 VAC 工作電源電流:50 mArms 輸入電流:50 mA 輸入頻率: 輸入電壓:120 VAC 系列:DMS-20PC-1-LM |
| DMS-EB-TCK-C | 功能描述:數字面板表 Type K Thermocouple input board RoHS:否 制造商:Murata Power Solutions 設備類型:AC Voltmeters 顯示器類型:LED, 3 Digit, Red 工作電源電壓:85 VAC to 264 VAC 工作電源電流:50 mArms 輸入電流:50 mA 輸入頻率: 輸入電壓:120 VAC 系列:DMS-20PC-1-LM |
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