|
|
PDF DCA5-20PCS Data sheet ( Hoja de datos )
| Número de pieza | DCA5-20PCS | |
| Descripción | 50mV & 100mV input / LED display / subminiature DC Ammeters | |
| Fabricantes | Datel | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DCA5-20PCS (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
®®
w.DataSheet4U.com DCALE5D-52D0i0mspVPla&yC,D1SC0uS0bAmmemVinmrIiiaenettpueusrrets,Order online at www.datel.com
wwFeatures
m• Scales and displays the output of 5A to 2000A,
50mV & 100mV shunts
o• Completely self-contained – no additional
components required
.c• Wide power supply inputs: 5 to 40Vdc for
12V/24V/28V applications
U• 48V option for telecom supplies
• Isolated-supply models for high-side shunts
t4• Large, easy-to-read LED display with 0.37”
(9.4mm) high digits
e• Available in red, blue or green LED displays
• Subminiature 1.38” x 0.88” package with
escrew-style terminal blocks
h• Factory calibrated to ±0.1% accuracy;
Reverse-polarity protection
S• Over 50 models available
ta• Digital upgrade for analog meters
DATEL’s new DCA5-20PC Series dc ammeters are specifically designed to display
the output of all popular 50mV and 100mV dc-shunts. 25 input ranges provide for
precision measurement of dc currents from 1.000A to 2000A. With the exception of
an external shunt, the unit is 100% self-contained – no calibration or user-supplied
components are required. Available LED-display colors include brilliant blue, bright green,
and standard red. Three power supply options accommodate all popular dc-supply
voltages from 5V to 75Vdc, making these ammeters perfect for automotive, industrial,
telecom, and marine applications!
DCA5-20PC Series ammeters are housed in 1.38” x 0.88” (35mm x 22mm) rugged
packages that feature a large, 0.37”/9.4mm high, LED display. However, display visibility
is not compromised in any way: the display can be easily read at distances up to 15
feet (5 meters). All input and power supply connections are made by way of two screw-
style terminal blocks. For added flexibility, computer-style jumpers are provided for range-
specific decimal point assignments. And, to ensure trouble free installation, all models
include reverse-polarity protected power supply inputs.
Two input configurations are offered: grounded shunt (“low-side”), 5-40V-powered,
red LED models for cost-sensitive applications, and 8-36V isolated-supply models that
accept high-side or floating shunts. Isolated-supply models are available in a choice
of red, green, or blue LEDs. Since many dc ammeters are used in battery backup
applications, power consumption for 8-36V models is typically 1 Watt, and 75mW for
5-40V models.
Miniature size, wide supply inputs, and no-hassles installation make DCA5-20PC
Series ammeters the ideal choice for all your 50 and 100mV shunt ammeter-applications.
.DaLED DISPLAY
wwINPUT
w om*AMPLIFIER
+
–
CAL
A/D
CONVERTER
+5V
–5V
POWER
CONVERTER
U.c**
et41
She–IN
.DataEXTERNAL
www50 or 100mV SHUNT
2
TB1
+IN
SIGNAL
GROUND
Not included on all models
*** Open on isolated power models
Figure 1. DCA5-20PC Series Simplified Schematic
POWER
GROUND
12
12
TB2
+V –V (GND)
+–
EXTERNAL DC SUPPLY
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • E–mail: [email protected] • Internet: www.datel.com
1 page  
DCA5-20PC Series
5 0 M V a n d 1 0 0 M V I N P U T, L E D D I S P L AY, D C A M M E T E R S
8. Operation With 100mV Shunts: Many DCA5-20PC Series ammeters
can also operate with 100mV shunts. This is due to the fact that
when they are driven by a 100mV input, the display readings are
double those of a 50mV input. However, a 50mV shunt cannot be used
in a 100mV application because its maximum current rating will be
exceeded.
For our customer’s convenience, DATEL offers a series of 50mV and
100mV chassis-mount dc shunts that can be used with DCA5-20PC
ammeters. Part numbers for accessory shunts can be found in the
Ordering Information section. A data sheet describing these shunts is
available at www.datel.com.
Table 1 indicates the obtainable readings of the seven DCA5-20PC
models that can be operated with 100mV shunts. Be sure to enable the
correct decimal point (see decimal point selection instructions).
9. Noisy Power Supplies: Some power supplies contain high-frequency
switching devices that may conduct and/or radiate significant noise
onto the low-level 50/100mV shunt signal. Even though the DCA5-
20PC incorporates built-in filtering at its shunt input, some portion of
this noise may be amplified and subsequently measured by the DCA5-
20PC’s sensitive circuitry. The amplified noise introduces errors that
are particularly noticeable at zero load current (i.e., the ammeter may
not display a relatively steady “000” reading).
Connecting an external, unpolarized capacitor across TB1’s “+” and
“–” inputs, and/or across the shunt’s 50mV output terminals, can help
reduce noise-related display errors. In certain situations, the use of
twisted pair or shield wiring may be required. As a general rule, avoid
using excessively long leads between the ammeter and the shunt.
Model
DCA5-20PC-1
DCA5-20PC-2
DCA5-20PC-3
DCA5-20PC-4
DCA5-20PC-7
DCA5-20PC-8
DCA5-20PC-9
Table 1. 100mV Shunt Readings *
100mV Shunt Readings
10.00A/100.0A/1000A
1.999A/19.99A/199.9A/1999A
60.0A/600A
150.0A/1500A
50.0A/500A
800A
1200A
* With respective decimal point enabled
Panel Installation
All connections and modifications must be made after the ammeter is
securely attached to the panel, with all load and supply voltages de-
energized (off).
The installed wire-positions should be such that minimal forces are applied to
TB1, TB2, and the ammeter itself. In high-vibration environments, the use of
wiring strain-reliefs is recommended.
To insure a secure panel-mount installation, DATEL recommends using the
DMS-BZL4 (with sealing gasket) bezel assembly supplied with each ammeter.
Step 1.
Step 2.
See the Mechanical Specifications section for detailed panel cutout and
ammeter dimensions.
Following the four-step sequence shown in Figure 7 below, being careful
not to apply excessive force or twisting motions, insert the ammeter into the
panel opening. When using the DMS-BZL4’s sealing gasket, make sure it
is positioned between the ammeter’s flange and the panel’s front surface.
Be sure to use and securely tighten all four screws supplied with the bezel
assembly.
Step 3.
Step 4.
PANEL
1
PANEL
PANEL
3
PANEL
BEZEL
2
4
Figure 7. Panel Installation
GASKET
(optional)
DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • E–mail: [email protected] • Internet: www.datel.com
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet DCA5-20PCS.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DCA5-20PCS | 50mV & 100mV input / LED display / subminiature DC Ammeters | Datel |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |