参数资料
型号: PAXLSG00
厂商: Red Lion Controls
文件页数: 5/8页
文件大小: 0K
描述: METER STRAIN GAGE 3 1/2-DIGIT
标准包装: 1
系列: PAX®LITE
类型: 应力测量仪,毫伏表
测量范围: ±2V
显示器样式: 红色字符,黑色背景
显示器类型: LED
显示器正面尺寸: 3.80" L x 1.95" W(96.5 x 49.5mm)
显示器位数: 3.5
显示器位数 - 高度: 0.560"(14.22mm)
安装类型: 面板安装
端子: 端接块
电源电压: 85 ~ 250VAC
其它名称: RLC114
3.0 W IRING
THE
M ETER
WIRING OVERVIEW
Electrical connections are made via screw-clamp terminals located on the
back of the meter. All conductors should conform to the meter ’s voltage and
current ratings. All cabling should conform to appropriate standards of good
installation, local codes and regulations. It is recommended that power supplied
to the meter (AC) be protected by a fuse or circuit breaker.
When wiring the meter, compare the numbers embossed on the back of the
meter case against those shown in wiring drawings for proper wire position. Strip
the wire, leaving approximately 0.3" (7.5 mm) bare lead exposed (stranded wires
should be tinned with solder). Insert the lead under the correct screw-clamp
terminal and tighten until the wire is secure. (Pull wire to verify tightness.)
EMC INSTALLATION GUIDELINES
Although this meter is designed with a high degree of immunity to Electro-
Magnetic Interference (EMI), proper installation and wiring methods must be
followed to ensure compatibility in each application. The type of the electrical
noise, its source or the method of coupling into the unit may be different for
various installations. Listed below are some EMC guidelines for successful
installation in an industrial environment.
1. The meter should be mounted in a metal enclosure, which is properly
connected to protective earth.
2. Never run Signal or Control cables in the same conduit or raceway with AC
power lines, conductors feeding motors, solenoids, SCR controls, and
heaters, etc. The cables should be run in metal conduit that is properly
grounded. This is especially useful in applications where cable runs are long
3.1 POWER WIRING
and portable two-way radios are used in close proximity or if the installation
is near a commercial radio transmitter.
3. Signal or Control cables within an enclosure should be routed as far away as
possible from contactors, control relays, transformers, and other noisy
components.
4. In extremely high EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Signal
and Control cables as close to the unit as possible. Loop the cable through the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure. The
following EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for signal and control cables:
Fair-Rite # 0443167251 (RLC #FCOR0000)
TDK # ZCAT3035-1330A
Steward #28B2029-0A0
Line Filters for input power cables:
Schaffner # FN2010-1/07 (RLC #LFIL0000)
Schaffner # FN670-1.8/07
Corcom #1VR3
Note: Reference manufacturer ’s instructions when installing a line filter.
5. Long cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.
6. Switching of inductive loads produces high EMI. Use of snubbers across
inductive loads suppresses EMI.
Snubber: RLC#SNUB0000.
AC Power
Terminal 1: VAC
Excitation Power
Terminal 3: Common
Terminal 2: VAC
1
2
Terminal 4: Excitation +
3
4
85-250 VAC
-EXC.
BRIDGE
+EXC.
5 VDC @ 60 mA max, ±2%
10 VDC @ 120 mA max, ±2%
3.2 INPUT SIGNAL WIRING
2-Wire Single Ended Input
4-Wire Bridge Input
6-Wire Bridge Input
3
4
5
6
3
4
5
6
3 4
5
6
+
-
+EXC.
+SEN
+EXC.
+SIG.
-SIG.
+SIG.
-SIG.
-SEN
-EXC.
DEADLOAD COMPENSATION
In some cases, the combined deadload and liveload output may exceed the
range of the input. To use this range, the output of the bridge can be offset a
small amount by applying a fixed resistor across one arm of the bridge. This
shifts the electrical output of the bridge downward to within the operating range
of the meter. A 100 K ohm fixed resistor shifts the bridge output approximately
-10 mV (350 ohm bridge, 10 V excitation).
Connect the resistor between +SIG and -SIG. Use a metal film resistor with
a low temperature coefficient of resistance.
5
-EXC.
BRIDGE COMPLETION RESISTORS
For single strain gage applications, bridge completion resistors must be
employed externally to the meter. Only use metal film resistors with a low
temperature coefficient of resistance.
Load cells and pressure transducers are normally implemented as full
resistance bridges and do not require bridge completion resistors.
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