产品介绍
马克罗传感器 推出的CD375系列是3/8英寸（9.5毫米）直径、交流供电的小型非接触式线性位移传感器，既能满足OEM客户的应用，也能满足终端用户的要求。可选量程从±0.025英寸（±0.63毫米）至±2.0英寸（±50毫米），铁芯-内孔径向间隙比竞争对手同类产品大50%（0.012英寸/0.3毫米）、轻质的铁芯使这些微型的LVDT非常适用于高响应的动力计量。CD375系列传感器具有分辨率高、重复性好、阻抗低、灵敏度高、线性好等LVDT 技术特征。任何这种传感器的最大线性误差都不超过满量程输出的±0.25%最佳直线法。
CD 375 系列LVDT的可靠性，是 马克罗传感器 在多年生产LVDT过程中不断改进和优化生产工艺和装配技术的直接成果。它们对环境的高适应性归功于材料的结构，如充玻璃的线圈使温度性能稳定，不锈钢外壳形成磁屏蔽，减少外部交流磁场的影响。密封等级达到IEC标准IP-61级。
马克罗传感器 提供几种可选标准，用户可以定制CD 375 LVDT，包括特氟纶铁芯衬垫和公制螺纹铁芯。除了这些标准的选择，马克罗传感器 还可以设计和生产各种特殊的CD 375 LVDT，包括不同出线方式、接头、在加压液体中工作的产品及高温环境中工作的产品、抗原子辐射结构等。不管您有什么特殊的要求，请与我们联系。
所有CD 375系列LVDT都可与任何传统的不同输入的LVDT信号处理器相配。但不推荐与比率输入的LVDT信号处理器连用。马克罗传感器 可提供各种LVDT信号处理器与CD 375系列LVDT达成优化配置。详见9000系列技术说明。
特点
3/8英寸微小直径，轻质铁芯
量程 ±0.025英寸~±2.0英寸
非线性优于 ±0.25% FRO
使用温度220°F（105°C）
线圈密封等级：IEC IP-61
导磁不锈钢外壳
应用领域
机床及工具定位
机械手定位
医疗设备
阀门位置感应
自动柜员机
气缸位置
油/气井监测
自动检测设备
供电 | 3.0 Vrms（额定） |
输入频率 | 2.5至3.0千赫 |
线性误差（满量程输出） | <±0.25% of FRO |
重复误差 | <0.01% of FSO |
磁滞误差 | <0.01% of FSO |
使用温度 | -55℃至+105℃ |
灵敏度温度系数 | -0.02％/℃（额定） |
耐振极限 | 196米/秒，2千赫 |
抗冲击能力 | 980米/秒，11毫秒
|
CD 375 Series
Miniature LVDT Position Sensors
Technical Bulletin 1012
Description
Macro Sensors’ CD 375 Series of 3/8 inch (9.5 mm) diameter AC-operated LVDTs are small size contactless linear position sensors for both OEM and end user applications. They are available in full scale measuring ranges from
±0.025 inch (±0.63 mm) to ±1.0 inch (±25mm). The low mass of their cores makes these miniature LVDTs well suited for high response dynamic measurements. CD 375 Series sensors feature the high resolution, excellent repeatability, and low hysteresis associated with LVDT technology, as well as the highest sensitivity consistent with good linearity. The maximum linearity error for a CD 375 sensor is ±0.25% of full range output, using a statistically best-fit straight line derived by the least squares method.
The proven reliability of CD 375 Series LVDTs is a direct result of manufacturing processes and assembly techniques developed and optimized by Macro Sensors personnel over many years of making LVDTs. Their environmental robustness stems from the materials of their construction, such as glass-filled polymer coil forms for thermal stability and stainless steel housings that act as magnetic shields to reduce the effects of any
Features
Miniature 3/8 inch size, low core mass
Ranges of ±0.025 inch to ±1.0 inches
Non-linearity less than ±0.25% of FRO
220°F (105°C) operating temperature
Coil assembly sealed to IEC IP-61
Magnetically shielded SS housing
Typical Applications
Machine Tools
Robotic Grippers
Medical Equipment
Valve Position Sensing
ATMs and Copy Machines
Pneumatic Cylinder Position
Oil and Gas Well Monitoring
Automatic Inspection Equipment
external AC magnetic fields. Their external sealing meets IEC standard IP-61.
Macro Sensors offers several standard options that permit a user to customize CD 375 LVDTs, including Teflon® bore liners and metric threaded cores. In addition to these standard options, Macro Sensors can design and produce special CD 375 LVDTs, including units with different lead wire exit points and connectors; vented units for operation in pressurized fluids; units for higher ambient temperatures; and units constructed of materials resistant to mild nuclear radiation. Contact the highly experienced Applications Engineers at Macro Sensors for help with any special requirements.
All CD 375 Series LVDTs will operate properly with any conventional differential input LVDT signal conditioners, but operation with ratiometric LVDT signal conditioning circuits is not recommended. Macro Sensors offers a full line of LVDT signal conditioners that will deliver optimum performance from any CD 375 Series LVDT.
CD 375 SeriesTechnical Bulletin 1012
General Specifications
Input Voltage:3.0 Vrms (nominal)
Input Frequency:2.5 - 3.0 kHz
Linearity Error:<±0.25% of FRO
6 #32 AWG TEFLON INSULATED LEADS
12 INCHES [300] LONG
A
0.375
[9.5]
Repeatability Error:<0.01% of FSO N
Hysteresis Error:<0.01% of FSO
Operating Temperature:-65°F to +220°F
(-55°C to +105°C)
Thermal Coefficient-0.01%/°F (nominal)
of Sensitivity:(-0.02%/°C nominal)
RED
0.134 [3.4]1
0.125 [3.18]2
#1-72 UNF-2B STANDARD M2 x 0.4, 6H METRIC
0.25 [6.4] MIN. DEPTH
YELLOW
SEC 1
Vibration Tolerance:20 g to 2 kHz
PRIMARYBLUE
CONNECT BLUE AND GREEN FOR DIFFERENTIAL OUTPUT
Shock Survival:1000 g, 11 ms
BROWN
SEC 2
BLACK
1 CD 375-025 through CD 375-250
Specifications
WIRING DIAGRAM
2 CDM 375-500 and CDM 375-1000
All dimensions in inches [mm]
Model | CD 375 025 | CD 375 -050 | CD 375 -100 | CD 375 -250 | CDM 375 -500 | CDM 375 -1000 |
Parameter ▼ |
|
|
|
|
|
|
Nominal Range (inches) | ±0.025 | ±0.050 | ±0.100 | ±0.250 | ±0.500 | ±1.00 |
Nominal Range (mm) | ±0.63 | ±1.25 | ±2.50 | ±6.25 | ±12.5 | ±25 |
Sensitivity (mV/V/.001 in) | 3.3 | 1.6 | 1.6 | 2.2 | 1.6 | 0.7 |
Sensitivity (mV/V/mm) | 130 | 63 | 63 | 87 | 63 | 28 |
Impedance, Primary (Ω) | 90 | 340 | 340 | 500 | 125 | 235 |
Dimension “A” (inches) | 0.50 | 0.75 | 1.00 | 1.75 | 3.30 | 5.60 |
Dimension “A” (mm) | 12.7 | 19.1 | 25.4 | 44.5 | 83.8 | 142.2 |
Dimension “B” (inches) | 0.40 | 0.63 | 0.64 | 1.13 | 2.00 | 3.00 |
Dimension “B” (mm) | 10.2 | 16.0 | 16.3 | 28.6 | 50.8 | 76.2 |
Dimension “N” (inches) | 0.25 | 0.38 | 0.50 | 0.88 | 1.65 | 2.8 |
Dimension “N” (mm) | 6.35 | 9.5 | 12.7 | 22.1 | 41.9 | 71.1 |
Weight, Body (ounces) | 0.10 | 0.20 | 0.21 | 0.40 | 0.63 | 0.95 |
Weight, Body (grams) | 2.8 | 5.7 | 6.0 | 11.3 | 18.0 | 27.0 |
Weight, Core (ounces) | 0.008 | 0.014 | 0.015 | 0.033 | 0.056 | 0.088 |
Weight, Core (grams) | 0.23 | 0.40 | 0.42 | 0.94 | 1.60 | 2.50 |
Ordering Information
For standard CD 375 or CDM 375, order by model number with range For metric threaded core option, add -006 after model number with range For Teflon® bore liner option, add -010 after model number with range
(not available for CDM 375-500 or CDM 375-1000) For both options, add -016 after model number with range
For accessories and compatible support electronics, please visit our website at www.macrosensors.com.
TM
Division Of Howard A. Schaevitz Technologies, Inc.
7300 US Route 130 North, Bldg. 22 Pennsauken, NJ 08110-1541 USA tel: 856-662-8000
fax: 856-317-1005
lvdts@macrosensors.com
