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市场上通用型EMF的性能有较大差别，有些精度高、功能多，有些精度低、功能简单。精度高的仪表基本误差为（±0.5%～±1%）R，精度低的仪表则为（±1.5%～±2.5%）FS，两者价格相差1～2倍。因此测量精度要求不很高的场所（例如非贸易核算仅以控制为目的，只要求高可靠性和优良重复性的场所）选用高精度仪表在经济上是不合算的。
有些型号仪表声称有更高的精确度，基本误差仅（±0.2%～±0.3%）R，但有严格的安装要求和参比条件，例如环境温度20～22℃，前后直管段长度要求分别大10D和3D（通常为5D和2D），甚至提出流量传感器要与前后直管组成一体在流量标准装置上作实流校准，以减少夹装影响。因此在多种型号选择比较时不要单纯只看高指标，要详细阅读制造厂样本或说明书做综合分析。
市场上EMF的功能差别也很大，简单的就只是测量单向流量，只输出模拟信号带动后位仪表；多功能仪表有测双向流、量程切换、上下限流量报警、空管和电源切断报警、小信号切除、流量显示和总量计算、自动核对和故障自诊断、与上位机通信和运动组态等。有些型号仪表的串行数字通信功能可选多种通信接口和专用芯片（ASIC），以连接HART协议系统、PROFTBUS、Modbus、CONFIG、FF现场总线等。
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厦门仲鑫达自动化设备有限公司
欧阳英（销售经理）
移动电话：13394057292
电话：0592-5856292
传真：0592-5165561
邮箱：370848070@qq.com
Q Q ：370848070 , 2687338778
地址；厦门思明区湖滨东路湖光大厦8楼A单元
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所有备件的质保期均为1年，经过专业测试认证。
如果您需要订购产品超过1件，请与我们联系，我们可以为您提供折扣。
我们仅采用快递方式递送备件。（顺丰）
如果您发现其他供货商为相同产品提供更为低廉的价格，我们也愿意参照其价格向您提供进一步的折扣。如果还有其他任何问题，请随时与我们联系。
请让我们知道您有任何，备品，备件，的需要，我们可以给您进一步的援助，我们等候您的询盘。
Servo Dynamics SD2-1015-101-2 2-Axis Drive Controller 3300-0268 Rebuilt
GE Fanuc IC752WTC402C Display Station 2000 OIT Panel
GE Fanuc DisplayPAC-PPC/P4 Touch Screen?OIT Panel CLAA150XG01
GE Fanuc DisplayPAC-PPC Touch Screen OITPanel
Turck SE-84X-E924 Bus Stop Inter
Keyence LX2-11W Laser Micrometer CompactThrubeam Sensor
Keyence CZ-10 Fiberoptic Reflective RGB?Sensor
Red Lion GEM-20-000?Counter with Relay
Allen-Bradley 1771-IBN Series C Rev. F01?High True Input Module
RKC Instruments CB100FJA3-M*AR-N1 Digital Temperature Controller
Allen-Bradley 1771-IBN Series C Rev. F01?High True Input Module
Bosch PSS 5200.510C?Weld Timer Controller
Sato HG101512B Main?Logic Board PCB Rev?1.2 with HS RS-232C?Card
Festo DGO-5/8"-18"-PPV-A-B Linear Actuator Cylinder
Pinnacle MicroGuard?Auto Blank DR-20-AB1-AU Control Box
STM RLSM080-080-AP Dynamic
United Electric H100-702 95129 Pressure?Switch 3 to 100 psi
Mitutoyo 09AAA030A Signal Cable 3M AT100
Gulmay 15C-D011 Regulator / Gate Drive Controller Board 15C-C025
STM V62BP High Resolution Analog Sensor?
Turck Bi1.5-EH6.5-AP6X Inductive Prox Sensor 4612000
IVEK B01837 01838 A?01839 Control Board?B500025A 1159-004
Schrader Bellows RA071-1903F-AB21-A Rotary Actuator 150 PSI?
Bimba D-67835-A Pneumatic Cylinder 3/4"?Bore 25" Stroke
Seco Warner Electric?R1002 Remote Operator Station
Turck RSS RJ45S 841-1M Ethernet Cable Cordset U8626-1
GE Fanuc IC697MDL653D 24VDC 32PT Input Module 90-70 Series
Minarik RG100UB Speed Control 115VAC
Zaytran RAM-35-90 Pneumatic Rotary Actuator 400 PSI
Numatics Numatrol PB5-0005 Pneumatic Valve
Chatillon TCM200 Logic NC000720 Control?Board
Keyence FS-V1P Fiber?Optic Sensor Amplifier
GE Fanuc IC697BEM711G Bus Receiver Module 90-70 Series
Tol-o-matic PB17 SK10 RT0 Power Rod Cylinder Slide
National Instruments?181299-10 Coax Cable 1M 50 OHM CR7M 7 POSN
Brad Harrison 803P601 Multi-Port Cable
Allen-Bradley 800T-N251WGWG 24V Cluster?Pilot Light
(40) Acme Bushings .248" ID .408" OD 2500-H-26-22
Balluff BIS-C-440-U2-BIN ID System Processor
Extended Sys ExtendNet 100i ESI-2966A Print Server
Festo Plug Socket with Cable KMEB-1-230AC-5
Sola SCD30 S5-DN Heavy Duty Power Supply
Allen-Bradley 2755-CN25 25 ft High SpeedScan Cable
Robohand De-Sta-Co OTAL-002 13" Travel Linear Slide
Allen-Bradley 800MR-QT24AK Amber Pilot Light Switch
GE Fanuc 90-30 IC693MDL645B 16PT Pos/NegLogic Input Module
GE Fanuc 90-30 IC693MDL645D 16PT Pos/NegLogic Input Module
Bimba SR-090.5 Pneumatic Cylinder 1-1/16Bore x 1/2 Stroke
STI 43884-0010 Transient Voltage Suppressor 30VDC
Turck PKW 3M-P7X2-2S90 3-Wire Picofast Cordset
Bimba 010.5-D Pneumatic Cylinder 7/16 Bore x 1/2 Stroke
WESTINGHOUSE PC-700B NUMA-LOGIC SOLID STATE CONTROLS PROGRAMMABLE CONTROLLER
WESTINGHOUSE PC-700B CPU MODULE NUMA LOGIC PC-700B NUMA LOGIC w/ CARD MODULES
WARRANTY Westinghouse NL-772 NL-772H 120VAC Remote Unit I/O Module Numa-Logic
ly ListedWestinghouse Numa-Logic PC-1100-1011 CPU Programmable Controller PLC 120/220VAC
Numa-Logic PC1100
Westinghouse Numa Logic 254P950H01 Back Panel Board with NL-710 NL-731 NL-753
Westinghouse Numa-Logic PC-1200-1020 CPU Programmable Controller PLC 120/220V #2
ly ListedWestinghouse Numa-Logic PC-1200-1040 CPU Programmable Controller PLC 120/220VAC
ly ListedWestinghouse Numa-Logic PC-1200-1020 CPU Programmable Controller PLC 120/220VAC
NUMA LOGIC NL735 DC OUTPUT MODULE WESTINGHOUSE NL-735H
Westinghouse Numa Logic NL-771 Local Unit NL771
Westinghouse Numa Logic NL-772 Remote Unit NL772
Westinghouse NUMA-LOGIC 4 Channel Digital to Analog Converter Model NL-751A
NUMA LOGIC NL-708H 24VAC/DC INPUT MODULE WESTINGHOUSE
Westinghouse NL-044 NUMA Logic High Level Module Circuit Board
Westinghouse NL-044 NUMA Logic High Level Module Circuit Board
Westinghouse Numa Logic Solid State Control Local Unit NL 771 H
Westinghouse Mini Loader NLPL-789-1020 Numa-Logic
Westinghouse PC-110 Numa-Logic Programmable Controller PCE-111 Expander
WESTINGHOUSE NLPL-789 MINI LOADER NUMA-LOGIC (NO KEY) ***XLNT***
Westinghouse PC-110 numa-logic Programmable Controller
Westinghouse NL-015 NUMA Logic Part Loader Meter Module Circuit Board
Westinghouse NL-015 NUMA Logic Part Loader Meter Module Circuit Board
Westinghouse Programmable Controller Numa Logic PC-700B-20-304006
WESTINGHOUSE NUMA LOGIC (8) INPUT MODULES W/RAIL CAT.#S NL1005,NL1015,NL1020,
Westinghouse Numa Logic NL-1057 D/A Converter NL1057
Westinghouse Numa-Logic NLE-770 NLE770 Expander / Rmote
Westinghouse Numa Logic NL-1026 Source Output NL1026
Westinghouse Numa Logic Output Module Cat No. NL1026
Westinghouse Numa Logic NL-1017 Register Input NL1017
Westinghouse PC-110 Numa-Logic Programmable Controller
NIB .. Westinghouse 8 Channel A/D Converter P/N: NL-1050 NUMA-LOGIC ... MM-12
Westinghouse Numa Logic Output Module Cat No. NL1022
WESTINGHOUSE NUMA-LOGIC NLPL-180 PROGRAM LOADER (B102)
Westinghouse NUMA-LOGIC 8 Channel Analog to Digital Converter Model NL-742A
Westinghouse Numa Logic NL-1050 A/D Converter NL1050
Westinghouse Numa Logic NL-1076 Rack Bus Exp Mod NL1076
Westinghouse NL-350 NUMA LOGIC PC BOARD IS REPAIRED WITH A 30 DAY WARRANTY
Westinghouse NLR-704 Numa Logic Rack NLR704
Westinghouse Numa Logic Rack-Bus Expansion Module Cat No. NL1076
Westinghouse Numa Logic NL-1017 Register Input Module
Westinghouse Numa Logic NL-1018 Output Module
Westinghouse Numa Logic NL-724 Sink Output NL724
Westinghouse Numa-Logic NL-1022 8-Point Output Module 24VAC for PC-1100/1200 PLC
WESTINGHOUSE NUMA-LOGIC SOLID STATE CONTROL NL303
WESTINGHOUSE NUMA-LOGIC SOLID STATE CONTROL NL323
WESTINGHOUSE NUMA-LOGIC SOLID STATE CONTROL NL355
WESTINGHOUSE CRT PROGRAM LOADER NLPL 780 numa logic(S17-1)
Westinghouse 8 Channel A/D Converter P/N: NL-1050 NUMA-LOGIC ... WF-09E
Westinghouse Numa-Logic NLPL-180 Program Loader
WESTINGHOUSE NUMA-LOGIC NLPL-180 PROGRAM LOADER NLLA-185
Westinghouse Numa-Logic NL-342 28-2 2 Input AND Logic Module
WESTINGHOUSE NUMA-LOGIC NL1050 4-20 mA ANALOG TO DIGITAL CONVERTER
WESTINGHOUSE NUMA-LOGIC NL-739 RELAY OUTPUT MODULE
Westinghouse Numa-Logic NL040 Line Diverter/Master Circuit Board
WESTINGHOUSE NUMA LOGIC NLE-770
ly ListedLot 3 Westinghouse NLR-1008 8-Slot Numa-Logic Module Input/Output I/O Rack Rail
Westinghouse NUMA-LOGIC NLPL-180 Program Loader
Westinghouse Numa-Logic NL-1017 16Bit Register Input Module for PC-1100/1200 PLC
Westinghouse Numa Logic NL-720 4 Point Output NL720
Westinghouse Numa Logic NL-1003 Analog Input NL1003
Westinghouse Numa Logic Input/Output Rail NLR1008
WESTINGHOUSE NLRH-704P NUMA-LOGIC I/O RACK ()
Westinghouse Input Model: NL1005 NUMA-LOGIC MM-272
WESTINGHOUSE NUMA-LOGIC INPUT/OUT RAIL NLR-1008
Westinghouse Input Model: NL1005 NUMA-LOGIC 120VAC DC... WF-09B
Westinghouse Rack Bus Expansion Module: NL-1076 NUMA-LOGIC ... WF-09D
Westinghouse NL-710 120 VAC Input Module Numa-Logic
Westinghouse NL-772H 120VAC Output Module Numa-Logic (Missing Front Cover)
WESTINGHOUSE NUMA LOGIC NLE-770 PLC Controller
Westinghouse Numa Logic Rack NLR-704 NLR704
