测量、测量误差、直接测量和间接测量。
什么是测量误差?
答:测量值与真实值之间的差值,叫测量误差.
什么是直接测量和间接测量?
答:直接测量是指被测参数直接以一定的标准量比较出来。间接测量是将直接测量到的数据代入一定的公式,计算出所要求的被测参数值。
什么是测量?
答:是将被测参数信号形式进行转换和传送,并将其与相应测量单位进行比较的过程,叫测量。
仪表误差、变差、灵敏度和灵敏限。
什么是仪表的允许误差,仪表的精度及精度等级?
答:允许误差指仪表在规定的正常情况下允许的百分比误差的最大值。仪表的精度指允许误差去掉百分号(%)后的值。精度等级是国家统一规定,划分的一系列标准百分比的值。2、什么是仪表的变差?
答:指在外界条件不变的情况下,使用同一仪表对某一参数进行正反行程测量时,二者之间的差值。
什么是仪表的灵敏度和灵敏限?
答:灵敏度是用来表达测量仪表对被测参数变化的灵敏程度。灵敏度由仪表测量指示值的变化量和引起此变化的被测参数的变化量之比表示。
灵敏限是指引起仪表指示值发生可见变化的被测参数的最小变化量。
什么是测量系统的动态误差?
答:是指测量系统中被测参数信息处于变动状态下仪表指示值与被测参数实际值之间的差异。
Motorola MVME 147S-1 MVME147S-1 VME Mainframe Board
Dynamation Inc. Dyna 8 Oven Dyna 8-28
Bassi Eagletronic SR2400 24V 100A Battery Charger NEW
Perkin-Elmer LS30 Luminescence Spectrophotometer
ADC Kentrox Magnum 100 Multiplexer Chassis w/ 5 Cards
Bancomm / Symmetricom PC26V VME LED Display PCB
Semitool P228-4E SRD Spin Rinser Dryer Controller SRD
Datel / Murata DVME-601 A/D Co-Processor Board
Moore Business Equipment MN: 431 Free Standing Imprintr
Systems Integration + 12-Slot VME Enclosure Chassis
Themis TSVME-400-2A 48-Optocoupler Isolate Digital Inpu
K-D Mfg. Co. Tools Co. Universal Analyzer II Model 2214
JVC BR-S610U S-VHS VIDEO CASSETTE RECORDER
Omega Vanzetti OH-2F Lead Sulfide Optic Detector
Haake L Circulating Water Bath w/ L3 Temp Controller
Clay Adams CAT#: 0151 6-Tube Physician’s Centrifuge
Fujitsu FC9607HSN2 High-Speed Switch Unit FLM 2400 ADM
Dantel 46029-02 CPM Control Point Module A11-4602-02
Ohaus 6010 Moisture Determination Laboratory Balance
Plast-O-Matic PR050V-TF Ultra-Pure Pressure Regulator
GEMU 1436 Intelligent Digital Elec-Pneumatic Positioner
Omron STI Mini/FlexSafe MS4300B-2 Safety Light Curtain
Hill-Rom 45679 ZoneAire Bed Surface Control Module
APPLETON CODE MASTER 2 EXPLOSION PROOF 250W LAMP LIGHT
Panasonic CF-28 Shock Resistant Wireless ToughBook
Stratagene 1800 Stratalinker UV Crosslinker DNA RNA
Daedal, Inc. MC 2000 Controller MC2101-20-CL MC2000
Yaskawa SGDA-04AS Servopak AC Servo Drive BRAND NEW!!
VMIC VMIVME-2511 VMEbus PROCESSOR MAINFRAME BOARD
UMAX PowerLook 2100XL 12”x17” One Size Fits All Scanner
SmartDisk 4 Bays VST FireRAID FWRAIDTWR Storage Cabinet
Kikusui 60 MHz 3-Channel Oscilloscope COS5060
MKS Instruments 127A Baratron Pressure Transducer
Honeywell DCP 510 Series Digital Control Programmer
PMI Kollmorgen S6M4H ServoDisc Servo Disc DC Motor
Furon UPBM-F1216-P
InFocus Systems PanelBook 550 LCD Projection Panel
Cirris Signature 5000 512 Point Testing Box Analyzer
QUARTET OVONICS QO3100 ELECTRONIC COPYBOARD QO 3100-4
MKS Instruments 260PS-3 Type 260 PS Power Supply
Sencore VA62 Universal Video Analyzer
IEC Clinical Centrifuge Model CL w/ Rotor 213
Micro Memory Inc. MM-6326 Dual-Port VME Board
Sony BKM-2053-01 D-65 SMTPE Auto Setup Probe
Dantel 46033-01 E-Sys Adapter A11-46033-01
Fluoroware Dymak 8PC-16F-01 Pneumatic Pinch Valve
Klockner Moeller N9-250-CNA N9-250 Motor Switch 600VAC
Norcal ESVP-3002-ISO Pneumatic Actuated Angle Valve NEW
Dantel 46020-00 MAP Multi-Alarm Processor A11-46020-00
Kodak Digital SP700 Color Printer Model SP700U
Hach Company 2100A Laboratory Turbidimeter