雷达式液位计根据脉冲 - 回波方式工作，其工作天线向被测对象发射出波长较短的微波脉冲，一部分微波穿过了被测介质，另外一部分在被测物料的表面产生反射后，由发射器接收，也就是说，发射器同时还起着接收器的作用。发射天线到物料表面的距离正比于微波脉冲的运行时间：D= C.t/2 式中：D为发射天线与物料间的距离；C为光速；t为运行时间。
发射与反射波束中的每一点都采用超声采样方法来采集，经信号处理后得到介质与发射天线之间的距离，但这种测量原理不适合于近距离的测量。
ALLEN BRADLEY 600V 30A 3 POLE TRAILER FUSE BLOCK 1494V-FSR633 SER A
SICK 30-MGS LIGHT CURTAIN MGSS120-12
SCOTT SPEED-EVAC MOUTHBIT RESPIRATOR 90-AG
FUSI ELECTRIC CIRCUIT PROTECTOR CP32FM/3
SALISBURY ELECRTICAL RUBBER GLOVES SZ 91/2 BLUE ANSI/ASTM D120 TYPE II
HS 32 STAINLESS CLAMP W CARB SCREW QUANITY 19
SMC NVFS2200-5FZ SOLENOID VALVE DC21-26V
SALISBURY ELECTRICAL GLOVES SZ 81/2 RED ANSI/ASTM D120 TYPE I
MSA COMBINATION RESPIRATOR CARTRIDGE 491627
OHMITE D25K150 25 WATTS
ALLEN BRADLEY DISCONNECT SWITCH HANDLE
GENERAL ELECTRIC 30AMP 600V.AC MAX HP 20 HEAVY DUTY SWITCH N.P. 266209-G
CONTROL DEVICES 5A708, SEALED
YALE EMERGENCY BRAKE CABLE 901985804
KEYENCE SAFETY CURTAIN MUTING STATUS DISPLAY PANEL MOUNT SL-R12D
PASS & SEYMOUR RDC-115032 NEMA L6-20 20A-250V BROWN RECEPTACLE
SMC PORT LOCK OUT VALVE VHS40-03
SICK LIGHT CURTAIN MGSE120-12A
MSA FACESHIELD VISOR 472299
DBI/SALA 11FT SELF REACTING SAFETY HARNESS L3020 105158
DBI SALA 6FT EX STOP II TIE OFF ADAPTOR L967-6C
ALLEN BRADLEY DISCONNECT SWITCH 1494V-DS60 SERIES D
ALLEN BRADLEY ILLUMINATED PUSH BUTTON 800T-PA16 SERIES T
UNITED ELECTRIC PRESSURE SWITCH 3-30PSI 15 AMP 125/250VAC TYPE J54 MODEL 24
RAM METER 600V 50-400HZ 300:5 A RATIO CURRENT TRANSFORMER CAT 58 RBL-301
BRADY SIGNMARK DANGER SIGN 70249 105164
IFM EFECTOR100 IGS206 SWITCH IGB3008BAPKG/M/US/104-DPO
SICK 30-FGS SAFETY LIGHT CURTAIN SET FGSE 300-23 / FGSS 300-23
FUSI ELECTRIC CIRCUIT PROTECTOR CP32FM/5
ERIE MANUFACTURING CO. PORT-O-MATIC EMERGENCY OXYGEN 407A42
PATLITE CORPORATION 24V .6W PATLITE ALARM UNIT EB-24KA
TELEMECANIQUE 220V 7W BEACON STACK LIGHT, XVAC341,
STI MiniSafe LONG RANGE MS4400 LIGHT CURTAIN EMITTER 42682-0240 / MS4424BX
THOMAS AND BETTS 600VAC 30A FUSIBLE HEAVY DUTY SAFETY SWITCH HD361-TB
PINNACLE MICROGUARD LIGHT CURTAIN RECEIVER MC-36-OF-AU
TOL-O-MATIC RKBC3#239864 & TOL-O-MATIC 34159019 REPAIR KIT
LITTELFUSE 600V 30A LPSJ30-3 CLASS J FUSEHOLDER
MSA DEFENDER AND FACESHIELD FRAME 488126
PEPPERL+FUCHS INTRINSICALLY SAFE BARRIER KHZ-922/EX-1 P/N 92732
POWER ONE 160V 24VD AT 3.6AMPS HN24-3.6-A POWER SUPPLY
STI MICRO SAFE TRANSMITTER MO47SR-20-900-X
ALLEN BRADLEY 24VAC/VDC 7W STEADY LED STACK LIGHT, 855T-B24TL7 SER. C
TELEMECANIQUE GREEN SAFETY STACK LIGHT XVB C33 / 084506
SIEMENS SYSTEMS 3 SUPPLEMENTARY RELAY MODULE SR-32
ALLEN BRADLEY DISCONNECT SWITCH HANDLES
NUMATICS 153SS615M000061 SOLENOID VALVE 24VDC 150PSIG-AIR
SCC 24VDC LED-STACK LIGHT,
SUNX SAFETY LIGHT CURTAIN RECEIVER SF2-EH56D DEMAGE ON LENS
SICK 30-MGS 52" SAFETY LIGHT CURTAIN 30-MGSE120-12B
TELEMACANIQUE ELECTRIC RED LIGHT
TELEMECANIQUE SCHNEIDER ELECTRIC GREEN SIGNAL LIGHT XVB C33
EDWARDS 120V 30A 60HZ ADAPTABEACON SIGNAL LAMP ASSEMBLY 52A-N5-40W
SQUARE D HEAVY DUTY SAFETY SWITCH 60A 600VDC H362AWK W/ RECEPTACLE JFC6
ALLEN BRADLEY 24VC AMBER SRACK LIGHT 855E-24GL5 SERIES A
SALISBURY ELECRTICAL RUBBER GLOVES SZ 101/2 BLUE ANSI/ASTM D120 TYPE II
SALISBURY ELECRTICAL RUBBER GLOVES SZ 81/2 BLUE ANSI/ASTM D120 TYPE II
GE FLEX-A-PLUG 60A 600VAC 3P DEL-362
THE PROTECTOSEAL CO. VACUUM RELIEF VENT C19542PF3/0069
EDWARDS ADAPTABEACON SIGNALING APPLIANCE 120V 60Hz 0.1A 92R-N5
ROBERTSHAW CONTROL PANEL BOARD N100-781046 N
ENCON 503Q PROTECTIVE GOGGLE HIGH IMPACT CHEMICAL SPLASH GOGGLE 500 SERIES
DBI SALA FULL BODY HARNESS 1103875
RTC SAFETY HARNESS 2008-RETRACTOR LIFELINE
TORK TURN-LOCK MOUNTING DELAYED RESPONSE PHOTOCONTROL 105-130V 50/60HZ 5001M
FEDERAL SIGNAL FB2PST FIREBALL II LIGHT,
SIEMENS 60A 600V NEMA 3R HEAVY DUTY SAFETY SWITCH HF362J
ALLEN BRADLEY 110/115-120VAC COIL AC RELAY 700-P400A1 SER. D
FLOYD BELL 40-120 VAC BELL AUDIO ALARM MW-09-201-0-Q
PILZ SAFETY RELAY PILZ 16374
CHROMALOX HEATING ELEMENT MT0-105
SMC AR30K-03 REGULATOR W PANEL MOUNT AR30P-270AS
CHEMETRONICS 100 WATT 24 VOLT POWER SUPPLY SN 7-022-0126
SMC SOLENOID VALVE NVFR4200 15-130PSI
MILLTRONICS MSP-12 MOTION SENSING PROBE 51012361
SELLSTROM SAFETY GLASSES Z87
FEDERAL SIGNAL CORP. 1.90A 120VAC/DC EXPLOSION-PROOF SIREN AX SER-B1
NOSHOK 0-600 PSI PRESSURE GAUGE
STI MINISAFE MS4300 SERIES CURTAIN EMITTER / RECEIVER SET MS4316BX / MS4316BR
TELEMACANIQUE XVB C35 STACK LIGHT LENS
DWYER INSTRUMENTS PRESSURE SWITCH 1638-O 104574
TRI LITE BLUE LIGHT MV110UL
NOSHOK 0-300PSI PRESSURE GAUGE
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