IC693ACC302
當(dāng)CPU處理前臺(tái)任務(wù)時(shí)，USB的傳輸可在后臺(tái)進(jìn)行；后臺(tái)中斷服務(wù)程序和前臺(tái)主程序循環(huán)之間的數(shù)據(jù)交換可以通過(guò)事件標(biāo)志和數(shù)據(jù)緩沖區(qū)來(lái)實(shí)現(xiàn)。當(dāng)PDIUSBD12從USB收到一個(gè)數(shù)據(jù)包，即對(duì)CPU產(chǎn)生一個(gè)中斷請(qǐng)求，CPU立刻響應(yīng)中斷。在中斷服務(wù)程序中，固件將數(shù)據(jù)包從PDIUSBD12內(nèi)部緩沖區(qū)移到循環(huán)數(shù)據(jù)緩沖區(qū)，并將PDIUSBD12的內(nèi)部緩沖區(qū)清零，以便接收新的數(shù)據(jù)包，使CPU可

IC693ACC302IC693ACC302

當(dāng)CPU處理前臺(tái)任務(wù)時(shí)，USB的傳輸可在后臺(tái)進(jìn)行；后臺(tái)中斷服務(wù)程序和前臺(tái)主程序循環(huán)之間的數(shù)據(jù)交換可以通過(guò)事件標(biāo)志和數(shù)據(jù)緩沖區(qū)來(lái)實(shí)現(xiàn)。當(dāng)PDIUSBD12從USB收到一個(gè)數(shù)據(jù)包，即對(duì)CPU產(chǎn)生一個(gè)中斷請(qǐng)求，CPU立刻響應(yīng)中斷。在中斷服務(wù)程序中，固件將數(shù)據(jù)包從PDIUSBD12內(nèi)部緩沖區(qū)移到循環(huán)數(shù)據(jù)緩沖區(qū)，并將PDIUSBD12的內(nèi)部緩沖區(qū)清零，以便接收新的數(shù)據(jù)包，使CPU可以繼續(xù)執(zhí)行當(dāng)前的前臺(tái)任務(wù)直到完成。本文利用PDIUSBD12的端點(diǎn)1進(jìn)行命令的傳輸和應(yīng)答，端點(diǎn)1每次接收計(jì)算機(jī)發(fā)送過(guò)來(lái)的8 B指令，其指令格式如表2所示。例如，接收到十六進(jìn)制碼52 01 00 03 00 07 00 50，表示讀24C01器件從03字節(jié)開始的7個(gè)字節(jié)的數(shù)據(jù)。52H為R的ASCII碼，57H為W的ASCII碼。端點(diǎn)2用于數(shù)據(jù)的傳輸。

PLC的發(fā)展趨勢(shì)
    隨著PLC應(yīng)用領(lǐng)域日益擴(kuò)大，PLC技術(shù)及其產(chǎn)品結(jié)構(gòu)都在不斷改進(jìn)，功能日益強(qiáng)大，性價(jià)比越來(lái)越高。

    （1）、在產(chǎn)品規(guī)模方面，向兩極發(fā)展。一方面，大力發(fā)展速度更快、性價(jià)比更高的小型和超小型PLC。以適應(yīng)單機(jī)及小型自動(dòng)控制的需要。另一方面，向高速度、大容量、技術(shù)完善的大型PLC方向發(fā)展。隨著復(fù)雜系統(tǒng)控制的要求越來(lái)越高和微處理器與計(jì)算機(jī)技術(shù)的不斷發(fā)展，人們對(duì)PLC的信息處理速度要求也越來(lái)越高，要求用戶存儲(chǔ)器容量也越來(lái)越大。
    （2）、向通信網(wǎng)絡(luò)化發(fā)展
    PLC網(wǎng)絡(luò)控制是當(dāng)前控制系統(tǒng)和PLC技術(shù)發(fā)展的潮流。PLC與PLC之間的聯(lián)網(wǎng)通信、PLC與上位計(jì)算機(jī)的聯(lián)網(wǎng)通信已得到廣泛應(yīng)用。目前，PLC制造商都在發(fā)展自己的通信模塊和通信軟件以加強(qiáng)PLC的聯(lián)網(wǎng)能力。各PLC制造商之間也在協(xié)商通用的通信標(biāo)準(zhǔn)，以構(gòu)成更大的網(wǎng)絡(luò)系統(tǒng)。PLC已成為集散控制系統(tǒng)（DCS）*的組成部分。
  

鄭娟萍

廈門仲鑫航自動(dòng)化設(shè)備有限公司  

 （3）、向模塊化、智能化發(fā)展
    為滿足工業(yè)自動(dòng)化各種控制系統(tǒng)的需要，近年來(lái)，PLC廠家先后開發(fā)了不少新器件和模塊，如智能I/O模塊、溫度控制模塊和專門用于檢測(cè)PLC外部故障的智能模塊等，這些模塊的開發(fā)和應(yīng)用不僅增強(qiáng)了功能，擴(kuò)展了PLC的應(yīng)用范圍，還提高了系統(tǒng)的可靠性。
    （4）、編程語(yǔ)言和編程工具的多樣化和標(biāo)準(zhǔn)化
    多種編程語(yǔ)言的并存、互補(bǔ)與發(fā)展是PLC軟件進(jìn)步的一種趨勢(shì)。 PLC廠家在使硬件及編程工具換代頻繁、豐富多樣、功能提高的同時(shí)，日益向MAP(制造自動(dòng)化協(xié)議)靠攏，使PLC的基本部件，包括輸入輸出模塊、通信協(xié)議、編程語(yǔ)言和編程工具等方面的技術(shù)規(guī)范化和標(biāo)準(zhǔn)化。

O.C. Keckley Type #7 Float Valve, Globe or Angel Pattern.  3/4".  New Old Stock 

Excelon (Norgren) Model: F74G-4AN-QP3 3/4" PTF Filter.  Unused. 

Norgren Model: B64G-NAK-AD-RMN Filter / Regulator   

Norgren Model: F74H-4AN-QDO Oil Filter Removal   

Norgren Model: T1000C2800 VALVE, FLOW CONTROL *W2

Dwyer Cat. No. 1950 - 0 - 2F Explosion-Proof Differential Pressure Switch   W

Entegris  Model: CP4FN-1 Flaretek Tube with Cap and Nut.  ?" OD.  New Old Stock 

Ashcroft Model: 250-3074 Guage.  New Old Stock.  No Box  

Entegris  Model: CP16FN-1 Flaretek Tube Cap with Nut:  1" OD.  New Old Stock   

Ashcroft Test Guage.  0 - 300 PSI. No Model Number  

Entegris  Model: CP12FN-1 Flaretek Tube with Cap and Nut. ?" OD.  New Old Stock 

Entegris  Model: CP6FN-1 Flaretek Tube with Cap & Nut.  3/8" OD.  New Old Stock 

Ashcroft Type 1008 316 SS Guage, 1/4" NPT, 63mm  

Fluoroware:  PM12FN-1.  ?" OD Straight Union.  PFA w/ PVDF Nut.   New Old Stock 

Fluoroware:  UT16-16TFN-1 Tee.  1" OD.   PFA w/ PVDF Nut.   New Old Stock 

Fluoroware Model: SU12FN-1.  1" Straight Union.  New Old Stock 

Lot of United Electric: J54S-24 9711 Pressure Switch,3 

Air Monitor Corporation V/I Converter Module.  PWB: 20754510.  Rev. A   

Air Monitor Corporation System Control Module w/ Automated Logic R683 PCBA   

Air Monitor Corporation System 4 Channel Transmitter Module   

Cito Product Model: OT-1202 Oil Temperature Control   

Marsh:  J2440 General Service Gauge.  2.0 STB-B, 1/8M, 0/15 PSI.  New Old Stock 

Fluoroware Model: E12-8FN-1 Elbow.   3/4" Elbow.   New Old Stock  

Fluoroware Model: UE8FN-1 Elbow.   ?" OD   New Old Stock  

Fluoroware Model: C6-8FN-1 Straight Adapter, MNPT.    ?" OD   New Old Stock  

Fluoroware Model: FC4-4FN-1 Straight Adapter, FNPT.    ?"   OD   New Old Stock  

Fluoroware Model: C12-12N   Adapter. ?" OD Tube ?"  X   ?"MNPT   New Old Stock  

Plast-O-Matic: GGMUV100-PFCS  Ultra-Pure Gauge Guard.   Unused Old Stock.   

Conrac Instruments: 24158, C-50-20  Accelerometer.  +/-50G,  2000Ω, .010A.   

Conrac Instruments: 24155, G-50-50 Accelerometer.  +/-50G,  5000Ω, .010A  

Conrac Instruments: 24158, 0-50-50 Accelerometer.  +/-50G,  5000Ω, .010A  

Giannini Controls: 24158, C-50-20 Accelerometer.  +/-50G, 2000Ω, .010A. New Old 

Giannini Controls: 24155, G-15-20 Accelerometer.  +/-15G,  2000Ω, .010A  

Giannini Controls: 24158, C-10-20 Accelerometer.  +10G,  2000Ω, .010A. New Old 

Fluoroware / Galetk / Entegris Mdl: C16-16FN-1 Straight Adapter  New Old Stock J

MARSH J7654P 63MM SEVB 1/4 NPT 0-200PSI KPA GAUGE.  New Old Stock  

Genisco Model: GMA 2389-88 Accelerometer.  Range: 0 + 10G   

Genisco Model: GMA 2389-26 Accelerometer.  Range: +/- 50G   

Genisco Model: GMA 89-65  Accelerometer.  Range: -5 + 15G   

Genisco Model: GMA 89-71  Accelerometer.  Range: -5  +400G   

Sporlan Model: XP0-3 Rapid Cycle Solenoid Valve 7/8"  K

Ashcroft: 35-1009AW-02L-1000# General Service Guage.  New Old Stock 

Dumont Model: PSF 100A Pressure Sensor   

 Marshalltown Instruments Model: G23868 Press. Gauge.  New Old Stock  

Weiss Instruments: 9VU35 INDUSTRIAL GLASS THERMOMETER.  New Old Stock  *W2

Tescom Model:  389-1449* Repair Kit for 44-11XXX-XX-XXX.   New Old Stock  

Barksdale / IMO Model: 402T3-15CG-04-J  Pressure Switch.  5000 PSIG  

Lot of Anarak Model: SS-100-HC NC Air Operated Valves  

Virginia Chemicals Model: TDE-2F Dry - Eye Indicator  

Bristol Babcock 506008-037  Pressure Switch.  New Old Stock  

Dwyer 3000 Series, Model: 3025 Photohelic Guage  

Hydrocraft: HC1V-002S Liquid Filled Guage.  -30 in Hg to +30 PSI.  New Old Stk  

Tescom: VAC6VV9A9B9-008  Pressure Valve. 15000 Max. In. 125 PS Actuation Press 

GSE: 051134-00501 Reaction Torque Transducer.  500LBS.  2.0 NOM. 700 OHM Bridge 

Genuine York Swivel Elbow 90 Degree Fitting, P/N: 023-16240-000.  New Old Stock 

Tescom: VAC6VV9E9F9-008 Pressure Valve. 15000 Max. In. 125 PS Actuation Press 

Unit Instruments Model: UFC-1050A  MFC.  500 SCCM.  Gas: H2.  Sealed Stock   J

Unit Instruments: UFC-1200A  MFC.  200 SCCM.  Gas: 15% PH3/ SiH4.  Sealed   J

Marsh / Bellofram: J4648 Guage. 2.5 STD, 1/4 NPT  

Custom Controls Sensor Inc. Model: 604P12 Pressure Switch.  3000 PSIG  

Tescom: 26-1620-24 Self Vent Pressure Reducing Reg.  In Press. 6000.  Out: 50   

Tescom: 26-10N9-69-728   Self Vent Pressure Regulator.  20,000 PSI  

Swagelok Model: SS-4-VCR-P OWE.  VCR Fitting.   New Old Stock    J

Consolidated Controls P/N: 41SG63-2 Pressure Transduce 

Lot of Axcelis Gas Feed Tubing, PN: 7638-0022-0001 

Manostar / Yamamoto: MS65L Differential Pressure Switch.  Unused Old Stock No  J

UNITED ELECTRIC Pressure SwitchType J6 Model 156, NIB =

Fluoroware / Galetk / Entegris Model: FE6-4FN-1   ?"  Elbow.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: FSU12 .? NPT Fitting.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: SU6-4FN-1  Reducer Union.  New Old Stock J

Fluoroware / Galetk / Entegris Model: FC4-6FN-1 Straight Adpt.   New Old Stock J

Fluoroware / Galetk / Entegris Model: E6-6TFN-1 Elbow.  3/8".   New Old Stock J

Fluoroware / Galetk / Entegris Model: PM6FN-1 Union.  3/8".   New Old Stock    J

Brooks Instruments: 1358CB1C1CAA Rate Flow Meter.  Good Used Stock   

Fluoroware:  WFA12P  PFA Straight Adapter. New Old Stock   J

Norgren Model: R07-200-RNKA Valve with Guage.     

MKS Type 250B-1-A Automatic Pressure Controller, .   R

LFE Corp. Model 40, PN: CB-0431-0000 Panel Meter  R

Eugene Ernst Products / EEP: Clear No. 500 Standard Glass Guage.  New Old Stock 

DWYER RMC-101-SSV-CDS RATE-MASTER FLOWMETER  

Ryan Herco Flow Solutions Model: 84417 Micropump MAG-DR Centrifugal Pump    W

Wika: 0 - 10,000 PSI Liquid Filled Gauge.  316 SS Tube and Connection.   No PN  

Hobbs Model: 76072-15 DC Pressure Switch.  New Old Stock  

NoShok Model: 25.120.100. PSI.FPT.? NPT  Control Guage.  New Old Stock 

Lot of Linemaster and Streamline Products. "C" Below   

Barksdale Model: D1H-A150SS Directional Control Val.  K

Fluoroware / Galetk / Entegris Model: FSU6 3/8" FNPT Fitting.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: UE4FN-1   ?"  Elbow.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: WMA12P 3/4" FNPT Fitting.  New Old Stock J

Fluoroware / Galetk / Entegris Model: E12-12FN-1   3/4" Elbow.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: FE8-6FN-1   3/8" Elbow.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: UE6FN-1   3/8" Elbow.  New Old Stock  

Norgren Model: R72G-3AK-RMG Regulator.  Inlet: 300 PSIG.  Outlet: 150 PSIG  

SMC AR2500 Filter Regulator,  used =

Fluoroware / Galetk / Entegris Model: E4-2FN-1  ? " Elbow.  New Old Stock  J

Fluoroware / Galetk / Entegris Model:  UT6-4-6FN-1 Union Tee.  New Old Stock  J

Fluoroware / Galetk / Entegris Model: BG8-6 Hose Adapter  New Old Stock  J

Fluoroware / Galetk / Entegris Model: C4-8FN-1 Straight Adapter  New Old Stock J

Fluoroware / Galetk / Entegris Model: SU2N.  Straight Union.  New Old Stock J

Fluoroware / Galetk / Entegris Model: UT12FN-1 3/4" Tee.  New Old Stock J

Data Tech Model: 379A (379A-0J00) 2000 Count DPM,  

MARSHALL TOWN GG-25100 L4 GG25100L4 100PSI 1/2" GUAGE  

Barksdale / IMO Model: D2T-H18SS-P2 Pressure Switch  

NORGREN 11-044-003 11-044 VALVE NEW  

Barksdale / IMO Model:  E1S-H90  Pressure Switch.  Adj. Range: 3 - 90 PSI  

Swagelok / Cajon Model: SS-2-UT-1-2 Ultra-Torr Vacuum Fitting.  New Old Stock   

Delany / Impulse: I4004A  Retrofit Kit for Diaghragm Valve. New Old Stock.   W

Matheson Regulator Assembly w/ 4384 and 3455 Valves  

Norgren Model: Z0002A.  ?" Port , 3-Port/2-Position Time Delay Valve  

2-1/2" DRY 1/2 NPT BRASS LOWER 0-100 PSI/KPA/BAR GUAGE 

Norgren Model: R73G-3AK-RMG Regulator kit w/ Gauge   

Squire-Cogswell Regulator Valve with Aschcroft Guage  

Squire-Cogswell Regulator Valve with Aschcroft Guage  

Tacmina Model: SXDA1-13-VEC-HW Metering Pump, New 

Integrated Flow Systems: SR4-120-6T-3XX3-S32-25 Valve.  110 PSIG Inlet, 25 PSIG 

Asahi / Americal:  D79SWII54 Pneumatic Actuator Valve.     J

Sauter Model: DFC 27B43W  F001 Heavy-Duty Pressure Switch .  No Cable  

Ryan Herco Model: 0352.033.  PFA Male Run Tee.   ? " H X ?.  New Old Stock   

Norgren Model: R17-800-RGLA Pressure Regulator with Gauge.  Good Used Stock   

Tescom: 44-2212-241 Pressure Regulator, w/ Guages.  3500 PSI Max Input   

Norgren Model: 17-016-107 Drip Leg Drain.  Good Used Stock   

ASHCROFT 25W1001TH 01B XUC PANEL MOUNT GAUGE NEW  

United Electric Type: J6D / Model: 12947 Press Switch  

Norgren Model: R07-200-RGAA Valve with Guage. 0 - 30 PSI     

Norgren Model: R07-200-RNKA Valve with Guage. 0 - 30 PSI     

Numatics Model: PS180CAN02  Pressure Switch  

Precision Sensors Model: 654-750001-G-34-4F-BE6  Sensor.  Range: 0-7500 PSIG   

United Electric Type F100, Mdl 3BS Pressure Switch, New

O.C. Keckley Y Type Cast Iron Strainer.  1? Female to Female NPT.  New Old Stk 

Fluoroware:  UT16TFN-1 Tee. 1" OD.  Union  Tee, Flared.   New Old Stock 

Fluoroware / Galetk / Entegris Model: E4-4FN-1  ? " Elbow.  New Old Stock   

Lot of Entegris  Model: FLC4  ,Closes Unused Tube.  Cap  Qty. 5.  New Old Stock 

SI Span Instruments: IPS122 Press. Guage w/Control Box 

Fluoroware Model: C4-4FN-1  ?" Flare   New Old Stock  

Georg Fischer +GF+  SYGEF HP Model: 735.798.688   New Old Stock  

World Magnetics Model: PSF105A  Pressure Switch.  New Old Stock.  No Box   

World Magnetics Model: PSF105A Switch, Missing Cover 

SWAGELOK NUPRO SS-BNV51-DJ-C Stainless Steel Valve.  New Old Stock  =R.

Marshalltown Instruments: Y1211 Industrial Thermometer.    New Old Stock  

Fluoroware:  WFA16P.  1" PurebBond , PFA Straight Adapter. New Old Stock   J

Lot of Teflon Square Pattern Nozzles.  1/8 NPT-M.  Qty 10.  New Old Stock.   J

PULSAtron Series E Metering Pump   W

Akron Electric, Inc ATI . Model: XJIHG1, 2-Wire Transmiter w/ H2 Valve   W

Norgren Model: F40-200-AOTA Oil Filter.  New Old Stock.  No Box . 

Norgren Safety Green Bowl, Regulator PN: 12-005-020 . 

Watts FluidAir:  R113-02CP Pilot Operated Regulator  

Georg Fischer +GF+  SYGEF HP Model: 735.158.638   Elbow.  New Old Stock  

Georg Fischer +GF+  SYGEF HP Model: 735.018.637   Elbow.  New Old Stock  

Georg Fischer +GF+  SYGEF HP Model: 735.158.636   Elbow.  New Old Stock  

Fluoroware / Galetk / Entegris Model: PM8FN-1 Union.  New Old Stock J

Georg Fischer +GF+  SYGEF: 735.518.711,  PVCF-HP Union.  New Old Stock  

Fluoroware / Galetk / Entegris Model: PM4FN-1 Union.  New Old Stock    J

Georg Fischer +GF+  SYGEF: 735.991.106. 90 X ?   NPT Butt.    New Old Stock  

Georg Fischer +GF+  SYGEF: 735.908.616 Reducing Bushing.    New Old Stock  

Fluoroware / Galetk / Entegris Model: FC8-8FN-1 Straight Adpt.   New Old Stock 

Fluoroware / Galetk / Entegris Model: E4-4TFN-1M   Elbow.  New Old Stock   

PARKER 31-30034-00 BRASS FEM ADPT FITTING QTY 160 NEW  

Brooks Instruments: 1355/C1F91AB2G0A1 Sho-Rate Flow Meter.  Good Used Stock   

Norgren Model:  0530  Pressure Guage.  New Old Stock.  No Box      

Norgren Model: RMH00RKXLGC0A.  Air Control Valve Kit.   New Old Stock   

Dwyer Model: RMC-101-SSV Flow Meter.  240 kPa, 35 PSIG Max.  54°C, 130°F Max.  W

Bristol Babcock 506008-48-7 Pressure Switch  

(2) USHIO LAMP EJY, EJM & GENERAL ELECTRIC Q20MR16 =

Watts FluidAir Model: F602-04BG M5 Filter.  Size:  ? , Max. PSI: 150   W

Lot of 3 Cinch 57-40500 Connectors, Box 5 Each, New 

Lot of Bosch Group / Racine: 1049 Hydro-Electro Valves 

Fluoroware / Galetk / Entegris Model: SU6FN-1  Reducer Union.  New Old Stock J

Lot of Watts FluidAir Model: EK602A Filter Elements, Qty. 2 W  

Fluoroware Model: E8-8FN-1.  ?" Elbow Fitting.  New Old Stock   

Dwyer Rate-Master Series  RMB Flow  Meter.  60 - 600 SCFH Air.  No Part Number  

Watts FluidAir Model: R164-02CK  Miniature Regulator.    

Manostar / Yamamoto: MS61L Differential Pressure Switch.  Used Stock    

Kofloc Model: 2400T Standard Needle Valve      

Airtrol Model: R-900-10 Subminiature Precision Regulator .  New Old Stock  

Conbraco Model: 62-101-01 Ball Cone Check Valve.   ?" F x ?" SS  

Unit Instruments Model: UFC-2000 MFC.  1 SLPM, Gas: H2.  Sealed Stock   J

Fluoroware Model: C6-4N Straight Adapter, MNPT.    3/8" X ?"    New Old Stock  

WIKA TYPE: 213.53 2.5 1000PSI 9767126 1/2" GUAGE.  New Old Stock   

Continental Hydraulics: N5S-OC-G-4 Throttle Valve w/   

Ashcroft Test Guage, Temerature Compensated. No Mdl #  

Square D Type: GDW-5 Pressure Switch  

Norgren: R07-100-RGKA Valve w/ 18-013-212 Guage   

Watts Model R10-02C (M3) General Purpose Regulator.  New Old Stock  

Marsh: J4020 Guage.  2.5 STD 1/8" NPT.  30X 300 INHGXPSI & KPA.  New Old Stock  

Disco Engineering Model: MOMCH193--A Regulator  

Master Pneumatic: RS100 Silencer / Reclassifier  

Wika: 232.53 Guage.  P/N: 9768327.  2.5", 100PSI, ?" CBM/FF.  New Old Stock   

Accurate Gas Control Systems Vertical Gas Cylinder   

Norman Filter Company Model: 4532AA-03PL Filter Element    

Norgren Model:  18-013-209 Pressure Guage.  New Old Stock     

Tescom: 26-1620-24-000  Self Vent Pressure Regulator w/ Guage.  6000 PSI  

Superior Valve Company Model: 600A-4B Packed Angle Valve.   New Old Stock  

KIRCHNER & TOCHTER SGK 4 G1/4" NITROGEN FLOW METER NEW 

Unit Instruments UFC-1100 High Performance Mass Flow Cntlr.  Gas. N2.  Refrb.  J

Dayton Model: 3A434 Solenoid Valve Body.  New Old Stock  

C.A. Norgren Model: MB002A,  ?" Quietaire Pneumatic Silencer.  New Old Stock  

Brooks Instruments Flow Meter with R2-15-D Tube    

Norgren Model: 11-181-100 Presicion Regulator.  150 PSIG  

Anarak Model: SS-100-HC NC Air Operated Valve  

Norgren Model: MB003A Quietaire Muffler.  5/8" NPT, 88mm Overall Length   

ITT Neo-Dyn Model: 200P18C3 Adjustable Pressure Switch.  .  

Entegris (Fluoroware) Galtek:  203-1414-425 Solenoid  

Ashcroft Model: 601010A-04L 0/15#  & 0/100 General Service Guage.  ? NPT Lower W

Georg Fischer +GF+  SYGEF HP Model: 735.158.635   Elbow.  New Old Stock  

Watts FluidAir:  R113-02CP Pilot Operated Regulator.  New Old Stock   

Watts FluidAir:  R119-032CP Pneumatic  Regulator.  Unused Old Stock.  No Box    

Norgren: R07-200-RGKA Valve w/ 18-013-212 Guage  P

Humphrey Model: RT02-0249-1 Rate Transducer, 3-Axis.   

Conrac Instruments Model: 481322-A4Z6-400-50 Pressure Transducer.  New Old Stk  

Conrac Instruments Model: 451329-A4V7-1.5-50 Pressure Transducer.  New Old Stk  

Conrac Instruments Model: 451329-A4V7-3-20 Pressure Transducer.  New Old Stock  

Manostar / Yamamoto: MS65L Differential Pressure Switch. Gently Used Stock    J

Giannini Controls Model: 451329-A4VC Pressure Transducer.  New Old Stock  

Honeywell Model: 901A-1004 Pressure Regulator and Relief Valve.  New Old Stock  

Tescom: 26-2091D24S270AE  Self Vent Pressure Regulator w/ Guage.  10,000 PSI  

Conrac Instruments: 24155, F-0/10-50 Accelerometer.  0 To +10G,  5000Ω, .010A  

Conrac Instruments: 24155, FF Accelerometer.  0 To +200G,  10K Ω, .010A.  New O 

Conrac Instruments: 24155, G-1/15-20 Accelerometer.  0 To +15G,  2000Ω, .010A  

Conrac Instruments: 24155, G-15 Accelerometer.  0 To +15G,  5000Ω, .010A.   

Conrac Instruments: 24158, C-10-50  Accelerometer.  10G,  5000Ω, .010A.   

Giannini Controls: 24155, F-30-20 Accelerometer.  0 To +30G,  2000Ω, .010A  

Giannini Controls: 24155, G-100-20 Accelerometer.  +/-100G,  2000Ω, .010A  

Giannini Controls: 24158, C-5-20 Accelerometer.  +/-5G,  2000Ω, .010A. New Old  

Giannini Controls: 24155, F20-20 Accelerometer.  0 - +20G,  2000Ω, .010A.  

LDS SC-7C WHITEY 10EK907 5.55 X 10-7 ATM HELIUM LEAK  

Master Pneumatic Model: BFCD101-12 .  New Old Stock w/ Instructions.  No Box   

Northrop FSC 51834 Rate Gyro.  P/N: 68215-429.  1-Axis, DC/DC.  New Old Stock  

LDS SC-7C WHITEY 10EK907 5.91 X 10-7 ATM HELIUM LEAK  

Conrac Instruments: 24155, G-5-50 Accelerometer.  0 To 5G,  5000Ω, .010A  

Conrac Instruments: 24155, G-10/5-50 Accelerometer.  -10 To +5G,  5000Ω, .010A  

Conrac Instruments: 24155, G-5-50 Accelerometer.  -10 To 5G,  5K Ω, .010A  

Winter's 0 - 100 PSI & KPA Code 904 Guage.  2.5 X ? NPT.  New Old Stock 

ConneCticut Tubular Model: 3700-6PC.  1 ?x6 Cast Brass Grid Strainer   W

Dwyer Cat. 2-5001 Minihelic II Differential Pressure Guage.  Cat. #:  N23T   W

Dwyer Cat. N44K Minihelic II Differential Pressure Guage.   W

UE / Precision Sensors Model: V13F-14 Flow Switch   

Watts Model: R35-2A  Regulator  w/ Guage   W

Watts Model: R35-2A  Regulator  w/ Guage.  No Acrylic Cover on Guage  W

Watts Model: SV35-02,  ?" Air Lockout Valve   W

C.A. Norgren Model: L08-300MPDA Lubricator