SP3338-16XP90鼎晟达
日期：2021-3-51、基本概念
我们生活在一个物质的世界中。世间所有的物质都包含了化学和物理特性，我们是通过对物质的表观性质来了解和表述物质的自有特性和运动特性。这些表观性质就是我们常说的质量、温度、速度、压力、电压、电流等用数学语言表述的物理量，在自控领域称为工程量。这种表述的优点是直观、容易理解。在电动传感技术出现之前，传统的检测仪器可以直接显示被测量的物理量，其中也包括机械式的电动仪表。
2、标准信号
在电动传感器时代，中央控制成为可能，这就需要检测信号的远距离传送。但是纷繁复杂的物理量信号直接传送会大大降低仪表的适用性。而且大多传感器属于弱信号型，远距离传送很容易出现衰减、干扰的问题。因此才出现了二次变送器和标准的电传送信号。二次变送器的作用就是将传感器的信号放大成为符合工业传输标准的电信号，如0－5V、0－10V或4－20mA（其中用得最多的是4－20mA）。而变送器通过对放大器电路的零点迁移以及增益调整，可以将标准信号准确的对应于物理量的被检测范围，如0－100℃或-10－100℃等等。这是用硬件电路对物理量进行数学变换。中央控制室的仪表将这些电信号驱动机械式的电压表、电流表就能显示被测的物理量。对于不同的量程范围，只要更换指针后面的刻度盘就可以了。更换刻度盘不会影响仪表的根本性质，这就给仪表的标准化、通用性和规模化生产带来的无可限量的好处。
3、数字化仪表
到了数字化时代，指针式显示表变成了更直观、更精确的数字显示方式。在数字化仪表中，这种显示方式实际上是用纯数学的方式对标准信号进行逆变换，成为大家习惯的物理量表达方式。这种变换就是依靠软件做数学运算。这些运算可能是线性方程，也可能是非线性方程，现在的电脑对这些运算是易如反掌。
4、信号变换中的数学问题
信号的变换需要经过以下过程：物理量－传感器信号－标准电信号－A/D转换－数值显示。
声明：为简单起见，我们在此讨论的是线性的信号变换。同时略过传感器的信号变换过程。 假定物理量为A，范围即为A0－Am，实时物理量为X；标准电信号是B0－Bm，实时电信号为Y；A/D转换数值为C0-Cm，实时数值为Z。
如此，B0对应于A0，Bm对应于Am，Y对应于X，及Y=f(X)。由于是线性关系，得出方程式为Y=(Bm-B0)*(X-A0)/(Am-A0)+B0。又由于是线性关系，经过A/D转换后的数学方程Z=f(X)可以表示为Z=(Cm-C0)*(X-A0)/(Am-A0)+C0。那么就很容易得出逆变换的数学方程为X=(Am-A0)*(Z-C0)/(Cm-C0)+A0。方程中计算出来的X就可以在显示器上直接表达为被检测的物理量。
5、PLC中逆变换的计算方法
以S7-200和4－20mA为例，经A/D转换后，我们得到的数值是6400－32000，及C0=6400，Cm=32000。于是，X=(Am-A0)*(Z-6400)/(32000-6400)+A0。 例如某温度传感器和变送器检测的是-10－60℃，用上述的方程表达为 X=70*(Z-6400)/25600-10。经过PLC的数学运算指令计算后，HMI可以从结果寄存器中读取并直接显示为工程量。
用同样的原理，我们可以在HMI上输入工程量，然后由软件转换成控制系统使用的标准化数值。
在S7-200中，(Z-6400)/25600的计算结果是非常重要的数值。这是一个0－1.0（100％）的实数，可以直接送到PID指令（不是指令向导）的检测值输入端。PID指令输出的也是0－1.0的实数，通过前面的计算式的反计算，可以转换成6400－32000，送到D/A端口变成4－20mA输出。
以上讲述的是PLC中工程量转换的基本方法，程序的编写则因人、因事而异。但是万变不离其衷。如果大家感兴趣，我可以给出自己编写的程序供大家参考，同时也希望各位网友不吝赐教、互相交流。
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Granville-Phillips 275 Mini-Convectron Module Vacuum Gauge 275538-GD-T
GRANVILLE PHILLIPS 275 MINI-CONVECTRON
Granville-Phillips 343033-EU Mini-ion Gauge
GRANVILLE PHILLIPS BROOKS AUTOMATION 385011-GD-T CONVECTRON GAUGE NW16"
GRANVILLE PHILLIPS 275 MINI-CONVECTRON GAUGE 275507-EU [3UNITS]
Granville Phillips 307 RS-232 307019 Vacuum Measurement Controller
GRANVILLE-PHILLIPS GP307 PRICESS CONTROL 307017 009006-108 Expedited shipping
Granville-Phillips Brooks Automation Micro-Ion Catalog # 354006-YM-T
GRANVILLE-PHILLIPS 354003-YD ION GAUGE REPLACEMENT FILAMENT
Granville-Phillips 275 convection gauge, GP 27600 Model Number, 328504
GRANVILLE PHILLIPS 385007-GQ-T Vacuum Gauge Controller
Granville-Phillips 275 Mini-Convectron, 275801-EU, Farmon ID 413136
Granville-Phillips Micro-Ion Module - 20354015-YD-T
GRANVILLE PHILLIPS GP 275 CONVECTRON GAUGE, DIGITAL READOUT, 115V, 10W, 50/60HZ
Granville Phillips Mini ion Gauge 20342011 GP Vacuum 342
Granville Phillips 307 Vacuum Gauge Controller Cat 307001 Model 01
NEW GRANVILLE PHILLIPS 20352013-5 CABLE FOR STABIL-ION GAUGE
GRANVILLE-PHILIPS 307 VACUUM GAUGE CONTROLLER 307123
Granville-Phillips 275098 Convectron, Digital Readout Controller, Gauge, 328835
Granville-Phillips Catalog No. 275243 Convectron Gauge Zero Pressure Simulator
GRANVILLE-PHILLIPS 352 GAUGE CONTROLLER 352001
Gauge GRANVILLE PHILLIPS 274012 274 BAYARD-ALPERT TYPE IONIZATION GAUGE TUBE
Granville-Philips 354 Micro-Ion Module,20354014-TD-T
Granville Phillips 275 Mini-Convectron Gauge 20275-257
GRANVILLE PHILLIPS 275244 CONVECTRON GUAGE SIMULATOR
Granville-Phillips, Series GP-275, Convectron Gauge, 115V, 10W, 50/60Hz
Granville-Phillips 275 Mini-Convection 275856-EU SN 275F2899
GRANVILLE PHILLIPS CONVECTRON GAUGE 275203 #
GRANVILLE-PHILLIPS CONVECTRON 307013 012711-102 Expedited shipping
Granville-Phillips 275 Mini-Convectron catalog # 275538-GD-T
GRANVILLE PHILLIPS DIFFERENTIAL OUTPUT AMPLIFIER 275 MINI CONVECTRON
GRANVILLE-PHILLIPS 352 Vacuum Ion Gauge Controller 352001
BROOKS AUTOMATION GRANVILLE PHILLIPS 352002-20 CABLE FOR STABIL-ION GAUGE
Granville-Phillips 275-615-07, Mini-Convectron, Analog, 406552
Granville-Phillips 275553-GD-T 275 Mini-Convectron Module w/DeviceNET (HYD1379)
GRANVILLE PHILIPS HIGH VACUUM ION GAUGE CONTROLLER 271-003(ITEM # 485B-11)
GRANVILLE PHILLIPS 275243 Convectron Gauge Zero Pressure Simulator
Granville Phillips 354005-YD-T Micro-Ion Gauge
Granville-Phillips Company 275 Analog Convectron Gauge Controller 275092
Granville-Phillips 352002-6, 6FT Cable for Stabil Ion Gauge
GRANVILLE PHILLIPS 20 352005 TYPE 352 GAUGE CONTROLLER
GRANVILLE PHILLIPS 275856 275 MINI-CONVECTRON MODULE
Granville-Phillips UHV-Y Stabil Ion Gauge 370 Working
Granville-Phillips 275 Mini-Convectron Series 275
NEW GRANVILLE-PHILLIPS 275816 CONVECTRON VACUUM PRESSURE GAUGE MEASURE SENSOR
NEW GRANVILLE PHILLIPS 275838 275 MINI-CONVECTRON MODULE 1/4" AMAT 3310-01088
Sensor GRANVILLE-PHILLIPS 275-MINI Convectron Gauge
Granville-Philips 354 Micro-Ion Module,354019-TD-T,Brooks,Helix,USA
Granville-Phillips 354019-TD-T 354 Micro-Ion Module Working
Granville-Phillips 3520002-6 Stabil Ion Gauge Controller 0190-13314
Ionization tube Granville Philips with fittings
GRANVILLE PHILLIPS PRESSURE / FLOW CONTROLLER SERIES 215 (ITEM #5101/12)
New Granville-Phillips 275 Mini Convectron 275591
Granville-Phillips 275 Mini-Convectron Vacuum Gauge (pulled)
Granville Phillips Thermocouple 270006 Gauge Tube 414967
GRANVILLE-PHILLIPS 275806-EU 275 Mini-Convectron
Granville-Phillips 275 Mini-Convectron Module Vacuum Gauge RS-485/422 Interface
Granville Phillips 008254 Lens Gauge Cable
5348 GRANVILLE-PHILLIPS DIFFERENTIAL OUTPUT AMPLIFIER VACUUM GAUGE 275821
Granville Phillips, 275 Mini Convectron, 275-800
Granville Phillips 275-071, 275 Convection Gauge, 412411
Ionization gauge controller rack mount 260 Granville phillips 260015
GRANVILLE-PHILLIPS 385011-GD-T BOOKS AUTOMATION,
GRANVILLE-PHILLIPS 275862-EU HELIX TECHNOLOGY CORPORATION,
Granville-Phillips 275203 Convectron Gauge NW KF16
GRANVILLE-PHILLIPS 20275991 BOOKS AUTOMATION,
Granville Phillips 352002-20 Cable Assembly for Stable Ion Gauge
Granville-Phillips Company 275 Digital Convectron Gauge Controller 275107
GRANVILLE PHILLIPS 275529-EU GAUGE
GRANVILLE PHILLIPS 275534-EU GAUGE
NEW AMAT GRANVILLE PHILLIPS 275838 MINI CONVECTRON ANALOG OUTPUT 1 SET POINT
GRANVILLE PHILLIPS 275 MINI-CONVECTRON 275546-PE-T
[2UNITS] GRANVILLE PHILLIPS 275 MINI-CONVECTRON GAUGE 275807-EU
GRANVILLE PHILLIPS 275 MINI-CONVECTRON GAUGE 275905-EU
Granville Phil?lips 352001 Vacuum Gauge Controller 352 Gauge Helix
Granville Phillips 316 316505-03B-T1 Vacuum Gauge Controller
GRANVILLE-PHILLIPS Guage 275553-GQ-T 275 MINI-CONVECTRON SEN-I-222=P507
GRANVILLE-PHILLIPS GP370 ELECTROMETER 307015 009001-108 Expedited shipping
GRANVILLE PHILLIPS GP 275 CONVECTRON GAUGE- SERIES 275- DIGITAL READOUT
NEW GRANVILLE-PHILLIPS GPC 352002-6 0190-13314 CABLE 7 PIN 013683
NEW GRANVILLE PHILLIPS 274025 DUAL THORIA-COATED IRIDIUM REPLACEMENT FILAMENT
Granville Phillips 332 Vacuum Gauge Controller 230VAC 50-60Hz
Granville-Phillips 356002-YG-T Micro-Ion Plus Vacuum Gauge w/o Cover
GRANVILLE-PHILLIPS 275 MINI-CONVECTRON 275998 Expedited shipping
GRANVILLE-PHILLIPS 275243 CONVECTRON GAUGE ZERO PRESSURE SIMULATOR
Granville Philips 360 370 Stabil-ion Ionization Vacuum Pressure Gauge Sensor
Granville Philips 352 Stabil-ion Ionization Vacuum Gauge Controller W/O Acces
Granville-Phillips 275 Mini Convection Amat 275838
lot of 2 Granville Phillips 275806-EU 275 Mini Convectron
Granville-Phillips 275856-EU DEC06 Rev.00
Granville-Phillips 275 Mini-Convection Linear Analog Output 275856-EU
Granville-Phillips Helix Technology 275856-EU Mini-Convectron 275
Granville-Phillips 275546-EU-1 275 Mini-Convectron Vacuum Gauge Working
Granville Phillips Model 203 Variable Rate Leak Valve & Counter Lab Apparatus
Granville-Phillips 275 Mini-Convectron 275806
GRANVILLE PHILLIPS CONVECTRON GAUGE 275185 PRESSURE MEASUREMENT SENSOR
Granville-Phillips: Model: 275106 Convectron Vacuum Guage
GRANVILLE PHILLIPS GP 275 CONVECTRON GAUGE- SERIES 275- DIGITAL READOUT
Granville-Phillips 275 Convectron Gauge
(HD) Granville Phillips 275 Mini-Convectron, 275856 - EU
Granville Phillips Series 270 Gauge Controller 270002
Granville-Phillips 20275508 275 Mini-Convectron Vacuum Gauge Working
NO Test HELIX Granville Philips 275 high Vacuum Pirani Gauge Head W/O Cable
GRANVILLE PHILLIPS 354006-YG-T MICRO-ION GAUGE
Granville-Phillips (MKS) 347 STABIL-ION? Vacuum Gauge Module
GRANVILLE PHILLIPS 352 GAUGE CONTROLLER
GRANVILLE-PHILLIPS 275 SERIES MINI CONVECTRON
SERVO DRIVEN VALVE ASSEMBLY MODEL# 216 BY GRANVILLE-PHILLIPS COMPANY
Granville-Phillips 275 Mini-Convectron Module Vacuum Gauge Analog Output
GRANVILLE PHILLIPS 354006-YG-T MICRO-ION GAUGE
GRANVILLE-PHILIPS L02469 Convectron Gauge
GRANVILLE PHILLIPS 354006-YE-T MICRO-ION GAUGE Rev.6
GRANVILLE-Phillips 275806-EU 275 Mini-Connectron Vacuum Gauge Working
GRANVILLE-Phillips 275806 275 Mini-Connectron Vacuum Gauge Working
Granville-Phillips - 275 838 - Mini-Convectron
Granville Phillips 352 Gauge Controller P/N 352001
Granville Phillips 275 Convectron Vacuum Gauge Sensor w/ Stainless Steel Flange
Granville Phillips 275 Mini-Convectron Gauge, Type : Female
Granville Phillips 275 Mini Convectron Vacuum Gauge 275821
Granville-Phillips 275 Mini Convection Amat 3310-01088 -- 275838 --
APPLIED MATERIALS 3310-00313 AMAT GRANVILLE-PHILLIPS CONVECTRON GAUGE 275592
GRANVILLE-PHILIPS MINI-CONVECTRON GAUGE 275862-EU
Granvile-phillips ionization gauge Model 27405
GRANVILLE PHILLIPS 354006-YE-T MICRO-ION GAUGE Without Name-Plate
GRANVILLE PHILLIPS CO 275186-1 USPP 2751861
Granville-Phillips Catalog No. 275816 Convectron Gauge - Very nice condition!
GRANVILLE PHILLIPS 275203 Convectron Gauge KF16 Flange
Granville-Phillips 275 MINI-CONVECTOR Differental Output Amplifier; P/N:275821
[1893]GRANVILLE-PHILLIPS 275MINI-CONVECTRON GAUGE 275862-EU
Gauge GRANVILLE-PHILIPS 275262 CONVECTRON TUBE 1/4 FVCR
GRANVILLE PHILLIPS275 MINI-CONVECTRON 275863-EU
GRANVILLE-PHILIPS MINI-CONVECTRON GAUGE 275807-EU
Granville Phillips 275 Convectron Vacuum Gauge Sensor w/ Stainless Steel Flange
GRANVILLE PHILLIPS CONVECTRON GAUGE 275071 LOT OF 2
GRANVILLE PHILLIPS 275821 VACUUM GAUGE
GRANVILLE PHILLIPS CONVECTRON GAUGE 275185 PRESSURE MEASUREMENT SENSOR #
GRANVILLE PHILLIPS 275 DIGITAL CONVECTION GAUGE
Granville-Phillips Brooks Series 275 Mini-Convectron Vacuum Gauge
GRANVILLE PHILLIPS CO 005353 NSPP 005353
GRANVILLE PHILLIPS 354006-YE-T MICRO-ION GAUGE
Granville-Phillips 275185 Convectron Pirani Vacuum Gauge 275 Working
Granville-Phillips 275262 Convectron Pirani Vacuum Gauge 275 Working
Granville Phillips 275821 Differential Output Amplifier Working
GRANVILLE PHILLIPS CO 1-00-005249 USPP 100005249
Variable leak valve parts, w/counter Model 203 Granville Phillips PARTS
Granville-Philips Electrometer Module 350 Vacuum Gauge Controller 10335-104
Granville-Phillips 274015 Ion Gauge Tube
GRANVILLE PHILLIPS 385001-GE Convectron ATM Vacuum Gauge
GRANVILLE PHILLIPS 385007-GQ-T Convectron ATM Vacuum Controller 385007-GQ-T
Granville-Phillips 385003-GD-T Convectron ATM Vacuum Controller
Granville Phillips 275 Mini-Convectron Catalog# 275856 - EU NW16KF FLANGE
[2049] CONVECTRON GAUGE GRANVILLE-PHILLIPS CATALOG NO. 275 (20275298)
Granville-Phillips 275 Convectron Gauge Cat No. 275102 ~ 115VAC, 50-60Hz, 10W
Granville-Phillips 352 Vacuum Gauge Controller
GRANVILLE PHILLIPS 274 series ionization gauge, 274-028
GRANVILLE PHILLIPS 275 MINI-CONVECTRON
GRANVILLE-PHILLIPS 275 MINI-CONVECTRON
1552 GRANVILLE-PHILLIPS MINI-CONVECTRON 275856
Granville- philips Ionization vacuum Gauge model 274013 274017 274021 B-76
G125845 Granville Phillips 307 Vacuum Gauge Controller
GRANVILLE PHILLIPS 352001 352 GAUGE CONTROLLER
GRANVILLE-PHILLIPS - Cat.#275185 -Convection Gauge - Vacuum Measurement Sensor
GRANVILLE-PHILLIPS - Cat.#275071- Convectron Gauge, Vacuum Measurement Sensor
Granville Phillips 307 Vacuum Gauge Controller 307089
GRANVILLE PHILLIPS CONVECTRON GAUGE 275185 PRESSURE MEASUREMENT SENSOR #2
GP Granville Phillips 342011 NW16 Mini-Ion Gauge
Granville-Phillips Mini-Ion Gauge Part No. 343014 Model 00 (serial conn.) Y
GRANVILLE PHILLIPS CONVECTRON GAUGE 275262
GRANVILLE PHILLIPS CONVECTRON GAUGE 275203
Granville Phillips 307 Front Panel Cover
Granville Phillips 307 307016 UHV Electrometer
Granville Phillips 307 307013 Convectron Module
Granville Phillips 307 307017 Process Control 009006-108
Granville Phillips 307 316015 Convectron Module 013699-100
Granville Phillips 307 316016 Convectron Module
Granville Phillips 307 307100 Linear Analog Module 009907-102
Granville Phillips 307 Process Control 009006-107 316020
Granville Phillips 307 316020 Process Control 009006-108
Granville Phillips 307 307015 Electrometer
(Qty-3) Granville-Phillips / Varian 275 Convectron Gauges
(Qty-2) Granville-Phillips 275 (275-807) Mini-Convectron Vacuum Gauge Modules
[2048] CONVECTRON GAUGE GRANVILLE-PHILLIPS CATALOG NO. 275203
07-101// GRANVILLE-PHILLIPS 275807 275 MINI-CONVECTRON [/FAST]
GRANVILLE-PHILLIPS 275807-EU HELIX TECHNOLOGY CORPORATION,
Granville Phillip Cable 008918, GG1075, GCI2403, Shipsameday #142P
GRANVILLE PHILLIPS CO 275243 USPP 275243
Granville-Phillips 275102 Convectron, Digital Readout Controller, Gauge, 328836
Granville-Phillips 275106 275 Convectron Gauge
Granville Phillips 275-500 Mini-Convectron Gauge
Granville Phillips MKS 275071 Convectron Gauge Sensor
MKS 275262 Convectron Gauge,Granville-Phillips,-4162
Granville-Phillips 216 Pressure Flow Controller
Customs services and international tracking provided
Granville-Phillips: Model: 275071 Convectron Vacuum Guage. Un Old Stock
1 Granville Phillips 275 Convectron Gauge 115V Vac 10W Watts
Granville-Phillips 260 260022 Ionization Gas Vacuum Gauge Controller Model 01
Granville-Phillips 1003840 Gauge 355 micro ion 90 deg. Item # 355018
Granville-Phillips Micro-Ion Plus Replacement gauges .
Granville Phillips MKS 275262 Convectron Gauge Sensor
Granville Phillips 390410-0-YE-M Micro-Ion ATM Vacuum Gauge Module 390 Rev. 5
Granville Phillips 275 Mini-Convectron Gauge 257506-M
MKS/Granville-Phillips/Brooks 390510-0-YK-T Micro-Ion ATM Piezo Vacuum Gauge
GRANVILLE PHILLIPS 275203 Convectron Gauge KF16 Flange
[1944] GRANVILLE-PHILLIPS 275807-EU, HELIX TECHNOLOGY CORP.
Granville-Phillips Coaxial Communications Cable
GRANVILLE-PHILIPS MINI-CONVECTRON GAUGE 275507-EU
GRANVILLE-PHILIPS MINI-CONVECTRON GAUGE 275856-EU
Granville Phillips Control Board P/N 009003-108
Granville Phillips 390410-0-YE-M Micro-Ion ATM Vacuum Gauge Module 390 Rev. 3
Granville Phillips 275 mini-convectron 20275546-eu-1
Granville Phillips GP 275 Mini Convectron LON Interface 20275-605
Granville-Phillips 275 Convection Gauge
Granville-Phillips 275 Mini-Convectron Vacuum Gauge Controller Module
Granville Phillips A112902 A112902 CABLE, ION GAUGE TUBE
Granville Phillips Mini Convectron 275 Vacuum Pressure Gauge
Granville-Phillips Mini-Convectron Vacuum Gauge -- 275-806 --
Granville-Phillips 275 Mini Convectron --No, 275863-EU
Granville-Phillips 91-270 270044 Ionization Gauge Controller
Granville Phillips 275998 Mini-Convectron Ion Gauge
G116467 Granville Phillips Brooks Automation 275591 275 Mini Convectron
Granville- philips Ionization vacuum Gauge model 274050
GRANVILLE-PHILLIPS 275 MINI-CONVECTRON 275998
Granville-Phillips: Model: 275071 Convectron Vacuum Guage
GRANVILLE-PHILLIPS 275 SERIES MINI CONVECTRON
GRANVILLE PHILLIPS 275 MINI-CONVECTRON GAUGE
Granville-Phillips Mini Convectron Module Gauge 275998
Granville-Phillips: 270006 Thermocouple Guage Tube
Granville-Phillips 307 Vacuum Gauge Controller 307001 + 307005
Granville Phillips 275-071, 275 Convection vacuum Gauge
Granville-Phillips 275 Mini-Convectron,275 801-EU,,USA-4133
Granville Phillips 352001 352 Gauge Controller Check out the Pictures... WOW
GRANVILLE-PHILLIPS 60-10006-00 CONVECTOR GAUGE LOADLOCK DIFFERENTIAL OUTPUT
Granville-Phillips 275282 Convectron Gauge Vacuum Pressure Measurement Sensor
Granville-Phillips 275945 Mini-Convectron 275 with RS-485/422 Interface
1924 C140 Tobacco Products Corp ATHLETES -PHILIP GRANVILLE (10,000 Meter) *RARE*
GRANVILLE PHILIPS 275 CONVERSION GAUGE
Granville Phillips Mini Convectron 275 Vacuum Pressure Gauge
Granville-Phillips 275 Convectron Vacuum Gauge Tube 275071
[1660] GRANVILLE PHILLIPS 275 MINI-CONVECTRON
Granville Phillips 275 Convectron Gauge 115VAC
Granville-Phillips 216 Pressure/Flow Controller
Granville-Phillips 270006 Thermocouple Gauge Tube/Vacuum
Granville Philips RS-485 Micro-Iron Plus Helix Technology Corp
Granville Phillips Convectron Vacuum Gauge QF KF
Granville Phillips Convectron Vacuum Gauge Threaded Pipe Fitting
Granville-Phillips 275-801 Mini-Convectron Vacuum Gauge Module 275801
GRANVILLE-PHILLIPS 216 PRESSURE / FLOW CONTROLLER
Granville-Phillips 275 Mini-Convectron Vacuum Gauge Module, 275605 Agilent MS
Granville-Phillips 260 Gauge Controller Catalog No. 260016 ~ For Parts Only
Granville-Phillips Vacuum Gauge Controller Electrometer 009001-107
Granville-Phillips RS232 to Fiber Optic Board 010351-101
Granville-Phillips Mini-ion Gauge 342011 RJ-45/The inside glass Gauge is broken
GRANVILLE-PHILLIPS 275 MINI-CCONVECTRON Excellent Working Condition
H119460 Granville-Phillips 275 Convectron Gauge Cat No. 275092
Granville-Philips 275 Mini-Convectron P/N: 275553
Granville-Phillips 370 Stabil-Ion Vacuum Measurement Controller 370101
Granville-Phillips 275 Mini-Convectron Excellent Working Condition 275538-GD-T
GRANVILLE PHILLIPS 275 CONVECTRON GAUGE 115 VAC / 50-60 HZ / 10 WATTS
Granville-Phillips GP Vacuum Gauge No 342
GRANVILLE-PHILLIPS 275 MINI-CONVECTOR DIFFERENTIAL OUTPUT AMPLIFIER
GRANVILLE-PHILLIPS ULTRA HIGH VACUUM VALVE SERIES 202 FAST FREE SHIPPING
Granville-Phillips 275 Mini Convectron
Granville-Phillips Model 274015 Ionization Gauge
Granville-Phillips 352 Gauge Controller
Forty Years on the Frontier by Stuart, Granville/ Phillips, Paul C./ Milner I...
Granville-Phillips Thermo-Gauge No. 260-009 - Industrial Surplus
Granville Phillips Thermo-Gauge 260009 Vacuum Gauge
Replacement Meter - Granville-Phillips Series 275
Granville-Phillips 275 Convectron Gauge Calibrated For N2
GRANVILLE PHILLIPS 260-009 THERMO GAUGE
GRANVILLE PHILLIPS CONVECTRON GAUGE ZERO PRESSURE SIMULATOR 275243
Granville Phillips 213 Auto Pressure Control