6622T Datasheet - Guildline Instruments
Contents
1. GUILDL NE INSTRUMENTS 6622T SERIES FEATURES Accuracy to 0 025 mK i e best uncertainty at 0 1 ppm Extended Performance XP Model Provides Best Accuracy at 0 013 mK i e best uncertainty at 0 05 ppm Wide Range From 0 1 Q 100 kO Supporting a Wide Variety of SPRT s PRT s RTD s Including Ruthenium Oxide RTD s Used In Cryogenic Applications Built in Temperature Conversion for ITS 90 and IPTS 68 Optimized for Operation at Low Power Levels and Higher Speeds Optional Thermometry Adaptor with Programmable Pre Heat and Full Automation Capability Graphical and Statistical Display Resolution 0 001 ppm of Full Scale Linearity 0 01 ppm of Full Scale Wide Range of Ratios 0 1 1 100 1 Fully Programmable IEEE 488 2 BridgeWorks Data Acquisition Software Unique Calibration Support Strategy Complete Measurement Systems Available Optional Internal Resistance Calibration Model 6622T Series DCC THERMOMETRY BRIDGES ACCURATE WIDE RANGE DCC THERMOMETRY BRIDGES GUILDLINE INSTRUMENTS MODEL 6622T THERMOMETRY Bridge Series expands upon the success of 6622A Series Resistance Bridges by utilizing engineering ingenuity to offer leading uncertainties and stabilities for Temperature Bridges This design introduces unique innovations in hardware and software for a wide range Thermometry Bridge Series accommodating SPRT s PRT s various RTD s and thermistors T2. leads and accessories to include system integration and IEEE are available 30844 00 85_B Copyright 2012 06 07 Gu Idline Instruments Limited All rights reserved Subject to change without notice Guildline Instruments Limited 21 Gilroy Street PO Box 99 Smiths Falls Ontario Canada K7A 4S9 Phone 613 283 3000 Fax 613 283 6082 Web www guildline com Email sales guild ine com
3. new average standard deviation and graphical view of your measurement which can be used for your official reported reading Meanwhile all the information on the full test realizing the plateau is still retained in the Summary buffer and on a computer if connected Both buffers can be independently cleared at any time and come with their own graph The individual points can be viewed in the detail buffer and captured to a computer over the remote interface The statistical analysis of both buffers can be viewed in the summary screen This analysis provides mean standard deviation minimum value maximum value and sample counts for both independent buffers With Guildline s 6622T Thermometry Bridge customers only need to deploy and support a ONE BRIDGE SOLUTION to meet their temperature calibration needs and optionally their resistance measurement needs For customers this means a substantial reduction in staff training and capital spending The flexibility to purchase options and upgrades for the 6622T Bridge means that new calibration procedures can be implemented inexpensively without additional training and support that is required when new calibration instruments are purchased from multiple vendors 66271 DCC THERMOMETRY BRIDGE SERIES 6622T BRIDGEWORKS SOFTWARE Not only does Guildline provide unique features with our DCC Thermometry Bridge hardware but also we offer complete automation solutions via our software BridgeWorks can comple
4. ard resistor CEN E UNCERTAINTY 23 2 C RESISTANCE TEMPERATURE ad 0 STANDARD XP MODEL PROBE TYPE RANGE Q RANGE K CURRENTMA RESISTORQ MK PPMOF RATIO Fo2saurertipy 004 10 273 1343 10 0075 somre 04 100 273 1343 3 1 om 27 aRTD RhFe 177s 14 300 1 10ort 25 oom were 17 340 73 873 1 soron oon 66 361_ 193 533 1 25 or10 100 oon 2252 Q Thermistor 3 273 10 kQ Thermistor 2 6k 30k 273 373 s 5 yy IKI 0 03 1k or 10k 0 250 2 2 kQ RTD RuO2 2 2k 75k 0 02 4 2 0 01 1k or 10k 0 250 VERIFICATION OF PERFORMANCE Historically the calibration of a precision Thermometry Bridge was challenging A Harmon type transfer standard was needed for the verification of a bridge s non 1 1 measurement ratios along with high technical skill levels With the introduction of the 6622A multi ratio bridge a verification of performance relative to the most recent calibration can be carried out with ease Frequent verification of the bridge performance can also provide insight into the bridge s short and long term stability to improve user s confidence levels and uncertainties The 1 1 measurement ratio can be easily verified or calibrated by interchange measurement tests using two stable standard resistors of same nominal values as illustrated by the block diagram to the right This technique is referred to as self calibration by competitors and w
5. ements where the bridge software optimizes the polarity reversal rate in real time In temperature applications this feature makes it easy to track a fast changing temperature Guildline s 6622T Bridge can make measurements every two seconds which eliminates any concerns that DC Bridges are slower than AC Bridges This measurement time is more than fast enough to track temperature changes In fact a two second measurement rate is much faster than the time required for PRTs and Fixed Points to stabilize Two Internal Buffers are used by the 6622T Series for Temperature Measurements The 6622T Series of Bridges incorporates two independent buffers which dramatically improves thermometry measurements by giving a customer the tools to make educated choices and obtain optimum results When making a measurement the 6622T will begin to collect data in both a Summary and a Detail buffer By watching the summary buffer or graphics display a metrologist can visually see a temperature measurement settle into plateau Once into plateau a user can switch over to the summary data screen and see a Statistical analysis of both the Summary and the Detail buffers which includes the mean and the standard deviation At this point both the summary and detail buffers have identical information However now that the test is settled you can clear the Detail buffer and let it build up a new data set that contains only information taken at the plateau level This will give you a
6. he measurement range of the 6622T Series is from 0 1 Q to 100 kQ There are two models in the 6622T Thermometry Bridge Series providing increasing levels of accurary and are well suited for temperature calibration and research The use of a DCC bridge in thermometry is beneficial as it has inherently better noise immunity to external electromagnetic noise and mechanical disturbance One of the key features of Guildline s Thermometry bridges is that they are verified at the lower currents found in thermometry The 6622T Provides the Widest Range of Temperature Measurement of Any Commercially Available Temperature Bridge Today 6622T Series Measurements are conducted in true four terminal mode so long test leads can be used Since excitation current is DC reactance introduced by the probe and probe leads does not affect measurement accuracy Thermal EMF is eliminated by periodic polarity reversal that is programmable by the user The built in extremely stable current supply permits selection of output currents between 20 uA and 150 mA to satisfy a wide range of sensitivity requirements To account for self heating of an SPRT Root 2 value current can be conveniently chosen from the instrument front panel or via software The 6622T Thermometry Bridge Series has an intuitive internal menu system that addresses temperature requirements without the need for external software or manual calculations The calculation and temperature conve
7. ive to AC Bridges This is based on the underlying direct current comparator technology used for DC Bridges which is not subject to switch contact and other parasitic resistances nor capacitance or inductance effects on the internal measurement components and connection leads The unique architecture of the 6622T Bridge and a control algorithm further removes gain and offset errors in the nanovolt balance detector and the precision toroid The end results are shown by long term accuracy and linearity without the need for routine frequent calibrations Measurements are conducted in true four terminal mode so long test leads can be used Since excitation current is DC reactance introduced by the probe and probe leads does not affect measurement accuracy Immunity to noise is very important because of the electromagnetic noise generated by furnaces and baths that are present in Thermometry Laboratories Finally DC Bridges are not susceptible to temperature variations or warm up times The result is that 6622T DC Thermometry Bridges have much better stability and noise resistance than AC temperature Bridges such as those provided by ASL The model 6622T thermometry bridge can be used in either a fixed or dynamic reversal rate mode of operation In fixed reversal rate mode automatic current polarity reversal is user programmable from 4 seconds to 27 minutes with two measurements per reversal Dynamic reversal rate mode is only available in computerized measur
8. m 1 0 ppm Rx RS MEASUREMENT UNCERTAINTY 3 YEARS 54 Hour 1KO gt R lt 4 8kO BKO gt RA 63kOQ 63KO P R lt 134kQ Optional AABY Base Model 0 4 ppm 0 1 ppm 0 3 ppm Optional XP Model 0 3 ppm 0 1 ppm 0 3 ppm Optional 1 Specifications are based on 20 second reversal rate 100 uW power dissipation in Rx and environment temperature of 23 C 2 C 2 Lowest possible Rx is defined as Rxiow Rs x 08 and Maximum possible Rx is determined by Rx high Rsx 107 5 66271 DCC THERMOMETRY BRIDGE SERIES GENERAL SPECIFICATIONS Measurement Range Q 10 10 0 1 1 100 1 Linearity 0 01 ppm of full scale Full scale defined as 1 1 10 1 and 100 1 Resistance ratio range Display resolution ppm 0 001 ppm Temperature coefficient of resistance ratio measurement 0 01 ppm C of reading 2 s to 1637 s programmable increment of 1 s IEEE 488 2 SCPI Based Usable range 30V compliance A 20 uA 150 mA Automatic current reversal rate in seconds Communication Test current for measurement to 100 KQO Resolution uA 2uA Accuracy error ppm offset A 200 ppm 10 uA 465 D 440 W 200 H mm 27kg Operating 18 28 C 20 50 RH Storage 20 60 C 15 80 RH 100V 120V 220V or 240V 10 50 60Hz 5 200VA Dimensions and weight Environmental Power Requirements WARRANTY 55 Years of Guildline innovation in engineering and design solutions that satisfy real measurement iss
9. orks with all manufacturers thermometry bridges The Thermometry Bridge 1 1 measurement ratio error e in ppm is Ratio R Ratio R2 calculated using the following formula 6 e 1 2 R4 R2 1 10 Non 1 1 measurement ratios such as 10 1 and 100 1 ratios can be easily verified by closure measurement tests using three stable standard resistors as illustrated by the block diagram to the right Bridge non 1 1 measurement ratio error e in ppm is calculated using the following formula 6 Ratio Rc e 1 3 Ra Rp Rc Raq 10 NS Note Resistance values in these block diagrams are only representative values and are selected for the illustration of methodology only Ratio Rb This Multi Ratio capability allows users to extend the calibration interval of the Thermometry Bridge while still maintaining a high level of confidence thus saving thousands of dollars each year in support of the instrument With an annual verification a Guildline 6622T Thermometry Bridge typically can go five years between calibrations 66271 DCC THERMOMETRY BRIDGE SERIES 6622T SERIES SPECIFICATIONS The following tables show the uncertainty contribution of the model 6622T Bridges to the total measurement Because of the wide range of Rx Rs ratios available it is possible to measure UUT s with a variety of Rs standards For example a 10002 UUT could be measured with a 1 O 10 Q or 100 Q reference standard Rs To determine the bridge s contrib
10. r only provide a single fixed preheat current The performance of the 6622T Thermometry Bridge is based on over 55 years of innovation design knowledge and manufacturing experience that Guildline has in building temperature and resistance measurement instruments Over 150 of the 6622 Series Bridges and Measurement systems have been sold world wide in the past ten years Multi Ratio Capability is another Key Feature of Guildline s 6622T Thermometry Bridge Series This feature is not normally found in temperature Bridges There are three key benefits to multi ratio temperature bridges 1 better uncertainties 2 fewer reference resistors as well as using more Decade Values and 3 customer intermediate verification checks of a bridge s calibration Point 1 allows the temperature bridge to measure current changes at the low values typically found with temperature measurements i e 100 Q PRT at 1 mA while maintaining the reference resistor at a higher current level such as a 191 Standard at 100 mA This is important because the reference resistor will have better uncertainties at higher current levels and it is typically calibrated at the higher current level 66271 DCC THERMOMETRY BRIDGE SERIES The following Table shows the impact of multi ratio and the use of decade Resistance Standards as well as the 250 value for Thermometry Applications This table provides examples of the temperature ranges that can be supported by a single stand
11. rsions are done internally via firmware and the results are viewed graphically via the front panel in resistance ratio O C F and K The Bridge menu supports various temperature scales such as the ITS 90 the IPTS 68 and IEC 751 This easy to use front panel greatly reduces an operator s learning curve An IEEE 488 2 communication port is a standard configuration allowing computerized operation 66271 DCC THERMOMETRY BRIDGE SERIES DESIGN AND INNOVATION See what you have been missing The on screen graphical display and associated data buffers can visually track temperature and the realization of fixed points The 6622T is the only thermometry bridge available with this on instrument data and graphics capability which greatly simplifies tracking temperature changes and monitoring fixed point realization The comprehensive menu allows users to view the measurement data in either graphical or text format The last 1000 entries are kept in the 6622T s memory and individual entries can be examined A user can either view the present measurement result a Summary detailing the Minimum Maximum Average Standard Deviation or the Graphic Trace of the measurement Every effort has been taken in the 6622T Thermometry Bridge design to reduce noise and error Thermal EMF effects are eliminated by automatic current reversal DC Bridges like the 6622T have inherently better immunity to external electromagnetic and mechanical noise relat
12. tely automate setup control measurements and measurement reporting and is provided free with each 6622T thermometry bridge BridgeWorks software is extremely powerful yet straight forward and user friendly The software comes with all useful and convenient features found in commonly used window based commercial software programs On line context help is available to provide added assistance in understanding the functions of the software BridgeWorks is developed in LabVIEWO offering direct compatibility with all National Instruments GPIB interfaces These interfaces come in a wide variety of connection options to your PC such as USB FireWire Ethernet PCI PCMCIA RS232 485 and more Additionally utilities reside within the software to enhance and simplify the calibration of SPRT s and PRT s When the 6622T Thermometry Bridge is used with Guildline s unique 3210 Thermometry Auto Switch with Programmable Pre Heat functionality the software can turn the bridge into a EMW EE EET x multiple channel calibration and measurement system Scanner Setup Edit Scanner Channel No 1 Timed sequenced or scheduled single or multiple tests can fem Documentssszszsape be initiated while the bridge is unattended Test Setup Edt TestNo o 3 All user definable test variables such as excitation current F m F T Rx Channel 1 dto Rs Channel 4 at 1 000 m in Normal Ohms with th AR reversal rate etc can be programmed on a per
13. test basis m 2 ere ey EES grinor E ts eee lt a oI ori This Reversal Rate is e 20 s o Minimum with Auto Reversal Rate set to Tracking at a Threshold of o 0 000 ppm giving the users full control and flexibility in conducting ee ae A A y 9 top the test if a Target Deviation of J 0 0000 ppm over a J 0 sample Window or at the J 300 Sample Limit well designed experiments For a complete automated temperature measuring system a 6622T bridge can be Stat Process A yo ee ere ener i at FIOCESS rin r seconds fom now with 4 between iest Velay of s used with Guildline s 3210 Thermometry Auto Switch and ak a 0 i a J 1 seconde from now wih a Between Test Delay of J aig 6634A Temperature Stabilized Resistance eee andard BridgeWorks software offers many routine thermometry functions such as SPRT calibrations to ITS 90 scale It also provides comprehensive graphic display math functions and trend analysis Data can be easily exported to MS Excel Crystal Reports and in HTML format All reports generated conform to traceability requirements of ISO 17025 The optional 3210 Thermometry Adaptor with pre heat enables multiple Resistance Temperature Devices to be calibrated at the same time along with providing programmable pre heat capability The Guildline SPRT Adaptor is the only scanner adaptor that can provide programmed pre heat currents on a per channel basis Other manufacturers do not have pre heat capability o
14. ues and outstanding craftsmanship and we offer an industry leading 2 Year Warranty to show you our confidence The 6622T Thermometry Bridges come with a 2 year warranty at no extra cost SERVICE AND SUPPORT We have the widest range of resistance accredited from 0 1 uQ all the way to 10 PQ Whether you own a Guildline product and have other manufacturer s standards call today and see what we can do for you ORDERING INFORMATION GUILDZ E IS DISTRIBUTED BY Model Description 6622T B 6622T XP 6622A 09 RC RT SM6622T 3210 Bridgeworks UPG Controller IEEE USB IEEE 2m 6634A X 6664C 6664A 11 6664A 12 SCW 18 30 Base Thermometry Bridge 0 1 ppm best uncertainty Base Thermometry Bridge 0 05ppm best uncertainty Rack Mount Kit Report of Calibration Available at Nominal Charge Specifies Rear Terminals versus Front Terminals Default Service Manual Extra Charge 6622T SERIES OPTIONS 8 Channel Thermometry Adapter with Pre Heat Upgrades Bridgeworks T to Bridgeworks C Controller Computer System with IEEE and Software Integrated NI IEEE 488 2 Interface for a USB Win 98 NT ME 2K XP NI IEEE 488 2 Interface cable 2m double shielded Temperature Stabilized Resistance Standard for 6622T Series 8 or 16 Channel 2 Amp Low Thermal Scanners SCW Lead pair with gold plated banana plug 1m in length SCW Lead pair with gold plated banana plugs 2m in length 30 Meters Shielded Copper Low Thermal Wire 18 Gauge Many other
15. ution to measurement uncertainty simply look at the Rs you are using and go to the appropriate UUT range The base model 6622T Bridge has a best uncertainty of 0 1 ppm that is equivalent to 25 uK for a 25 50 SPRT at 0 C measured against a 250 reference resistor The 6622T XP Bridge has a best uncertainty of 0 05 ppm 13 LK RX RS MEASUREMENT UNCERTAINTY 3 YEARS 24 Hour 0 080 gt R 4080 08OPRA63QA 630P R 41340 1340 R 410750 1Y Base Model 0 4 ppm 0 1 ppm 0 1 ppm 0 2 ppm XP Model 0 3 ppm 0 05 ppm 0 05 ppm 0 1 ppm RX RS MEASUREMENT UNCERTAINTY 3 YEARS J kioui 0 080 PR 4080 OBOP R 4630 63OR413440 1340P R 410750 NY Base Model 0 4 ppm 0 1 ppm 0 1 ppm 0 2 ppm lt 0 04 ppm XP Model 0 3 ppm 0 05 ppm 0 05 ppm 0 1 ppm RX RS MEASUREMENT UNCERTAINTY 3 YEARS Jour 250 R4200 200 R 4157 50 157 50 gt R 43350 3350 gt R 426870 PNY Base Model 0 4 ppm 0 1 ppm 0 1 ppm 0 2 ppm lt 0 04 ppm XP Model 0 3 ppm 0 05 ppm 0 05 ppm 0 1 ppm RX RS MEASUREMENT UNCERTAINTY 3 YEARS zkou 100 R 4800 800 R 46300 6300P R 413402 1 34kO gt R lt 10 75KQ PY Base Model 0 4 ppm 0 1 ppm 0 1 ppm 0 4 ppm XP Model 0 3 ppm 0 05 ppm 0 05 ppm 0 2 ppm RX RS MEASUREMENT UNCERTAINTY 3 YEARS A 1000 gt R A8000 8000 P R 46 3kQ 6 3K P Re 4 13 4kQ 13 4KO P Re lt 4 107 5kQ PNY Base Model 0 4 ppm 0 1 ppm 0 1 ppm 1 0 ppm XP Model 0 3 ppm 0 1 ppm 0 1 pp
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