Page 1 Introduction Thank you for choosing the nVision Reference Pressure Recorder from Crystal Engineering Corpo- ration. Your nVision is a combination of leading edge technology and rugged industrial design. Accuracy is up to 0.025 percent of reading - so any nVision can typically replace several gauges or calibrators you may have been using.
Page 2 • Crystal Engineering Corporation Quick.Start.Instructions Power Icon Key - nVision Reference Recorder Icon 100% 0%** External Power Description (USB) Power Remaining **Replace Batteries or connect to USB Power Power Icon Key - nVision Lab Reference Icon External Power...
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Operation Manual • Page 3 nVision Reference Recorder shown. All instructions on this spread are also applicable to nVision Lab Reference This icon represents a component that can be modified with CrystalControl software Upper Module Bay Setup Button: Locate additional features: •...
nVision Operation Manual • Page 5 Graphical.Display.Overview Graphical.Upper.and.Lower.Module.screens Upper Module Screen Date and Time Stamping Lower Module Screen Graphical.Dual.Mode.Screen.(Both.Sensors) Dual Module Screen (Both Sensors) Test safely with live readings annunciated regardless of cursor location or zoom level Date and Time Stamping Navigating.the.Graphical.Display In the graphical modes the nVision navipad enables you to control how you view your data.
Crystal Engineering Corporation Operating.Instructions The nVision reference recorder is designed to be robust and easy to use. The following is further detail on the functionality of the product that may already be summarized in the Quick Start Instructions above. The main button features, clock-wise are: .Home.button...
nVision Operation Manual • Page 7 Settings Display contrast Settings can be adjusted in the menu item. This allows you to optimize your nVision viewing experience to your ambient lighting conditions and backlight needs. When Contrast Adjust select is highlighted, use your right/left arrows to adjust and press to capture the new setting.
Page 8 • Crystal Engineering Corporation Recording Start Stop Recording You may a run from the menu item. Never remove power (either battery or USB power) when Recording. CAUTION: Additionally you may Erase All Runs in order to effectively manage the 500,000 data point memory capacity of the nVision.
nVision Operation Manual • Page 9 Elapsed recording time to fill memory Recording Rate (Set in CrystalControl ) (500,000 data points with two modules) 10 readings per second Approximately 14 hours capacity Approximately 140 hours capacity 1 reading per second (or approximately 6 days) Approximately 8300 hours 1 reading per minute...
Page 10 • Crystal Engineering Corporation .Backlight.button.(. Pressing the backlight button instantly illuminates the display for a duration set by CrystalControl. The default duration is 15 seconds and can be custom set all the way up to never timing out. Battery life is affected by backlight use.
nVision Operation Manual • Page 11 Upper Module Numerical Screen If you desire to view both the upper and lower numerical displays simultaneously, the dual view is also possible (shown with battery capacity at 100%). Dual Module Numerical Screen Peak Detection and Filter On the nVision, you may view the peak high (Hi), peak low (Lo), and filter (Filter) readings on the numerical displays.
Page 12 • Crystal Engineering Corporation Numerical.Display.Screen.(Differential.Mode) The nVision will automatically display an additional differential screen if two similar module types are installed at the same time. An example of this would be two pressure modules (PM) or two RTD100 modules installed simultaneously. In the case of the pressure modules (PM), this mode does not require them to be the same full scale range.
nVision Operation Manual • Page 13 Graphical.Screens.(Live.Recording,.or.Last.Recorded.Data) The nVision graphical screens allow you to view live recording last recorded data utilizing the advanced viewing capabilities of the nVision display. Like the numerical screens, the border of the graphical screens wraps around the display with a bias towards the module under test.
Page 14 • Crystal Engineering Corporation Viewing.Graphical.Screen.Data.in.Detail (Live.Recording,.or.Last.Recorded.Data) Complete.Data.Run.Viewing When viewing the nVision graphical display screens the live recording data streams into the viewing window from the right hand side of the display. Therefore, live recording data will always appear on the far right hand edge of the display when you are viewing the complete recording session.
Do not remove or change the batteries in a hazardous atmosphere. WARNING: Extending.Battery.Life Note that the nVision reference recorder has many customizable battery saving features avail- able to you to for optimization in CrystalControl. You may extend battery life substantially by slowing down your Logging Interval (recording rate) and reducing the Automatic Shutoff and Backlight Shutoff times.
Page 16 • Crystal Engineering Corporation USB.power.indication.(. The USB connected/powered icon will become active when connected. The mini USB B connec- tion will power the nVision with and without the battery pack installed. Since the power module consists of alkaline AA batteries, they will not be recharged by the USB device.
• Page 17 Pressure.(PM).Module.Instructions CPF.Pressure.Fitting Crystal CPF System: Medium Pressure Female (MPF) (1/4” medium pressure tube system with 7/16-20 threads). See Crystal Engineering’s CPF Brochure for further information. CPF o-ring size and material: AS568A-012, Viton 90 durometer (P/N 3981). CAUTION: To achieve CPF maximum allowable working pressures no o-ring substitutions are allowed.
Page 18 • Crystal Engineering Corporation Current,.Voltage,.and.Switch.Test.(MA20).Module.Instructions The nVision MA20 module has three operational modes: current measurement, voltage mea- surement, and switch test. Each mode may be selected via the Setup menu, and can only be operated one at a time.
nVision Operation Manual • Page 19 Current.Mode The nVision is capable of measuring current in two different modes. They are: • mA: Measured current is displayed (mA). The module is capable of measuring inputs up to 25mA • 4–20%: Current is displayed as a percentage of the 4–20mA current range of the module. Where: 4mA = 0%, and 20mA = 100% Both current modes are available for use if current is measured in the standard or HART connection schemes.
Page 20 • Crystal Engineering Corporation Voltage.Mode The nVision may be used to measure voltages up to 28VDC. Select the Voltage mode through the Setup menu to properly configure the nVision prior to con- nection and use. The illustration denotes the proper Voltage connection scheme to the MA20 module.
nVision Operation Manual • Page 21 Connecting.your.RTD.to.the.RTD100.Module Your nVision RTD100 module has been shipped with an IP67 rated, M8 connector (P/N: 3953). The terminal block based connector allows you to attach your RTD sensor for 2-, 3-, or 4-wire connec- tions.
Leak check to ensure water tight seal. If any leaking occurs, rework and lubricate as necessary. If leak-free, your RTD sensor is ready to use with the nVision Reference Recorder. a Note: Your nVision has the RTD100 module TCR set to Pt100 (385) Euro. Modify this setting in CrystalControl if required.
nVision Operation Manual • Page 23 Platinum RTD sensor element types have the following general feature set: nVision (TCR) Sensitivity Temperature Base Element Temp. Coefficient TCR (Ω/Ω/ºC) (avg. Ω/ºC, Range Resistance of Resistance 0 to 100 ºC) -200ºC to 850ºC Platinum Pt100 (385) Euro 100Ω...
Crystal Engineering recommends combining system expanded uncertainties in accordance with recommendations out- lined in ISO “Guide to Expression of Uncertainty in Measurement (GUM). The uncertainties typically reported by Crystal Engineering represent expanded uncertainties using a coverage factor k=2 to approximate a 95% confidence level. The typical method of combining uncertainties is the root sum squares of the individual contributing uncertainties and will be calculated as such for the example shown.
nVision Operation Manual • Page 25 2-,.3-,.or.4-Wire.Measurements In order to measure temperature, the RTD sensing element must be connected through the IP67 rated, M8 connector (P/N 3953) provided with your RTD100 module. Since the temperature measurement is based on the sensing element resistance, any other resistance in the system (lead wire, connections, etc) may be added to the measurement circuit and will result in mea- surement error.
Page 26 • Crystal Engineering Corporation Differential.Mode.(Pressure.and.Temperature) Upper,.Lower,.Tare.and.Differential.Reading The Differential Mode screen has several key features that will help you take quality pressure and temperature measurements. ∆P can be measured if your nVision is populated with two PM modules. Conversely, ∆T can be measured if your nVision is populated with two RTD100 modules.
The total nVision Reference Calibrator measurement uncertainty in the ∆P mode configuration will need to consider the uncertainties of both pressure modules. Crystal Engineering recom- mends the module uncertainties to be combined with the preferred square root of the sum of the squares (or “root sum squares”) method.
Page 28 • Crystal Engineering Corporation Measurement.Uncertainties.for.two.Temperature.(RTD100).Modules.without.Tare The RTD100 module is capable of both temperature and resistance measurements. The resis- tance measurement uncertainty can be calculated by combining the uncertainties of the two Resistance measurements. The following table describes the combined uncertainty of two RTD100 Module resistance measurements.
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Before using the nVision to record, using button menu items. nVision is now ready to use. If you have any problems during this process, check the Troubleshooting section for relevant information or contact Crystal Engineering at www.crystalengineering.net or (805) 595-5477.
Page 30 • Crystal Engineering Corporation nVision.Application.Specific.Test.Strategies. The nVision may be used for the following typical test applications. Transmitter.Calibration.(Pressure.versus.Current) The nVision is capable of calibrating a pressure transmitter: Modules Required: PM (Pressure) and MA20 (Current & Voltage). Determine if HART transmitter is present.
nVision Operation Manual • Page 31 HART.Transmitter.Calibration.(Pressure.versus.Current) The nVision is capable of calibrating a pressure transmitter: Modules Required: PM (Pressure) and MA20 (Current & Voltage). Determine if HART transmitter is present. If not, then proceed to Transmitter Calibration (Pressure versus Current) section. Select desired Current mode (mA, or % 4 –...
Page 32 • Crystal Engineering Corporation Transmitter.Calibration.(Pressure.versus.Voltage) The nVision is capable of calibrating a pressure transmitter: Modules Required: PM (Pressure) and MA20 (Current & Voltage). Select the Voltage mode using the Setup button. Change the nVision to the Dual Numerical Screen or any other preferred screen view.
nVision Operation Manual • Page 33 Differential.Pressure.(Pressure.versus.Pressure) The nVision is capable of measuring differential pressures: Modules Required: Two pressure modules Note that you do not need the same pressure ranges on the two pressure modules but this will affect your calculated system uncertainty. Validate that both pressure modules have a pressure rating exceeding your static line pressure.
Factory service offers benefits you won’t find anywhere else. We have the A2LA accredited Calibration Laboratory facilities to test your nVision Reference Recorder at a variety of tempera- tures utilizing NIST traceable standards, resulting in calibration certificates that provide per- formance data over temperature.
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• Page 35 Although we prefer that you return the nVision to Crystal Engineering for calibration, ordinary recertification and/or adjustments may be performed by any qualified personnel with appropri- ate training and equipment. The following instructions are ONLY intended for such qualified personnel with appropriate test equipment.
Page 40 • Crystal Engineering Corporation nVision.Serial.Numbers Serial.Number.Location Each product has a maximum of three serial numbers, one for the chassis and each of the modules (upper and lower). Chassis serial numbers are located in the power bay or on the rear of the product in the case of the Lab Reference.
Finger-tight: 316 Stainless Steel and Viton (internal MPF o-ring) Connection Crystal CPF System: Medium Pressure Female (MPF) (1/4” medium pressure tube system with 7/16-20 threads). See Crystal Engineering’s CPF Brochure for further information. CPF o-ring size and material: AS568A-012, Viton 90 durometer.
Page 42 • Crystal Engineering Corporation User.Defined.Units nVision gives you the ability to create your own custom User Defined Unit based on pressure. Implement your slope (user factor) and offset (offset factor) in CrystalControl. See CrystalControl application and manual for details.
nVision Operation Manual • Page 45 Current.(mA).Input Accuracy ±(0.015% of reading + 0.002mA) Ranges,.Resolutions.and.Units Range ......0 to 25mA Max Allowable Current .
Page 46 • Crystal Engineering Corporation Temperature.Module.(RTD100).Specifications Accuracy 0% to 100% of Full Scale ..±(0.015% of reading + 0.02Ω) Ranges,.Resolutions.and.Units Range 0 to 400Ω for use with 100Ω PRT (platinum resistance temperature detectors) ... .
(1 reading per second recording, auto shutoff 20 minutes). Settings such as Auto Shutoff, Logging Interval, and Backlight Shutoff greatly vary battery life. The nVision screen display has the following power icon states: Power Icon Key - nVision Reference Recorder Icon 100% 0%**...
Certifications The nVision has been tested and certified to comply with a variety of international standards. Crystal Engineering declares that the nVision is in accordance with the Electromagnetic Com- patibility Directive and the Pressure Equipment Directive per our declaration(s).
Lab Reference. EC Declaration of Conformity Issued in accordance with the ATEX Directive 94/9/EC Manufacturer: Crystal Engineering Corporation is in conformity with the provisions of the Directive 94/9/EC for use in potentially explosive atmospheres Marking: II 1 G Ex ia IIB T4 Ga, Ta = -20C to 50C, Rayovac Max Plus 815...
200 bar (2 900 psig) on Maximum Allowable Pressure (PS) Class 1 & 2 gases or liquids, Crystal Engineering > 200 bar (2 900 psig), maintains a technical file in accordance with Annex III, and <...
Operation Manual • Page 51 EMC.EC.Declarations.of.Conformity.-.nVision.Reference.Recorder EC Declaration of Conformity I/We Crystal Engineering Corporation 708 Fiero Lane, Suite 9 San Luis Obispo, CA, 93401 declare that nVision Series Reference Pressure Recorder In accordance with the following directives 2004/108/EC The Electromagnetic Compatibility Directive per:...
Page 52 • Crystal Engineering Corporation Software CrystalControl.Configuration.Software Unleash the power of the nVision with CrystalControl. Customize your nVision chassis with the software’s ‘Config’ capabilities in such areas as managing passwords, message stores, automatic shutoff and backlight timers, logging interval, and more via the mini USB B interface. Also tailor your module’s performance in such areas as disable unwanted units, create user defined unit...
nVision Operation Manual • Page 53 ATEX.Safety.Instructions Note: These approvals do not apply to the nVision Lab Reference. Bezpečnostní.instrukce.pro.prostředí.s.nebezpečím.výbuchu.–. ČESKY (Czech) • V prostředí s nebezpečím výbuchu nepoužívejte přípojku USB. • Baterie vyměňujte pouze v bezpečném prostředí. Používejte pouze schválené baterie. •...
Page 54 • Crystal Engineering Corporation Safety.Instructions.for.Hazardous.Locations.–. ENGLISH (English) • Do not use the USB connector in a hazardous location. • Replace batteries in non-hazardous locations, with approved batteries, only. • It is the users responsibility to understand the proper application of this product in potentially explo- sive atmospheres.
nVision Operation Manual • Page 55 Piles.approuvées.–. FRANÇAIS (French) Le nVision est un système à sécurité Intrinsèque seulement s’il est alimenté par un des Piles de type suiv- ant: Beaucoup d’autres types et modèles de Piles ont été examinés mais ne conviennent pas pour répon- dre aux conditions de sécurité...
Page 56 • Crystal Engineering Corporation Batterijen.welke.zijn.goedgekeurd.–. NEDERLANDS.(Dutch) De nVision is alleen intrinsiek veilig bij gebruik van de volgende batterijen: Bij gebruik van andere niet gecertificeerde batterijen vervalt de intrinsiek veilige ATEX certificering. Een aantal andere batterij merken en types zijn getest maar voldeden niet aan de ATEX voorwaarden voor intrinsieke veiligheid, U mag er daarom niet van uitgaan dat andere equivalente types wel geschikt zullen zijn.
nVision Operation Manual • Page 57 Räjähdysvaarallisten.tilojen.turvallisuusohjeita.– .SUOMEN.KIELI.(Finnish) • USB väylää/liitintä EI saa käyttää räjähdysvaarallisissa tiloissa. • USB väylää/liitintä EI saa käyttää räjähdysvaarallisissa tiloissa. Käytettävä ehdottomasti ja ainoastaan hyväksyttyjä paristoja. • Käyttäjän vastuulla on laitteen käyttö räjähdysvaarallisissa tiloissa. Mittausovellus ja käyttöympäristö on ehdottomasti selvitettävä ennen käyttöä. Käyttöön.hyväksytyt.paristot –...
Page 58 • Crystal Engineering Corporation Non-repeatability.of.pressure.measurements When checking the gauge against a hydraulic deadweight, increasing pressure measurements do not match decreasing pressure measurements. Reason: As in the previous note, gas has dissolved into the hydraulic fluid. When decreasing the pressure, the dissolved gas then leaves the fluid, but at an uneven rate, so small pressure differential (due to fluid head pressure) may exist between the reference deadweight and the gauge being tested.
Duracell® ......Duracell Inc. Corporation Energizer® and Eveready ... Eveready Battery Company, Inc. “Pressure is Our Business” is a registered trademark of Crystal Engineering Corp. Service.and.Support How.to.Contact.Us:...
Crystal Engineering will, at our option, repair or replace the defective device free of charge and the device will be returned, transportation prepaid. However, if we determine the fail- ure was caused by misuse, alteration, accident or abnormal condition of operation, you will be billed for the repair.
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