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Crystal nVision Reference Pressure Recorder

Posted on March 5, 2012 in

Reference Pressure Recorder

Accurate enough to replace a deadweight tester Rugged enough to sit in 3 feet of water Portable enough to complete calibrations anywhere

  • Gauge / Absolute Pressure Datalogger to  15 000 psi / 1000 bar / 100MPa
  • Differential Pressure with up to 0.025% of reading accuracy
  • Switch, Voltage, Current, and Temperature
  • 500,000 data points – 10 readings per second from 2 modules
  • Uses our new CPF hose and fitting system for fast, leak-free connections
  • Displays live data graphically – no PC required
  • Connects to a PC to view live readings or export to tamper-proof digital records
  • Compensates accuracy for temperature effects from -20 to 50°C
  • Includes a calibration certificate with test data at five different temperatures from an A2LA accredited laboratory

Do you rely on a chart recorder for plotting pressure changes over time? Crystal has a better solution for you. Its nVision reference recorder collects and stores up to 1 million data points at intervals of up to 10 per second. The information is stored in non-volatile memory, protecting it from power loss. And the battery runs for up to one year in ultra-low power mode.

You can read more about the nVision’s durability, accuracy, and reliability in the latest application note published by Crystal.

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Description

Specifications

*Not recommended for oxygen service

Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
All models indicate vacuum, but vacuum specification (typical) applies to 30 PSI, 100PSI, and 300PSI models only.
Not recommended for continuous use below -14.5 PSI. Refer to the XP2i-DP data sheet for gauges that are intended for continuous high vacuum use.

 

psi (Gauge Pressure) bar (Gauge Pressure)
30, 100, and 300 psi modules 3, 10, and 30 bar modules
0 to 30% of Range: ± (0.0075% of Full Scale) 0 to 30% of Range: ± (0.0075% of Full Scale)
30 to 110% of Range: ± (0.025% of Reading) 30 to 110% of Range: ± (0.025% of Reading)
Vacuum ± (0.06 of Full Scale*, typical) Vacuum ± (0.06 of Full Scale*, typical)
* Full Scale = -14.5 PSI * Full Scale = -14.5 PSI
1000 and 3000 psi modules 100 and 300 bar modules
0 to 30% of Range: ± (0.015% of Full Scale) 0 to 30% of Range: ± (0.015% of Full Scale)
30 to 110% of Range: ± (0.05% of Reading) 30 to 110% of Range: ± (0.05% of Reading)
10 000 and 15 000 psi modules 700 and 1000 bar modules
0 to 30% of Range: ± (0.03% of Full Scale) 0 to 30% of Range: ± (0.03% of Full Scale)
30 to 110% of Range: ± (0.1% of Reading) 30 to 110% of Range: ± (0.1% of Reading)

 

 

psiA (Pressure with BARO module) barA (Pressure with BARO module)
30 psi module 3 bar module
0.200 to 14.500: ± 0.011 psiA, typical 0.0138 to 1.0000: ± 0.0008 barA, typical
14.5000 to 44.500: ± (0.025% of Reading) + 0.003 psiA 1.0000 to 4.0000: ± (0.025% of Reading) + 0.0003 barA
100 psi module 10 bar module
0.200 to 14.500: ± 0.011 psiA, typical 0.0138 to 1.0000: ± 0.0008 barA, typical
14.500 to 44.500: ± 0.011 psiA 1.0000 to 4.0000: ± 0.0010 barA
44.500 to 114.500: ± (0.025% of Reading) 4.0000 to 11.0000: ± (0.025% of Reading)
300 psi module 30 bar module
0.20 to 14.50: ± 0.01 psiA, typical 0.014 to 1.000: ± 0.001 barA, typical
14.50 to 104.50: ± 0.03 psiA 1.000 to 10.000: ± 0.003 barA
104.50 to 314.50: ± (0.025% of Reading) 10.000 to 31.000: ± (0.025% of Reading)
1000 psi module 100 bar module
14.5 to 314.5: ± 0.2 psiA 1.000 to 31.000: ± 0.015 barA
314.5 to 1014.5: ± (0.05% of Reading) 31.000 to 101.000: ± (0.05% of Reading)
3000 psi module 300 bar module
14.5 to 914.5: ± 0.5 psiA 1.00 to 91.00: ± 0.05 barA
914.5 to 3014.5: ± (0.05% of Reading) 91.00 to 301.00: ± (0.05% of Reading)
10 000 psi module 700 bar module
15 to 3015: ± 3 psiA 1.00 to 211.00: ± 0.21 barA
3015 to 10 015: ± (0.1% of Reading) 211.00 to 701.00: ± (0.1% of Reading)
15 000 psi module 1000 bar module
15 to 4515: ± 5 psiA 1.00 to 301.00: ± 0.30 barA
4515 to 15 015: ± (0.1% of Reading) 301.00 to 1001.00: ± (0.1% of Reading)

 

The tare function can improve measurement uncertainties on two modules with the same full scale pressure range installed into one nVision Reference Recorder. Requires the use of an equalizing valve.
The following specifications apply to the measurement system with a logging interval of 1 second/reading:

 

Wetted Materials: 316 stainless steel* *Wrench tight. Finger tight also includes Viton o-ring.
Diaphragm Seal Fluid: Dow Corning 200 All welded, with a permanently filled diaphragm seal.
Connection: Crystal CPF Female Metal/Metal cone seal; O-ring can be removed.
  CPF adapters to NPT, BSP, and M20 available.
  1/4″ medium pressure tube system compatible with HiP LM4 and LF4 Series, Autoclave Engr SF250CX Male and Female Series.

 

 

Accuracy: ± 0.00725 psi, ± 0.5 mbar Other units available depending on the installed modules.
Range: 10.153 to 15.954 psiA, 700.0 to 1100.0 mbarA Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
Units and Resolution: psi……….0.001 inHg………0.001 mmHg……0.01 mbar……..0.1 Exposure to environmental extremes of temperature, shock, and/or vibration may warrant a more frequent recertification period.
Pressure Connection: 5.8 mm OD cylindrical fitting A flexible 4.8 mm [3/16″] ID tube is recommended to connect for calibration.
Mounting: 3/8″ 4-40 plastic screw

 

 

Voltage (VDC) Input
Accuracy: ± (0.015% of rdg + 0.002 VDC) Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
Range: 0 to 28 VDC
Max Allowable Voltage: 30 VDC
Resolution: 0.001 VDC
Units: VDC

 

Current (mA) Input
Accuracy: ± (0.015% of rdg + 0.002 mA) Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
Range: 0 to 55 mA (MA20+) 0 to 25 mA (MA20) WARNING: ATEX and IECEx certification does not allow the installation of two MA20 modules
Max Allowable Current: 93.3 mA Inputs protected by a resettable fuse.
Resolution: 0.001 mA or 0.01% mA can be displayed as a percentage, where 0 to 100% corresponds to either 4 to 20 mA or 10 to 50mA.
Units: mA, % 4-20, % 10-50 Jacks are compatible with safety sheathed banana plugs.
Input Resistance: < 17.2 Ω
Volt. Burden @ 20 mA: < 0.35 V
Volt. Burden @ 50 mA: < 0.86 V
HART Resistance: 250 Ω
Connection: 2mm jacks

 

 

Switch Test
Switch Type: Dry Contact Switch state change indicated by bright green LED flash.
Closed Resistance: < 10 Ω
Open Resistance: > 10 MΩ Switch test screen reports switch open, close, and deadband values.

 

WARNING: Never install two MA20 modules simultaneously. This may permanently damage your nVision

 

Resistance Input
Accuracy: ± (0.015% of rdg + 0.02 Ω) Includes all effects of linearity, hysteresis, repeatability, temperature, and stability for one year.
Range: 0 to 400 Ω Range is for use with 100 Ω PRTs
Resolution: 0.01 on all scales
Units: °C,K,°F,R,Ω
TCRs: 0.003850, 0.003911, or 0.003926
Wiring: 2-,3-,4-wire support
Connection: M8 connector cable or terminal block

 

 

 

Temperature Range: -20 to 50°C (-4 to 122°F) <95% RH, non-condensing. No change in accuracy over operating temperature range.
  Applies to all modules.

 

Screen: 255 x 160 pixel graphical display Sunlight readable LCD with integrated backlight.
Display Rate: 4 rdgs/sec (std) up to 10 rdgs/sec (recording)

4 x AA: 200 hours, typical Uses 4 alkaline AA (LR6) batteries. Use of backlight reduces operating time.
Ultra Low Power: 30 days, typical* *2 installed modules, 1 reading per 5 minute recording interval with Auto Shutoff enabled and 23°C ambient temperature.
Approved Batteries: see datasheet WARNING: Do not use USB in a hazardous atmosphere

Digital Interface: mini-USB The mini USB will power the nVision with or without the battery pack installed.

Capacity: Approx. 1,000,000 data points* *Datapoint count reference applies to single sensor use (with no BARO module).
Storage Type: Non-volatile flash memory Software available here.
Fastest Interval: 10 per second
Slowest Interval: 1 per hour Compatible with 32 & 64 bit Windows 7 and Vista, and XP (32 bit only). Produces csv, xls, pdf, or signed pdf files, and uses Excel template files (samples included) to automatically format and graph data.

Weight: 680 g (24.0 ox) Weight includes one pressure module, one RTD module, 4AA battery module, and protective boot.
Rating: IP67 Submersible to 1 m for 30 minutes [IEC 60529].
Housing: Impact resistant injection molded LCD protected from impact damage by 1.5 mm (0.06″) thick polycarbonate lens.
Keypad & Labels: UV Resistant Polyester Skydrol compatible.
Mounting: M4 x 0.7 [8 mm (0.31″)] deep threaded insert mounting locations

Temperature Range: -40 to 75°C (-40 to 167°F) Batteries should be removed if stored for more than one month.

II 1G Ex ia IIB T4 Ga or T3 SIRA 09ATEX2008X
This product conforms to: EN 60079-0:2006 | EN 60079-11:2007 | EN 60079-26:2007

 

Ex ia IIB T4 Ga or T3 IECEx SIR09.0053X
This product conforms to: IEC 60079-0:2004 | IEC 60079-11:2006 | IEC 60079-26:2006

 

 

Product ID — Power — Module: Upper — Module: Lower BARO Module?
NV 4AA _____ _____ _____
PM PM No: (omit)
MA20 MA20 Yes: -BARO
RTD100 RTD100
SAMPLE PART NUMBERS  
NV-4AA-30PSI-3KPSI-BARO nVision with 30 PSI pressure module (upper) and 3000 PSI pressure module (lower) with BARO module option.
NV-4AA-RTD100-10KPSI nVision with RTD100 temperature module (upper) and 10 000 PSI pressure module (lower).

 

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