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| Digital Flow Calibrator |
The Digital Flow Calibrator combines the simplicity & versatility of a soap film bubble meter with the speed and accuracy of a microprocessor. With hands free operation, you can still see the bubble, but you also have precision of a digital display with accuracy of a quartz clock. No more tedious bubble formation, bubble watching, timing & flow-rate time calculation. The
DFC-1 accurately calibrates air sampling pumps (vacuum or pressure), rotameters, orifices etc. quickly & reliably with accurate & reproducible results.
FEATURES
| • Primary Standard |
• Multi Function Self Diagnostic for Error free Operation |
| • Flow Accuracy ±2% |
• Automatic Bubble-Feed for hands-free Operation |
| • Wide Measuring Range |
• Adjustable Glass Flow Cell for faster results at low flows |
| • Tracks Multiple Bubbles |
• Measures flow from pressure or Vacuum Source |
| • Auto - Ranging |
• Field Replaceable Glass-Flow Cell |
| • Single or Average Mode |
• Run or Hold Mode |
| • Fully Portable |
• Mains or Battery Operated |
| • Auto Shut-off |
• Optional Portable Printer for Permanent Records. |
PRINCIPLE OF OPERATION : The DFC-1 gas flow calibrator operates on the principle of traditional soap film flow meter which has been automated with the use of high technology infrared sensors, quartz timing & microprocessor intelligence to provide instant digital read out of gas flow rates. A soap bubble is used to trace the gas flow through a fixed volume high precision glass flow-cell. When the liquid soap bubble passes through the first sensor, it activates a quartz timer, which stops when the soap bubble passes through the second sensor. The microprocessor then calculates the flow rate & instantly displays it on a liquid crystal display.
SPECIFICATIONS :
Measuring Range : 1.0 cc/min to 5.00 Ipm with Auto Ranging facility to cover full scale range of 199.9 ml/min., 1999 ml/min., & 5.00 Ipm.
Display : 3½ digit Liquid Crystal Display with additional indication of LOW-BAT and various Self-Diagnostic System-Errors.
Function : ON RESET - Key to reactivate the system after Auto-Shutoff (in 2 minutes when not in use)
MULTI SINGLE - Modes to effect the measurement continuously for multiple bubble or to limit it to the first bubble.
AVERAGE - Mode to average the last four readings.
Accuracy : ± 2010 of Reading
Flow Cell : Precision, Small-Volume Glass flow cell that is vertically adjustable to provide faster results for Low-Flow applications. It also accepts any type of soap solution. However for higher flow measurement, we recommend our standard solution.
Automatic Bubble : This innovative bubble formation mechanism provides adjustable and continuous stream Formation of bubbles for hands free operation. A large reservoir of soap solution provides long uninterrupted operation without cumbersome process of re-filling after every few minutes.
Power :
• Mains Operated Model - 230 V AC
• Battery Operated Model - 6 V Dry Cell or
• ON indication on Front Panel. Rechargeable batteries Optional at extra charge.
Dimensions : 20 (W) x 15 (D) x 23 (H) cms.
Printer : Optional Impact type, Numeric or Alpha-numeric compact, Portable Printer for permanent record.
Carrying Case : Optional corrosion resistant carrying case to accommodate, DFM-1, soap solution, printer & battery charger.
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| Digital Pressure Calibrator |
Microprocessor Based Digital Pressure Meter/Calibrator, with excellent Accuracy & Repeatability in measurement of Pressure Using highly stable Temperature Compensated Pressure sensors with Microprocessor Technology and Software. This Precision Pressure Meter/Calibrator provides many operational features such as any Selectable Pressure Unit, Auto Zero function, Peak Hold Mode etc. All Meters/Calibrators are provided with calibration reports traceable to IDEMI.
FEATURES :
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• Selectable Engg. Unit From 11 common Pressure Unit mm/inches of WC/Hg, Kg/cm2, Psi, mbar, Bar, Kpa.
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• Automatic Zero Adjustment & Self Test
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• Selected Unit Remains in Memory
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• Peak Hold Mode with a Key
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• Highly Accurate ± 0.1 % of FS.
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• Overload Indication (i.e. Range Exceedancy)
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• 32 Character Alphanumeric LCD (with Backlight Option).
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• Digital Averaging.
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• Re-calibration & Linearization by Keys.
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• High Resolution with 4½ Digits
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• Hand Held or Table Top Model
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• Display
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SPECIFICATIONS :
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Display
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16 Character X 2 Line LCD Module (Back Lit Option Through Adaptor)
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Keys
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3 Nos. (Units, Auto zero & Peak Hold)
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Resolution
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4 ½ Digit ( i. e. 19999 Counts)
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Pressure
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Selectable from any of 111 pressure
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Unit
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Units with Units Key
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Overload Indication
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At 20 % of full Scale, Audio-Visual Indication
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Sensor Range
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Any Sensor from 0.3 PSI to 5000 PSI
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Power
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6V (1.5 Vx4 Pencil Cells) or through Mains Adaptor (Optional)
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Dimension
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220 x 150 x 60 mm for Table Top Model 220 x 100 x 40 mm for Hand Held Model.
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Accuracy
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Better than ± 0.1 % of ES
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