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.
