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Summary of Contents for Kofloc HFM-301 Series
- Page 1 MJ400063H1 Mass Flow Meter HFM-301series Mass Flow Controller HFC-303series...
- Page 2 25slm to 1000slm. These instruments are intrinsically linear and have an accuracy of better than ±1％F.S.（full scale）. Kofloc mass flow instruments do not require any periodic maintenance under normal operating conditions with clean gases. No damage will occur from the use of moderate overpressures（~500psi/3.45Mpa）or overflows.
- Page 3 MJ400063H1 1.1 Specifications ±1％full scale（F.S.） Accuracy ±0.07％ of F.S. Repeatable Maximum pressure 500psi ［3.45Mpa］ Maximum pressure 1000psi ［6.9Mpa］ （with high pressure option） ＜0.026％ of reading/psi（N Pressure coefficient ） 0-60℃ in non-condensing environment Operating temperature Temperature coefficient（ZERO） Maxim ±0.085％/℃（0-60℃） Temperature coefficient（SPAN） Maxim ±0.092％/℃（15-50℃） Leak integrity std.cc/s.
- Page 4 MJ400063H1 1.2 Optional 4-20mA Current Output An option to the standard 0-5VDC output is the 4-20mA current output that is proportional to flow. The 4-20mA signal is produced from the 0-5VDC output of the flow meter. The current loop output is useful for remote applications where pickup noise could substantially affect the stability of the voltage output.
- Page 5 Kofloc power supply the output is routed to the display, and is also available at the terminal on the rear panel. If a Kofloc supply is not used, the output is available on pin 6 of the “D” connector. It is recommended that the road resistance be no less that 2ｋΩ. If the optional 4-20mA output is used, the load impedance must be selected in accordance with Section 1.2.
- Page 6 MJ400063H1 2.5 Electrical Connections If a power supply from Kofloc Instruments is used, installation consists of connecting the HFM-301 and HFC303 series cable from the “D” connector of the power supply to the “D” connector of the flow meter / controller .
- Page 7 MJ400063H1...
- Page 8 MJ400063H1 2.6 Operating 2.6.1 Operating Conditions For proper operation, the combination of ambient temperature must be such that the flow meter temperature remains between 0 and 60℃. The301/303 series is intended for use in non-condensing environments only. 2.6.2. Zero Check Turn the power supply on if not already energized.
- Page 9 （Resistive Temperature Detectors）and provides an analog output of either 0-5VDC or 4-20mA. 4. Gas Correction Factors Most Kofloc flow meters and controllers are calibrated using nitrogen. The correction factors published by applied to these instruments. To apply the GCF’s （Gas Conversion Factors） , simply multiply the gas flow reading times the GCF for the process gas in use.
- Page 10 MJ400063H1 5. Outside Drawing...
- Page 11 MJ400063H1 6 Product Warranty 1. The contents of warranty ① Warranty period The warrant period shall be one year after the shipment. ② Warranty range If a malfunction of the product you purchased occurs because of our responsible reasons, offer of substitute or it will be charge-free repaired in our factory.
- Page 12 MJ400063H1 URL：http://www.kofloc.co.jp...
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