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Summary of Contents for Kofloc 3810S
- Page 1 MJ400022K1 THERMAL MASS FLOW SENSOR MODEL3810S INSTRUCTION MANUAL...
- Page 2 ･ The product and this manual have been carefully prepared, but if you notice any insufficiency, mistakes or omissions, please inform us. ･ KOFLOC shall not be liable whatsoever for damages to or failures of the equipment which may result from neglecting the precautions contained in this manual or using the equipment in...
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Page 3: Table Of Contents
MJ400022K1 Table of Contents 1. Precautions for Handling 1-1 Checking the ID Plate 1-2 Precautions for Transportation 1-3 Precautions for Product Storage 2. Overview 2-1 Principle of Operation 2-2 Standard Specifications 2-3 External Dimensions 3. Configuration 3-1 Configuration of the Thermal Mass Flow Meter 3-2 Precautions 4. -
Page 4: Precautions For Handling
【1-2 Precautions for Transportation】 To prevent damage during transportation, it is requested that the product be moved to the installation site in the style as it has been received from KOFLOC. 【1-3 Precautions for Product Storage】 If the product will not be put in operation for a long period of time after it arrived at your site, failures may develop for unexpected reason. -
Page 5: Overview
MJ400022K1 2. Overview This flow meter converts flow rates of gases to electric signals and enables measurement of flow rates at very low cost. It replaces the conventional float type flow meter and ensures highly accurate flow rate measurement. 【2-1 Principle of Operation】 The flow detect sensor is wound by heating wires on the outside of the metallic capillary in two places. -
Page 6: Standard Specifications
MJ400022K1 【2-2 Standard Specifications】 Model 3810S Item Flow rate range 10 ml/min – 2 l/min 3 l/min – 50 l/min converted (F.S.) ※1 Gases to measure Air, N , He, Ar, CO ±3%F.S. max ±5%F.S. max Accuracy ±0.5%F.S. max Reproducibility 980kPa ※2... - Page 7 MJ400022K1...
- Page 8 MJ400022K1...
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Page 9: Configuration
Flow rate indicator + DC power supply CR-700 100 VAC±10%(50/60 Hz), 18 VA ③ One set of special connecting cables (If a cable longer than 1 m is required, please contact KOFLOC.) 2) Electric wiring diagram of the mass flow meter (Model 3810S) -
Page 10: Precautions
MJ400022K1 【3-2 Precautions】 1) Use clean and dry gas with the mass flow meter. The dryness condition must be a dew point below –20℃ at atmospheric pressure. 2) A 100-micron filter is installed at the gas inlet. However, if the meter is to be used in a line where dust and mist might be produced, install a filter of about 10-micron in front of the meter to remove them. -
Page 11: Contamination Of The Piping System
If the reference meter is not available, never tinker with the “SPAN” variable resistor. Connect the reference flow meter to the gas outlet. With Model 3810S, adjust the “SPAN” variable resistor so that when gas is let flow at the full-scale rate, the flow rate signal output becomes 5 VDC. -
Page 12: Run
MJ400022K1 【5-3 Run】 Model 3810S has been set ready for measurement. It outputs flow rate signals from 0 to 5 VDC for flow rates from zero to the full scale. Example: Full scale 1 l/min: Flow indication on PM-3 is 1.000 l/min Full scale 10 l/min: Flow indication on PM-3 is 10.00 l/min... -
Page 13: Troubleshooting
If the meter is considered to have failed, in order to prevent short circuit accidents, never use the connector pins of the meter to check output voltages, but be sure to use such safe places as the check terminals of the connected equipment. If the meter failed, please contact KOFLOC. ！ DANGER Never disassemble the meter. -
Page 14: Significantly Different Zero
１ Replace the power supply. voltage ２ Sensor faulty Please contact KOFLOC. 7. Maintenance 【7-1 Zero/Span Calibration】 If the user can use the reference flow meter, calibrate both the zero and span. If not, calibrate the zero only. 【7-2 Cleaning the Inlet and Outlet Joints】... - Page 15 MJ400022K1 URL：http://www.kofloc.co.jp...
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