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D07-7K / ZM Mass Flow Controller D07-7KM / ZM Mass Flow Meter INSTRUCTION MANUAL Version Dec. 2015...
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SEVENSTAR may not be responsible. If you require any additional information or assistant of Sevenstar D07 series Mass Flow Controller and Mass Flow Meter, please feel free to contact your local Sevenstar Sales Agent or Sevenstar Customer Service at: (8610)- 6436 2925.
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CONTENTS 1. APPLICATION & FEATURES……………. 5.2.1 Start Up ………………………………….. 2. SPECIFICATION………………………….. 5.2.2 Zero Test and Adjustment………………….. 3. STRUCTURE & PRINCIPLE……………... 5.2.3 Gas Supply…………………………………. 3.1 Structure……………………………………. 5.2.4 Shut Off……………………………………. 3.2 Operation Principle………………………… 6. CAUTION…………………………………… 4. INSTALLATION …………………………. 6.1 Medium Forbidden …………………………... 4.1 Receipt and Upacking……………………….
(good operation in high pressure and vacuum situations), simple convenient operation, flexible installation, possible connecting with PC to carry out automatic control to the users’ system. D07 series better is connected together with D08 series Readout Boxes, the cable connection is showing as following (Figure 1):...
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Power supply -15 V 50 mA According to Figure 5 Dimensions Weight 0.92 kg The main specifications of D07 series could be found in table 1 and table 2. D07-7KM is the measuring part of D07-7K. Page 3 of 27...
3. STRUCTURE & OPERATION PRINCIPLE 3.1 Structure The MFC consists of four basic devices: flow sensor, flow-splitter bypass, control valve and printed circuit board. Printed Circuit Board Electric Connector Locknut Stand Solenoid Valve Zero Adjustment Sensor Inlet-Fittings Outlet-Fittings Base Figure 2. Structure of D07-7K Structure of D07-7M is basically as same as structure of D07-7A except solenoid valve.
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signal which is proportional to the mass flow rate of the gas through the tube. This 0~5 VDC signal is compared to a set point voltage from a D08 series Flow Readout Box (or other voltage source). From this comparison, any deviation between set point signal and measured signal are chapleted into a control valve adjustment until two signals are identical.
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Attention : When Valve controller of MFC is posited on PURGE, it can be used as a MFM. When it is used as a MFM, the flow test voltage can reach beyond +10V, but it is important, if the flow is beyond F.S. (Full Scale), flow will not have linearity relation with test voltage.
INSTALLATION & CONNECTION 4.1 Receipt and Upacking The D07-7K mass flow controller are manfactured under clean room conditions, and has been packed acordingly upon receipt, after receiving the equipment, please carefully check the outer package for any damage incurred during the transportation. Check that the delivery is complete and no parts are missing. Since the D07-7K can be ordered in Several configuration, ensure that the scope of supply is corect.
Figure 5. Dimension of D07-7KM Attention : The height of 108mm is the height without electric connector of cable. The height will be added 50mm more after added the electric connector. 4.3 Fittings The standard fittings are usedCompression Fitting and VCR, there are eight type’s fittings can be provided: a.
Figure 6 is an example of system construction. “ → ” shows the direction of flow, please pay attention for the flow direction . Front Ferrule Fittings Tube Back Ferrule Figure 6. Compression Fitting Connector Installation Attention : When installing the fitting, you should manually use spanner to wrench it tighten by 1/2 turn pulling up, (imported Compression Fitting should use spanner to be tighten in 1,25 turns) to prove its not blow-by after your installing the front ferrule ,back ferrule and nut.
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MFC could begin operating after it was well connected with professional cable and corresponding Flow Readout Box. 7K-MFC connection is showing in the following figure 7. Attention : D07-7K is upgrade of D07-7A; D07-7K applied affixed components and international standard D connector.
4.5 PC Connections a. Connection through Flow Readout Box with PC or other external signal. (Figure 9) Flow Signal Output A/D In COMPUTER Signal common Signal common Or PLC D/A Out Connection MFC or Signal common Cable +15V Off Valve drive (ATTENTION: No “Valve drive”...
b. PC Directly Connection (Figure 10) 0~+5V Flow Signal Output A/D In Signal common Signal common PC or PLC 0~+5.00 D/A Out Signal common MFC or MFM (ATTENTION: No “Valve drive” and “Set” in MFM ) Auto Valve drive +15V +15V Purge common...
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Linearity potentiometer Zero Span potentiometer Zero potentiometer Figure 11. The Position of Potentiometer of 7K & 7KM Another way to adjust zero is potentiometer adjustment from D08 series Flow Readout box. Page 13 of 27...
5. OPERATING INSTRUCTIONS 5.1 MFC Operation 5.1.1 Start Up (Figure 12) The main operating should perform in the Flow Readout Box. Valve Control Switches and flow setting potentiometer are in the front of Readout Box panel, the flow setting internal or external signal control switches are on the back of panel of Readout Box.
c. If Valve switch is on the position of PURGE, the flow rate will reach up to the maximum value after gas and power supplying, which will have the function of air blasting to the gas circuit. d. If Valve switch is on the position of AUTO and presetting is not zero, open the gas after power supply, the flow rate will have a big overshoot and then rapidly reach to the stable presetting value, this kind of operation should better be avoided.
5.2.2 Testing and Zero Adjustment Please check up zero point of MFM after its warming up (especially for the first time operating), it could have reference in 4.5, without gas supplying, which could adjust zero by zero potentiometer. 5.2.3 Gas Supply After zero movement reaches stable, MFM Could have gas supply.
6. CAUTION 6.1 Medium Forbidden The gas of using should be purified without dust、 liquid and oil stain. When necessary, it should be added filter to gas circuit to make sure gas purification. If the outlet of MFC connects with liquid sources, which should be added simple directional valve of MFC outlet to avoid the liquid is refluent to the tube to destroy MFC.
6.7 Calibration and Conversion D07 series is calibrated by nitrogen. Other gas calibrations please inform while your order statements. When the nitrogen calibration users use other gas operating, it could convert and calculate used gas flow rate by conversion coefficient of appendix 9.1.
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For Example: D07-7K007001LCCNUS D07-7K 007 001L N U S Type Number:D07-7K MFC Gas:H Flow Range Full Scale:1SLM Inlet and Outlet Fittings:Compression Fitting 1/4" Seal Materials: NEOPRENE Mounting Position:Vertical inlet up Customer Special Requirements:For Example:The letters on cover and tag:in English;Differential Pressure:(0.05~0.3) MPa; Customer Special fittings(According to drawing) ;Customer Special Calibration Temperature:40℃.
7. TROUBLESHOOTING Table 3. Failure Handling FAILURE CAUSE TREATMENT There is no gas flow 1.1 Gas flow is shutting off, no gas Check the gas sourcing and make it after turn on. inputting open 1.2 Valve control switch is shutoff Turn the switch to CONTROL or PURGE 1.3 No setting signal...
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FAILURE CAUSE TREATMENT Fluctuant flow rate Inlet pressure is too low or Heighten inlet pressure instable 5.2. High internal gas resistance Lessen internal resistance (The heavy gas flow should have big valve open, widen tube to parallel connecting gas bottles to improve gas supply capacity.) 5.3 Circuit or valve failure *Repair and adjust Disturbed...
Buyers undertake to check and inspect the goods and to notify SevenStar of shipment incidents by fax, phone or e-mail as soon as possible after receipting the goods.
9.2 Conversion Factors Instruction MFC and MFM are standard calibrated by N while it’s out of factory. Other gas calibrations can be approximated by converting of conversion factors of our instruction. While using other gas operating: One single gas: The conversion factors could find out in the users specification instruction. A mixture of two or more gases: Assume there is “n”...
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Beijing Sevenstar Qualiflow Electronic Equipment Manufacturing Co.,Ltd. D07 Series Mass Flow Controller Beijing Sevenstar Electronics Co., Ltd. Mass Flow Meter Subsidiary Co., Ltd. Address: No.1 Jiuxianqiao East Rd., Chaoyang District, Beijing, China P.O.BOX 3#741, Beijing, China Post code: 100015 Tel:...
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