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INSTRUCTION MANUAL 201/203/205/207 SERIES FLOW METERS/CONTROLLERS TELEDYNE HASTINGS INSTRUMENTS ISO 9001 CER TIFIED.
141-072011 - 201/203 Series Page 2 of 23 Manual Print History The print history shown below lists the printing da tes of all revisions and addenda create d for this manual. The revision level letter increases alph abetically as the manual undergoes subsequent updates.
141-072011 - 201/203 Series Page 3 of 23 Table of Contents 1. GENERAL INFO RMATIO N ........................................................................................................... ................................. 4 1.1. F EATURES ........
141-072011 - 201/203 Series Page 4 of 23 1. General Information The Hastings HFM-201/HFM-205/H FC-203/HFC- 207 series Mass flow meters (H FM-201/HFM- 205) and controllers (HFC-203/HFC-207) are desi gn.
141-072011 - 201/203 Series Page 5 of 23 1.2. Specifications HFM-201/205 Accuracy 1 and Linearity ....................................................................................................... ±1% F.S. Repeatability .........................
141-072011 - 201/203 Series Page 6 of 23 1.4. Optional 4 - 20 mA Current Output An option to the sta ndard 0 - 5 VDC output is the 4 - 20 mA current outpu t that is proportional to flow. The 4 - 20 mA signal is produced from the 0 - 5 VDC ou tput of the flow meter.
141-072011 - 201/203 Series Page 7 of 23 feature. More information about Hastings In struments’ power supplies can be f ound on the Hastings web site.
141-072011 - 201/203 Series Page 8 of 23 2. Inst allation and Operation This section contains the necessary steps to get a new flow meter/controller into operation as quickly and easily as possible. Please read the followi ng th oroughly before attempting to in stall the instrument.
141-072011 - 201/203 Series Page 9 of 23 2.4. Mechanical Connections The flow meter may be mounted in any position as long as the direction of gas flow through the instrument follows the arrow marked on the botto m of the flow meter ca se label.
141-072011 - 201/203 Series Page 10 of 23 the ground connection at the power supply. Do not connect the m together at the flow co ntroller as the resulting crosstalk could result in flow instabilities. 24 Volt Connections Refer to the diagram at right when connecting 24 Volt units.
141-072011 - 201/203 Series Page 11 of 23 some zero offset.) The 201/203 series is intende d for use in non-condens ing environments only. Condensate or any other liquids which enter the flow meter ma y destroy its electronic componen ts. 2.6.2. Zero Check Turn the power supply on if not already energized.
141-072011 - 201/203 Series Page 12 of 23 2.6.5. Operation with a Hastings power supply. There are two controls for each flow controller co nnected to a Hastings power supply. A switch labeled “OPEN; AUTO; CLOSED” (valve override THPS 400 only) and a potentiometer labeled “COMMAND”.
141-072011 - 201/203 Series Page 13 of 23 2.6.7. Operation with an external sensor. (Fig. 2.2) In some instances, it might be desirable to use an e xternal sensor to provide process infor mation to the control circuitry in the flow controller.
141-072011 - 201/203 Series Page 14 of 23 3) Step change the command voltage to 10 0%, and observe the flow through the co ntroller. If the overshoo t is too large, remove the jumper. Reset the comm and vo ltage to 10%, and allow the controller to stabilize.
141-072011 - 201/203 Series Page 15 of 23 3. Theory of Operation This section contains an overall functional de scription of HFC Flow Controllers. Detailed schematics and parts lists can be found at the end of the manual in Section 6.
141-072011 - 201/203 Series Page 16 of 23 output is sent to the terminals on the back and to the decoding circuitry in the display which converts it to a 3-d igit output. The controller circuitry utilizes the Command and the Flow voltages as input signals.
141-072011 - 201/203 Series Page 17 of 23 3.5. Valve: A solenoid valve is used as a pilot valv e to contro l a much larger pneumatic diaphragm valve. The pilot valve is an “automatic metering solenoid” va lve.
141-072011 - 201/203 Series Page 18 of 23 4. Maintenance This section contains service and calibration info rmation. Some portions of the instrument are delicate. Use extreme care when servicing the fl ow controller. The poten tiometer positions and the electrical components referred to in the trouble shooting section can be fo und in Section 6.
141-072011 - 201/203 Series Page 19 of 23 restriction is pneumatically close to the downstre am end of the fl ow controller. The differential pressure across the unit must be between 10-50 psig. SYMPTOM : Little or no flow, even with Valve Override switch OPEN.
141-072011 - 201/203 Series Page 20 of 23 stability. If the instrument is not shutting co mpletely off when Valve Override switch is in the CLOSE position, the orifice may requi re approximately 1/8 turn clockwi se. 4.4. End Cap Removal: The end cap on the inlet side must be removed to gain access to the filter or shunt assembly.
141-072011 - 201/203 Series Page 21 of 23 D) This formula provides approximate results th at tend to be undersized because it neglects pressure drops internal t o the flow controller, compressible gas effects and temperature effects. Multiply the result by ≈ 1.
141-072011 - 201/203 Series Page 22 of 23 diaphragm. Examine the o-ring on the valve top for damage if required. Install the valve top, ensuring that the ball bear ing in the side is on the downstream side. Tigh ten down the valve top evenly to insure a proper seal at the diaphragm.
141-072011 - 201/203 Series Page 23 of 23 5. W ARRANTY 5.1. Warranty Repair Policy Hastings Instruments warrants this product for a period of one year from the date of shipment to be free from defects in mate rial and workmanship.
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