Gebruiksaanwijzing /service van het product HFC-302 van de fabrikant Teledyne
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INSTRUCTION MANUAL HFM-300 FLOW METER, HFC-302 FLOW CONTROLLER TELEDYNE HASTINGS INSTRUMENTS ISO 9001 CER TIFIED.
Manual: 151-082010 300-302 Series Page 2 of 31 Manual Print History The print history shown below lists the printing da tes of all revisions and addenda created for this manual. The revision level letter increases alph abetically as the manua l undergoes subsequent updates.
Manual: 151-082010 300-302 Series Page 3 of 31 Table of Contents 1. GENERAL INFO RMATIO N ............................................................................................................................................ 4 1.1. F EATURES ...
Manual: 151-082010 300-302 Series Page 4 of 31 1. General Information The Teledyne Hastings HFM-300 is used to measure mass flow rat es in gases. In addition to flow rate measurement, the HFC-302 include s a proportional valve to accu rately control gas flow.
Manual: 151-082010 300-302 Series Page 5 of 31 1.2. Specifications Accuracy .................................................................................... < ±0.75% full sca le (F.S.) at 3 σ (±1.0% F.S. for >10 slm versions) Repeatability .
Manual: 151-082010 300-302 Series Page 6 of 31 The 4-20 mA I/O option ca n accept a current input. The 0-5 VDC command sign al on pin 14 can be replaced by a 4-20mA command signal. The loop pres ets an impedance of 75 ohms and is returned to the power supply through the valve common.
Manual: 151-082010 300-302 Series Page 7 of 31 2. Inst allation and Operation This section contain s the steps necessary to ass i st in getting a new flow meter/controller into operation as quickly and e asily as possible. Please read the following thoroughly before attempting to install the instrument.
Manual: 151-082010 300-302 Series Page 8 of 31 2.4. Mechanical Connections 2.4.1. Filtering The smallest of the internal passageways in the Hastings 300 is the diameter of the sensor tube, which is 0.026”(0.66 mm), and the annular clearance for th e 500 sccm shunt which is 0.
Manual: 151-082010 300-302 Series Page 9 of 31 Figures 2.1/2.2, and Tables 2.1/2.2, show the 300/302 pin out. Pin # Pin # 1 Signal Com m on 1 Do not us e 2 Do not use 2 Do not us e 3 Do not use 3 Do n.
Manual: 151-082010 300-302 Series Page 10 of 31 Span Error vs Pressure (0.026" Sensor T ube) y = 9.8877E-11x 3 3.4154E-07x - 2 8.3288E-05x + -20.0% -18.0% -16.0% -14.0% -12.0% -10.0% -8.0% -6.0% -4.0% -2.0% 0.0% 2.0% 0 100 200 300 400 500 600 700 800 900 1000 Pressure(psig) Span Error (% reading) Mean error max min 2.
Manual: 151-082010 300-302 Series Page 11 of 31 Span Error Vs. Pressure 0.017" Sensor -2% -1% 0% 1% 2% 3% 4% 5% 0 100 200 300 400 500 600 700 800 900 1000 Pressure (psig) Span Error (% reading) Mean Max Min If the system pressure is higher than 250 psig (1.
Manual: 151-082010 300-302 Series Page 12 of 31 The first method requires that the two controllers use the same signal range ( 0 to 5 VDC or 4 to 20 mA) and that they be sized and calibrated to provide the correct ratio of gasses.
Manual: 151-082010 300-302 Series Page 13 of 31 variable directly. This analog output signal could b e 0-5 volts, 0-10 volts (or 4-20 ma for units with 4- 20 ma boards) or any value in between. On the controller card there is a jumper that sets whether the control loop controls mass flow or an external process variable.
Manual: 151-082010 300-302 Series Page 14 of 31 Fig. 2.8 2.12. Temperature Coefficients As the ambient temperature of the instrument changes from the original calibration temperature, errors will be introduced into the output of the instrument. The Temperature Coefficient of Zero describes the change in the output that is seen at zero flow.
Manual: 151-082010 300-302 Series Page 15 of 31 3. Theory of Operation This section contains an o verall functional descript ion of the Hastings 300 ser ies of flow instruments. In this section and other sections throughout this manual, it is assumed that the custo mer is using a Hastings power supply.
Manual: 151-082010 300-302 Series Page 16 of 31 low temperatures used by the sensor, and because th e sensor construction preferentially favors the conductive and convective heat tr ansfer modes.
Manual: 151-082010 300-302 Series Page 17 of 31 The gas stream w ill increase in tempe rature due to the heat it gain s from the upstre am heater. This elevated gas stream temperature causes the heat tran sfer at the downstream heater t o gain heat from the gas stream.
Manual: 151-082010 300-302 Series Page 18 of 31 the shunt. Most instruments employ Poiseuille’s law and use some sort of multi-passage device that creates laminar flow between the upstre am sensor inlet and the downstream outlet.
Manual: 151-082010 300-302 Series Page 19 of 31 πμ ρ 5 Q L e = For a typical flow divider tube the entry length is approx imately 0.16 cm. From this it c an be seen that if the sensor inlet pickup .
Manual: 151-082010 300-302 Series Page 20 of 31 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16 0.18 0 5 10 15 20 25 30 35 Flow ( liter/min ) Passag e T hickness ( cm) Fi g . 3.5 Thickness of the annular ring as a function of flow rate for a sensor with a 75 Pa drop and a 2 c m spacing.
Manual: 151-082010 300-302 Series Page 21 of 31 3.7. Control Valve The control valve is an “automatic metering solenoid” valve (see Figu re 3.7). While most solenoid valves operate in either the fully open or closed positions, the automatic me tering solenoid valve is designed to control flow.
Manual: 151-082010 300-302 Series Page 22 of 31 This section contains ser vice and calibration info rmation. Some porti ons of the instrument are delicate. Use extreme care when servicin g the instrument. Authorized Maintenance With proper care in installation and use, the inst rument will require little or no maintenance.
Manual: 151-082010 300-302 Series Page 23 of 31 Action: Shut off all flow. For the standard 0-5VDC output, adjust the zero potent iometer located on the upper right inlet side of the flow met er until the meter indicates zero. For the optional 4-20 mA output, adjust the zero potentiometer so that the meter indicates slightly more than 4 mA, i.
Manual: 151-082010 300-302 Series Page 24 of 31 reverse order of disa ssembly. A new nickel gasket will be required . Secure the endcap with 65 in lb. (7.3 N m) to 85 in lb (9.6 N m) of torqu e on ea ch stainless steel socket head cap screw. Use of a fastener other than the one mentioned here may result in leakage at the seal.
Manual: 151-082010 300-302 Series Page 25 of 31 5. Gas Conversion Factors Gas conversion factors (GCF’s) for gasses metered us ing Hastings Instruments products, can be found by visiting the Hastings Instruments web site. The web a ddress can be found at the end of this document.
Manual: 151-082010 300-302 Series Page 26 of 31 being used to measure the flow of propane. The readin g from the meter is multiplied by the GCF for propane divided by the GCF of air.
Manual: 151-082010 300-302 Series Page 27 of 31 6. V olumetric Vs Mass Flow Mass flow measures just w hat it says, the mass or number of mol ecules of the gas flowing through the instrument. Mass flow (or weight per u nit time) uni ts are given in pounds per hour (lb/hour), kilograms per sec (kg/sec) etc.
Manual: 151-082010 300-302 Series Page 28 of 31 7. Drawings and References HFM-300 / HFC-302 Outline Drawing (All dim. Are approximate).
Manual: 151-082010 300-302 Series Page 29 of 31 TRANSDUCER ENDCAP ENDCAP SHUNT HFM-300 Sectional View Sensor and Main PC Board.
Manual: 151-082010 300-302 Series Page 30 of 31 SHUNT ENDCAP ENDCAP VALVE ASSEMBLY CONTROLLER CARD TRANSDUCER HFC-302 Sectional View.
Manual: 151-082010 300-302 Series Page 31 of 31 8. W ARRANTY 8.1. Warranty Repair Policy Hastings Instruments wa rrants this product for a period of one year from the date of shipment to be free from defects in mater ial and workmanship.
Een belangrijk punt na aankoop van elk apparaat Teledyne HFC-302 (of zelfs voordat je het koopt) is om de handleiding te lezen. Dit moeten wij doen vanwege een paar simpele redenen:
Als u nog geen Teledyne HFC-302 heb gekocht dan nu is een goed moment om kennis te maken met de basisgegevens van het product. Eerst kijk dan naar de eerste pagina\'s van de handleiding, die je hierboven vindt. Je moet daar de belangrijkste technische gegevens Teledyne HFC-302 vinden. Op dit manier kan je controleren of het apparaat aan jouw behoeften voldoet. Op de volgende pagina's van de handleiding Teledyne HFC-302 leer je over alle kenmerken van het product en krijg je informatie over de werking. De informatie die je over Teledyne HFC-302 krijgt, zal je zeker helpen om een besluit over de aankoop te nemen.
In een situatie waarin je al een beziter van Teledyne HFC-302 bent, maar toch heb je de instructies niet gelezen, moet je het doen voor de hierboven beschreven redenen. Je zult dan weten of je goed de alle beschikbare functies heb gebruikt, en of je fouten heb gemaakt die het leven van de Teledyne HFC-302 kunnen verkorten.
Maar de belangrijkste taak van de handleiding is om de gebruiker bij het oplossen van problemen te helpen met Teledyne HFC-302 . Bijna altijd, zal je daar het vinden Troubleshooting met de meest voorkomende storingen en defecten #MANUAl# samen met de instructies over hun opplosinge. Zelfs als je zelf niet kan om het probleem op te lossen, zal de instructie je de weg wijzen naar verdere andere procedure, bijv. door contact met de klantenservice of het dichtstbijzijnde servicecentrum.
