Manuel d'utilisation / d'entretien du produit 203 du fabricant Manfrotto
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INSTRUCTION MANUAL 201/203 SERIES FLOW METERS/CONTROLLERS TELEDYNE HASTINGS INSTRUMENTS.
201/203 Series Page 2 of 20 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.
201/203 Series Page 3 of 20 Table of Contents 1. GENERAL INFO RMATIO N ............................................................................................................................................ 4 1.1. F EATURES ......................
201/203 Series Page 4 of 20 1. General Information The Hastings HFM-201/HFC-203 series Mass flow meter (HFM-201) and controller (HFC-203) are designed to accurately measure and control mass flow over .
201/203 Series Page 5 of 20 1.2. Specifications Accuracy ........................................................................................................... ±1% full sc ale (F.S.) Repeatabil ity ...............................................
201/203 Series Page 6 of 20 1.3. Optional 4-20 mA Current Output An option to the sta ndard 0-5 VDC o utput is the 4-20 mA cur rent output that is proportional to flow.
201/203 Series Page 7 of 20 2. Inst allation and Operation This section contains the necessary ste ps to assi st in ge tting a new flow meter/controller into operation as quickly and easily as possible. Please read the following th oroughly before attemptin g to install the instrument.
201/203 Series Page 8 of 20 regulators and large internal diameter plumbing help to make the system more stable. The pressur e drop between the regulator and the instrume nt due to line resistance should be minimized. The differential pressure across the u nit should be less than 6” of H2O at ma ximum flow.
201/203 Series Page 9 of 20 If a valve override switch is not desire d, the unit is ready for use at this time. If the override switch is desired, connect the center pin of a single pole, thr ee-position switch with the center off position to pin 8. Connect +15VDC to one end of the switch, a nd -1 5VDC to the other e nd.
201/203 Series Page 10 of 20 B, it then becomes a variable reference voltage for flow controller B proporti onal to the flow rate of flow controller A. If the set point potentio meter of flow controller B is set at 50% of full scale, and the reference voltage from flow controller A is 4.
201/203 Series Page 11 of 20 2.6.8. Response to Command Changes The response of the control circuit to changes to the command signal is set at the factory for fast, stable response. Should it be necessar y, the response is adjust able using the jumper lab eled “JP4,” located in the center of PC-828.
201/203 Series Page 12 of 20 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.
201/203 Series Page 13 of 20 This signal is amplified by the meter circuitry until is 0-5.00 VDC. This 5 volt output is sent back to the power supply and to the flow meter circuitry, if applicable.
201/203 Series Page 14 of 20 3.5. Valve: At flow rates higher than 30 slm, two valves are used in parallel. A solenoid valve is used as a pilot valve to control a much larger pneumatic diaphragm valve. The pilot valve is an “automatic metering solenoid” valve.
201/203 Series Page 15 of 20 4. Maintenance This section contains service and calibration info rmation. Some portion s 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.
201/203 Series Page 16 of 20 ACTION : Shut off gas supply and power supply. Remove cover and PC board from unit. Remove sensor assembly and examine. If sen sor has evid e nce of plugging, clean or replace as applicable SYMPTOM : Flow controller oscillates.
201/203 Series Page 17 of 20 4) Set command to 1 00%. Adjust SPAN (R29) po t until the flow reference reads full scale flow (5.000 VDC). NOTE: Perform this step only if a calibrated reference flow meter is available. 5) Record flow meter and fl ow reference outputs for flow rates of 20%, 40%, 6 0%, 80% and 100%.
201/203 Series Page 18 of 20 Orifice Changes: A) Determine the mini mum expected upstream pressure (Pu) in PSI ab solute and the maximu m expected downstream pressure (Pd) in PSI absolute for full flow conditions. B) If Pu >2Pd, use formula 1; other wise use formula 2.
201/203 Series Page 19 of 20 STOCK NO. DESCRIPTION .................................................................................. AIR RANG E 28-13-190 Orifice 0.046 ..................................................................................
201/203 Series Page 20 of 20 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. This warranty does not apply to defec ts or failures resulting from unauthorized modification, misuse or mishandling of the product.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Manfrotto 203 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Manfrotto 203 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Manfrotto 203, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Manfrotto 203 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Manfrotto 203, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Manfrotto 203.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Manfrotto 203. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Manfrotto 203 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
