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Buen manual de instrucciones
Las leyes obligan al vendedor a entregarle al comprador, junto con el producto, el manual de instrucciones Teledyne NALL. La falta del manual o facilitar información incorrecta al consumidor constituyen una base de reclamación por no estar de acuerdo el producto con el contrato. Según la ley, está permitido adjuntar un manual de otra forma que no sea en papel, lo cual últimamente es bastante común y los fabricantes nos facilitan un manual gráfico, su versión electrónica Teledyne NALL o vídeos de instrucciones para usuarios. La condición es que tenga una forma legible y entendible.
¿Qué es un manual de instrucciones?
El nombre proviene de la palabra latina “instructio”, es decir, ordenar. Por lo tanto, en un manual Teledyne NALL se puede encontrar la descripción de las etapas de actuación. El propósito de un manual es enseñar, facilitar el encendido o el uso de un dispositivo o la realización de acciones concretas. Un manual de instrucciones también es una fuente de información acerca de un objeto o un servicio, es una pista.
Desafortunadamente pocos usuarios destinan su tiempo a leer manuales Teledyne NALL, sin embargo, un buen manual nos permite, no solo conocer una cantidad de funcionalidades adicionales del dispositivo comprado, sino también evitar la mayoría de fallos.
Entonces, ¿qué debe contener el manual de instrucciones perfecto?
Sobre todo, un manual de instrucciones Teledyne NALL debe contener:
- información acerca de las especificaciones técnicas del dispositivo Teledyne NALL
- nombre de fabricante y año de fabricación del dispositivo Teledyne NALL
- condiciones de uso, configuración y mantenimiento del dispositivo Teledyne NALL
- marcas de seguridad y certificados que confirmen su concordancia con determinadas normativas
¿Por qué no leemos los manuales de instrucciones?
Normalmente es por la falta de tiempo y seguridad acerca de las funcionalidades determinadas de los dispositivos comprados. Desafortunadamente la conexión y el encendido de Teledyne NALL no es suficiente. El manual de instrucciones siempre contiene una serie de indicaciones acerca de determinadas funcionalidades, normas de seguridad, consejos de mantenimiento (incluso qué productos usar), fallos eventuales de Teledyne NALL y maneras de solucionar los problemas que puedan ocurrir durante su uso. Al final, en un manual se pueden encontrar los detalles de servicio técnico Teledyne en caso de que las soluciones propuestas no hayan funcionado. Actualmente gozan de éxito manuales de instrucciones en forma de animaciones interesantes o vídeo manuales que llegan al usuario mucho mejor que en forma de un folleto. Este tipo de manual ayuda a que el usuario vea el vídeo entero sin saltarse las especificaciones y las descripciones técnicas complicadas de Teledyne NALL, como se suele hacer teniendo una versión en papel.
¿Por qué vale la pena leer los manuales de instrucciones?
Sobre todo es en ellos donde encontraremos las respuestas acerca de la construcción, las posibilidades del dispositivo Teledyne NALL, el uso de determinados accesorios y una serie de informaciones que permiten aprovechar completamente sus funciones y comodidades.
Tras una compra exitosa de un equipo o un dispositivo, vale la pena dedicar un momento para familiarizarse con cada parte del manual Teledyne NALL. Actualmente se preparan y traducen con dedicación, para que no solo sean comprensibles para los usuarios, sino que también cumplan su función básica de información y ayuda.
Índice de manuales de instrucciones
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Página 1
INSTRUCTION MANUAL MODEL NALL MASS FLOWMETERS TELEDYNE HASTINGS INSTRUMENTS ISO 9001 CER TIFIED[...]
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Página 2
Manual 111-082010_Nall Mass Flowmeters Page 2 of 23 Manual Print History The print history shown below lists the p rinting dates of all revisions and a ddenda created for thi s manual. The revision level letter increases alphabetically as the manual undergoes subseque nt updates. Addenda , which are released between revisions, contain important cha[...]
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Página 3
Manual 111-082010_Nall Mass Flowmeters Page 3 of 23 Table of Contents 1.0 GENERAL INFO RMATI ON ....................................................................................................................................... 5 1.1 F EATURES : ....................................................................................................[...]
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Manual 111-082010_Nall Mass Flowmeters Page 4 of 23 11.6 S PECIFICATIONS ................................................................................................... E RROR ! B OOKMARK NOT DEFINED . 12.0 WARRA NTY AND REPAI R............................................................................................................ .........[...]
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Página 5
Manual 111-082010_Nall Mass Flowmeters Page 5 of 23 1.0 General Information 1.1 Features: Hastings Linear Mas s Flowmeters are designed to accurately measure mass flow without corre ctions or compensations for gas pressure and temp erature. Due to a linear electrical out put signal, the flowmeters are ideal for use with totalizers and recorders. Ha[...]
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Manual 111-082010_Nall Mass Flowmeters Page 6 of 23 2.0 OPERA TING PRINCIPLE 2.1 Operating Principle Hastings Linear Mass Flowmeters operat e on a unique electrical principle whereby a capillary tube is heated uniformly by a transformer. The temp erature distribution is symmetrical about the midpoint at zero flow (see Figure 2.1) and external therm[...]
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Página 7
Manual 111-082010_Nall Mass Flowmeters Page 7 of 23 3.0 RECEIVING AND INSPECTION 3.1 Initial Inspection: Carefully unpack the Hastings Linear Mass Flowmete r and inspect it for any obvious signs of damage due to shipment. Immediately advise the carrier who de livered the shipment of any suspected damage . 3.2 Packing List: The basic flowmeter consi[...]
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Manual 111-082010_Nall Mass Flowmeters Page 8 of 23 4.0 INST ALLA TION INSTRUCTIONS. 4.1 TRANSDUCER 4.1.1 Orientation of the Transducer The transducer may be mounted in any position, as long as the direction of gas flow thro ugh the transducer is from “IN” to “OUT” as marked on the transducer base. (U-Seri es transducers should be mounted i[...]
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Página 9
Manual 111-082010_Nall Mass Flowmeters Page 9 of 23 The use of O-ring seal connectors on the transducers w ith female threads is often more convenient for ma ny low pressure applications, such as with U-Series transducers. 4.1.5 Checking for Leaks Check the transducer connections for leaks by pressurizing the line to the operatin g pressure (not to[...]
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Manual 111-082010_Nall Mass Flowmeters Page 10 of 23 4.4.3 Electrical Zero Check Turn the power supply “ON” and allow the flowmeter 30 minutes to warm up. Stop all flow through the transducer and check the electrical zero. CAUTION: DO NOT ASSUME THAT ALL METERING VA LVES WILL COMPLE TELY SHUT OFF FLOW. EVEN A SLIGHT LEAKAGE THROUGH A VALVE WILL[...]
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Manual 111-082010_Nall Mass Flowmeters Page 11 of 23 5.0 USING THE FLOWMETER USING THE HASTING S LINEAR MASS FLOWMETER 5.1 Warm-Up Time: When the flowmeter is first turned on, the meter w ill fluctuate somewhat before settling to a stable indication. The flowmeter indicates the mass flow to +/- 3% of full scale in about 5 minutes, but should be all[...]
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Página 12
Manual 111-082010_Nall Mass Flowmeters Page 12 of 23 Actual flow = meter reading X (KHe) = 50 SCCM X 1.382 = 69.1 SCCM of Helium 5.5.2 Flowmeter Factory Calibrate d for a Special Gas If the Hastings Linear Mass Flowmeter is calibrated for a gas other th an air, it may also be used to measure the flow rate of many other gases. The flow rate will be [...]
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Manual 111-082010_Nall Mass Flowmeters Page 13 of 23 Example : (A) What is the output sensitivity of HS-1KS? (B) What is the flow rate for a 2.71 volt output? Solution : (A) Sensitivity = rated flow R a t e d o u t p u t = 1000 SCCM 5 . 0 0 V D C = 200 SCCM/VDC (B) Mass Flow = output X sensitivity = 2.71v X 200 SCCM/VDC = 542 SCCM 5.7 Accuracy: The[...]
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Manual 111-082010_Nall Mass Flowmeters Page 14 of 23 6.0 PRESSURE EFFECTS 6.1 Standard Transducers: The Hastings Linear Mass Flowmeter can measure mass fl ow accurately without co rrections for a variation in line pressure from one psia (.068 ATM) to 250 psig (18 ATMS.) Mass flow indications are possible with downstream pressures as low as .03 psia[...]
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Manual 111-082010_Nall Mass Flowmeters Page 15 of 23 7.0 TEMPERA TURE EFFECTS 7.1 Ambient Temperatures: 7.1.1 Transducer In order to maintain the accuracy of the flowmeter with changes in ambient temperat ure, it is necessary to keep the temperature of the transdu cer between 10° C and 50° C. (The te mperature of the base is normally about 10° C[...]
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Manual 111-082010_Nall Mass Flowmeters Page 16 of 23 8.0 DIFFERENTIAL PRESSURE 8.1 TYPICAL PRESSURE DROPS The differential pressure drop (DP) across the Hastin gs HS-Series Mass Flow Transduce r can vary between 0.50” H2O depending upon the transducer’s range. Ot her press ure drops are listed below and all are based upon full-scale flow rates [...]
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Manual 111-082010_Nall Mass Flowmeters Page 17 of 23 8.2.2 Decrease in Line Pressure The relationship stated in Section 8. 2.1 also shows that DP i ncreases prop ortionally as absolute line pressure decreases. This situation is true un til the DP becomes a significant part of the tota l absolute line pressure. When this occurs, the relationship bec[...]
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Manual 111-082010_Nall Mass Flowmeters Page 18 of 23 9.0 Calibration 9.1 CALIBRATION PROCEDURES The Hastings Mass Flowmeter has been carefully inspected and calibrated at the f actory before shipment and will give long, reliable service. Calibration is stable , and recalibratio n is seld om necessary under normal operating conditions; however, to m[...]
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Manual 111-082010_Nall Mass Flowmeters Page 19 of 23 TRANSDUCER MILLIVOLT TEST +5 VDC OUTPUT BIAS METER GAIN TRMS AC TEST JUMPER T1 FOR 230V OPERATION FOR 581A ONLY FIG 9.1[...]
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Manual 111-082010_Nall Mass Flowmeters Page 20 of 23 10.0 Maintenance 10.1 Transducers: 10.1.1 Cleaning With proper care in installing and us e, the transducer will require little or no maintenance. Should the small passages in the transducer become part ially clogged, they can be cleaned with any suitable solvent such as acetone, vythene, etc. and[...]
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Manual 111-082010_Nall Mass Flowmeters Page 21 of 23 11.0 Accessories OPTIONS AND ACCESSORIES 11.1 Double Point Relay Flowmeter/Alarm ( DNALL-P): The Hastings Flowmeter/Alarm is a complete Linear Mass Flowmeter with all of its charac teristics and ranges. It also includes two adjustable HI-LO set points which can be read on the digital indicator. W[...]
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Manual 111-082010_Nall Mass Flowmeters Page 22 of 23 a) What is the sensitivity of the totalizer? b) What is the total flow indicated by the 13, 500 count? c) What is the average flow rate over the 7 hour period? Solution: a) The full scale flow rate for the TNALL-P/ HS-10S is 10 SCCM. The full-scale count rate for the totalizer is 100 counts per m[...]
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Manual 111-082010_Nall Mass Flowmeters Page 23 of 23 12.0 W arranty and Rep air 12.1 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 material and workmanship. This w arranty does not apply to defect s or failures resulting from unauthorized modification,[...]