Manual de instrucciones de Omega MASS FLOW FMA-1900

Manual de instrucciones del aparato Omega MASS FLOW FMA-1900

Aparato: Omega MASS FLOW FMA-1900
Categoría: Recambios para coche
Fabricante: Omega
Tamaño: 1.13 MB
Fecha de añadido: 11/21/2014
Número de páginas: 36
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Resúmenes de contenidos
Resumen del contenido incluido en la página 1

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e-mail: info@omega.com
FMA-1900
Mass Flow Meter

Resumen del contenido incluido en la página 2

OMEGAneP On-Line Service Internet e-mail http://www.omega.com info@omega.com Servicing North America: USA: One Omega Drive, Box 4047 IS0 9001 Crrtifiod Stamford, CT 06907-0047 Tel: (203) 359-1660 FAX : (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Lava1 (Quebec) H7L 5Al FAX: (514) 856-6886 Tel: (514) 856-6928 e-mail: canada@omega.com For i mmed iate technical or application assistance: Sales Service: l-800-826-6342 / l-SOO-TC-OMEGASM USA and Canada: Customer Service: l-800-622-2378 /

Resumen del contenido incluido en la página 3

B Om ega Eng inee ring is no t li ab le fo r an y da m age s o r pe rsona l i n ju ry , w ha tsoeve r, r esu lti ng fr o m the u se o f Om ega ’ s m ass flow m e te rs o r con tr o ll e rs w it h o xy gen ga s . A lt hough the m ass flow m e te rs and con tr o ll e rs a re c leaned p rio r t o sh ip m en t, w e m ake no c la im o r w a rr an ty tha t t he ir c lean li ne ss rende rs the m sa fe fo r oxygen se rv ice . The cus to m e r m us t c lean Om ega ’ s m ass flow m e te rs o r con tr o ll

Resumen del contenido incluido en la página 4

FMA-1900 SERIES FLOW CONTROLLERS CONTENTS TABLE O F 1 1 .Introduction ............................................................................ 1 1.1 Description.. ..................................................................... 2 Specifications .................................................................. 1.2 .................................................................................. 4 2. Installation ............................................... 4 2.1 Receipt of Your FMA-

Resumen del contenido incluido en la página 5

FMA-1900 SERIES FLOW CONTROLLERS TABLE O CONTENTS CONTINUE F D 3. Operation (continued) ............................................................... 16 3.12 On/Off Control ..................................... 17 3.13 Purging of Mass-Trak Products .....................................17 3.13.1 Purging of Non-reactive Gases 18 .......................................................... Appendix A Pin Connections Appendix B Purge and Valve Off Connections .,............................. 19 . .

Resumen del contenido incluido en la página 6

-I- INTRODUCTIO N 1.1 Description Omega’s FMA-1900 Series products can be calibrated to measure and control the mass flow rate of gases in several ranges from O-l 0 standard cubic centimeters per minute (SCCM) to O-50 standard liters per minute (SLM). Accuracy is +1.5% of full scale over a wide temperature and pressure range, and time response is 5 seconds to within 2% of set point. The FMA-1900 is ideal for a complete range of gas flow applications including general process control, laboratorie

Resumen del contenido incluido en la página 7

The versatile FMA-1900 product digitally displays the mass flow rate directly in engineering units or percent of full scale. The FMA-1900 is a transducer requiring a regulated 24 VDC external power source. The O-5 VDC and 4-20 mA output signals, which are linearly proportional to gas mass flow rate, are provided for recording, data-logging, or control. A 15-pin “ connector is provided for power input, output signal and set D” point control. FMA-1900 is available in several basic configu- ration

Resumen del contenido incluido en la página 8

ACCURACY fl.5% of full scale from 1 O-100% of full scale. REPEATABILIW &0.25% of full scale. TEMPERATURE COEFFICIENTI 0.08% of full scale per “ or better. C, PRESSURE COEFFICIENT: 0.02% of full scale per PSI (0.07 kg/cm*), or better: RESPONSE TIME: One second to 63% of final value. GAS PRESSURE: 150 PSI (10 kg/cm*) gauge maximum; 20 PSI (1.4 kg/cm*) gauge optimum. LEAK INTEGRITY: 1 x lo- cc/set of helium maximum ‘ATM to outside environment. (Not recommended for use as a positive shutoff valve.)

Resumen del contenido incluido en la página 9

-2- INSTALLATIO N 2.1 Receipt of Your FMA-1900 After receiving your FMA-1900, carefully check the outside of the packing carton for damage incurred in shipment. If the packing carton is damaged, notify the carrier at once regarding their liability. A report with the serial number and part number should be submitted to Customer Service. Call 800-622-2378 for detailed instructions. Remove the packing slip from its envelope and check that the carton contains all parts listed. Make sure spare parts

Resumen del contenido incluido en la página 10

2.3 Before Beginning the Installation Read the following notes in their entirety before beginning actual installation of your FMA-1900 flow controller. 1. Using the flow direction arrow on the FMA-1900 to prop- erly orient the controller, install the FMA-1900 into the gas flow line. If you are utilizing l/4-inch pipe, use a good quality paste pipe thread sealant. First tighten the fittings by hand, then tighten no more than one and a half turns to avoid cracked fittings or creating a calibration

Resumen del contenido incluido en la página 11

6 Integral Display: The 3 l/2 digit LCD display reads directly in engineering units or optional percent of full scale. The full scale range and gas are shown on the instrument data tag. The decimal point for the flow rate is set at the factory and will show automatically (e.g., %). “5.54” SLM or “76.4” 7.Overrange conditions are indicated by the display and/or output going to a high level, above the full scale range. After the over-range condition has been removed, it may take several minutes f

Resumen del contenido incluido en la página 12

2.4 Mechanical Installation CAUTION: The maximum pressure and temperature in the flow line in which your FMA-1900 is to be installed should not exceed 150 psig (10 kg/cm* gauge) or 122°F (5O respectively. ”C), In order to ensure a successful installation, inlet and outlet tubing or piping should be in a clean state prior to plumbing your FMA-1900 to the system. FMA-1900 is applicable to clean gas only because patticulates and other foreign matter may clog the sensor tube and laminar flow element

Resumen del contenido incluido en la página 13

$5_ Plumbing Connections Your FMA-1900 transducer is supplied with either female NPT (standard) or compression inlet and outlet fittings. These fittings should not be removed unless your FMA-1900 is being cleaned or calibrated for a new flow range. l/4-inch pipe requires a good quality, paste, pipe thread sealant which should be used in the inlet and outlet fittings. lighten fitting only one and a half turns past hand tight. CAUTION: Over-tightening the pipe connection may crack the fittings or

Resumen del contenido incluido en la página 14

TABLE 2-1 TYPICAL MINIMUM RESTRICTION DIAMETERS (Under Standard AP Conditions of 39 PSIG Inlet and Ambient Outlet) Flow Ranges Valve Orifice Diameter Relative to N2 (Typical-in inches) O-10 to O-500 SCCM 0.02 O-500 to O-l 000 SCCM 0.03 O-2 to O-5 SLM 0.05 0.05 O-10 SLM O-l 5 SLM 0.065 O-30 to O-50 SLM 0.083 2.6 Electrical Connections CAUTION: The FMA-1900 is not a loop powered device! Do NOT apply power to the 4-20 mA output or input section. FMA-1900 is provided with a 15-pin “ connector locat

Resumen del contenido incluido en la página 15

Figure 2-2 “D” Connector Location and Pin Number Assignments TABLE 2-2 “D” CONNECTOR PIN ASSIGNMENTS PIN # FUNCTION PIN # FUNCTION 9 4-20 mA (Common) SignalCommon 10 Signal Common O-5 VDC Flow Signal* +5 VDC Reference 11 valve Return 12 Valveoff 13 +24 VDC (15 VDC) Suppty PowerCommon 14 4-20 mA Output No Connection 15 ChassisGrand +24 VDC (15 VDC) Supply Setpoint Input NOTE: +15 VDC operation uses same supply pins. See page 6, #8. *O-l 0 VDC optional

Resumen del contenido incluido en la página 16

OPERATIO N 3.1 Referencing the Flow Rate to Other m Temperature and Pressure Conditions The gas flow rate output of your FMA-1900 is referenced to “standard 21.1 “C (70°F) and 760 mm of mercury ” conditions of (one atmosphere), unless you have specified otherwise in your order. Be sure you know the reference conditions of your FMA-1900, because it may make a difference if you are comparing the output of FMA-1900 with another type of flow meter. For example, the output reading of FMA-1900 will b

Resumen del contenido incluido en la página 17

3.3 Overranging If the flow rate exceeds the full scale range listed on the FMA- 1900 data tag, the output signal and digital display will read a higher value. The FMA-1900 has not been calibrated for overranged flows and will be both non-linear and inaccurate if an overrange condition exists. The O-5 VDC (O-l 0 optional) and 4-20 mA outputs can exceed full scale by as much as 50% or more. On the digital display, the display cannot exceed the four digits 1999. If the flow rate exceeds 1999, the

Resumen del contenido incluido en la página 18

Zero and Local Setpoint Adjustments The zero and local setpoint potentiometers are accessed through ports marked on the front of your FMA-1900. If the zero output is more than fl.5% of scale, you may adjust the zero potenti- ometer when you are absolutely certain that the system has reached its normal operating temperature and there is zero flow at the desired pressure and orientation. The local setpoint potentiometer is used when you are not using an external setpoint. Turning the potentiomet

Resumen del contenido incluido en la página 19

Figure 3-2 Component Location and D/P Switch Set Up 7 r- L-j r--’ I II___ i--i L I__ . ___

Resumen del contenido incluido en la página 20

3.9 Setpoint Configuration m - The DIP switches on the FMA-1900 flow controller are used to configure setpoint operation and the Positive Shut-Off feature. The default configuration is for an internal O-5 setpoint using the VDC on-board setpoint command potentiometer (accessible through a hole in the case) and the positive shut-off option enabled. Other options include internally or externally sourced O-5 VDC setpoint with positive shut-off enabled or disabled and externally sourced 4-20 mA se


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