Sierra Accu-Mass 730 Скачать руководство пользователя страница 7

Series 730 Instruction Manual

IM-73-E

5

Installation Overview

When selecting an installation site, make sure that:

1.  Line pressure and temperature will not exceed the flow meter

rating. Temperature should not vary more than 120°F (50°C)
from the calibration temperature. Line pressure should not
vary more than 50 psi (3.4 bar) around the calibrated pressure.

 

2.  The ambient temperature falls within the limits of: 32°F (0°C)

to 120°F (50°C).

 

3.  The location meets the required minimum number of pipe di-

ameters upstream and downstream of the sensor head (see Fig-
ure 2).

 

4.  Safe and convenient access with adequate clearance

Also,

verify the meter is located where the gas is clean and dry and
the meter is calibrated for the gas to be measured.

 

5.  For remote installations, verify the supplied cable length is

sufficient to connect the flow meter sensor to the remote
electronics. (Do not extend or shorten the supplied cable be-
tween the probe and the electronics.)

Also, before installation check your flow system for anomalies such as:

• 

leaks

• 

valves or restrictions in the flow path that could create distur-
bances in the flow profile that might cause unexpected flow rate
indications

• 

heaters that might cause rapid excursions in the measured tem-
perature

Unobstructed Flow Requirements

Select an installation site that will minimize possible distortion in the
flow profile. Valves, elbows, control valves and other piping compo-
nents may cause flow disturbances. In order to achieve accurate and
repeatable performance install the flow meter using the recommended
number of straight run pipe diameters upstream and downstream of
the sensor given in Figure 2.

Содержание Accu-Mass 730

Страница 1: ...Part Number IM 73 AM Revision E 05 04 5 Harris Court Building L Monterey CA 93940 831 373 0200 800 866 0200 Fax 831 373 4402 http www sierrainstruments com Sierra Instruments b v Bolstoen 30A 1046 AV...

Страница 2: ...publication may be copied or distributed transmitted transcribed stored in a retrieval system or translated into any human or computer language in any form or by any means electronic mechanical manua...

Страница 3: ...bstructed Flow Requirements 5 Installation 6 Wiring Connections NEMA 2 Enclosures 7 Wiring Connections NEMA 4 Enclosures 7 Output Signal Wiring 8 Troubleshooting the Flow Meter 8 Returning Equipment t...

Страница 4: ...meter repair verify that the line is de pressurized Caution Always remove main power before disassembling any part of the flow meter Caution Printed circuit boards are sensitive to electrostatic disc...

Страница 5: ...of a 304 stainless steel probe which is inserted in the gas stream The sensor consists of two sensing ele ments a velocity sensor and a temperature sensor which automati cally corrects for changes in...

Страница 6: ...ial Do not return any equipment to the factory without first contacting Sierra Customer Service Technical Assistance If you encounter a problem with the flow meter review the configura tion informatio...

Страница 7: ...measured 5 For remote installations verify the supplied cable length is sufficient to connect the flow meter sensor to the remote electronics Do not extend or shorten the supplied cable be tween the...

Страница 8: ...umber of diameters of straight pipe required downstream of the flow meter Flow Flow Flow Flow Flow Flow Figure 2 Recommended Pipe Length Requirements for Installation Installation The following instru...

Страница 9: ...input power 300 mA load maximum to pin 1 and power ground to pin 5 See Output Sig nal Wiring for signal wiring instructions Figure 3 NEMA 2 CE Enclosure Wiring Connections Warning All wiring procedure...

Страница 10: ...s 3 Verify the flow meter is installed with the correct number of up stream and downstream pipe diameters as shown in Figure 2 4 Verify the flow direction indicator is correctly aligned pointing downs...

Страница 11: ...flow Correct alignment with the flow indica tor pointing downstream in the direc tion of flow No response to flow from sensor assembly No power Turn on power to the flow meter Flow profile distortion...

Страница 12: ...ts com Or contact Customer Service at service sierrainstruments com Email or 800 866 0200 or 831 373 0200 in the US or 31 0 20 6145810 in Europe Return shipments to USA Headquarters Sierra Instruments...

Страница 13: ...DC 300 mA Output Signal Linear 0 5 VDC or 0 10 VDC proportional to mass flow rate 1000 Ohms minimum load resistance or linear 4 20 mA proportional to mass flow rate 400 Ohms maximum resistance Perform...

Страница 14: ...ite Signal 3 Red DC input Power 4 N C 5 N C 6 Green Power Ground 7 Brown or Orange Bridge Black Connector Female Mating Connector Solder Side No Color Signal 1 Red DC input Power 2 White Signal 3 Blac...

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