Agilent Technologies Flow Tracker 1000 Series Manual de operación

Agilent Technologies

Agilent

Flow Tracker Series

1000/2000

User Information

2 Flow Tracker 1000/2000 User Information

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

5183-4773

Edition

Second edition, May 2002

First edition, August 2000

Printed in USA

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610 USA

Safety Notices

CAUTION

A CAUTION notice denotes a haz-

ard. It calls attention to an operat-

ing procedure, practice, or the like

that, if not correctly performed or

adhered to, could result in damage

to the product or loss of important

data. Do not proceed beyond a

CAUTION notice until the indicated

conditions are fully understood and

met.

WARNING

A WARNING notice denotes a

hazard. It calls attention to an

operating procedure, practice, or

the like that, if not correctly per-

formed or adhered to, could result

in personal injury or death. Do not

proceed beyond a WARNING

notice until the indicated condi-

tions are fully understood and

met.

Agilent Flow Tracker Series 1000/2000

User Information

Agilent Technologies

Flow Tracker Series 1000/2000

The Agilent Flow Tracker 1000 and 2000 Series Gas

Chromatography flowmeters are designed to provide useful

flow information in one simple, reliable, and portable

instrument. The Flow Tracker 1000 has two operating modes:

Flow Mode and Gas Chromatography (GC) Mode. The Flow

Tracker 2000 has an additional Leak Detector Mode and

incorporates a separate, built in sampling pump and probe.

For indoor use only. This product should not be used in

hazardous locations. This product is rated as Safety Class III,

Installation category II, and Pollution Degree 2. If this

equipment is used in a manner not specified, the protection

of the equipment may be impaired. Agilent Technologies

assumes no liability for the customer’s failure to comply with

these requirements.

• Operating temperature range: 10—50°C.

• Operating humidity range: 0—90% RH (non-condensing).

• Maximum recommended altitude: 15,000 ft.

Electromagnetic compatibility

This device was tested and found to comply with the limits of

CISPR 11. These limits are designed to provide reasonable

protection against harmful interference in an installation. This

equipment generates, uses and can radiate radio frequency

energy and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio or

television reception, which can be determined by turning the

equipment off and on. The user is encouraged to try to correct

the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and the

receiver.

4 Flow Tracker 1000/2000 User Information

Flow Tracker Series 1000/2000

•Connect the equipment into an outlet on a circuit different

from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for

help.

Unauthorized modification or installation of this equipment

may invalidate the user’s ability to operate this equipment. This

ISM device complies with Canadian ICES-001. Cet appareil ISM

est conforme a la norme NMB-001 du Canada. This device is CE

marked for ISM Group 1, Class A equipment.

Flow Tracker Series 1000/2000

Flow Tracker 1000/2000 User Information 5

Installation

The Agilent Flow Trackers have standard 1/8-inch NPT (female)

inlet and outlet fittings as shown in Figure 1. To prevent

possible clogging of the internal structure, it is recommended

that a 20-micron filter be installed upstream of the flowmeter.

The unit is packaged with simple plastic hose barbs for your

convenience, however any fitting that is appropriate for the

application can be substituted.

Figure 1 Connections

RS-232 plug

Leak sampling probe

(Flow Tracker 2000 only)

AC adapter plug

Exhaust

Flow

Sample exhaust

(Flow Tracker 2000 only)

Probe receptacle

RS-232 jack

P1 100 psi

≤

6 Flow Tracker 1000/2000 User Information

Flow Tracker Series 1000/2000

Maximum operating line pressure is 100 PSIG (690 kPa). If

the line pressure is higher than 100 PSIG (690 kPa), a pressure

regulator must be used upstream from the flowmeter to reduce

the pressure to 100 PSIG (690 kPa) or less. Although the

flowmeter’s operation is uni-directional, reversing the flow

direction will inflict no damage as long as the maximum

specified limits are not exceeded. The differential pressure

sensor used in the Flow Tracker is a very sensitive device

capable of detecting minute differences in pressure.

Power/batteries

Power is supplied by six (6) standard AA size batteries or by an

optional AC/DC adapter (Part number 5183-4781). New

batteries can provide power for several days of continuous

operation depending on the quality of the batteries and whether

the leak-sampling pump in model 2000 is used. The power

adapter jack is located as shown in Figure 1. A P-5 style,

positive center, 6-15 VDC adapter rated for at least 100 mA is

required.

CAUTION When installing fittings into the NPT ports, do not exceed 12 ft-lbs of

torque.

NOTE Use of pipe dope and sealants on the NPT ports can permanently damage

the flowmeter if they get into the flow stream. If a thread sealing tape is

required, avoid wrapping the first thread or two to minimize the possibility

of getting a piece of shredded tape into the flow stream. Always clean any

tape out of the threads that may come loose and enter the flow stream

before changing fittings.

CAUTION Exceeding the maximum specified line pressure may cause permanent

damage to the solid-state differential pressure transducer. Avoid

installations, such as snap acting solenoid valves upstream that apply

instantaneous high pressure to the flowmeter as permanent damage

to the differential pressure sensor could result.

Flow Tracker Series 1000/2000

Flow Tracker 1000/2000 User Information 7

Operation

Each operating mode displays all of the parameters and each

parameter has a button associated with it. The buttons for the

parameters that are common to all modes, GAS and MODE, are

labeled directly. The “dynamic parameters”, which are specific

to certain modes, are labeled on the display.

Dynamic parameters are either active or passive. Active

parameters are directly affected by the flow and are constantly

changing. Active parameters can be moved to the primary

display by pushing the button associated it. Passive parameters

are generally variables that require input from the user. The

passive parameters buttons are generally used to select the

value of the variable.

Basic operation

1ON—To turn the unit on, press and hold the ON button for

approximately a ½-second.

2ZERO—Pushing ZERO tares the flowmeter and provides it

with a reference point for zero flow. This is a very important

step in obtaining accurate measurements. It is good

practice to “zero” the flowmeter each time it is turned on. If

the flow reading varies significantly from zero after an initial

tare, give the unit a minute or so to warm up and re-zero it.

NOTE Should the unit fail to come on as expected, push the OFF button then

press and hold ON.

NOTE If possible, zero the unit near the expected operating pressure by

positively blocking the flow downstream of the flowmeter prior to pushing

the ZERO button. Zeroing the unit while there is any flow will directly

affect the accuracy by providing a false zero point. If in doubt about

whether the flow is positively blocked, remove it from the line and

positively block both ports before pressing the ZERO button.

8 Flow Tracker 1000/2000 User Information

Flow Tracker Series 1000/2000

3GAS—Pushing GAS scrolls through the gas list. The default

gas is air. The selected gas appears on the display under the

GAS button.

4MODE—Push MODE to switch between operating modes.

There are two operating modes (Flow and GC) in the

1000 Series flowmeters and three operating modes (Flow,

GC, and Leak) in the 2000 Series flowmeters. The default

operating mode is Flow.

5OFF—Push OFF to turn the unit power off from any operating

mode.

Low battery indicator The low battery (LO BAT) indicator

appears in the lower right corner of the display window (just

above the mode indicator) if the batteries run below a certain

voltage level.

RS-232 Output The Flow Tracker Series flowmeters are

equipped with a serial RS-232 output that toggles with the

selected operating mode. All parameters in the selected mode

are output in space-delimited format for data collection and

analysis. No special software is required; any terminal program,

such as HyperTerminal®, which comes packaged with all

NOTE It is very important that the gas being measured is selected to get an

accurate flow rate measurement.

CAUTION To avoid inaccurate readings, change the batteries when the LO BAT

indicator is displayed. Low power can result in inflated temperature

sensor readings, which affect the expected gas viscosity and mass

flow calculations.

NOTE The auto-off feature automatically shuts the flowmeter off after

approximately 5 minutes of continuous no flow (less than 4 mL/min)

condition. This applies only under battery power. The auto-off feature is

disabled when power is supplied via an AC to DC adapter.

Flow Tracker Series 1000/2000

Flow Tracker 1000/2000 User Information 9

Microsoft®Windows®operating systems will suffice. The 8-pin

Mini-DIN data output jack for RS-232 output is located as shown

in Figure 1. The included data cable plugs into this jack with the

flat on the cable plug towards the back of the flowmeter. If the

serial port on your computer is female, the flowmeter can

simply be plugged into your serial port via the 8-pin Mini-DIN to

DB-9 serial adapter cable included with the Flow Tracker. If the

serial port on your computer is male, a common double ended

female adapter cable is needed. For details on data collection

using the RS-232 output, go to the gas management section at

www.agilent.com/chem/supplies.

10 Flow Tracker 1000/2000 User Information

Flow Tracker Series 1000/2000

Flow mode

Figure 2 shows the parameters associated with flow mode.

Parameters

Gas absolute pressure The Agilent Flow Trackers use a sensor

to measure the line pressure of the gas flow being monitored.

This sensor references hard vacuum and accurately reads line

pressure both above and below local atmospheric pressure. The

Figure 2 Flow mode parameter buttons

Low-battery

indicator

Gas select

Mode

Power off

Zero (tare)

Gas temperature

Gas absolute pressure

Primary display

(default is

mass flow rate)

Volumetric flow rate

Mass flow rate

Power on

(press and hold)

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