Bacharach Hi Flow Owner's Manual

HI FLOW® Sampler

Natural Gas

Leak Rate Measurement

Instruction 0055-9017

Operation & Maintenance

Rev. 5 – June 2010

Product Leadership • Training • Service • Reliability

A

WARRANTY

Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in
material and manufacture and will conform substantially to Bacharach Inc.’s applicable specifications.
Bacharach’s liability and Buyer’s remedy under this warranty are limited to the repair or replacement, at
Bacharach’s option, of this Product or parts thereof returned to Seller at the factory of manufacture and
shown to Bacharach Inc.’s reasonable satisfaction to have been defective; provided that written notice of
the defect shall have been given by Buyer to Bacharach Inc. within one (1) year after the date of delivery
of this Product by Bacharach, Inc.

Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach’s liability and
Buyer’s remedy under this warranty of title are limited to the removal of any title defects or, at the
election of Bacharach, to the replacement of this Product or parts thereof that are defective in title.

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY
AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II)
ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT
ARISING FROM BACHARACH’S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be
limited to those provided herein to the exclusion of any and all other remedies including, without limita­tion incidental or consequential damages. No agreement varying or extending the foregoing warranties,
remedies or this limitation will be binding upon Bacharach, Inc. unless in writing, signed by a duly
authorized officer of Bacharach.

Register Your Warranty by Visiting

www.mybacharach.com

Declaration of Conformity

Manufacturer’s name: Bacharach, Inc.

Manufacturer’s address: 621 Hunt Valley Circle
New Kensington, PA 15068-7074

European operations: Bacharach Europe
Sovereign House, Queensway
Leamington Spa
Warwickshire CV31 3JR
United Kingdom

Product name: Hi Flow Sampler
conforms to the following specifications:
EMC Directive 61326:1998
IEC 61000-4-3: Radiated Immunity
IEC 61000-4-2

Notice:

Product improvements and enhancements are continuous; therefore the specifications and
information contained in this document may change without notice.

Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this material.

No part of this document may be photocopied, reproduced, or translated to another language
without the prior written consent of Bacharach, Inc.

Copyright © 2010, Bacharach, Inc., all rights reserved.
BACHARACH
trade names, service marks and logos referenced herein belong to their respective owners.

®

and HI FLOW® are registered trademarks of Bacharach, Inc. All other trademarks,

Instruction 0055-9017

Hi Flow Sampler Contents

Table of Contents

1 Introduction........................................................................................ 1

1.1 General Description................................................................................................. 1

1.2 Material Supplied .................................................................................................... 2

1.3 Why Use the Hi Flow Sampler?................................................................................ 2

1.4 Control Unit Description .........................................................................................3

1.5 Top Panel Connections & Controls .......................................................................... 3

2 Technical Data .................................................................................... 5

3 Operation............................................................................................ 7

3.1 Operating Precautions (Please Read)....................................................................... 7

3.2 Battery Connection ................................................................................................. 7

3.3 Sampling Hose & Attachment Connections.............................................................. 8

3.4 Grounding...............................................................................................................9

3.5 Attachments.......................................................................................................... 10

3.5.1 Flange Strap (34", 80" & 137") ................................................................. 10

3.5.2 Beveled Nozzle Tool (6.5" & 24")............................................................... 10

3.5.3 Capture Bag............................................................................................ 11

3.5.4 Disposable Bags with Nozzle ................................................................... 11

3.5.5 Bellows Tool ............................................................................................ 11

3.5.6 Claw Tool ................................................................................................ 12

3.5.7 3-Port Background Gas Sampler ............................................................. 12

3.6 Turning ON the Hi Flow Sampler ........................................................................... 12

3.7 Turning OFF the Hi Flow Sampler ......................................................................... 13

3.8 Selecting the Basic or Expanded Menu Mode......................................................... 13

3.8.1 Basic Main Screen................................................................................... 15

3.8.2 Expanded Main Screen ........................................................................... 16

3.9 Menu System ........................................................................................................17

3.10 Battery Status .......................................................................................................18

3.11 Calibration Menu ..................................................................................................18

3.12 Set Flow Units – lpm or cfm................................................................................... 18

3.13 Menu Mode – Basic or Expanded........................................................................... 19

3.14 Operating Mode – Automatic or Manual................................................................. 19

3.14.1 Automatic 2-Stage Measurement Mode ................................................... 19

3.14.2 Manual Measurement Mode .................................................................... 20

3.14.2.1 Manual 2-Stage Mode ........................................................... 20

3.14.2.2 Manual 1-Stage Mode ........................................................... 21

3.15 Access Records...................................................................................................... 22

3.15.1 Send Records .......................................................................................... 22

3.15.2 View Records........................................................................................... 24

3.15.3 Erase Records ......................................................................................... 24

3.16 Importing Saved Data into a Spreadsheet .............................................................. 25

3.17 Access Test IDs ..................................................................................................... 27

3.17.1 Select Test IDs ........................................................................................27

3.17.2 Edit Test IDs ........................................................................................... 28

3.17.3 Send Test IDs.......................................................................................... 29

3.17.4 Erase Test IDs......................................................................................... 30

3.18 Making a Leak Rate Measurement......................................................................... 32

3.18.1 Leak Rate Measurement – Basic Menu Mode ........................................... 32

3.18.2 Leak Rate Measurement – Automatic 2-Stage Mode................................. 33

3.18.3 Leak Rate Measurement – Manual 2-Stage Mode..................................... 36

3.18.4 Leak Rate Measurement – Manual 1-Stage Mode..................................... 38

3.19 Message Line......................................................................................................... 40

3.20 GPS Data ..............................................................................................................41

3.21 Barcode Scanner Data........................................................................................... 42

4 Calibration ........................................................................................ 43

Instruction 0055-9017

i

Contents Hi Flow Sampler

4.1 View Calibration Dates ..........................................................................................43

4.2 Gas Calibration Equipment Setup .........................................................................43

4.3 Check Calibration Procedure .................................................................................44

4.4 Gas Calibration Procedure .....................................................................................45

4.5 Calibration Amplifier Gain Check ..........................................................................47

4.6 Erase Calibration Procedure ..................................................................................47

5 Maintenance ......................................................................................49

5.1 Electrostatic Discharge Precautions .......................................................................49

5.2 Charging the Battery Pack .....................................................................................50

5.3 Removing the Cover ...............................................................................................51

5.4 Replacing the Internal Filters.................................................................................52

5.4.1 Leak-Gas Filter........................................................................................52

5.4.2 Leak-Gas Sensor Filter ............................................................................53

5.4.3 Background-Gas Sensor Filter .................................................................53

5.5 Gas Sensor Replacement .......................................................................................54

5.6 Pump Replacement ................................................................................................55

5.7 Flow Rate Verification ............................................................................................56

5.8 Setting Date and Time ...........................................................................................59

5.9 Resetting the Microprocessor .................................................................................60

6 Troubleshooting .................................................................................61

6.1 Instrument Repair .................................................................................................61

6.2 Troubleshooting Guide ..........................................................................................61

6.3 Error Codes in Saved Test Records ........................................................................63

7 Parts & Service ..................................................................................65

7.1 Replacement Parts .................................................................................................65

7.2 Optional Accessories..............................................................................................65

7.3 Service Centers......................................................................................................66

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Instruction 0055-9017

Hi Flow Sampler Introduction

1 Introduction

1.1 General Description

The Hi Flow Sampler is portable, intrinsically safe, battery-powered
instrument designed to determine the rate of gas leakage around various
pipefittings, valve packings, and compressor seals found in natural gas
transmission, storage, and compressor facilities.

A component’s leak rate is measured by sampling at a high flow rate so
as to capture all the gas leaking from the component along with a certain
amount of surrounding air. By accurately measuring the flow rate of the
sampling stream and the natural gas concentration within that stream,
the gas leak rate can be calculated using Equation 1. The instrument
automatically compensates for the different specific gravity values of air
and natural gas, thus assuring accurate flow rate calculations.

Instruction 0055-9017

Leak = Flow x (Gas

sample

– Gas

background

where:
Leak = rate of gas leakage from source (cfm)
Flow = sample flow rate (cfm)
Gas
Gas

= concentration of gas from leak source (%)

sample

background

= background gas concentration (%)

To ensure that the instrument is capturing all the gas that is escaping
from the component, two measurements are performed at two different
flow rates. The first measurement is taken at the highest possible flow
rate, followed by a second measurement at a flow rate that is
approximately 70–80% of the first. If the two calculated leak rates are
within 10% of each other, then it can be assumed that all gas has been
captured during the test.

For those mathematicians who are wondering how both calculations can
be the same with different flow rates, note that the measured CH
the lower flow rate will be higher due to less air being drawn in with the
sample, thus balancing out the lower flow rate.

The instrument is packaged inside a backpack, thus leaving the
operator’s hands free for climbing ladders or descending into manholes.

The instrument is controlled by a handheld unit consisting of an LCD
and a 4-key control pad, which is attached to the main unit via a 6 foot
coiled cord.

The gas sample is drawn into the unit through a flexible 1.5 inch I.D.
hose. Various attachments connected to the end of the sampling hose
provide the means of capturing all the gas that is leaking from the
component under test.

The main unit consists of an intrinsically safe, high-flow blower that
pulls air from around the component being tested through a flexible hose
and into a gas manifold located inside the unit. The sample is first
passed through a venturi restrictor where the measured pressure
differential is used to calculate the sample’s actual flow rate. Next, a
portion of the sample is drawn from the manifold and directed to a
combustibles sensor that measures the sample’s CH

) x 10–2 Eq. 1

level at

4

concentration in

4

1

Introduction Hi Flow Sampler

the range of 0.05 to 100% gas by volume. A second identical
combustibles sensor channel measures the background CH

level within

4

the vicinity of the leaking component. The final element in the sampling
system is a blower that exhausts the gas sample back into the
atmosphere away from the sampling area.

The measured flow rate and the measured CH

levels (both leak and

4

background levels) are used to calculate the leak rate of the component
being tested, with all measured and calculated values being displayed on
the hand-held control unit.

1.2 Material Supplied

 High Flow Sampler Unit
 Backpack
 6 Foot, 1.5 Inch Hose Assembly
 Battery Pack (Qty. 2)
 Battery Charger w/ Power Supply
 Control Unit with LCD and 4-button keypad
 Assortment of Attachments (for complete capture of the gas leak)

Flange Strap 34", 80", and 137"
Capture Bag 36" x 36"
Beveled Nozzle 6.5" and 24"
Bag Nozzle w/ box of disposable bags
Bellows Tool
Claw Tool
3-Port Background Gas Sampler

1.3 Why Use the Hi Flow Sampler?

 Allows ranking of gas leaks in leak-rate order
 Allows users to determine if the potential savings in lost gas by

repairing a leak

 Allows users to determine payback periods for particularly

expensive repairs

 Allows more cost-effective use of your maintenance budget
 Identifies problem areas
 Determines baseline leakage conditions
 Provides permanent record of leakage and repair
 Greenhouse gas credits
 Pays for itself in recovered gas

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Instruction 0055-9017

Hi Flow Sampler Introduction

1.4 Control Unit Description

The control unit consists of an 8 line by 20 character LCD and the four
pushbuttons.

Figure 1-1. Control Unit

1.5 Top Panel Connections & Controls

The top panel contains the following items:

 SCANNER – Bar code scanner input
 COMPUTER – RS232 communications port for downloading stored

test data to an external computer

 Leak Gas Inlet – Main hose connection used to collect gas from

leak source

 BACKGROUND Gas Inlet – Gas hose connection used to sample

background levels of CH

 GAS Inlet – Calibration gas connection
 ON/OFF Switch – Turns unit ON and OFF

Figure 1-2. Top Panel Connections

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Instruction 0055-9017

3

Introduction Hi Flow Sampler

Notes:

4

Instruction 0055-9017

Hi Flow Sampler Technical Data

2 Technical Data

Information Displayed .......... - Date and Time

- Battery voltage

- Sampling flow rate in cfm

- Background gas concentration in ppm or % by volume

- Leak concentration in ppm or % by volume

- Leak rate in cfm

- Percent difference between leak rate measurements #1 and #2

- Latitude, Longitude, Altitude, and Time of Fix, when the
optional GPS receiver is attached

Display................................. 8 line by 20 character LCD



Pushbutton Controls ............ - I/O

-

-

- ESC (Escape)

Communication.................... Three DB9 connectors providing serial data transfer at 115200

baud to a personal computer, bar code reader, and GPS receiver

Measured Values.................. - Sampling flow rate

- Background gas concentration

- Sample gas concentration

- Battery voltage

Calculated Values ................ - Leak concentration corrected for background gas level

- Leak rate

- Percent difference between leak rate measurements #1 and #2

Measurable Leak Rate .......... 0.05 to 8.00 SCFM (1.42 to 226 LPM)

0.05 to 6.00 SCFM (1.42 to 170 LPM)

Accuracy of Calculated

Leak Rate ............................. ±10% of reading

Temperature:

Operating .......................... 0 to 50 °C (32 to 122 °F)

Storage.............................. –40 to 60 °C (–40 to 140 °F)

Humidity .............................. 5 to 95% RH (non-condensing)

Sampling Flow Rate:

Maximum.......................... 10.5 SCFM (297 LPM) at full battery charge

Operating Flow Points ....... Initial flow approx. 10 SCFM (283 LPM)

Second flow approx. 8 SCFM (226 LPM)

(The second flow rate is 25% of the initial flow)

Measurement Method........ Differential pressure across restriction

Accuracy ........................... ±5% of reading

(Enter)



(Up Arrow)



(Down Arrow)

Instruction 0055-9017

5

Technical Data Hi Flow Sampler

Natural Gas Sensor:

Detection Method...............Catalytic oxidation / Thermal conductivity

Range:

Catalytic oxidation......... 0 to 5% by volume methane

Thermal conductivity ..... 5 to 100% by volume methane

Accuracy............................±5% of reading or 0.02 % methane, whichever is greater

Battery:

Type ..................................Intrinsically Safe NiMH rechargeable pack

Voltage ..............................4.8 V, max.

Recharge Time ...................8 to 10 hours

Run Time........................... >4.5 hours continuous operation @ 20 °C (68 °F)

Memory ................................Stores up to 1000 individual test parameters

Dimensions ..........................18L x 12W x 7H inches (457 x 305 x178 mm)

Weight ..................................20 lbs (0.9 kg)

Agency Approvals .................Designed to be intrinsically safe for use in hazardous locations

Class I, Division 1, Groups A, B, C & D in North America

CAN/CSA-C22.2 No. 157 – (June 1992)

ANSI (June 27, 2002)/UL913-2002
Intrinsically Safe Apparatus and Associated Apparatus for use in
Class I, Division 1, Hazardous (Classified) Locations

CE Mark – See this manual’s inside front cover for Declaration of
Conformity statement

6

Instruction 0055-9017

Hi Flow Sampler Operation

3 Operation

3.1 Operating Precautions

(Please Read)

To ensure that the gas sensors are properly zeroed at startup, the Hi
Flow Sampler must be turned ON in clean air (free of combustible gases
or vapors).

Calibrate the instrument about every 30 days to assure its accuracy. The
frequency of calibration, however, may change depending on how often
the instrument is used and the amount of gas that was sampled. Create
a maintenance log to keep track of when an instrument was calibrated,
and then use this log to help develop a calibration schedule. For
example, an instrument that fails its calibration after only being
calibrated a single time should be calibrated more often.

Important: Avoid sampling leaded gasoline vapors, or gases or vapors that

contain silicones or sulfur compounds. Tetraethyl lead, silicones, and
sulfur compounds can form contaminating compounds on the sensor
element (poison the sensor), with resulting loss in sensitivity.

Always purge the instrument with clean air after testing. This removes
combustibles from the sensor chambers and prolongs the life of the
sensors.

3.2 Battery Connection

WARNING: Explosion hazard! DO NOT connect or disconnect the battery in

an unsafe atmosphere.

The instrument’s power cord is located inside the backpack’s right-side
pocket. Insert a battery pack into this pocket and connect it to the power
cord.

Figure 3-1. Battery Pack Connection

Instruction 0055-9017

7

Operation Hi Flow Sampler

3.3 Sampling Hose & Attachment Connections

Connect the sampling hose to the instrument’s leak-gas inlet by
clamping the hose to the inlet as shown in Figure 3-2. Also connect the
background gas sampling hose to the unit’s BACKGROUND inlet.

Figure 3-2. Hose and Attachment Connections

The standard sampling hose is 6 foot long. If a longer length is needed,
the optional 12 foot hose (P/N 0055-0287) can be ordered, or additional
sections of hose can be added by simply clamping them together along
with connecting together the background-gas hose.

Choose an attachment (refer to Section 3.5 Attachments) that will capture
the entire leak and attach it to the end of the hose.

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Instruction 0055-9017

Hi Flow Sampler Operation

3.4 Grounding

WARNING: To prevent the possibility of a static discharge, the Hi Flow

Sampler should be grounded while conducting a leak test.

Attach the unit’s grounding clamp to the nearest earth ground.

Tip: When not in use, the grounding clamp can be stored by attaching it to

one of the shoulder straps.

Figure 3-3. Grounding Clamp

Instruction 0055-9017

9

Operation Hi Flow Sampler

3.5 Attachments

A variety of attachments are available for the Hi Flow Sampler that
simplifies the task of capturing the entire gas leak. Choose the
appropriate attachment for the type of component being tested from the
ones listed below, and then connect it to the end of the instrument’s
main sampling hose.

3.5.1 Flange Strap (34", 80" & 137")

Flange leaks can be captured by wrapping this attachment around the
edge of the flange, and securing in place using the two Velcro strips.

Attach the Hi Flow Sampler’s main sampling hose to the flange strap by
simply pushing the end of the hose into the attachment’s hose coupling.
A click should be heard when the hose has been successfully connected.
Release the hose by pushing in the coupling’s release mechanism.

3.5.2 Beveled Nozzle Tool (6.5" & 24")

For simple pin-hole type leaks, position this attachment directly over the
leak source.

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Instruction 0055-9017

Hi Flow Sampler Operation

3.5.3 Capture Bag

This reusable capture bag measures 36" x 36" and can be used to
completely surround a component that may have multiple leak sources,
or contains a leak source that is difficult to pinpoint or reach.

Attach the Hi Flow Sampler’s main sampling hose to the bag by simply
pushing the end of the hose into the bag’s hose coupling. A click should
be heard when the hose has been successfully connected. Release the
hose by pushing in the coupling’s release mechanism.

Use the draw strings to close up the end of the bag. DO NOT, however,
completely close off the bag – allow air to flow into the bag so as to
replace the volume of gas and air being removed during the test.

3.5.4 Disposable Bags with Nozzle

These disposable capture bags measure 38" x 60" and can be used to
completely surround a component that may have multiple leak sources,
or contains a leak source that is difficult to pinpoint or reach.

When using a disposable bag to surround the leak source, insert the bag
nozzle into the bag to take a gas sample.

DO NOT completely close off the bag – allow air to flow into the bag so as
to replace the volume of gas and air being removed during the test.

3.5.5 Bellows Tool

Instruction 0055-9017

11

Operation Hi Flow Sampler

This tool is useful in capturing leaks in valve stems and small fittings.

3.5.6 Claw Tool

Use this tool when the leak source is spread out over a narrow area,
such as a crack in a pipe, square flanges, and cylinder heads.

3.5.7 3-Port Background Gas Sampler

Attaches to the end of the background gas sample hose to give better
average background gas readings.

3.6 Turning ON the Hi Flow Sampler

12

Instruction 0055-9017

Hi Flow Sampler Operation

With the Hi Flow Sampler located in an area containing clean air (no
combustible gases or vapors), turn ON the instrument by first pulling up
the ON/OFF switch and then moving it to its ON position.

WARNING: Turning ON the instrument in air contaminated with

combustible gas will cause false readings to occur. Use one of Bacharach’s
portable gas detection instruments to sample the surrounding area for
levels of combustible gas before turning ON the instrument.

An initial banner screen is first displayed for 3 seconds that shows the
instrument’s name, software version, and the software’s Month, Day,
Year, and Time of creation.

B a c h a r a c h , I n c .

H i F l o w S a m p l e r

v e r 1 . 4 0

N o v 1 3 2 0 0 4 1 1 : 2 0

After the banner screen is displayed, the sensors are automatically
zeroed to ambient conditions. Zeroing time is dependent on the
temperature of the sensors, and whether there is residual gas present
inside the sensor chambers. If a sensor fails to zero, a message appears
at the bottom of the LCD describing the cause of the failure. Refer to
Section 6 Troubleshooting for possible causes and remedies for this
failure.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0

Z e r o i n g S e n s o r s

P l e a s e W a i t . . .

[ 0 0 0 1 ] ( M ) S - -

After the sensors are zeroed, either the instrument’s Basic or Expanded
Main Screen appears (refer to Section 3.8). The example below shows the
Basic Main Screen.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0
B a c k ( % ) 0 . 0 0
L e a k ( % ) 0 . 0 0
L e a k ( N o t A v a i l . )
S p e e d ( L O < > H I )

S t a r t

[ 0 0 0 1 ] ( M ) S - -

T h e a r r o w s y m b o l s o n t h e l e f t i n d i c a t e t h a t
t h e r e a r e m o r e i t e m s t o v i e w a b o v e a n d / o r
b e l o w t h e c u r r e n t d i s p l a y .

P r e s s k e y s t o v i e w a d d i t i o n a l i t e m s .

3.7 Turning OFF the Hi Flow Sampler

Turn OFF the unit by simply pulling up the ON/OFF switch and moving
it to its OFF position.

3.8 Selecting the Basic or Expanded Menu Mode

Instruction 0055-9017

13

Operation Hi Flow Sampler

Select the Basic or Expanded Menu Mode as follows:

1. From either the Basic or Expanded Main Screen, select Menu >

Menu Mode.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0
C a l i b r a t i o n
S e t F l o w U n i t s

M e n u M o d e

[ 0 0 0 1 ] ( M ) S - -

2. Highlight the desired menu mode, and then press the I/O key to

select that mode.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0

B a s i c M e n u

E x p a n d e d M e n u

[ 0 0 0 1 ] ( M ) S - -

3. Press ESC to return to the Main Screen.

Refer to Sections 3.8.1 and 3.8.2 for detailed descriptions of the
information contained in the Basic and Expanded Main Screens.

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Instruction 0055-9017

Hi Flow Sampler Operation

3.8.1 Basic Main Screen

Date and Time: Date displayed as
mm/dd/yy, while time is displayed in a 12­hour format. The date and time are set per
Section 5.8.

Btry(V): Battery voltage

Flow(lpm): Sample flow rate in either

liters/min or cu.ft./min.

: GPS (Global Positioning System) icon

appears when instrument detects that a GPS
receiver is connected to the unit’s GPS port

: Barcode icon appears when the instrument

detects that a barcode reader wand is
connected to the unit’s SCANNER port

: Battery status icon (refer to Section 3.10)

Back(%): Measured background gas level in

[0001]: Current Test ID number

either percent-by-volume or ppm

(A)or (M): Automatic or Manual mode (refer to

Leak(%): Measured natural gas leak

Section 3.14)

concentration at the current sample flow rate
in either percent-by-volume or ppm

Leak(lpm): Calculated leak rate in either
liters/min or cu.ft./min.*

Speed(LO<––––|>HI): Blower speed indicator.

Start / Stop: Select to Start and Stop a test**

S--: Standby

-1-: Measurement #1 (maximum flow rate)

--2: Measurement #2 (reduced flow rate)

Message Line: Various messages appear
during operation describing the current
function being performed, or errors that have
occurred (refer to Section 3.19)

Menu: Select to display the first of several
submenus (refer to Section 3.9)**

* “Not Avail.” is displayed when a value cannot be calculated from available information.
** Selections are made by using the  keys to highlight the desired function, and then

pressing the I/Okey to activate that function.

Instruction 0055-9017

15

Operation Hi Flow Sampler

3.8.2 Expanded Main Screen

Date and Time: Date displayed as
mm/dd/yy, while time is displayed in a 12­hour format. The date and time are set per
Section 5.8.

Save: Select to save all current measurement
parameters in memory**

Start / Stop: Select to Start and Stop a test**

Lat(°): Latitude in degrees*

Lon(°): Longitude in degrees*

Alt(ft): Altitude in feet*

Fix(sec): Time Of Fix between –1 and

−10 seconds (time lag between the received
GPS signal and the displayed values of
latitude, longitude, and altitude)*

Btry(V): Battery voltage

#1 – #2(%): Difference between test measure-

ments #1 and #2 in percent*

Flow(lpm): Sample flow rate in either
liters/min or cu.ft./min.

Back(%): Measured background gas level in
either percent-by-volume or ppm

Leak(%): Measured natural gas leak
concentration at the current sample flow rate
in either percent-by-volume or ppm

Leak(lpm): Calculated leak rate in either
liters/min or cu.ft./min.*

Menu: Select to display the first of several
submenus (refer to Section 3.9)**

: GPS (Global Positioning System) icon

appears when instrument detects that a GPS
receiver is connected to the unit’s GPS port

: Barcode icon appears when the instrument

detects that a barcode reader wand is
connected to the unit’s SCANNER port

: Battery status icon (refer to Section 3.10)

[0001]: Current Test ID number
(A)or (M): Automatic or Manual mode (refer to

Section 3.14)

S--: Standby

-1-: Measurement #1 (maximum flow rate)

--2: Measurement #2 (reduced flow rate)

Message Line: Various messages appear
during operation describing the current
function being performed, or errors that have
occurred (refer to Section 3.19)

Speed(LO<––––|>HI): Blower speed indicator.

* “Not Avail.” is displayed when a value cannot be calculated from available information.
** Selections are made by using the  keys to highlight the desired function, and then

pressing the I/Okey to activate that function.

16

Instruction 0055-9017

Hi Flow Sampler Operation

3.9 Menu System

Selecting Menu from either the Basic or Expanded Main Screen provides
the user access to a system of submenus as shown in Figures 3-4 and 3-

5.

The items that are listed in the submenus depend on whether the
instrument is in its Basic or Expanded menu mode.

The functions listed are described in their associated sections of this
manual.

Figure 3-4. Basic Menu System

Figure 3-5. Expanded Menu System

Instruction 0055-9017

17

Operation Hi Flow Sampler

3.10 Battery Status

Battery status is displayed as a single battery icon shown in the lower­left hand portion of the LCD. Since the voltage curve of the battery pack
drops off rapidly towards the end of its charge, the Battery status icon is
useful only in showing when the battery pack is nearing depletion. It
does not show the pack’s remaining percentage-of-charge.

4.0 volts and above
(Shutdown imminent, less than 5 minutes of operating time remain)

3.11 Calibration Menu

Selecting Calibration from the Menu System allows the user to either:

1) calibrate the sensors, 2) verify calibration, 3) view dates on which
calibrations were performed, 3) view amplifier gain values (in
hexadecimal) of each sensor circuit, or 4) erase calibration.

A detailed description of each calibration function is provided in
Section 4 Calibration.

3.12 Set Flow Units – lpm or cfm

Selecting Set Flow Units from the Menu System allows the user to select
whether the flow rate is displayed in either lpm (liters per minute), or cfm
(cubic feet per minute).

Select the desired flow rate unit of measure as follows:

1. From the Main Screen, select Menu > Set Flow Units.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0
C a l i b r a t i o n

S e t F l o w U n i t s

M e n u M o d e

[ 0 0 0 1 ] ( M ) S - -

2. Highlight the desired units of measure and then press the I/O key.

1 1 / 2 2 / 0 4 0 9 : 4 5 : 3 0
c f m ( c u . f t . / m i n . )

l p m ( l i t e r s / m i n . )

18

[ 0 0 0 1 ] ( M ) S - -

3. Press ESC to return to the Main Screen.

Instruction 0055-9017