Bacharach High Flow Sampler User manual

HI FLOW®Sampler
For Natural Gas
Leak Rate Measurement
Instruction 0055-9017
Operation and Maintenance
Rev. 7 – July 2015
Product Leadership • Training • Service • Reliability

WARRANTY
Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufac-
ture 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
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.
Patent # 5,563,335 and 6,489,787.
Copyright © 2015, Bacharach, Inc., all rights reserved.
BACHARACH®and HI FLOW®are registered trademarks of Bacharach, Inc. All other trademarks,
trade names, service marks and logos referenced herein belong to their respective owners.

Hi Flow

Sampler Table of Contents
Instruction 0055-9017 3
Table of Contents
1INTRODUCTION ..............................................................................................................................................5
1.1 General Description and Use .........................................................................................................................5
1.2 Material Supplied ..........................................................................................................................................6
1.3 Control Unit Description................................................................................................................................6
1.4 Top Panel Connections and Controls.............................................................................................................7
1.5 Technical Data ...............................................................................................................................................8
2OPERATION ....................................................................................................................................................9
2.1 Operating Precautions...................................................................................................................................9
2.1.1 Limits of Use ..................................................................................................................................9
2.1.2 Calibration .....................................................................................................................................9
2.1.3 Sensor Flooding and Poisoning .....................................................................................................9
2.2 Battery Connection......................................................................................................................................10
2.3 Sampling Hose and Attachment Connections .............................................................................................10
2.4 Grounding....................................................................................................................................................11
2.5 Attachments ................................................................................................................................................11
2.5.1 Flange Strap (34", 80", and 137")................................................................................................12
2.5.2 Beveled Nozzle Tool (6.5" and 24").............................................................................................12
2.5.3 Capture Bag .................................................................................................................................12
2.5.4 Bellows Tool ................................................................................................................................13
2.5.5 Aluminum Crevice Tool ...............................................................................................................13
2.6 Turning ON the Hi FlowSampler ...............................................................................................................14
2.7 Turning OFF the Hi FlowSampler ..............................................................................................................14
2.8 Selecting the Basic or Expanded Menu Mode .............................................................................................15
2.8.1 Basic Main Mode.........................................................................................................................16
2.8.2 Expanded Main Mode .................................................................................................................17
2.9 Menu System...............................................................................................................................................18
2.10 Battery Status ..............................................................................................................................................19
2.11 Calibration Menu.........................................................................................................................................20
2.12 Set Flow Units – LPM or CFM ......................................................................................................................20
2.13 Menu Mode – Basic or Expanded................................................................................................................20
2.14 Operating Mode – Automatic or Manual ....................................................................................................20
2.14.1 Automatic 2-Stage Measurement Mode.....................................................................................21
2.14.2 Manual Measurement Mode ......................................................................................................22
2.15 Access Records ............................................................................................................................................23
2.15.1 Send Records ...............................................................................................................................23
2.15.2 View Records...............................................................................................................................25
2.15.3 Erase Records ..............................................................................................................................25
2.16 Importing Saved Data into a Spreadsheet...................................................................................................26
2.17 Access Test IDs.............................................................................................................................................28
2.17.1 Select Test IDs .............................................................................................................................28
2.17.2 Edit Test IDs.................................................................................................................................29
2.17.3 Send Test IDs ...............................................................................................................................29
2.17.4 Erase Test IDs ..............................................................................................................................31
2.18 Making a Leak Rate Measurement ..............................................................................................................32
2.18.1 Leak Rate Measurement – Basic Menu Mode ............................................................................32
2.18.2 Leak Rate Measurement – Automatic 2-Stage Mode .................................................................33
2.18.3 Leak Rate Measurement – Manual 2-Stage Mode......................................................................35
2.18.4 Leak Rate Measurement – Manual 1-Stage Mode......................................................................36
2.19 Message Line ...............................................................................................................................................38
3CALIBRATION ............................................................................................................................................... 41

Table of Contents Hi Flow

Sampler
4Instruction 0055-9017
3.1 View Calibration Dates................................................................................................................................ 41
3.2 Gas Calibration Equipment Setup ............................................................................................................... 41
3.3 Check Calibration Procedure ...................................................................................................................... 42
3.4 Gas Calibration Procedure .......................................................................................................................... 43
3.5 Calibration Amplifier Gain Check ................................................................................................................ 45
3.6 Erase Calibration Procedure ....................................................................................................................... 45
4MAINTENANCE............................................................................................................................................. 46
4.1 Electrostatic Discharge Precautions............................................................................................................ 46
4.2 Charging the Battery Pack........................................................................................................................... 46
4.3 Removing the Cover.................................................................................................................................... 47
4.4 Replacing the Internal Filters ...................................................................................................................... 48
4.4.1 Leak-Gas Filter ............................................................................................................................ 48
4.4.2 Leak-Gas Sensor Filter ................................................................................................................ 49
4.4.3 Background-Gas Sensor Filter..................................................................................................... 49
4.5 Gas Sensor Replacement ............................................................................................................................ 50
4.6 Pump Replacement..................................................................................................................................... 51
4.7 Flow Rate Verification................................................................................................................................. 52
4.8 Setting Date and Time................................................................................................................................. 55
4.9 Resetting the Microprocessor..................................................................................................................... 56
5TROUBLESHOOTING..................................................................................................................................... 57
5.1 Instrument Repair ....................................................................................................................................... 57
5.2 Troubleshooting Guide ............................................................................................................................... 57
SYMPTOM ........................................................................................................................................................... 57
PROBABLE CAUSE & REMEDY .............................................................................................................................. 57
5.3 Error Codes in Saved Test Records ............................................................................................................. 59
6PARTS & SERVICE ......................................................................................................................................... 61
6.1 Replacement Parts...................................................................................................................................... 61
6.2 Optional Accessories................................................................................................................................... 61
6.3 Service Centers ........................................................................................................................................... 62
7DECLARATION OF CONFORMITY .................................................................................................................. 63
∇∇∇

Introduction Hi Flow

Sampler
Instruction 0055-9017 5
1 Introduction
1.1 General Description and Use
WARNING: The High FlowSampler is not to be used in any application that is beyond
its intended purpose or beyond the scope of its specifications. Failure to follow this
warning can result in personal injury or damage to the equipment. For details on
appropriate use, refer to the general description, application, and operation discussions
in this manual.
WARNING: The High FlowSampler is not to be used as a safety device for the
personal protection of the user or others.
The Hi FlowSampler is a portable, intrinsically safe, battery-powered instrument
designed to determine the rate of gas leakage around various pipe fittings, valve
packings, and compressor seals found in natural gas transmission, storage, and
compressor facilities.
The Hi FlowSampler determines a component’s leak rate by sampling at a high flow
rate 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.
Leak = Flow x (Gas sample – Gas background) x 10–2 Eq. 1
where:
Leak = rate of gas leakage from source (cfm)
Flow = sample flow rate (cfm)
Gas sample = concentration of gas from leak source (%)
Gas 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.
CAUTION:Additional precautions and considerations are required when using the
instrument in natural gas streams of mixed composition. Refer to section 2.1 for
guidelines.
The instrument is packaged inside a backpack, thus leaving the operator’s hands free for
climbing ladders or descending into a confined space.
The instrument is packaged inside a backpack, thus leaving the operator’s hands free for
climbing ladders or descending into tight spaces.
The instrument is controlled by a handheld Control Unit consisting of an LCD and a 4-key
touch pad, which is attached to the main unit via a 6 foot coiled cord. The Control Unit
comes with two magnets which can be easily attached to a steel pipe, regulator box or
compressor for easy viewing. Alternately, the Control Unit can be used in conjunction
with the neck strap accessory.

Hi Flow

Sampler Introduction
6Instruction 0055-9017
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 an orifice 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 CH4concentration in the range of 0.05 to 100% gas by
volume. A second identical combustibles sensor channel measures the background CH4
level within 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 CH4levels (both leak and 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
•Bellows Tool
•Claw Tool
1.3 Control Unit Description
The control unit consists of an 8 line by 20 character LCD and the four pushbuttons.
Figure 1-1. Control Unit

Introduction Hi Flow

Sampler
Instruction 0055-9017 7
1.4 Top Panel Connections and Controls
The top panel contains the following items.
ON/OFF Switch Turns unit ON and OFF.
Computer Port 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.
GAS Inlet Calibration gas connection.
Background
Inlet Gas hose connection used to sample background levels of CH4.
Figure 1-2. Top Panel Connections

Hi Flow

Sampler Introduction
8Instruction 0055-9017
1.5 Technical Data
TABLE 1-1. TECHNICAL SPECIFICATIONS
Specification Description
Information
Displayed
•Date and Time
•Battery voltage
•Leak rate in cfm
•Sampling flow rate in cfm
•Leak concentration in ppm or % by volume
•Background gas concentration in ppm or % by
volume
•Percent difference between leak rate
measurements #1 and #2
Display 8 line by 20 character LCD
Pushbutton
Controls
I/O ↵(Enter)
∧
(Up Arrow)
∨
(Down Arrow)
ESC (Escape)
Communication Three DB9 connectors providing serial data transfer at 115200 baud to a personal
computer, or other peripheral device
Measured Values •Sampling flow rate
•
Battery voltage
•Sample gas concentration
•Background gas concentration
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 Calculated Leak Rate: ±10% of reading by volume methane
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 ≈10 SCFM (283 LPM). Second flow ≈8
SCFM (226 LPM). (The second flow rate is
approximately 75% of the initial flow)
Measurement Method................ Differential pressure across restriction
Accuracy...................................... ±5% of reading
Natural Gas Sensor Detection Method....................... Catalytic oxidation / Thermal conductivity
Range: Catalytic oxidation.......... 0 to 5% by volume methane
Range: Thermal conductivity ..... 5 to 100% by volume methane
Accuracy...................................... ±5% of reading or 0.02 % methane, whichever is greater
Battery Voltage............... 4.8 V, max.
Recharge Time ... 8 to 10 hrs
Type ..........Intrinsically Safe NiMH rechargeable pack
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 section 8 for
Declaration of Conformity statement.
∇∇∇

Hi Flow

Sampler Operation
Instruction 0055-9017 9
2 Operation
2.1 Operating Precautions
2.1.1 Limits of Use
The Hi Flow Sampler was developed for use on natural gas streams with high methane
content. After introduction and industry acceptance, the instrument has been applied to
additional areas in the natural gas industry, including upstream locations. These
locations potentially contain less methane as a percentage of the overall mixture. As
methane becomes less of the overall mixed gas stream, a response correction factor is
recommended.
The response correction factor modifies Equation 1 as follows, and must be determined
and applied by the user (to the measurements reported by the instrument):
Leak = (Flow x (Gas sample – Gas background) x 10–2) x k Eq. 2
where:
Leak = rate of gas leakage from source (cfm)
Flow = sample flow rate (cfm)
Gas sample = concentration of gas from leak source (%)
Gas background = background gas concentration (%)
k = response correction factor (user determined)
An alternative approach for use in mixed gas streams is to calibrate the instrument on
the actual gas, in which case the response correction factor (k) is not required.
The Hi Flow instrument includes a temperature sensor and compensates for changes in
density associated with temperature in the reported measurement. The Hi Flow does
not however measure absolute pressure and as a result does not compensate for the
effects of altitude.
2.1.2 Calibration
The instrument is calibrated to pure methane at the factory. Calibrate the instrument
about every 30 days to assure its accuracy. More frequent calibrations may be required
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. In the case of mixed gas
streams, it is recommended to calibrate prior to use each day.
2.1.3 Sensor Flooding and Poisoning
The Hi flow sensors operate in catalytic mode, from 0 up to 5% (by volume) methane
concentration, and in thermal conductivity mode from 5% up to 100% methane by
volume. The rapid introduction of high methane concentrations may inhibit the sensors
operation in catalytic mode by starving the catalytic reaction of oxygen. Flooding the
sensor in this way can result in erroneously low readings and prevent transition to
thermal conductivity mode. In cases where very large leaks are suspected (approaching
the limits of the instrument’s measurement range, 8SCFM) the Hi Flow should be turned
on sampling air adjacent to the leak and slowly moved toward the largest source of the
leak. Please refer to section 2.3 for specific details on the attachments provided for leak
capture.

Operation Hi Flow

Sampler
10 Instruction 0055-9017
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.
2.2 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 2-1. Battery Pack Connection
2.3 Sampling Hose and Attachment Connections
Connect the sampling hose to the instrument’s leak-gas inlet by clamping the hose to
the inlet as shown in Figure 2-2. Also connect the background gas sampling hose to the
unit’s BACKGROUND inlet.
Figure 2-2. Hose and Attachment Connections

Hi Flow

Sampler Operation
Instruction 0055-9017 11
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 2.5 Attachments) that will capture the entire
leak and attach it to the end of the hose.
2.4 Grounding
WARNING: To prevent the possibility of a static discharge, the Hi Flow

Sampler must
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 2-3. Grounding Clamp
2.5 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.
CAUTION: Attachments can have the effect of concentrating the leak. Ensure that
enough air is present when first sampling to support catalytic mode of the instrument.
Flooding the sensor with high concentrations of methane at startup can result in
erroneously low readings and prevent transition to thermal conductivity mode.

Operation Hi Flow

Sampler
12 Instruction 0055-9017
2.5.1 Flange Strap (34", 80", and 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.
Figure 2-4. Flange Strap
2.5.2 Beveled Nozzle Tool (6.5" and 24")
For simple pin-hole type leaks, position this attachment directly over the leak source.
Figure 2-5. Beveled Nozzle Tool
2.5.3 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.

Hi Flow

Sampler Operation
Instruction 0055-9017 13
Figure 2-6. Capture Bag
2.5.4 Bellows Tool
This tool is useful in capturing leaks in valve stems and small fittings.
Figure 2-7. Bellows Tool
2.5.5 Aluminum Crevice 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.
Figure 2-8. Aluminum Crevice Tool

Operation Hi Flow

Sampler
14 Instruction 0055-9017
2.6 Turning ON the Hi FlowSampler
With the Hi FlowSampler located in an area containing clean air (no combustible gases
or vapors), turn ON the instrument by flipping the ON/OFF switch to its ON position.
WARNING: To ensure that the gas sensors are properly zeroed at startup, the Hi Flow

Sampler must be turned ON in clean air. 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.
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.
After the sensors are zeroed, either the instrument’s Basic or Expanded Main Screen
appears (refer to Section 2.8). The example below shows the Basic Main Screen.
The arrow symbols on the left indicate that
there are more items to view above and/or
below the current display.
Press the ∧and ∨keys to view additional
items.
2.7 Turning OFF the Hi FlowSampler
Turn OFF the unit by flipping the ON/OFF switch to its OFF position.

Hi Flow

Sampler Operation
Instruction 0055-9017 15
2.8 Selecting the Basic or Expanded Menu Mode
Select the Basic or Expanded Menu Mode as follows:
1. From either the Basic or Expanded Main Screen, select Menu > Menu Mode.
2. Highlight the desired menu mode, and then press the I/O ↵key to select that
mode.
3. Press ESC to return to the Main Screen.
Refer to Sections 2.8.1 and 2.8.2 for detailed descriptions of the information contained
in the Basic and Expanded Main Screens.

Operation Hi Flow

Sampler
16 Instruction 0055-9017
2.8.1 Basic Main Mode
Date and Time: Date displayed as
mm/dd/yy
, while
time is displayed in a 12-hour format. The date and
time are set per Section 4.8.
Btry (V): Battery voltage
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.*
Speed (LO<––––|>HI): Blower speed indicator.
Start / Stop: Select to Start and Stop a test**
Menu: Select to display the first of several submenus
(refer to Section 2.9)**
:Battery status icon (refer to Section 2.10)
[0001]: Current Test ID number
(A) or (M): Automatic or Manual mode (refer to Section
2.14)
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
Section2.19: Message Line on page 38).
Calibration: Allows user to perform various calibration
functions, including calibrate, verify, view calibration
dates, view amplifier gain values, or erase calibration.
Set Flow Units: Select to set flow rate display to either
lpm (liters per minute), or cfm (cubic feet per minute).
Select Language:Select to set menu language to
English or Russian.
Menu Mode: Select to set menu to basic mode or
expanded mode.
* “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.

Hi Flow

Sampler Operation
Instruction 0055-9017 17
2.8.2 Expanded Main Mode
Date and Time: Date displayed as
mm/dd/yy
, while
time is displayed in a 12-hour format. The date and
time are set per Section 4.8.
Btry(V): Battery voltage
#1 – #2(%): Difference between test measurements #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.*
Speed (LO<––––|>HI): Blower speed indicator.
Save: Select to save all current measurement
parameters in memory**
Start / Stop: Select to Start and Stop a test**
Menu: Select to display the first of several submenus
(refer to Section 2.9)**
:Battery status icon (refer to Section 2.10)
[0001]: Current Test ID number
(A) or (M): Automatic or Manual mode (refer to Section
2.14)
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
Section2.19: Message Line on page 38).
Calibration: Allows user to perform various calibration
functions, including calibrate, verify, view calibration
dates, view amplifier gain values, or erase calibration.
Set Flow Units: Select to set flow rate display to either
lpm (liters per minute), or cfm (cubic feet per minute).
Select Language:Select to set menu language to
English or Russian.
Menu Mode: Select to set menu to basic mode or
expanded mode.
Operating Mode: Select to set operating mode to
automatic or manual mode.
Access Records: Select to send (to a PC), view (on LCD),
or erase all saved records.
Access Test IDs: Create a new Test ID, edit an old one,
send the Test IDs to a computer, or erase all existing
Test IDs.
* “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.

Operation Hi Flow

Sampler
18 Instruction 0055-9017
2.9 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 2-9 and 2-10.
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 2-9. Basic Menu System

Hi Flow

Sampler Operation
Instruction 0055-9017 19
Figure 2-10. Expanded Menu System
2.10 Battery Status
Battery status is displayed as a single battery icon shown in the lower-left 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. 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

Operation Hi Flow
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Sampler
20 Instruction 0055-9017
2.11 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
4) view amplifier gain values (in hexadecimal) of each sensor circuit, or
5) erase calibration.
A detailed description of each calibration function is provided in Section 3 Calibration.
2.12 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.
2. Highlight the desired units of measure and then press the I/O ↵key.
3. Press ESC to return to the Main Screen.
2.13 Menu Mode – Basic or Expanded
Selecting Menu Mode from the Menu System allows the user to select whether only the
most basic amount of information is displayed on the Main Screen (Basic Menu mode),
or if all available information is displayed (Expanded Menu mode).
Refer to Section 2.8 Selecting the Basic or Expanded Menu Mode for detailed
information on how to select the desired menu mode, and learn about what type of
information is displayed in each mode.
2.14 Operating Mode – Automatic or Manual
Note: The Operating Mode can only be selected if operating in the Expanded Menu
Mode. Refer to Section 2.8.
Selecting Operating Mode from the Expanded Menu System allows the user to set the
instrument’s operating mode to either Automatic or Manual.