TPI 719 Instruction Manual

719

Combustible Gas Leak
Detector Instruction Manual

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TABLE OF CONTENTS

A. INTRODUCTION

A. INTRODUCTION

1. Congratulations ..........................3

2. Product Description....................3

B. SAFETY CONSIDERATIONS ..............4

C. TECHNICAL DATA

1. Features and Benefits..................5

2. Product Applications ..................5

3. Specifications..............................6

D. MEASUREMENT TECHNIQUES

1. Congratulations!!

2. Product Description

1. Controls and Functions ..............7

2. Step by Step Procedures: ..........9

E. TROUBLE SHOOTING GUIDE ..........15

F. MAINTENANCE ................................15

G. ACCESSORIES ................................15

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A. INTRODUCTION

1. Congratulations!!

Thank you for purchasing TPI products. The 719 is easy
to use and is built to last. It is backed by a 3 year limit­ed warranty. Please remember to complete and return

your product warranty registration card.

2. Product Description

The ergonomically designed 719 is a hand-held, com­bustible gas leak detector. It is capable of finding com­bustible gas leaks in pipes, fittings, regulators, etc.

The 719 comes complete with the following accessories:

Carrying Pouch (A780)
Instruction Manual
Battery & Sensor (Installed & Calibrated)

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B. SAFETY CONSIDERATIONS

C. TECHNICAL DATA

WARNING: Please follow manufacturers test
procedures whenever possible. Do not place the
sensor cage located on the end of the gooseneck on

hot or in hot locations.

GENERAL GUIDELINES

ALWAYS

• Allow the 719 to warm up prior to use. This typically
takes 30 seconds but can take as long as 10 minutes
depending on ambient temperature.

• Turn your detector on in a “clean air” environment away
from the test location.

• Inspect the sensor cage to ensure it is securely attached.

1. Features and Benefits

NEVER

• Place the detector or sensor cage in or on a hot item.

2. Product Applications

Perform the following tests and/or measurements with the 719
leak detector:

• Locate combustible gas leaks in joints and fittings.

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C. TECHNICAL DATA

1. Features and Benefits

Auto Zero Automatically sets the sensor to

zero after warm up.

Mute Mutes the speaker and earphone alarm

Audible Alarm sounds when a combustible gas
Alarm with a methane concentration of 1000ppm

or more is measured

Visual Alarm LED’s located on the front and
Alarm in the sensor cage tip

2. Product Applications

Perform the following tests and/or measurements with the 719
leak detector:

• Locate combustible gas leaks in joints and fittings.

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3. Specifications

D. MEASUREMENT TECHNIQUES

Leak Detection Sensitivity (methane): 30ppm

Gases Detected (partial listing): Acetone, Acetylene, Alcohol,

Ammonia, Benzene, Butane, Ethanol, Ethylene Oxide, Gasoline,
Hexane, Hydrogen, Methane, Naphtha, Natural Gas, Paint Thinners,
Propane, Solvents

Warm Up Time: 30 seconds typical (Extended warm up time of 5
to 10 minutes may be required depending on ambient temperature.
For fastest warm up time do not store the 719 in cold tempera­tures)

Audible Leak Indication: Adjustable tic rate via side thumb wheel

Alarm Indication: Visual and audible

Goose Neck: 16” long with visual alarm indicator in sensor housing

1. Controls and Functions:

Operating Temperature: 32 to 122 (0 to 50)

Gooseneck Length: 16 inches

Battery Type: “C” size Alkaline (2)

Size: 9.4” x 2.9” x 2.2” (240mm x 74mm x 55mm)

Weight: 1 lb (454g)

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D. MEASUREMENT TECHNIQUES

1. Controls and Functions:

Push Buttons

Silences the alarm.

Thumb Controls speed of tick rate

Wheel

LED Indicators

On Green: Indicates the 719 is on.

Red: Indicates batteries need to
be replaced.

Alarm Flashes with tick rate. Stays on

steady when gas concentration is
over the alarm point (1000ppm).

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D. MEASUREMENT TECHNIQUES

D. MEASUREMENT TECHNIQUES

1. Controls and Functions (continued):

Instrument Layout

Sensor cage containing
the sensor and visual
alarm indicator

Speaker

Gooseneck

2. Step by Step Procedures:

WARNING!
Turn the 719 in a “clean air” environment away from the

test area.

1. Turn the 719 on by turning the thumbwheel counter clockwise.

The 719 will begin sounding a maximum tick rate and the

alarm will warble.

Allow the 719 to warm up. This typically takes 30 seconds

but can take as long as 10 minutes depending on the ambi-

ent temperature. As the 719 warms up, the alarm will stop

and the tick rate will reduce.

On Indicator

Earphone
Jack

Keypad

Alarm LED

Tick adjust wheel

2. After the warm up period is complete, use the thumbwheel to

set a consistent tick rate. The alarm LED will flash with the tick

rate. Approach suspected leak areas with the sensor until the

tick begins to increase. When the tick increases, do not move

the sensor from the area, rotate the TICK ADJUST slightly

counterclockwise to slow the ticking and continue to approach

the suspected leak area with the sensor. Continue to slow the

tick until the location of the leak is found. If the tick stops, the

concentration level has decreased. Move back in the opposite

direction to find the leak again.

3. If the leak concentration is above the alarm level the alarm will

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sound and LED’s located in the front panel and sensor cage

will flash.

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D. MEASUREMENT TECHNIQUES

2. Step by Step Procedures:

WARNING!
Turn the 719 in a “clean air” environment away from the

test area.

1. Turn the 719 on by turning the thumbwheel counter clockwise.

The 719 will begin sounding a maximum tick rate and the

alarm will warble.

Allow the 719 to warm up. This typically takes 30 seconds

but can take as long as 10 minutes depending on the ambi-

ent temperature. As the 719 warms up, the alarm will stop

and the tick rate will reduce.

2. After the warm up period is complete, use the thumbwheel to

set a consistent tick rate. The alarm LED will flash with the tick

rate. Approach suspected leak areas with the sensor until the

tick begins to increase. When the tick increases, do not move

the sensor from the area, rotate the TICK ADJUST slightly

counterclockwise to slow the ticking and continue to approach

the suspected leak area with the sensor. Continue to slow the

tick until the location of the leak is found. If the tick stops, the

concentration level has decreased. Move back in the opposite

direction to find the leak again.

3. If the leak concentration is above the alarm level the alarm will

sound and LED’s located in the front panel and sensor cage

will flash.

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E. Trouble Shooting

Problem Corrective Action

On LED has turned red Replace Batteries

instead of green

Tick rate inconsistent Replace batteries / sensor

F. Maintenance

Battery Replacement:

Depress the latch on the back housing and slide the cover down.

Replace batteries (2 x “C” alkaline) and reattach the cover.

G. Accessories

Sensor Replacement:

Turn the 719 off. Turn the sensor cage counter clockwise and remove

it. Unplug the old sensor and discard. Replace sensor and sensor cap.

Cleaning your 719:

Use a mild detergent and slightly damp cloth to clean the surfaces of

the 719.

For factory service please return your 719 to:

TPI / Attn: Service

9615 SW Allen Blvd. Suite 104

Beaverton, OR 97005

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G. Accessories

Replacement Sensor: A739

Replacement Sensor Cage: A709A

Soft Pouch: A780

Earphone: A710

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