General Tools LT2234C User Manual

LT2234C

User’s ManUal

NON-CONTACT

TACHOMETER

Please read this manual carefully and thoroughly before using this product.

TABLE OF CONTENTS

Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3

Key Features. . . . . . . . . . . . . . . . . . . . . . . . 4

Safety Instructions. . . . . . . . . . . . . . . . . . . 4

What’s in the Case . . . . . . . . . . . . . . . . . . . 4

Product Overview. . . . . . . . . . . . . . . . . . . . 5

Setup Instructions . . . . . . . . . . . . . . . . . . . 6

Operating Instructions. . . . . . . . . . . . 6 – 10

Making rpm Measurements . . . . . . . 6 –7

Storing and Recalling . . . . . . . . . . . 8 – 10

Measurements

Specifications . . . . . . . . . . . . . . . . . 11 – 12

Maintenance Tips. . . . . . . . . . . . . . . . . . . 12

Warranty Information. . . . . . . . . . . . . . . . 13

Return For Repair Policy . . . . . . . . . . . . . 14

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INTRODUCTION

Thank you for purchasing General Tools & Instruments’ Model
LT2234C Non-Contact Tachometer. Please read this user’s
manual carefully and thoroughly before using the instrument.

The LT2234C is a general-purpose handheld instrument that
can measure the rotational speed of a motor’s or generator’s
spinning shaft. It does so by bouncing a laser beam off a
piece of reflective tape affixed to the shaft and using an in­tegrated photocell to count the number of reflections pro­duced per minute. Measurements are displayed in real time
on a 0.7-in. (18mm) high backlit liquid-crystal display and
stored in memory. Up to 96 measurements of rpm can be
stored, indexed and recalled, along with the last value, the
minimum value and the maximum value of a series. Thanks
to its five-digit display and the use of a non-contact meas­urement technique, the tachometer can measure the speeds
of shafts spinning at up to 99,999 rpm.

The LT2234C is powered by three “AAA” batteries (included).

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KEY FEATURES

• Uses non-contact measurement technique and
autoranging

• Wide measurement range and high resolution

• Backlit 0.7-in. high display supports work in low light

• Stores and indexes up to 96 measurements

• Memorizes the last, minimum and maximum values
of a series of measurements

• One-handed operation

• Automatically powers off when not measuring,
extending battery life

• Durable ABS plastic housing

SAFETY INSTRUCTIONS

Spinning shafts and fast-moving belts can be dangerous. When
using the tachometer, take care not to let your fingers, hands,
hair or clothing make contact with moving parts.

WHAT’S IN THE CASE

The LT2234C comes fully assembled in a hard carrying case
along with fresh batteries, two 24 in. (600mm) long strips of
1/2 in. (12mm) wide adhesive reflective tape and this user’s
manual.

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PRODUCT OVERVIEW

Figure 1 shows all of the controls and indicators and other
physical features of the LT2234C. Familiarize yourself with
their positions before moving on to the setup procedure.

Fig. 1. The LT2234C’s controls and indicators and other

physical features

1-1 Reflective tape (on spinning shaft)
1-2 Reflected laser light (to internal photosensor)
1-3 Five-digit liquid-crystal display
1-4 Measure button
1-5 MEM button
1-6 Battery compartment cover (on back)

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