HT instruments HT2234N User Manual

ENGLISH

Instruction manual

© Copyright HT ITALIA 2011 Release EN 1.04 - 17/10/2011

HT2234N

Index:

1. PRELIMINARY AND SAFETY .................................................................................... 2

1.1. PRELIMINARY INSTRUCTION ............................................................................ 2

1.2. DURING USE ....................................................................................................... 2

1.3. AFTRE USE .......................................................................................................... 2

2. INSTRUMENT DESCRIPTION .................................................................................... 3

3. PREPARING TO USE ................................................................................................. 3

3.1. INITIAL ................................................................................................................. 3

3.2. SUPPLY

VOLTAGE .............................................................................................. 3

3.3. CALIBRATION ...................................................................................................... 3

3.4. STORAGE ............................................................................................................ 3

4. INSTRUMENT DESCRIPTION .................................................................................... 4

4.1. FRONT PANEL ..................................................................................................... 4

4.2. KEYS

DESCRIPTION ........................................................................................... 4

4.3. AUTOPOWEROFF FUNCTION ............................................................................ 5

4.4. EMITTING/RECEIVING UNIT ............................................................................... 5

5. OPERATING INSTRUCTIONS .................................................................................... 6

5.1. SPEED MEASURE WITHOUT CONTACT ........................................................... 6

5.2. SPEED MEASURE WITH CONTACT ................................................................... 7

5.3. SPEED MEASURES ON SURFACES (M/MIN, FT/MIN, YD/MIN) ............................... 8

5.4. EVENTS COUNTER WITH EXTERNAL LIGHT SOURCE .................................... 9

5.5. EVENTS COUNTER WITH INTERNAL EMITTING UNIT ................................... 10

5.6. MEASURES ON SLOW ROTATING OBJECTS ................................................. 10

6. MAINTENANCE ........................................................................................................ 11

6.1. GENERAL INFORMATION ................................................................................. 11

6.2. BATTERIES REPLACEMENT ............................................................................ 11

6.3. CLEANING ......................................................................................................... 11

6.4. END OF LIFE ...................................................................................................... 11

7. TECHNICAL SPECIFICATIONS ............................................................................... 12

7.1. TECHNICAL

CHARACTERISTICS ..................................................................... 12

7.2. GENERAL CHARACTERISTICS ........................................................................ 12

7.3. ACCESSORIES .................................................................................................. 12

8. SERVICE ................................................................................................................... 13

8.1. WARRANTY CONDITION .................................................................................. 13

8.2. AFTER-SALE SERVICE ..................................................................................... 13

EN - 1

HT2234N

1. PRELIMINARY AND SAFETY

This instrument conforms with safety Standard EN 61010-1 related to electronic measuring
instruments. For your own safety and to avoid damaging the instrument follow the
procedures described in this instruction manual and read carefully all notes preceded by

this symbol .
When taking measurements:

• Avoid doing that in rooms where explosive gas, combustible gas, steam or excessive
dust is present.

• Avoid doing that if you notice anomalous conditions such as breakages, deformations,
fractures, leakages of battery liquid, blind display etc.

For your own safety as well as that of the apparatus you are recommended to
follow the procedures described in this instruction manual and carefully read all

the notes preceded by the symbol .

1.1. PRELIMINARY INSTRUCTION

• Only the accessories supplied with the instrument guarantee compliance with the
safety standards. They must be in good conditions and must be replaced, if necessary,
with identical models.

• Do not effect any measurement under conditions beyond the limits specified in chapter

7.

• Check that batteries have been placed correctly.

1.2. DURING USE

Carefully read the following recommendations and instructions:

CAUTION

CAUTION

No compliance with the Warnings and/or Instructions may damage the
apparatus and/or its components or injure the operator.

If the symbol “
batteries following the procedure described under paragraph 6.2.

B

” is displayed during use interrupt testing and replace

CAUTION

1.3. AFTRE USE

• When the measurements are completed switch OFF the instrument.

• Remove batteries when the apparatus remains unused for long periods.

EN - 2

HT2234N

2. INSTRUMENT DESCRIPTION

The HT2234N meter performs the hereunder tests:

• RPM and RPS speed measures with and without contact

• m/min, ft/min and yd/min surface speed measures

• Events counter

• MAX/MIN/AVE functions

3. PREPARING TO USE

3.1. INITIAL

This instrument has been checked mechanically and electrically prior to shipment. Every
care has been taken to ensure that the instrument reaches you undamaged.

However, it is wise to carry out a rapid check in order to detect any possible damage which
might have been caused during transport. Should this be the case, immediately enter the
usual claims with courier.

Check the packaging contained according to packaging list reported in paragraph 7.3. In
case of discrepancies contact the dealer.

In the event of re-shipment of the equipment please follow the instructions reported in
chapter 8.

3.2. SUPPLY VOLTAGE

The instrument is battery supplied. It uses four battery model 1.5V AA UM3 type included
in the packaging. When the batteries are low the symbol "

batteries follow the instructions indicated in chapter 6.2.

3.3. CALIBRATION

The instrument fulfils the technical characteristics listed in this manual. The performance of
the specifications are guaranteed for one year.

3.4. STORAGE

In order to guarantee the accuracy of the measurements, after a period of storage in
extreme environment condition, wait for the time necessary so that the apparatus returns
to normal measuring conditions (see environments specifications paragraph 7.2).

B

" is displayed. To replace

EN - 3

HT2234N

4. INSTRUMENT DESCRIPTION

4.1. FRONT PANEL

11

10

9

1
2
3

4

LEGEND:

1. Reflecting tape.

2. Reflecting signal light beam.

3. Emitting / Receiving units.

4. UNIT key.

5. FUNCTION key.

6. START / STOP / HOLD key.

7. MAX/MIN/AVE symbols.

8. Low battery indication.

9. Start measure symbol.

10. Results display (bottom) and clock
display (top) for Hours:Minutes.

11. Emitting signal light beam.

8

5

7

HT2234N

4.2. KEYS DESCRIPTION

• UNIT key
Press ciclycally UNIT key to select the followed units:

RPM: speed measure without contact
RPM /: speed measure with contact

m/min: meter/minute
ft/min: feet/minute
yd/min: yards/minute
R/S: frequency (Hz)
NO.: events counter with external or internal light source

6

Fig. 1: front panel

EN - 4