HT Italia HTA105 User Manual
Copyright HT ITALIA 2018 Version EN 1.00 - 19/03/2018
ENGLISH
User manual
HTA105
EN - 1
Table of contents
1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 2
1.1. Preliminary instructions ..................................................................................................... 2
1.2. During use ........................................................................................................................ 2
1.3. After use ........................................................................................................................... 2
2. GENERAL DESCRIPTION ........................................................................................... 3
3. PREPARATION FOR USE ........................................................................................... 3
3.1. Initial checks ..................................................................................................................... 3
3.2. Instrument power supply ................................................................................................... 3
3.3. Storage ............................................................................................................................. 3
4. NOMENCLATURE ........................................................................................................ 4
4.1. Description of the instrument ............................................................................................ 4
4.2. Description of the display .................................................................................................. 4
4.3. Description of function keys .............................................................................................. 5
4.3.1. ON/OFF key ................................................................................................................................ 5
4.3.2. Key HLD ..................................................................................................................................... 5
4.3.3. Key /SET ................................................................................................................................. 5
4.3.4. Key ENT ..................................................................................................................................... 5
4.3.5. Key UNIT ................................................................................................................................. 5
4.3.6. Key UNIT ................................................................................................................................. 5
4.3.7. Key FLOW/TEMP ....................................................................................................................... 5
4.3.8. Key MAXMIN .............................................................................................................................. 5
4.3.9. Key MEAN .................................................................................................................................. 5
4.4. Instrument settings ........................................................................................................... 6
5. OPERATING INSTRUCTIONS ..................................................................................... 8
5.1. Measurement of air speed and temperature ..................................................................... 8
5.2. Measuring volumetric flow rate and air humidity ............................................................... 9
5.3. Calculating average values of quantities ........................................................................ 10
5.3.1. Average value calculated by spots ........................................................................................... 10
5.3.2. Average value calculated over time ......................................................................................... 11
6. MAINTENANCE ......................................................................................................... 12
6.1. General information ........................................................................................................ 12
6.2. Replacing the battery ...................................................................................................... 12
6.3. Cleaning the instrument .................................................................................................. 12
6.4. End of life ........................................................................................................................ 12
7. TECHNICAL SPECIFICATIONS ................................................................................ 13
7.1. Technical characteristics ................................................................................................ 13
7.1.1. General characteristics ............................................................................................................. 13
7.2. Environment .................................................................................................................... 14
7.2.1. Environmental conditions for use ............................................................................................. 14
7.3. Accessories .................................................................................................................... 14
8. ASSISTANCE ............................................................................................................. 15
8.1. Warranty conditions ........................................................................................................ 15
8.2. Assistance ...................................................................................................................... 15
HTA105
EN - 2
1. PRECAUTIONS AND SAFETY MEASURES
The instrument has been designed in compliance with the safety directive relevant to
electronic measuring instruments. In order to prevent damaging the instrument, please
carefully follow the procedures described in this manual and read all notes preceded by
symbol with the utmost attention.
Before and after carrying out measurements, carefully observe the following instructions:
Do not carry out any measurements in case gas, explosive materials or flammables are
present, or in humid or dusty environments.
Do not expose the measuring sensors found on the internal part of the telescopic probe
to mechanical shocks.
To prevent damaging them, do not touch the measuring sensors found on the
internal part of the telescopic probe.
When not in use, always cover the measuring sensors found on the internal part
of the telescopic probe with the available sliding metal protection.
Do not carry out any measurement in case you find anomalies in the instrument such
as deformation, substance leaks, absence of display on the screen, etc.
In this manual, and on the instrument, the following symbols are used:
Warning: observe the instructions given in this manual; improper use could
damage the instrument or its components.
1.1. PRELIMINARY INSTRUCTIONS
We recommend following the normal safety rules devised to protect the user against
dangerous situations and the instrument against incorrect use.
Only the accessories provided together with the instrument will guarantee safety
standards. They must be used only if in good conditions and replaced with identical
models, when necessary.
Do not test circuits exceeding the specified limits.
Check that the battery is correctly inserted.
Check that the LCD display gives indications consistent with the function selected.
1.2. DURING USE
Please carefully read the following recommendations and instructions:
CAUTION
Failure to comply with the caution notes and/or instructions may damage
the instrument and/or its components or be a source of danger for the
operator.
Use the instrument only in the measuring ranges indicated in this manual.
Avoid measuring in case external voltages are present, which could cause malfunctions
of the instrument.
While measuring, if the value or the sign of the quantity being measured remain
unchanged, check if the HOLD function is enabled.
1.3. AFTER USE
When measurement is complete, switch off the instrument.
If you expect not to use the instrument for a long period, remove the battery.
HTA105
EN - 3
2. GENERAL DESCRIPTION
The instrument has the following features:
Measurement of air speed through hot-wire sensor
Measurement of volumetric flow rate of air in m3/min (CMM) and ft3/min (CFM)
Measurement of air temperature in °C/°F with internal sensor
Measurement of relative humidity %RH with internal sensor
Measurement of Maximum and Minimum value
Calculation of average over time and by spots
Data HOLD
Display backlight
Auto Power OFF
Each of these functions can be selected by means of the corresponding key. The selected
quantity appears on the display with the indication of the measuring unit and of the
enabled functions. Function keys are also available; for their use, please refer to § 4.3.
3. PREPARATION FOR USE
3.1. INITIAL CHECKS
Before shipping, the instrument has been checked from an electric as well as mechanical
point of view. All possible precautions have been taken so that the instrument is delivered
undamaged.
However, we recommend generally checking the instrument in order to detect possible
damage suffered during transport. In case anomalies are found, immediately contact the
forwarding agent.
We also recommend checking that the packaging contains all components indicated in §
7.3. In case of discrepancy, please contact the Dealer.
In case the instrument should be returned, please follow the instructions given in § 8.
3.2. INSTRUMENT POWER SUPPLY
The instrument is supplied with 1x9V alkaline battery type NEDA 1604 IEC 6F22, included
in the package. When battery is nearly flat, symbol
“ ” appears on the display. Replace
the battery by following the instructions given in § 6.2.
3.3. STORAGE
In order to guarantee precise measurement, after a long storage time under extreme
environmental conditions, wait for the instrument to come back to normal condition (see §
7.2.1).
HTA105
EN - 4
4. NOMENCLATURE
4.1. DESCRIPTION OF THE INSTRUMENT
CAPTION:
1. Input terminal for
telescopic probe
2. LCD display
3. Key MEAN
4. Key MAXMIN
5. Key FLOW/TEMP
6. Key HLD
7. Key UNIT
8. Key
/SET
9. Key UNIT
10. Key ENT
11. Key ON/OFF
12. Hot-wire sensor
13. T emperature sensor
14. Sliding sensor
protection
15. Extensible telescopic
probe
16. Handle of telescopic
probe
Fig. 1: Description of the instrument
4.2. DESCRIPTION OF THE DISPLAY
CAPTION:
1. Speed measurement
icon
2. Active Settings
3. Active Data HOLD
4. Indication of
minutes/seconds
5. Indication of active Auto
Power OFF
6. Low battery symbol
7. Main display
8. Main display multiple
9. Speed measuring unit
10. Area measuring unit
11. Secondary display data
12. T emp/Humidity meas.
unit
13. Secondary display
14. Flow rate
measuring unit
15. Secondary display
multiple
16. Activation of MAX
and MIN
measurements
17. Activation of
average calculation
18. Active Average
calculation function
19. Indication of active
calculation of
average over time
Fig. 2: Display description
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