HT HTA103 User manual

Copyright HT ITALIA 2017 Release EN 1.00 - 14/09/2017
ENGLISH
User manual

HTA103
EN – 1
Table of contents:
1.SAFETY PRECAUTIONS AND PROCEDURES ..........................................................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.................................................................................................................................. 3
3.2.Power supply..................................................................................................................... 3
3.3.Storage.............................................................................................................................. 3
4.NOMENCLATURE........................................................................................................4
4.1.Instrument description....................................................................................................... 4
4.2.Description of display ........................................................................................................ 4
4.3.Function key description.................................................................................................... 5
4.3.1.ON/OFF key................................................................................................................................ 5
4.3.2.UNIT/ key ................................................................................................................................ 5
4.3.3.JKT key....................................................................................................................................... 5
4.3.4.MAX and MIN key....................................................................................................................... 5
4.3.5.HOLD/ENTER key...................................................................................................................... 5
4.3.6.and keys ............................................................................................................................ 5
4.3.7.CAL key ...................................................................................................................................... 6
4.3.8.Disabling Auto Power OFF ......................................................................................................... 6
5.OPERATING INSTRUCTIONS.....................................................................................7
5.1.Temperature measurement............................................................................................... 7
6.MAINTENANCE ...........................................................................................................8
6.1.General.............................................................................................................................. 8
6.2.Battery replacement .......................................................................................................... 8
6.3.Cleaning ............................................................................................................................ 8
6.4.End of life .......................................................................................................................... 8
7.TECHNICAL SPECIFICATIONS ..................................................................................9
7.1.Characteristics................................................................................................................... 9
7.1.1.General data............................................................................................................................... 9
7.2.Environmental conditions .................................................................................................. 9
7.2.1.Climatic conditions...................................................................................................................... 9
7.3.Accessories..................................................................................................................... 10
7.3.1.Accessories provided ............................................................................................................... 10
7.3.2.Optional accessories ................................................................................................................ 10
8.SERVICE....................................................................................................................11
8.1.Warranty conditions......................................................................................................... 11
8.2.Service ............................................................................................................................ 11

HTA103
EN – 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This instrument conforms to safety guidelines relating to electronic measuring instruments.
For your own safety and that of the apparatus, you must follow the procedures described
in this instruction manual and specially read all the notes preceded by the symbol
carefully. Strictly keep to the following instructions before and during measurements:
Do not perform measurements in environments with explosive gas, fuels or dust.
Do not perform any measurement in case of unusual conditions of the instrument such
as deformation, breakage, leakage of substances, absence of display reading etc.
The following symbols are used on the instrument and in this manual:
Caution: refer to the instructions reported on this manual; improper use may
damage the apparatus or its components.
Ground reference
1.1. PRELIMINARY INSTRUCTIONS
Use the instrument only as specified in this manual otherwise, the protection provided
by the instrument may be impaired.
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 measurements beyond the limits specified in this manual.
Check that batteries have been placed correctly.
1.2. DURING USE
Carefully read the following recommendations and instructions:
CAUTION
No compliance with the Warnings and/or Instructions may damage the
apparatus and/or its components or injure the operator.
Use the instrument and the probes only within the ranges specified in this manual and
in the probes’ ones.
Do not perform any measurement on materials under voltage. This could damage the
instrument.
If during a measurement the read value or sign never changes, please verify if the
HOLD function is active.
1.3. AFTER USE
When the measurements are completed switch off the instrument.
Remove batteries when the apparatus remains unused for long periods.

HTA103
EN – 3
2. GENERAL DESCRIPTION
The instrument can performs the following measurements:
Temperature measurement in °C/°F/°K by means of K, J and T type probes
Maximum, minimum values measurements
Data HOLD
Offset adjustment for compensation of external probes
Backlight
Auto Power OFF
Each function could be selected via the relative key. The selected quantity appears on a
high-contrast display with indication of measurement unit and of the active functions.
There are also the function keys, for their use please see § 4.2.
3. PREPARATION FOR USE
3.1. INITIAL
The instrument has been checked from every point of view before shipment. Every care
has been taken to make sure that the instrument reaches you in perfect conditions.
However, it’s advisable to make a rapid check in order to detect eventual damages, which
may have occurred in transit. Should this be the case, enter immediately the usual claims
with the carrier. Make sure that all the accessories listed in § 7.3 are contained in the
package. In case of discrepancies contact the dealer. In case of returning of the tester,
please keep to the instructions given in § 8.
3.2. POWER SUPPLY
The instrument is supplied by 1x9V alkaline battery type IEC 6F22 included in the
package. Battery life: about 200 hours. When battery is low, the symbol " " appears on
the display. Replace it immediately, following the instructions given in § 6.2.
3.3. STORAGE
In order to guarantee the accuracy of the measurements, after a period of storage in
extreme environmental condition, wait for the necessary time so that the instrument
returns to normal measuring conditions (see § 7.2.1).

HTA103
EN – 4
4. NOMENCLATURE
4.1. INSTRUMENT DESCRIPTION
CAPTION:
1. Input terminal for JKT
probes
2. LCD display
3. Arrow key 
4. Arrow key 
5. HOLD/ENTER key
6. MIN key
7. MAX key
8. UNIT/ key
9. CAL key
10.JKT key
11.ON/OFF key
12.Tripod hole
13.Battery cover
Fig. 1: Instrument description
4.2. DESCRIPTION OF DISPLAY
CAPTION:
1. Probe type indication
2. Auto Power OFF
(APO) symbol
3. Low battery indication
4. Main display
5. Measurement unit
6. MAX function active
7. MIN function active
8. HOLD function active
9. Secondary display
Fig. 2: Display description

HTA103
EN – 5
4.3. FUNCTION KEY DESCRIPTION
4.3.1. ON/OFF key
By pushing ON/OFF key permits to turn on and off the instrument. After turn on, the
backlight is active and it automatically disabled after approx. 20s.
4.3.2. UNIT/ key
By pushing UNIT/ key permits the temperature measurement unit selection among the
option: “°C” (Celsius), “°F” (Fahrenheit) and “K” (Kelvin). The UNIT/ key is disabled if the
function “HOLD” is activated..
The formulas that links Celsius and Fahrenheit degrees are:
T [°C] = 1.8 32-F][T or T [°F] = T [°C] * 1.8 + 32
so: 0°C are equal to 32°F, 100°C are equal to 212°F
By pushing long (>2s) of UNIT/ key permits to activate/disable the backlight.
4.3.3. JKT key
By pushing JKT key permits to set the type of external probe (K, J or T) to be connected to
the instrument. Cyclically the K, J or T settings are displayed.
4.3.4. MAX and MIN key
By pushing MAX or MIN key permits to detect the Maximum or Minimum values of
measured temperature. The secondary display (see Fig. 2 – part 9) shows the symbol
linked to the selected function: The symbol “MAX” for maximum value and “MIN” for
minimum value. The MAX or MIN values are dynamically updated while the real time value
of temperature is displayed on the main display (see Fig. 2 – part 4)
4.3.5. HOLD/ENTER key
By pushing HOLD/ENTER key the instrument’s measured value is frozen on the display
and the symbol “HOLD” appears on it. The HOLD function does not influence the
secondary display.
4.3.6. and keys
Use the and arrow keys to set the offset values during the calibration operation of the
probe fitted in the terminal input of the instrument (see § 4.3.7).

HTA103
EN – 6
4.3.7. CAL key
The CAL key permits to perform compensation on the temperature measurement due to a
possible error of the input probe. Follow the below steps:
1. By pushing long (>3s) CAL key to enter in the calibration section. The below screen is
shown at display:
Fig. 3: Compensation of temperature probe
2. On the main display the real time value of the temperature is displayed while the
measurement offset value is displayed on the secondary display. The default value is
“0.0”. Do not modify this default value if any compensation is needed
3. Push the or arrow keys respectively to increase or decrease the offset value. The
maximum set values are: 5°C or 9°F with a 0.1°C /0.1°F resolution
4. By pushing long (>3s) again CAL key to save the settings and quit this mode. The
instrument keeps the set value after each shutdown
4.3.8. Disabling Auto Power OFF
The instrument is provided with Auto Power OFF (APO) feature which automatically
permits to switch it off after 15 minutes of idleness in order to preserve the internal battery.
To disable this feature follows the below steps:
1. With instrument on, push and keep the HOLD/ENTER key
2. By pushing long (>1s) the ON/OFF key. The “APO OFF” message is shown at display
for a while (see Fig. 4 – left part) and the “ “ symbol disappears from display
3. Repeat the same operation of the point 1 and 2 for enable again the function with “APO
ON” message shown at display (see Fig. 4 – right part) or the feature is automatically
restored after each shutdown
Fig. 4: Disable/enable Auto Power OFF

HTA103
EN – 7
5. OPERATING INSTRUCTIONS
5.1. TEMPERATURE MEASUREMENT
CAUTION
Maximum input voltage is 24V AC or 60V DC. Do not attempt to apply any
voltage that exceeds the limits indicates in this manual to avoid electrical
shock hazard or damage the instrument.
1. Turn on the instrument by pushing the ON/OFF key. If no probe is connected to the
instrument, the “- - - -“ symbol is shown at two displays
2. Select the type of probe (see § 4.3.3) and the measurement unit (see § 4.3.2)
3. Insert the connectors of the probe on input terminal respecting the polarity (+) and (-)
(see Fig. 1 – part 1) shown on the instrument and on the probe connector
4. The real time value of the temperature is shown on the main display (see Fig. 5)
Fig. 5: Use of the instrument for temperature measurement
5. Press HOLD/ENTER key to freeze result at display (see § 4.3.5)
6. Press the MAX or MIN keys to read the Maximum or Minimum values on secondary
display
7. Switch off the instrument after measurement

HTA103
EN – 8
6. MAINTENANCE
6.1. GENERAL
1. Whether in use or in storage, please do not exceed the specification requirements to
avoid any possible damage or danger during use
2. Do not place this instrument in high temperature or expose to direct sunlight
3. Be sure to turn the instrument off after use. For long time storage, remove the battery
to avoid leakage of battery liquid that would damage the interior parts
6.2. BATTERY REPLACEMENT
When the symbol " " is displayed replace battery.
CAUTION
Only expert and trained technicians must perform this operation. Remove all
the probes from the devices under test before replacing the battery.
1. Switch off the instrument
2. Remove the temperature probe
3. Remove the battery cover (see Fig. 1 – part 13)
4. Remove the battery from the battery fastener
5. Set the new battery into battery fastener, and return it to the battery case
6. Replace the battery cover
7. Use the appropriate battery disposal methods for Your area
6.3. CLEANING
For cleaning the instrument use a soft dry cloth. Never use a wet cloth, solvents or water,
etc.
6.4. END OF LIFE
CAUTION: this symbol indicates that equipment, its accessories and battery
shall be subject to a separate collection and proper disposal.

HTA103
EN – 9
7. TECHNICAL SPECIFICATIONS
7.1. CHARACTERISTICS
Accuracy is calculated as [%rdg + degrees] at 23°C ± 5°C <70%HR
Temperature measurement with K probe
Range Resolution Accuracy Overload protection
-250°C ÷ 1372°C 0.1 °C (1%rdg+ 1°C) (T<-99.9°C)
(1%rdg+0.5°C) (T≥-99.9°C) 60V DC
24V AC rms
-418°F ÷ 2502°F 0.1 °F (1%rdg+ 1.8°F) (T<-148°F)
(1%rdg+0.9°F) (T≥-148°F)
Temperature measurement with J probe
Range Resolution Accuracy Overload protection
-200°C ÷ 1000°C 0.1 °C (1%rdg+ 1°C) (T<-99.9°C)
(1%rdg+0.5°C) (T≥-99.9°C) 60V DC
24V AC rms
-328°F ÷ 1832°F 0.1 °F (1%rdg+ 1.8°F) (T<-148°F)
(1%rdg+0.9°F) (T≥-148°F)
Temperature measurement with T probe
Range Resolution Accuracy Overload protection
-250°C ÷ 400°C 0.1 °C (1%rdg+ 1°C) (T<-99.9°C)
(1%rdg+0.5°C) (T≥-99.9°C) 60V DC
24V AC rms
-418°F ÷ 752°F 0.1 °F (1%rdg+ 1.8°F) (T<-148°F)
(1%rdg+0.9°F) (T≥-148°F)
7.1.1. General data
Mechanical characteristics
Dimensions (Lx W x H): 190 x 65 x 45mm; (7 x 3 x 2in)
Weight (including battery): 235g (8 ounces)
Mechanical protection: IP40
Supply
Battery type: 1x9V alkaline NEDA 1604 IEC 6F22 JIS 006P
Low battery indication: “ ” symbol is displayed
Battery life: ca 50h (backlight ON), ca 210h (backlight OFF)
Auto Power Off: after 15 minutes of idleness (disabled)
Display
Characteristics: double 4 LCD, sign, decimal point and backlight
Sample rate: 3times/s
7.2. ENVIRONMENTAL CONDITIONS
7.2.1. Climatic conditions
Reference temperature: 25°C ; (77°F)
Operating temperature: 0°C ÷ 50 °C ; (32°F ÷ 122°F)
Operating humidity: <70%RH
Storage temperature: -10°C ÷ 60°C ; (14°F ÷ 140°F)
Storage humidity: <70%RH
Max height of use: 2000m (6562ft)
This instrument satisfies the requirements of EMC Directive 2014/30/EU
This instrument satisfies the requirements of European Directive 2011/65/EU (RoHS)
and 2012/19/EU (WEEE)