HT instruments HT603 - Manual (Page 2)

ENG
HT603
USER MANUAL
1. PRECAUTIONS AND SAFETY MEASUREMENTS
This instrument complies with safety Standard IEC/EN61010-1
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
CAUTION
• Avoid measuring in humid or wet places
• Avoid measuring in rooms where explosive
gas, combustible gas, steam or excessive dust
is present
• Keep you insulated from the object under test
• Do not touch exposed metal parts such as test
lead ends, sockets, fixing objects, circuits etc.
• Avoid doing that if you notice anomalous
conditions such as breakages, deformations,
fractures, leakages of battery fluid, blind display
etc.
• Be careful when measuring voltages exceeding
20V to avoid risks of electrical shock
The following symbols are used in user manual and on the meter:
CAUTION - refer to the instruction manual - an
improper use may damage the instrument or its
components
Double insulated meter
Danger high voltage: risk of electric shock
AC voltage
DC voltage
CAUTION: this symbol indicates that equipment, its
accessories and battery shall be subject to a
separate collection and correct disposal
1.1 Preliminary instructions
CAUTION
• This instrument has been designed for use in
environments with pollution degree 2
• It can be used for VOLTAGE measurements
on installations with overvoltage category CAT
III 300V and CAT II 600V
• Only the leads supplied with the instrument
guarantee compliance with the safety
standards in force. They must be under good
conditions and, if necessary, replaced with
identical ones
• Do not test or connect to any circuit exceeding
the specified overload protection
• Do not effect measurements under
environmental conditions exceeding the limits
indicated in § 8
• Make sure that batteries are properly installed
• Before connecting the test probes to the
installation, make sure that the function
selector is positioned on the required
measurement
• Make sure that LCD and function selector
indicate the same function
• When changing the range, first disconnect the
test leads from the circuit under test in order to
avoid any accident
• When the instrument is connected to
measuring circuits never touch any unused
terminal
• If during measurement the displayed values
remain constant check whether the HOLD
function is active
1.2 Measuring overvoltage category definitions
According to the IEC/EN61010-1 guidelines the circuits are divided
into the following measurement categories:
• CAT IV is for measurements performed at the source of the low-
voltage installation
• CAT III is for measurements performed in the building installation
• CAT II is for measurements performed on circuits directly
connected to the low voltage installation
• CAT I is for measurements performed on circuits not directly
connected to MAINS
2. GENERAL DESCRIPTION
HT603 performs the following measurements:
• DC and AC voltage
• Resistance and continuity test
• Frequency and Duty Cycle
• Capacitance
• Diode test
All selectable by means of a 7-position function selector. Function
keys HOLD, SELECT and RANGE/REL
∆ are also available (see
§ 5.1, § 5.2 and § 5.3). The selected quantity is displayed with
indication of measuring unit and active functions. The instrument
is provided with an Auto Power Off function consisting in an
automatic switching off 30 minutes after last pressure on keys or
rotation of selector. To resume normal operation, switch on the
instrument again
3. PREPARATION FOR USE
3.1 Initial checks
This instrument was checked both mechanically and electrically
prior to shipment. All possible cares and precautions were taken
to let you receive the instrument under perfect conditions.
Notwithstanding we suggest you to check it rapidly (any damage
may have occurred during transport – if so please contact the
local distributor from whom you bought the item). Make sure that
all standard accessories mentioned in § 8 are included. Should
you have to return back the instrument for any reason please
follow the instructions mentioned in § 9
3.2 Supply voltage
The instrument is powered by 2x1.5V button batteries type LR44
included on meter. When batteries are low the symbol "
" is
displayed. To replace/insert batteries follow the instructions
indicated in § 7
3.3 Calibration
The instrument complies with the technical specifications
contained in this manual and such compliance is guaranteed for
12 months
3.4 Storage
After a period of storage under extreme environmental conditions
exceeding the limits mentioned in § 8 let the instrument resume
normal operating conditions before using it
4. INSTRUMENT AND DISPLAY DESCRIPTION
© Copyright HT ITALIA 2011 Release EN 1.01 - 19/12/2011
5. FUNCTION KEYS DESCRIPTION
5.1 HOLD key
By pressing HOLD key the measured value is hold on the display
where the symbol "HOLD" appear. Pressing again HOLD to disable
this function and resume normal operation
5.2 SELECT key
Press SELECT key to select the sub-functions relative to the Hz%,
Ω
and Hz% posiction of rotary switch
5.3 RANGE/REL
∆ key
By pushing RANGE/REL ∆ key the manual mode is activated
(functions , and Ω) and the “AUTO” symbol disappears. Press
RANGE/REL ∆ key (only function ) to enable relative
measurement. The “REL ∆” symbol is shown and the value is zeroed
at display. Press again the key to exit from the function
5.4 Disable Auto Power OFF
For the disable of Auto Power OFF feature:
1. Switch off the instrument
2. Switch on the instrument by press and hold RANGE key
6. HOW TO PERFORM THE MEASUREMENTS
6.1 AC Voltage, Frequency and Duty Cycle measurements
CAUTION
Maximum input for AC voltage measurements is
600V. Do not take any voltage measurement
exceeding this limit in order not to risk electrical shock
or damaging the meter
1. Rotate the selector on Hz% position. The “AC” and “AUTO”
symbols are shown at display. Press SELECT key for AC voltage
measurement selection (symbol “V” at display) and press
RANGE key for the selection of manual range (see § 5.3)
2. Connect the red and black test leads on the circuit under test.
The AC voltage value is displayed
3. If the message "OL." is displayed the maximum voltage value
was exceeded
4. Press SELECT key for the visualization of frequency value. The
symbol “Hz” is shown at display
5. Press SELECT key for the visualization of Duty Cycle value. The
symbol “%” is shown at display
6. For Data HOLD feature see § 5.1
6.2 DC Voltage measurement
CAUTION
Maximum input for DC voltage measurements is
600V. Do not take any voltage measurement
exceeding this limit in order not to risk electrical shock
or damaging the meter
1. Rotate the selector on or m position. The “DC” and “AUTO”
(only ) symbols are shown at display. Press RANGE key for the
selection of manual range (only ) (see § 5.3)
2. Connect the red test lead (positive pole) and black test lead
(negative pole) on the circuit under test. The DC voltage value is
displayed
3. The symbol "-" on the instrument display indicates that the
voltage has opposite direction compared to the previous
connection
4. If the message "OL." is displayed the maximum voltage value
was exceeded
5. For Data HOLD feature see § 5.1
6.3 Resistance, Continuity test and Diode test measurements
CAUTION
Before taking resistance measurements on circuit
remove power from the circuit under test and
discharge all capacitors
1. Rotate the selector onto
Ω position. The “M Ω” and “AUTO”
symbols are displayed. Press RANGE key for the selection of
manual range (see § 5.3)
2. Connect the test leads to the circuit under test. The resistance
value is displayed
3. Press SELECT key for Continuity Test selection (symbol “ ” at
display). The buzzer sounds when resistance values are lower
than 50
Ω
4. Press SELECT key for DiodeTest selection (symbol “ ” at
display). Connect the red lead to the positive side (anode) of the
diode and the black lead to the negative side (cathode). The
meter displays the diode voltage typically within 0.4 ~ 0.9V.
Reverse the connections and measure the voltage across the
diode again. The message “OL." on the display corresponds to a
correct junction
6.4 Frequency and Duty Cycle measurements
CAUTION
Do not perform measurements on circuits with a
voltage exceeding 600V AC/DC to avoid possible
shock hazard
1. Rotate the selector onto Hz% position. Press SELECT key for
Frequency or Duty Cycle measurement selection. The “Hz” or “%”
symbols are shown at display. Connect the test leads to the circuit
under test. The frequency value (in kHz or MHz) or the percentage
value are shown at display
6.5 Capacitance measurement
CAUTION
Before taking any in circuit or capacitance
measurement, remove power from the circuit being
tested and discharge all capacitors
1. Rotate the selector onto ” ” position. Press RANGE/ REL ∆ key
for “nF” capacitance measurement. The value is zeroed at display
2. Connect the test leads to the capacitor terminals taking care of the
positive polarity (red test lead) and negative polarity (black test
lead). The capacitance value will be displayed
3. If the message "OL." is displayed the maximum capacitance value
was exceeded
7. BATTERY REPLACEMENT
When the " " low battery indication is displayed the batteries must
be replaced as follows:
1. Switch OFF the meter
2. Remove the fixing screw and the battery compartment cover
3. Remove batteries and replace with new ones of the same type
4. Replace
battery compartment cover
8. TECHNICAL SPECIFICATIONS
The accuracy is referred to 23°C± 5°C, <80%RH
AC Voltage
Input impedance: 10M Ω, <100pF; Overload protection: 600V rms
DC Voltage
Input impedance: 10M Ω, <100pF; Overload protection: 600V rms
Resistance and Continuity test
Frequency
Sensitivity: 1.0Vp-p (square wave) ; Vmax: 5.0Vp-p, 240V (50/60Hz)
Duty Cycle
Sensitivity: 1.0Vp-p 30% ≤Duty≤70% (square wave) ; Vmax: 5.0Vp-p
Capacitance
Meas. Range Resolution Frequency Accuracy
400.0mV 0.1mV
50 ÷ 500Hz
±(1.5%rdg+5dgt)
4.000V 0.001V
±(0.9%rdg+5dgt) 40.00V 0.01V
400.0V 0.1V
600V 1V
Meas. Range Resolution Accuracy
400.0mV 0.1mV ±(0.7%rdg+5dgt)
4.000V 0.001V
±(0.6%rdg+2dgt) 40.00V 0.01V
400.0V 0.1V
600V 1V ±(0.7%rdg+5dgt)
Meas. Range Resolution Buzzer Accuracy
400.0 Ω 0.1Ω
<50 Ω
(range
400
Ω)
±(0.9%rdg+5dgt)
4.000k Ω 0.001kΩ
±(0.9%rdg+2dgt) 40.00k Ω 0.01kΩ
400.0k Ω 0.1kΩ
4.000M Ω 0.001MΩ
±(1.5%rdg+5dgt)
40.00M Ω 0.01MΩ
Meas. Range Resolution Accuracy
0.001Hz ÷5MHz 0.001Hz ÷ 0.001MHz ±(0.3%rdg+5dgt)
Meas. Range Resolution Accuracy
0.1% ÷ 99.9% 0.1% ±(0.5%rdg+3dgt)
Meas. Range Resolution Accuracy
50.00nF 0.01nF ±(5.0%rdg+0.2nF)
500.0nF 0.1nF
±(2.9%rdg+5dgt) 5.000µF 0.001µF
50.00µF 0.01µF
100.0µF 0.1µF
Safety: IEC/EN61010-1
Measurement category: CAT III 300V , CAT II 600V, Pollution degree: 2
Insulation: double insulation
Compliance with 2004/108/CE (EMC) and 2006/95/CE (LVD) Directives
Display: LCD, 4dgt, 5000 points
Sampling rate: 3 times/s
Diode test: test current 1.1mA, open voltage: 1.5VDC (max)
Over range indication: “OL.” or “-OL.” symbols at display
Power supply: 2x1.5V button batteries type LR44
Auto Power OFF: after 30 minutes of idleness
Reference temperature/humidity: 23°C± 5°C (73°F ± 41°F) ; <80%RH
Working temp.: 0
÷30°C <80%RH ; 30 ÷40°C <75%RH ; 40 ÷50°C <45%RH
Storage temperature/humidity: -20 ÷ 60°C (-4°F ÷ 140°F) ; <80%RH
Max height of use: 2000m (6562ft)
Dimensions (LxWxH): 112x56x12mm (4x2x0.5in)
Weight (with batteries): 115g (0.2lv)
Included accessories: test leads, batteries (fitted), user manual
9. SERVICE
9.1 Warranty conditions
This instrument is guaranteed for one year against material or
production defects, in accordance with our general sales conditions.
During the warranty period the manufacturer reserves the right to
decide either to repair or replace the product. Should you need for
any reason to return back the instrument for repair or replacement
take prior agreements with the local distributor from whom you
bought it. Do not forget to enclose a report describing the reasons for
returning (detected fault). Use only original packaging. Any damage
occurred in transit due to not original packaging will be charged
anyhow to the customer
9.2 Service
Should the instrument not work properly, make sure that batteries are
correctly installed and working before contacting your distributor, also
check the test leads and replace them if necessary. Should you need
for any reason to return back the instrument for repair or replacement
take prior agreements with the local distributor from whom you
bought it. Do not forget to enclose a report describing the reasons for
returning (detected fault). Use only original packaging. Any damage
occurred in transit due to not original packaging will be charged
anyhow to the customer. The manufacturer will not be responsible for
any damage to persons or things
HT ITALIA SRL
Via della Boaria, 40
48018 – Faenza (RA) – ITALY
Tel: +39-0546-621002
Fax: +39-0546-621144
Web:
www.ht-instruments.com
Email: [email protected]