YATO YT-73087, Руководство по эксплуатации

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O P E R A T I N G M A N U A L
GB
Parameter Temperature Pulse-duty factor Relative humidity(%RH)
Catalogue number Range Resolution Precision Range Resolution Precision Range Resolution
YT-73087
-20 O C ÷ +400 O C 0,1 O C ±(1,5% + 3)
1% ÷ 99% 0,1%
1 Hz ÷ 10 kHz: ±(2,0% + 5);
>10 kHz; undetermined
30% ÷ 90% 0,1 %
-20
O
C ÷ +1000
O
C 1
O
C ±(2,0% + 3)
Remarks Fuse 500mA/300V Input voltage range: 3 Vp-p ÷ 10 Vp-p
Working temperature 0
O
C ÷ 40
O
C; response time:
45% RH -> 90% RH ≤ 10 minutes
90% RH -> 45% RH ≤ 15 minutes
Parameter Noise level Light intensity
Catalogue number Range Resolution Range Resolution
YT-73087 35 dB ÷ 100 dB 0,1 dB
400 x 10 lx 1 lx
4000 x 10 lx 10lx
Remarks Frequency of the measured signal: 100 Hz ÷ 10 kHz
Precision: ± (% of the indi weight of the least significant digit)
OPERATION OF THE MULTIMETER
ATTENTION! In order to protect from electric shock before the housing of the device is opened, disconnect the measurement cables
and turn the meter off.
Safety instructions
Do not operate the meter in the presence of an excessive humidity, toxic or inflammable vapours and in explosive atmosphere. Before
each use check the conditions of the meter and the measurement cables. If any damage is detected, it is prohibited to operate the
device. Damaged cables must be replaced. In case of any doubts, consult the manufacturer. During measurements keep the measure-
ment cables and leads by the insulated parts. Do not touch the places of measurement or the sockets of the meter which are not being
used. Before the measured quantity is modified, disconnect the measurement cables. Do not realize any maintenance tasks without
making sure the measurement cables have been disconnected from the meter, and the meter itself has been turned off.
Replacement of the battery
The multimeter is powered with a 9V 6F22 battery . It is recommended to use alkaline batteries. In order to install a battery, open the
housing of the device removing the screws at the bottom of the meter. Connect the battery in accordance with the marking of the termi-
nals, close the housing and replace the screws. If the battery symbol is displayed, the battery must be replaced. For the sake of preci-
sion of measurements, it is recommended to replace the battery as soon as possible once the symbol of battery has been displayed.
Replacement of the fuse
The device is equipped with a fast F500mA/300V (Ø5x20mm) fuse. If the fuse is damaged, it must be replaced with a new one of the
same electrical parameters. To do so, open the housing of the meter. First remove the battery and the rubber protection from the meter,
and remove the screws at the bottom of the meter. Open the housing and observing the safety principles replace the fuse.
Switch button
The function of the button is to turn the meter on and off. If no measurement is realised, the selector remains in the same position, and
no other button is pushed, the meter will turn out automatically after approximately 15 minutes.
Button „HOLD”
The button „HOLD” permits to hold the measured value in the display. If the button is pushed the displayed value will remain in the
display even when the measurement is finished. In order to return to the measurement mode push the button again. The function is
signalled with an „H” in the display.
Button „Hz%”
The selector is switched to „Hz%”. The purpose of the button is to select the frequency of the measurement „Hz” or the cycle of opera-
tion „%”. The selected mode is signalled in the display with the corresponding symbol.
Button „REL”
The purpose of the button is to measure the relative value. The function is available for every position of the selector apart from the
measurements of frequency and cycle of operation. If the „REL” button is pushed during the measurement, the display is reset and
the previously displayed value is adopted as a reference level. A new measurement will indicate the difference between the measured
value and the reference value. If the button is pushed again, the device will return to the normal mode of measurement. The function
is signalled with the „REL” symbol in the display.
Button „*”
The purpose of the button is to illuminate the display of the meter. In order to activate the function push and hold the button for ap-