LPS-2 USER MANUAL
4
Fig. 4. Method of connecting alarm loop wires with a length of up to 1000 m
3.
Description of the operating environment of the LPS-2
instrument
The instrument is designed for indoor operation. The instrument operates correctly within an
ambient temperature range of +5
°
C to +50
°
C, and relative humidity should not exceed 80%.
During storage of the instrument, the ambient temperature should be within the range of -40
°
C
to +70
°
C
.
If the instrument was stored or transported at a temperature of less than +5
°
C, it should not be
connected to power supply for at least 3 hours. After this time, the instrument should reach the
operating temperature.
The instrument cannot be used in dusty areas and in atmospheres containing explosive or
corrosive gases.
The accuracy of measurements of parameters and quantities indicated in the technical
specifications is reached after 30 minutes of instrument operation in suitable environmental
conditions.
4.
Maintenance of the LPS-2 instrument
A clean, dry cloth should be used to remove dust from the housing of the instrument. Other
dirt should be removed with a cloth dampened with a 1% detergent solution. Greasy
impurities can be removed with special products used to clean computer hardware.
Transparent parts of the housing should be washed with soft cloths or with dedicated cloths
for washing computer screens. Using spirit, petroleum naphtha or other solvents is not
allowed. Such cleaning agents may cause surface damage to the housing of the instrument.
After cleaning, the instrument should be wiped dry with a soft cloth.
Care should be taken during cleaning to prevent large amounts of the cleaning liquids from
getting inside the instrument.
Power supply
24 V
≈
ALARM
NC contact
blue and black
blue and black
green
green
red
red
jumpers
