Simex DRS-30 Series, Руководство пользователя

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User manual - LIQUID SENSOR DRS-30x
2. GENERAL CHARACTERISTICS
Liquid sensor type
DRS-30x
is designed for conducted liquid presence detection.
Parameters of the detector have been fixed to allow detection of actual presence of liquid on
its electrodes and to be resistant for low impedance conducted surfaces (e. g. wet fingers).
Additional reference electrode prevents detector against false signalising when liquid covers
its surface only. PUSH-PULL output gives an opportunity for connection either to devices
equipped with direct or inverse logic inputs. Wide range of supply voltage (12 - 30V DC) and
operation temperatures (-40°C ÷ +85°C) allow to use the sensor in most systems (e. g. pump
dry run detection, full tank detection etc.)
Approximate resistivity of water
Kind of water
from water
supply system
potable water mineral water distilled water
resistivity
0.5 ÷ 5kΩ/cm 1 ÷ 8kΩ/cm 2 ÷ 5kΩ/cm 50 ÷ 200kΩ/cm
3. TECHNICAL DATA
Power supply voltage
12V...
24
...30V DC
Current consumption about 5mA (+ output load )
Output PUSH-PULL
Output max. load 50mA (sink and source)
Output delay < 100ms
Detection threshold 12kΩ ± 20%
Protection level IP 67
Material of electrodes Stainless still, acid resistant
Filling material polyurethane
Mounting method thread
Connection cable 4 x 0.5, polyurethane
Cable length 1...3 m (depending on device version)
Housing type
Housing dimensions
gland M20x1,5 LAPKABEL
28 x 33 mm, thread M20x1,5x9
Weight 50 g
Operating temperature
Storage temperature
-40°C do +85°C
-40°C do +85°C
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