13
(4) Operation
Table 6-1
Normal Oil
detect
System trouble
(APOLARM Cable
short or open)
APOLARM-C
Model
CSR-3005E
Pilot Lamp
(Green)
ON OFF
OFF
Pilot Lamp
(Green)
ON OFF
ON
Lamp
Transducer
Model AS-40E
Pilot Lamp
(Red)
OFF OFF
ON
Oil ALARM
Contact A1-C1
OPEN CLOSE
OPEN
Oil ALARM
Contact B1-C1
CLOSE OPEN
CLOSE
System ALARM
Contact A2-C2
CLOSE CLOSE
OPEN
Contact
Transducer
Model AS-40E
System ALARM
Contact B2-C2
OPEN OPEN
CLOSE
6-3. Oil leakage detection test
Detecting sensitivity of Apolarm-C is tested along the following steps.
(1) Prepare a test-use water tank and put water in it.
Put Apolarm-C on the water surface.
In case of metallic water tank, it should be larger 400 mm
φ
and in case of plastic water
tank, it should be larger than 350 mm
φ
. Earth the water in tank.
(2) Make correct wiring for Apolarm-C and its transducer. (See Fig.6-1)
(3) Hold the cable of Apolarm-C at right above the detector. (Standard length of cable for this
holding is 1 m.)
(4) Put ON the power source of transducer.
(Pilot lamp green lights)
(5) Gently send oil falling on the water little by little from a comer the tank.
When the pilot lamp of transducer goes out, stop the oil sending.
Confirm the amount of oil fed in the tank.
(6) The oil layer thickness detectable is sought by the following formula.
H: Oil layer thickness (cm)
V: Amount of oil fed in tank (cm)
A: Surface area of water in tank (cm)
a: Cross section area of Apolarm-C on its draft line level
V
H =
A - a
