8
Table 5-2
Kind of oil
Water
temperature
(
℃
)
Oil
temperature
(
℃
)
Spec.
Gravity
Viscosity
(CP)
Detected
oil layer
(mm)
Kerosene
Turbine oil
A-Heavy oil
B-Heavy oil
C-Heavy oil
13.5
13.5
13.5
13.5
25
14.0
13.5
13.5
13.5
25
0.796
0.877
0.846
0.91
0.925
1.6
330
4.9
―
300
3.4
3.1
3.0
3.6
3.5
(c) Change of detectable oil layer thickness
Detectable oil layer thickness can be changed by changing electrode length (max. limit 50
mm). When ordering for us, please designate the oil layer thickness you wish the device
made detection of leaking oil at.
(3) Materials of Apolarm-C
(a) Floater
Floater uses impact-resistant PVC as material.
This resin is self-fire extinguishing type that has excellent chemicals resistant and
whether proofs properties.
Use of BTX group solvents will cause no specific troubles as far as it is used only a short
time (3
～
5 hrs.).
Even if the solvent contacts the floater when any accident takes place, it will not affect
the functional performance of the floater. For improving weatherproofing property, the
floater has a shade attached on.
(b) Cable
Cabtyre cable, which uses synthetic rubber as sheath material and polyethylene as
insulation respectively, is used.
5-2. Transducer
Apolarm-C is composed of detector and transducer, and is made in an intrinsic safety
explosion-proof structure.
(1) Kinds of transducer
Table 5-3
Models Specifications
Circuit
Fig.
External
shape Fig
AS-40E
Examination
Passage No.
C14649
Intrinsic safety explosion- proof structure,
Ex [ia]
Ⅱ
C Equipped with delay circuit,
wire disconnection alarm and short-circuit
alarm.
For installation in non- hazardous place
and inside of buildings.
Fig. 5-1
Fig. 5-2
