LIST OF CHEMICALS
The following list of chemicals, although not all-inclusive, are known to attack PES, the material from which a
portion of the sonic liquid level sensor is made.
Prolonged submergence of the sensor should be avoided.
After submergence in any of these chemicals, a through cleaning of the sensor head should be conducted to prolong
sensor life.
* ACETALDEHYDE - CH
3
CHO * ETHYL ACETATE - CH
3
COOC
2
H
5
* ACETONE - CH
3
CHOH
3
* ETHYLENE GLYCOL - HOC
3
H
4
OH
* ANILINE - C
6
H
5
NH
2
* METHYL ETHYL KETONE - C
2
H
5
COCH
3
BENZALDEHYDE - C
6
H
5
CL * METHYLENE CHLORIDE - CH
2
CL
2
CHLOROBENZENE - C
6
H
5
CL NITRO BENZENE - C
6
H
5
NO
2
CRESOL - CH
3
C
6
H
4
OH * PHENOL - C
6
H
5
OH
* CYCLOHEXANONE - C
6
H
10
O * PYRDINE - C
5
H
5
N
DICHLOROBENZENE - C
6
H
4
CL
2
TOLUENE - C
6
H
5
CH
2
1,2 DICHLORETHANE - CH
2
CLCH
2
CL TRICLOROETHYLENE - CLCH:CCL
2
*These chemicals are known to be water soluble, ranging from very to slightly soluble. While this information is, it
will also make interface readings less accurate. In such case, good interface readings will depend upon the relative
specific gravity’s involved. In the extreme case of dissolved water within a cargo, and upon ullage gauging of these
chemicals, a beeping tone will be heard instead of the normal steady horn tone. This sensor response should not be
interpreted as a malfunctioning unit.
Page 44
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