Name

Capacitive oil-in-water meter

Model

QBS-OW

NSB-OW

Explosion
proof
construction

Non-explosion-proof

Intrinsically safe construction(i3nG5)

Object to be
measured

Oil contained in the water

Oil in water Oil in water
Description

This Capacitive oil-in-water meter is designed to detect the oil contained in the water in pipelines and tanks for suction and discharge water.
For measuring the oil contents (in pipelines, in tanks, and etc.), this detector is used in combination with the electrode expressly designed for each use. Accurately detected oil content can be used as an indicator to improve the efficiency of a manufacturing process or treatment process.

Operating
principles

By utilizing the fact that there is a large difference in dielectric constant between water and oil, this detector converts the correction with dielectric constant and conductivity owing to the mixing ratios of oil and water proportionally to an electric signal. This signal is converted to an on- off signal by a switching circuit and is withdrawn as a contact output.

Specifications
Measurement range 0~30% (oil)
Output signal DC4~20mA DC1~5V ※ One of the above signal
Input power Model QBS-WO (Model PS-0WO): AC105V/210V 50/60Hz or DC24V
Model NSB-WO (Model PS-2):     AC105V/210V 50/60Hz
Power consumption 10W
Allowable temperature Detector: 0℃~80℃ (Depends on the specifications)
Transducer:  Model PS-0WO: -10℃~+50℃
Transducer:  Model TR-2WO: -25℃~+70℃
Power source: Model PS-2:     -10℃~+50℃
Special cable:  Model DSC-15 (high accuracy use):   -10℃~+60℃
Special cable:  Model DSC-05 (small size):      -10℃~+60℃
Special cable:  Model DSC-13 (heat resistance use): -50℃~+200℃
Allowable pressure Detector: 1MPa (approx. 10.2kg/cm2G) (Depends on the specifications)
Weight Transducer:  Model PS-0OW: 5.5kg
Transducer:  Model TR-2OW: 4.3kg
Power source: Model PS-2:     7.6kg
Size Transducer:  Model PS-0OW: 216(W)×125(D)×259(H)
Transducer:  Model TR-2OW: 200(W)×149(D)×220(H)
Power source: Model PS-2:     250(W)×145(D)×275(H) (mm)
Installation Detector: Flange mounting, etc.
Material Detector: SUS316 SUS316L PTFE Ceramic, etc.
Head case: Light alloy SUS304 Salt resistant paint case, etc.
Configuration

Model QBS-OW
(Non-explosion-proof type)
<Separated transducer type>

This model is composed of detector unit, transducer and special cable.

Configuration

Model NSB-OW
(Intrinsically safe construction / i3nG5)
<Totally separated detector unit type>

This model is composed of detector unit, transducer, relay power source and special cable that is 4 core control cable. As the transducer is designed to be installed in a dangerous area, the special cable can be made short enough to minimize picked-up noises, thus permitting a stable performance to be obtainable. As to performance, this model has the same characteristics as those of Model QBS-OW.

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