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

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 This signal is converted to an on- off signal by a switching circuit and is withdrawn as a contact output.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.

Detector

Transducer

PS-0OW

Special cable

DSC

Options (QBS-OW)

Integrated type indicator for detector

Integrated type indicator for transducer

Separated type indicator

Lightning arrestor

Monitoring device

Common options available for models

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.