Manufacturer of Level Switch, Level Transmitter,
Detector and Sensor DITECH,LTD.
DITECH,LTD.
Name
Capacitive moisture-in-oil meter
Model
QBS-MO
NSB-MO
Explosion
proof
construction
proof
construction
Non-explosion-proof
Intrinsically safe construction(i3nG5)
Object to be
measured
measured
Percentage of moisture content in oil |
 |
Description
If water gets into oil, the relative permittivity of the oil increases. If no chemical reaction results from the mixing, the relative permittivity of the mixture follows the logarithmic law. The capacitive moisture-in-oil meter is designed for manufacturing processes to detect moisture content by identifying the relative permittivity of the mixture.
Operating
principles
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 This signal is converted to an on- off signal by a switching circuit and is withdrawn as a contact output.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% (water) |
| Output signal | DC4～20mA DC1～5V ※ One of the above signal |
| Input power | Model QBS-MO (Model PS-0MO)： AC105V/210V 50/60Hz or DC24V Model NSB-MO (Model PS-2)： AC105V/210V 50/60Hz |
| Power consumption | 10W |
| Allowable temperature | Detector： 0℃～+80℃ (Depends on the specifications) Transducer： Model PS-0MO： －10℃～＋50℃ Transducer： Model TR-2MO： －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-0MO： 5.5kg Transducer： Model TR-2MO： 4.3kg Power source： Model PS-2： 7.6kg |
| Size | Transducer： Model PS-0MO： 216(W)×125(D)×259(H) Transducer： Model TR-2MO： 200(W)×149(D)×220(H) Power source： Model PS-2： 250(W)×145(D)×275(H) (mm) |
| Installation | Detector： Flange mounting Screws mounting, etc. |
| Material | Detector： SUS316 SUS316L PTFE Ceramic, etc. Head case： Light alloy SUS304 Salt resistant paint case, etc. |
Configuration
Model QBS-MO
(Non-explosion-proof type)
＜Separated transducer type＞
This model is composed of detector unit, transducer and special cable.
Configuration
Model NSB-MO
(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-MO.
