DITECH,LTD.
Model QBS-BL
Model NSB-BL
Name
Blower-equipped
Level transmitter
Model
QBS-BL
NSB-BL
Explosion
proof
construction
proof
construction
Non-explosion-proof
Intrinsically safe construction(i3nG5)
Feature
This capacitance type blower-equipped level transmitter is designed to detect the level of powder with keeping the powder from solidifying.
Description
If the substance to be measured is a powder (or in the form of flakes) and tends to form lumps, it might build up and solidify on the probe due to consolidation loads.
This capacitance type blower-equipped level transmitter blows out a small amount of air (nitrogen) through a port at the tip or side of the probe to keep the powder from solidifying while detecting the level of the powder. Blower-equipped level switch is also available.
Specifications
| Measurement system | Capacitance system |
| Measurement range | Min. range 0～50mm , Max. range 0～2m (Any other range are possible) |
| Output signal | DC4～20mA DC1～5V ※ One of the above signal |
| Input power | Model QBS-BL (Model PS-0BL)： AC105V/210V 50/60Hz or DC24V Model NSB-BL (Model PS-2)： AC105V/210V 50/60Hz |
| Power consumption | 10W |
| Linearity | ±0.5% FS |
| Allowable electrode conductance (G) |
3μS |
| Allowable electrode distribution capacity (Co) |
0～180pF or 0～500pF |
| Allowable temperature | Detector： －200℃～＋1100℃ (Depends on the specifications) Transducer： Model PS-0BL： －10℃～＋50℃ Transducer： Model TR-2BL： －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 load | Detector： 2000㎏ Concentrated at detection tip (Depends on the specifications) |
| Allowable pressure | Detector： 100MPa (approx. 1020kg/cm2G) (Depends on the specifications) |
| Weight | Transducer： Model PS-0BL： 5.5kg Transducer： Model TR-2BL： 4.3kg Power source： Model PS-2： 7.6kg |
| Size | Transducer： Model PS-0BL： 216(W)×125(D)×259(H) Transducer： Model TR-2BL： 200(W)×149(D)×220(H) Power source： Model PS-2： 250(W)×145(D)×275(H) (mm) |
| Installation | Detector： Flange mounting Screws mounting Ferrule IDF, etc. |
| Material | Detector： SUS304 SUS316 SUS316L Hastelloy Titanium Tantalum Nickel PTFE Ceramic, etc. Lining： PTFE Glass Rubber, etc. Head case： Light alloy SUS304 Salt resistant paint case, etc. |
Configuration
Model QBS-BL
(Non-explosion-proof type)
＜Separated transducer type＞
This model is composed of blower-equipped detector unit, transducer and special cable.
Configuration
Model NSB-BL
(Intrinsically safe construction / i3nG5)
＜Totally separated detector unit type＞
This model is composed of blower-equipped 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-BL.
