For Liquids
The flow switches model DSS operate on the suspended float principle, however not with a tapering measuring tube, but with a cylindrical float and a slotted conical nozzle. This technology allows a very much more compact construction and offers considerable price advantages.
Switching range: 0.05 - 1.0 ... 10 - 110 l/min water
Connection: G ¼ ... G 1¼, ¼ ... 1¼" NPT female thread
Material: brass, stainless steel
pmax: 250 bar (brass), 350 bar (stainless steel)
tmax: 100°C
Accuracy: ±5 % of full scale
Application in hazardous areas
Mechanics: The apparatus can be used as follows in explosive atmospheres in accordance with the applicable erection regulations on machines, devices and plants, such as e.g. EN 1127-1, EN 60079-14 etc.:
- In Zone 1 (gas hazard, category 2G) in the explosion groups IIA, IIB and IIC
- In Zone 2 (gas hazard, category 3G) in the explosion groups IIA, IIB and IIC
- In Zone 21 (dust hazard, category 2D) in the explosion groups IIIA and IIIB
- In Zone 22 (dust hazard, category 3D) in the explosion groups IIIA and IIIB
Specifications
Technical Details
- Housing:
DSS-11...: brass, Ms 58
DSS-12...: stainless steel, 1.4301 - Connections:
DSS-11...: brass, Ms 58
DSS-12...: stainless steel, 1.4301 - Float:
DSS-11...: brass, Ms 58
DSS-1101: PP
DSS-12...: stainless steel, 1.4301
DSS-1201: PVDF - Nozzle:
DSS-11...: brass, Ms 58
DSS-12...: stainless steel, 1.3955 - Seals:
DSS-11...: NBR
DSS-12...: FPM - Max. temperature: 100°C
DSS-1101... / DSS-1201..: 70°C - Max. pressure:
DSS-1101... / DSS-1201..: 16 bar
DSS-11...: 250 bar
DSS-12...: 350 bar - Installation position: vertical, upward flow
- Accuracy: ±5% of full scale
- Repeatability: ≤1%
- Contact: bistable reed contact
- Electr. connection:
2 m cable (DSS-...F0...)
for all other models : connector DIN EN 175301-803 - Electrical switching values:
N/O contact
max. 250VAC/DC /1.5A/100W/100VA
changeover contact
max. 250VAC/DC /1A/30W/60VA
N/O contact and
changeover contact (cCSAus)
max. 230VDC /0.26A/60W,
60VDC /1A/60W,
max. 240VAC /0.42A/100W,
100VAC /1A/100W - Protection: IP65
Electrical contacts
- ATEX contact ...F0:
II 2 G Ex mb IIC T6 Gb
II 2 D Ex mb IIC T80°C Db
max. 250 VAC/1,5 A/100 VA
IECEx BVS 07.0007X - ATEX N/O contact type 41R57 ...G0 and GG:
II 3 G Ex ic IIC T4 Gc
II 3 D Ex ic IIIC T125°C Dc
-20°C ≤Ta ≤80°C
max. 250 VAC/DC/1,5 A/100 W/100 VA - ATEX changeover contact type 41R57U ...H0 and HH:
II 3 G Ex ic IIC T4 Gc
II 3 D Ex ic IIIC T125°C Dc
-20°C ≤Ta ≤80°C
max. 250 VAC/DC/1 A/30 W/60 VA
Hysteresis: approx. 3.5 mm float movement
Protection: IP 65 electr. contacts
Download Datasheet: Kobold All Metal Flow Switches DSS
Reference : kobold.com
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