krohne OPTISWITCH 5250 Vibration level switch
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NG # 006640-HW-KROHNE-040
 
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The OPTISWITCH 5250 is a vibration level switch with a polished probe extension and tuning fork for liquid hygienic applications. It is a universal and reliable device for level detection in vessels. It detects low or high level and is mostly used for overfill, dry-run or pump protection. Installations in pipelines are also possible.
Specification
General information
| Product type | Level switch | 
| Product family name | OPTISWITCH | 
| Product positioning | With rigid extension for hygienic applications | 
| Product variants | OPTISWITCH 5250 C: Compact housing | 
| Measurement variables | Level | 
| Measurement principle | Vibrating | 
| Level measurement type | Point level detection | 
| Contact to measured medium | Yes | 
| Interface measurement | No | 
| Redundancy | No | 
| Measured media | Liquids | 
| Probe length | 80…6000 mm/ 3…236 in  | 
| Measuring point | Pressurised tank, Open tank, Open channel, Basin | 
Operating conditions
| Process pressure | -1…64 barg/ -14.5…925 psig  | 
| Process temperature | -50…+250°C/ -58…+482°F  | 
Materials
| Gaskets | Ethylene propylene diene monomer (EPDM), Fluoroelastomer rubber (FKM/FPM), Kalrez® 6375, PFA | 
| Wetted parts | Austenitic stainless steel (1.4404/316L) | 
Process connections
| Thread connections | Male: G¾, G1 ¾ NPT, 1 NPT  | 
| Hygienic connections | Collar ferrule with nut (DIN 11851): DN25, DN40 Tri-Clamp®: 1", 1 ½" Collar ferrule with nut (SMS 1147): 38 mm  | 
Approvals/Standards
| Certificates/Approvals Others | WHG | 
| Certificates/Approvals Ex | ATEX, IECEx, FM, CSA | 
| Certificates/Approvals Hygienic | FDA, 3A, EC 1935/2004 | 
| Certificates/Approvals Marine | GL, LR | 
| Certificates/Approvals Safety | SIL 2 | 
| Ingress protection | IP66/67, NEMA4/4X/6 | 
Communication
| Discrete outputs | 2-wire (8/16 mA), Contactless, NAMUR, Relay, Transistor | 
Description
Vibration level switch with rigid extension for hygienic applications
Point level detection of liquids in the food, beverage and pharmaceutical industry
Probe length: up to 6000 mm / 236"
Density: ≥0.5 g/cm3 / 0.018 lb/in3
-50…+250°C / -58…+482°F; -1…64 barg / -14.5…928 psig