Overview
The OPTISWITCH 6500 is a capacitance level switch for level detection in hygienic applications or any environment requiring minimally invasive sensors. It detects low or high level and is often used as dry-run or overfill protection. The device is able to detect foam or even a change in media characteristics of the same liquid (e.g. degree of pollution of water). The microwave level switch is resistant to CIP and SIP agents.
Product features and options depend on device configuration: Contact us to make sure that your preferred functionality can be combined in one device.
- Unaffected by foam, condensate or build-up
- Can be set to detect foam or even a change in media characteristics of the same liquid
- For media with dielectric constant >1.5
- Very fast response times
- Maintenance-free ‐ can be installed in any position
- Wide variety of hygienic process connections available
- Also available with a sliding connection for tanks with thick wall thickness / insulation or to overcome high process temperature
- EHEDG and 3A certified; complies with FDA and EC1935/2004
Specifications
Depending on selected device configuration
General information
| Product type | Level switch |
| Product family name | OPTISWITCH |
| Product positioning | For advanced hygienic applications |
| Product variants | OPTISWITCH 6500 C: Compact housing |
| Measurement variables | Level |
| Measurement principle | Capacitance |
| Level measurement type | Point level detection |
| Contact to measured medium | Yes |
| Interface measurement | Yes |
| Redundancy | No |
| Measured media | Liquids, Liquid/liquid interface, Foam, Slurries, Pastes, Solids, Bulk solids, Granulates, Powders |
| Probe length units to display | mm/in |
| Probe length |
18…250 mm/ 0.7…9.8 in |
Operating conditions
| Process pressure |
-1…16 barg/ -14.5…232 psig |
| Process temperature |
-40…+200°C/ -40…+390°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: G½ G½ for hygienic adapters
|
| Hygienic adapters |
Collar ferrule (DIN 11851): DN25, DN40, DN50 Tri-Clamp®: 1½'', 2'' Varivent®: N Collar ferrule (SMS 1147): 51 mm Weld-in sleeve: 30 mm / 1.2'' Weld-in sleeve with shoulder: 29 mm / 1.1'' Collared weld-in sleeve: 45 mm / 1.8'' Spherical weld-in sleeve: 35 mm / 1.2 |
Approvals/Standards
| Certificates/Approvals Ex | ATEX |
| Certificates/Approvals Hygienic | FDA, 3A, EHEDG, EC 1935/2004, EC2023/2006 |
| Ingress protection | IP67, NEMA4/4X |
Communication
| Discrete outputs | NPN/PNP, Transistor |
US 4200 
CN 3532 
BR 1766 
SG 1041 
MY 899 
HK 586 
AU 578 
TH 532 
