OPTISWITCH 6700 C Technical Datasheet
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Technical Datasheet Level switch for hygienic and industrial applications • Two adjustable contact outputs • Problem solver for adhesions • IO link interface

1.1 Level switch for hygienic and industrial applications The OPTISWITCH 6700 C is a level switch for level detection and dry-run protection for liquids and solids. Through its small and optimal sensor shape, the device is easy to clean and the risk of clogging of sticky products is minimised. The device measures liquids such as water and beer and even viscous and sticky products such as honey or toothpaste. Solids (sugar or flour) can be also measured. The measurement is precise and not affected by the mounting position. Coating of the sensor or condensate are not detected. The OPTISWITCH...

Process temperature -40…+115°C / -40...+239°F Possibility for analogue output Adaptive trigger Insensitive to build up or foam Measures alternating media LED's for indication of the two switch points Switch entirely made of stainless steel Excellent for media separation No blockage of the pipeline Industries • Food & Beverage • Pharmaceuticals • Cosmetics Typical applications • • • • • • Level detection of mustard Dry-run protection of cream Level detection of ketchup Media differentiation Evaluation of cleaning processes Moisture determination

1.2 Options and variants LED indication The condition of the two switch points can be indicated by 360° multicolour LED's (5 colours). Indication is possible over a transparent polycarbonate collar or over a collar protected metal crown LED (King crown). Alternatively an option without LED indication is also available. Pipe assembly The construction with the reverse-threaded G3/4 connection can be mounted in a pipe. Electrical connection is made over the standard M12 connector. The pipe and the cable is not scope of our supply.

1.3 Process connections options For full information on hygienic adapters refer to the "Hygienic Accessories Data-Sheet" which is available on our website. Code Approval options Weld-in sleeve (outside Ø30 mm) Collared weld-in sleeve Weld-in sleeve with shoulder – for DN65…150 pipes Weld-in sleeve with shoulder – for DN25…50 pipes Spherical weld-in sleeve – for angled sensor mounting DN40 conical nozzle DIN 11851 Type A DN50 conical nozzle DIN 11851 Type A 3-A® DN38 weld in tank part 3-A® DN38 weld in pipe extrusion Allen screw blanking plug Table 1-1: Hygienic connections All hygienic...

1.4 Measuring principle An electrode integrated into the sensor tip forms a virtual capacitor with the environment. The medium determines the capacity value depending on its dielectric constant (DC values). The virtual capacitor and a coil built into the sensor form a resonant circuit. Depending on the resonance frequency measured and the programmable trigger type, the switch signal is activated. Figure 1-2: Measuring principle 1 Tank wall / pipe wall 2 Medium 3 Line of electric flux

1.5 Trigger modes The two outputs of the OPTISWITCH 6700 C can be configured independently. One of the three trigger modes can be selected for each switch: • Adaptive trigger mode • Window trigger mode • Analogue output 4...20 mA The adaptive trigger is a plug-and-play solution. With the adaptive trigger, manual sensor configuration is not required, since the trigger will automatically configure the output signal to react to a new medium. The adaptive trigger is very useful for applications with sticky media or for applications where the medium is changed frequently. The window trigger is...

2.1 Technical data • The following data is provided for general applications. If you require data that is more relevant to your specific application, please contact us or your local sales office. • Additional information (certificates, special tools, software,...) and complete product documentation can be downloaded free of charge from the website (Downloadcenter). Measuring system Measuring principle Frequency sweep Application range Level detection, dry-run protection and media separation of liquids and solids. Trigger modes Adaptive trigger, window trigger and analogue signal (4...20 mA)...

Operating conditions Temperature Ambient temperature (Tamb) Storage temperature Process temperature Pressure Ambient pressure Process pressure Inclusive industrial process connection: max. 100 bar / 1450 psi G1/2 A hygienic connection: max. 10 bar / 145 psi Sliding connection: max. 5 bar / 72.5 psi Derating effect on O-ring For further information refer to Pressure / temperature de-rating of internal O-ring on page 13. Other conditions Ingress protection (according to IEC 60529) IP67 (with appropriate cable) IP69K (with appropriate cable) Ambient conditions Humidity Category 2...

Process connections Variants G1/2 A ISO 228-1 or G1/2 A DIN 3852-E; G1/2 A hygienic; reverse-threaded G3/4 ISO 228-1; G1/2 A hygienic 82 mm; G1/2 A hygienic sliding connection; 1/2-14 NPT Electrical connections Voltage supply Current consumption (without load) Power-up time Reaction time Cable entry Output signal Output type Switching logic Normally open (NO), normally closed (NC), active high and active low Voltage drop Current rating Short circuit protection IO-Link interface IO-Link version IO-Link port type Baud rate Cycle time Approvals and certificates Declaration of conformity The...

G1/2 A ISO 228-1, G1/2 A DIN 3852-E and 1/2-14 NPT G1/2 A hygienic Reverse-threaded G3/4 ISO 228-1 G1/2 A hygienic, length 82 mm G1/2 A hygienic sliding connection, length 250 mm Approx. weight without adapter

G1/2 A hygienic sliding connection, length 250 mm ⑤ a Table 2-2: Dimensions and weight in mm / inch and kg / lb 2.3 Pressure / temperature de-rating of internal O-ring Figure 2-2: Pressure / temperature de-rating of internal O-ring [P]: Process pressure in bar / psi [T]: Process temperature in °C / °F 1 Silicone 2 EPDM 3 4 5 6 7 FKM (Viton®) NBR G1/2 A hygienic, max. 10 bar / 145 psi Working range 135°C / 274°F, max. 1 h