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倍加福LFL3-CK-U-PVC5液位测量浮子式开关
Vibration Limit Switch
LVL-A*
- Level limit switch for liquids
- External test option using test magnet
- On-site function control using external LED display
- Large selection of process connections for hassle-free installation in existing systems
- Easy to install even at points difficult to access due to compact design
- Rugged stainless steel housing
- Suitable for medium temperatures up to 150 °C (302 °F)
- Cost-saving plug connections
帮助
PDF版完整参数表
ENG
DEU
参数表节选：的技术参数 LVL-A*
| Application | ||
| Function principle | The tuning fork is brought to its resonance frequency by means of a piezoelectric drive. If the tuning fork is covered by liquid, this frequency changes. The electronics monitor the resonance frequency and indicate whether the tuning fork is freely vibrating or is covered by liquid. | |
| Input characteristics | ||
| Measured variable | density | |
| Measurement range | min. 0.7 g/cm3, other density (e. g. 0.5 g/cm3) settings on request | |
| Auxiliary energy | ||
| Electrical connection |
This device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements. output B3: version AS-Interface output E5: version DC-PNP with M12 x 1 connector or valve connector output WA: version AC with valve connector |
|
| Supply voltage |
output B3: 24.5 ... 31 V DC (AS-Interface) output E5: 10 ... 35 V DC output WA: 19 ... 253 V AC, 50/60 Hz |
|
| Power consumption |
output B3: < 825 mW output E5: < 825 mW output WA: < 810 mW |
|
| Current consumption |
output B3: < 25 mA output E5: < 15 mA output WA: < 3.8 mA |
|
| Operating conditions | ||
| Ambient conditions | ||
| Ambient temperature |
outputs E5, WA: -40 ... 70 °C (233 ... 343 K) output B3: -25 ... 70 °C (248 ... 343 K) |
|
| Storage temperature | -40 ... 85 °C (-40 ... 185 °F) | |
| Mechanical specifications | ||
| Protection degree |
IP65 with valve connector IP66/67 with M12 x 1 connector PPSU (plastic) |
|
| Mechanical construction | ||
| Dimensions |
LVL-A1-V1: diameter 31.5 mm (1.24 in), length 148.5 mm (5.8 in) LVL-A1-P*: diameter 40 mm (1.57 in), length 161 mm (6.3 in) LVL-A1-PS: diameter 40 mm (1.57 in), length 155 mm (6.1 in) LVL-A5-V1: diameter 31.5 mm (1.24 in), length 173 mm (6.8 in) LVL-A5-P*: diameter 40 mm (1.57 in), length 185.5 mm (7.3 in) LVL-A5-PS: diameter 40 mm (1.57 in), length 179.5 mm (7.1 in) |
|
| Mass |
LVL-A1: approx. 210 g LVL-A5: approx. 270 g |
|
| Material |
vibration fork, process connection and housing: stainless steel 1.4435/316L connection: PSU |
|
| Certificates and approvals | ||
| Application |
The general authorization by the board of suveyors must be obtained for the site of installation. It is accessible together with the technical description and the certificate from Pepperl+Fuchs. |
|
| Overspill protection |
Z-65.11-314 (overspill protection in acc. with WHG) Z-65.40-315 (leak detection system) |
|