Lufft VS20k-UMB User Manual Download Page 1 | Manualshive

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Summary of Contents for VS20k-UMB

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Page 2: ...5 Installation 7 6 Connections 8 6 1 Screw in connector 8 6 2 Power supply 8 6 3 RS485 interface 8 6 4 Current output 8 7 Commissioning 9 8 Configuration 9 8 1 Factory settings 9 8 2 Configuration wit...

Page 3: ...Channel assignment for data requests 13 10 4 Mapping standard 14 11 Technical Data 15 11 1 Visibility 15 11 2 Storage conditions 15 11 3 Operating conditions 15 11 4 Electrical Data 15 11 5 Interfaces...

Page 4: ...d lamp systems Please observe the following safety instructions Do not look into the beam directly An exposure of more than 500s can lead to damage to the eye Avert your eyes for at least 60s after a...

Page 5: ...converter ISOCON UMB 8160 UISO Power supply 24V 4A 8366 USV1 Surge protection 8379 USP Calibration kit 8366 UKAL2 3 3 Spare parts Connection cable 10 m 8366 UKAB10 Connection cable 20 m 8370 UKAB20 3...

Page 6: ...the 42 forward scattering principle1 The particles in the field of measurement e g fog droplets scatter the infrared light emitted by the transmitter The receiver measures the rate of scattered light...

Page 7: ...VS20k UMB Make sure that a distance of 2 m 6 5 ft in front of the measurement aperture is free of any kind of objects masts trees grass bushes etc Installation sketch WARNING Only approved and tested...

Page 8: ...manently damaged You may risk an electric shock 6 2 Power supply The VS2k UMB VS20k UMB is powered by 24VDC The power supply unit must be approved for operation with equipment of protection class III...

Page 9: ...ngs The VS2k UMB VS20k UMB is supplied with the following settings Device ID 1 Baud rate 19200 RS485 protocol UMB binary Current output VS2k UMB 4 20 mA corresponding to 0 2000 m linear Border contras...

Page 10: ...al will show you an example of an online data request For more information about the protocol please download the document UMB Protocol on www lufft de 10 1 1 Framing Der Daten Frame ist wie folgt auf...

Page 11: ...device ID the following address will result 3001h 12289d 10 1 4 Example of a binary protocol request If for example a visibility sensor with the device ID serial number 0001 is to be polled from a PC...

Page 12: ...mode Start value FFFFh Warning In contrast to earlier Lufft protocols in this case the start value for CRC calculations is not 0h but FFFFh according to CCITT Further information can be found in the...

Page 13: ...The following channel assignment is valid for online data request in binary protocol In the ASCII protocol all channels are transmitted in the mapping standard Channel Data type Measurement unit Meas...

Page 14: ...ments are averaged over the configured time period 10 4 Mapping standard Mapping standard Visibility value range 0 65520 0 32760 m 0 32 76 km 0 107480 315 feet 0 20 3561203 miles Ambient temperature v...

Page 15: ...de packaging 11 3 Operating conditions Permissible operating temperature 40 C 60 C 40 F 140 F Permissible rel humidity 0 100 r H 11 4 Electrical Data Voltage supply 20 30 VDC typical 24 VDC Current co...

Page 16: ...ng on resetting and start of the calibration must be at least 90 s 13 Service and maintenance In order to have the instrument work smoothly we suggest to regularly carry out the following checks and m...

Page 17: ...t must not be disposed of as household waste For environmentally sound recycling and the disposal of your waste equipment please contact a certified electronic waste disposal company 15 Manufacturer F...

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