AD-VL 8 A1, AD-VL 8 A4, AD-VL 8 A8


The VarioLog AD-VL 8 is used for the visualization of up to 8 independently parameterizable analog signals with simultaneous data logger function of all channels. Each channel has a current/voltage input and can be freely scaled. There are different types of display, including a trailing indicator function (display of the highest and lowest value). Several linearization functions and a table with 24 x/y points enable signal adaptation to non-linear signal sources, e.g. to display volume versus height. A scale display unit can be selected from a list. A measured value is displayed as a number and can also be represented by a quasi-analog bar. All parameters can optionally be programmed and archived via PC (AD Studio). The recorded measured values can be recorded for each channel in freely adjustable storage cycles on an SD memory card. In addition, trigger thresholds are possible for starting the storage function, with one channel triggering any other channel.

AD-VL 8 A1, AD-VL 8 A4, AD-VL 8 A8


Display of up to 8 independent analogue input signals in freely scalable dimension and unit.

Specific characteristics

  • Wide range power supply
  • scalable analog displays
  • graphic display of measured values
  • presettable counters
  • rolling channel display
  • Drag pointer function
  • free linearization tables
  • definable channel names
  • predefined unit list

Business data

Order number
Customs tariff number / country of origin 8542 31 90 / Deutschland


Data sheet pdf en-vl8.pdf (211 kB)
Instruction manual pdf man-vl8-ad-en.pdf (354 kB)
Safety instructions pdf ad-safety-instructions.pdf (43 kB)

Technical specifications

Current inputs
Range 0 ... 20 mA
Input resistance 120 Ohm
Voltage inputs
Range 0 ... 10 V
Input resistance 100 kOhm
Range 0 ... 20 mA; 0 ... 10 ... 24 V
Input resistance I: 120 Ohm; U: 100 kOhm
Switching thresholds Adjustable
Frequency < 2 Hz
Graphic-LCD 122x32 Pixel, background lit
Digital display 5-digit, can be configured
Unit 0,3%
Resolution 10 Bit
Temperature influence < 100 ppm / K
Update rate 1 s
Supply voltage 20 ... 253 V DC / 50 ... 253 V AC
Max. power consumption 2 W / 4 VA
Software AD-Studio
Connection cable Klinkenkabel
Converter AD-Vario-Pass-3
Protocol AD-UART
Data format 19200, e, 8, 1
Data logger
Storage medium SD- oder MMC-Card <= 2GB
Disk formatting FAT, FAT12, FAT16
Log files Daily files, text
Dimensions (WxHxD) 96 x 48 x 136 mm³
Type of protection IP 20
Connection method Pluggable screw terminal
Terminals, wire cross section 1,0 mm² Strand with wire end ferrule / 1,5 mm² one wire
Bolting torque terminals 0,6 Nm
Skinning length 6 mm
Weight ~ 280 g
Manner of fastening Panel-mounting
Front panel cut out 92 x 44 mm
Environmental conditions
Ambient temperature -10 ... +50 °C
Storage and transport -10 ... +70 °C (no condensation)
Product family standard EN 61326-1
Emitted interference EN 55011, CISPR11 Cl. B, Gr. 1
In a critical EMC environment, shielded encoder cables are recommended.
Electrical safety requirements
Product family standard EN 61010-1
Overvoltage category II
Pollution degree 2
Galvanic isolation, test voltages
Input No separation
Signal/auxiliary voltage 3 kV RMS 50 Hz (1 min.)

Block and wiring diagram

AD-VL 8 A1, AD-VL 8 A4, AD-VL 8 A8


AD-VL 8 A1, AD-VL 8 A4, AD-VL 8 A8

CAD / CAE Daten

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