Linearcorders Analog Recorder – WR3320A

  The WR3320A Linearcorder Mark VII is a thermal writing pen oscillograph which has been designed to meet the standards required by even the most exacting of professionals, including government agencies all over the world. This is a proud testament to their reliability and legendary performance.
The Linearcorder Mark VII is capable of recording high-speed phenomena of up to 140 Hz, and can therefore be used for a wide range of applications — from production sites to the laboratory. The WR3320A can be configured as a 1-, 2-, 3 or 4- channel recorder with an amplitude of 80 mm. per channel or as a 2-, 4-,6 or 8- channel recorder with an amplitude of 40 mm. per channel. (40 and 80 mm. channels).

Continuous Recording Up to 200 Meters

Both roll and Z-fold paper can be used with the WR3320A. 100 meter lengths stock inside the recorder, while an optional Z-fold chart supply box with a take-up tray enables the use of 200 meter lengths. Roll paper can be rewound simply by pressing the REWIND switch, and an automatic roll chart take-up unit is available as an option.

Multiple Remote Control Functions

Remote control functions such as pen heat on/off, chart feed start/stop, synchronization with an external pulse, output of paper-end signal, input of event marker signals, and input/output of time marker signals enable automated, unmanned operation.

1 V d.c. Reference Voltage Output

Rear panel reference voltage output connectors enable easy calibration whenever plug-in units have been exchanged. The reference voltage output used for calibration is 1 V d.c.

What’s in a Name?

The WR3320A was previously referred to as the WR3310. This is the same instrument — only the name has changed slightly, to keep up with our continuous quality improvements.

Main Features

  • Models from 1 to 8 channels
  • 40 or 80 mm wide channels available
  • Legendary Graphtec quality and reliability
  • Plug-in signal amplifiers
  • Bandwidth (frequency response): dc to 140 Hz
  • Sprocket drive chart paper eliminates drift and skew
  • High quality, low maintenance pen writing
  • Selectable chart speeds
  • Time marker along left chart edge


With 40mm Wide Channels

  • WR3320A-2 (2 channels)
  • WR3320A-4 (4 channels)
  • WR3320A-6 (6 channels)
  • WR3320A-8 (8 channels)

With 80mm Wide Channels

  • WR3320A-1D (1 channel)
  • WR3320A-2D (2 channels)
  • WR3320A-3D (3 channels)
  • WR3320A-4D (4 channels)

Options & Upgrades

For 40mm Wide Channels

  • AL3301 Medium Gain Amp 5mV to 100V/cm
  • AH3301 Medium Gain Amp 1mV to 500V/cm
  • AS3301 Zero Suppression Amp 5mV to 20V/cm

For 80mm Wide Channels

  • AL3302 Medium Gain Amp 2.5mV to 50V/cm
  • AH3302 Medium Gain Amp 1mV to 250V/cm

Other Options

  • TC-01 IRIG time code interface
  • TC-02 NASA time code interface
  • A variety of options are available, including roll chart take-ups, shipping cases, additional event markers, and many more

   » Download the WR3320A Brochure/Spec Sheet 791KB

 » Contact Graphtec Instruments Sales Team For Dealers

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