• Chart Recorder

Chart Recorder

  • Long-term unattended operations
  • Low power usage
  • Ideal in areas with high lightning potential

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The Stevens Type F Chart Recorder is a portable recorder that provides a continuous water or tank level record in graphical format.

The Type F is used either as a primary device or as a very reliable backup instrument to record water or tank level. A single chart can provide up to 32 days of continuous level recording.
The Type F chart recorder's real-time graph shows the water level against a record of time. The range of chartable water level is limited only by the length of the float line and float size. The Type F is often used simultaneously with electronic data loggers. The Stevens A/F Encoder or SDI-12 Encoder can easily by attached directly to the Type F to transmit water level measurement to a data logger or used for transmission of water level or flow information.

  • A true real-time, immediate charted measurement
  • Long-term unattended operations
  • Low power usage
  • Portable
  • Highly accurate and permanently records the varying levels of any liquid surface without electronic processing
  • Easy to install and maintain
  • Ideal in areas with high lightning potential


Inches (cm) Per Day Chart Life Value of Smallest Chart Division
0.3 (0.76) 32 days 8 hours
0.6 (1.5) 16 days 4 hours
1.2 (3.05) 8 days 2 hours
2.4 (6.1) 4 days 1 hour
4.8 (12.2) 2 days 30 minutes
9.6 (24.4) 1 day 15 minutes
19.2 (48.8) 12 hours 7.5 minutes

0.01 foot (3 mm) at 1:1 scale using 5 inch (127 mm) diameter float
0.002 foot (0.6 mm) using a large enough float


Quartz multi-speed timer with eight “D” cell batteries or 6 to 14 VDC external supply


10 in. (254 mm) with cover closed


14.25 in. (362 mm) not including pulley


9.5 in. (241 mm)


25 lbs (11.33 kg) approx.