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Chart Recorder from Stevens

Chart Recorder from Stevens

Product Code:Type F


Need more Info? (514) 354-2511 - 1-800-463-4363

The Stevens Type F Water Level Recorder quickly became a favorite mechanical chart recorder with hydrologists and technicians who appreciated its real-time accuracy. Through the years, this proven design has been adopted as the worldwide standard. Over 40,000 Stevens Chart Recorders have been installed and used both as a primary and backup instrument to record water level. Flow data may also be obtained when used with weirs, flumes or where water level is an index to flow.

The Type F 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 fl oat 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 fl ow information.

Time scales relate to the rate that the pen travels across the chart, and are expressed in inches (cm) per day(s). The following table shows how long the chart paper will last at various time scales:
 

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

 

Features
  • A true real-time, immediate charted measurement
  • Long-term unattended operations
  • Low power
  • Portable chart recorder
  • 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

 

Applications
  • Stream gaging
  • Groundwater level measurement
  • Irrigation canals
  • Tank levels
  • Dam and reservoir level

 

Technical Specifications
Accuracy
  • 0.01 foot (3 mm) at 1:1 scale using
  • 5 inch (127 mm) diameter float
  • 0.002 foot (0.6) using a large enough float
Power Quartz multi-speed timer with eight “D” cell batteries or 6 to 14 VDC external supply
Size
  • Height - 10 inches (254 mm) with cover closed
  • Length - 14.25 inches (362 mm) not including pulley
  • Width - 9.5 inches (241 mm)

Approximate shipping weight 25 lbs (11.32 kg)

The Stevens Type F Chart Recorder comes with batteries for the QMT, one pack of chart paper (54 sheets), one cartridge pen, and a cover for the recorder.

 

Ordering Information
Floats & Counter-Weights
Part # Description Size
20442 Copper Float 1 2.5 in (63 mm)
20445 Copper Float 1 4 in (102 mm)
20446 Copper Float 1 5 in (127 mm)
20447 Copper Float 1 6 in (153 mm)
20449 Copper Float 1 8 in (203 mm)
48210 Counterweight 1 3 oz
48211 Counterweight 1 4 oz
48213 Counterweight 1 6 oz
48214 Counterweight 1 8 oz
Pulleys, Float Line & End Hooks
Part # Description Size
10318 Pulley for beaded line 375 mm
10322 Pulley for float tape 375 mm
10160 Pulley for beaded line 18 inch
10165 Pulley for float tape 18 inch
23994 Float line-beaded 2 6 in bead spacing
19343 Float line-beaded 2 125 mm bead spacing
15147 End hooks n/a
27371 Float tape - blank 2 6 inch center
27370 Float tape - blank 2 12.5 cm center
Gage Scale Gearing
Part # Description Level Change for 1 Revolution of Chart
30470 1:1 metric 0.3 meters
30471 1:2 metric 0.6 meters
30472 1:5 metric 1.5 meters
30473 1:10 metric 3.0 meters
30474 1:1 english 1.0 foot
30475 1:2 english 2.0 feet
30476 1:5 english 5.0 feet
30477 1:10 english 10.0 feet
Chart Paper, Ink & Accessories
Part # Description
90037 F-1 (English) charts, 4 pack
10311 Guide pulley for float line
90030 Cartridge pen, 12 pack
90040 F-4 (metric) charts, 4 pack
10313 Guide pulley for float tape
12082 Cover with viewing port
90043 Type A/F Encoder attachment
91274 SDI-12 Encoder attachment
1. Other non-standard fl oat and counter weight size/confi gurations available. Please contact Stevens.
2. Specify length of fl oat line or fl oat tape. Please contact Stevens for graduated fl oat tape options.


 

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