A-71 Recorder Charts
Strip charts are used with the A-71 recorder and
are printed on high quality paper to minimize
humidity effects. The 25 cm wide A-25 chart, for
metric measurement, is graduated in centimeters with
5 divisions per cm and is about 23 cm long. The 10
inch wide A-10 chart, for English measurement, is
graduated in inches with 0.10 inch divisions and is
25 yards long.
A-71, English Chart (A-10)
802-450
1 roll (std. 25 yd. length)
0.8 lb.
802-451
10 pack 9 lbs.
A-71, Metric Chart (A-25)
802-455
1 roll (std. 23 m length)
0.8 lb.
802-456
10 pack 9 lbs.
A-71 Recorder Pens
A special ink is used for free flow under low
temperatures. While replacement intervals depend on
chart speed and other factors, a cartridge will
provide about 610m/2000 feet of linear chart
marking.
802-460
A-71 Cartridge, Single
0.1 lb.
802-461
10 Pack 0.4 lb.
A-71 Recording Ink
This ink is used with the capillary pen with
acrylic or glass reservoir and is formulated for
free flow under seasonal temperatures and humidity
ranges.
802-490
1 oz., Dispensing bottle
0.2 lb.
802-491
16 oz., Plastic bottle
1.2 lbs.
A-71 Reversal Indicator
This indicator draws a continuous pen line on the
right margin of time chart with a long jog for
rising stage reversal and a short jog for falling
stage reversal. This accessory can be supplied on
the recorder or fitted in the field.
802-465
Reversal Indicator w/Pen
0.5 lb.
A-71
Time Marker
With this accessory, a side pen marking on the
left margin of the chart makes a jog each 2.4
inches, corresponding to 24 hours at time scale of
2.4 inches/day. The action is controlled by the
chart drive so that jogs correspond to clocktime and
not to time divisions on the chart, thus they serve
as a basis for applying corrections to the graph for
possible errors due to humidity effects.
802-470
Time Marker 1.5 lbs.
Type F Recorder
Charts
F-1 charts recommended for 32, 16, 8 & 4 day
recording. F-2 charts recommended for 2 & 1 day or
12 hour recording. See Gage Scales for F-3 chart
divisions for selecting times. Box of 54 charts.
802-475
F-1, English, 0.10 ft.
1 lb.
802-476
F-2, English, 0.10 ft.
1 lb.
802-477
F-3, English, See Gage Scale
1 lb.
802-478
F-4, Metric, Centimeters
1 lb.
Type F Recorder Pens
802-485
Type F Cartridge, Single
0.1 lb.
802-486
10 Pack 0.4 lb.
A-71
and Type F Recorder Enclosure
This is an enclosure designed to be mounted on a
stilling well pipe from 4" to 18" diameter. The
recorder mounts inside and the enclosure provides
weather and vandal protection. 1/8" aluminum,
lockable, hinged cover with 3/4 in. treated plywood
base, 30" wide x 21" deep x 15" high.
802-500
Instrument Enclosure
22 lbs.
Maximum-Minimum Stage Indicator
The maximum-minimum stage indicator, when
attached to a float tape beneath the recorder table,
will indicate maximum or minimum stage by sliding
along the tape as stage rises or declines. As the
stage changes, the tape slides through the
indicator, which will therefore stop at the maximum
and minimum stages since last set. To read,
carefully rotate the float wheel until the indicator
hits the underside of the table top and read the
gage height on the recorder or float-tape gage.
802-535
Indicator, stage, max-min, box of 50
1.2 lbs.
HydroLink Precision Ladder Chain and Sprockets
These versatile instrument and servo transmission
components have been especially designed for
hydrologic service. They employ corrosion resistant
anodized aluminum idler shaft hangers and stainless
steel flanged ball bearings. Ultra-precision
Delrin™ sprockets and ladder chain are quiet and
smooth running. Sprockets are available in 3/16",
1/4", 5/16", and 3/8" dia. used with manometers to
drive potentiometers, A-71 chart recorders, ADR's,
shaft encoders, etc. All components have extremely
low friction, even at -60° C.
802-550
Ladder Chain, 5 ft.Sprocket
0.3 lb.
|
No. of Teeth |
3/16"
|
1/4" |
5/16"
|
3/8" |
|
8 |
803-035 |
803-050 |
803-065 |
803-080 |
|
9 |
803-036 |
803-051 |
803-066 |
803-081 |
|
10 |
803-037 |
803-052 |
803-067 |
803-082 |
|
12 |
803-038 |
803-053 |
803-068 |
803-083 |
|
15 |
803-039 |
803-054 |
803-069 |
803-084 |
|
16 |
803-040 |
803-055 |
803-070 |
803-085 |
|
18 |
803-041 |
803-056 |
803-071 |
803-086 |
|
20 |
803-042 |
803-057 |
803-072 |
803-087 |
|
24 |
803-043 |
803-058 |
803-073 |
803-088 |
|
30 |
803-044 |
803-059 |
803-074 |
803-089 |
|
32 |
803-045 |
803-060 |
803-075 |
803-090 |
|
40 |
803-046 |
803-061 |
803-076 |
803-091 |
|
48 |
803-047 |
803-062 |
803-077 |
803-092 |
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Float Gage - Model 8850
