AETNA ENGINEERING LCD Tachometer Model 8905 Bedienungsanleitung
PREMIUM QUALITY FOR UNEXCELLED RELIABILITY
The tachometer measures one of the most important operating parameters of an engine - RPM.
Your engine represents a substantial investment. Protect it with quality instrumentation.
Only top quality "mil-spec" workmanship and premium grade materials are used. This includes
moisture-proof glass/epoxy circuit boards with double thickness copper and an exceptionally wide
temperature range Liquid Crystal Display. The non-magnetic construction uses only brass,
stainless steel, and passivated aluminum hardware. The gasketed glass to metal seal is
impervious to moisture.
Easy to install on gasoline or diesel engines. Just three wires connect. Self-contained unit
easily replaces existing standard-size tachometers. Choice of either polished stainless steel
or black anodized aluminum bezel.
>~~
Sender Model 8901
For Diesel Engines Tachometer Model 8905
LCD Readout Trim Ring
Optional Flat Black
TrimRing Bezel
TACHOMETER SPECIFICATIONS
Tachometerrange 0 to 9999 Revolutions Per Minute
Tachometerresolution One Revolution Per Minute
Tachometeraccuracy Within plus or minus 1 revolution
Tachometerreadout type Four fully active LCD digits
Tachometerdisplay intensity Soft backlighting for night viewing
Data update rate Approximately once per second
Ratio settings: switch selectable (other ratios by special order)
Gasoline engines 3, 4, 6, 8,12,16 cycles (4 cycle)
Direct driven alternators 3,4,6,8,12, 16 poles
DieseL 2, 3,4,6,8,12,16 pulses/rev.
Diesel sender output Eight pulses per sender revolution
Diesel sender drive ratios 0.25:1, 0.5:1, 0.75:1, 1.0:1
Diesel sender fittings SAE Marine 7/8-18 mount, 0.187 tip
Nominal input voltage 13.6 volts DC
Inputvoltage range 6.8 to 38 volts DC
Power consumption (@13.6 VDC).. 30 mAtypical, SOmAmaximum
Operating temperature rangE) -10 C to +80 C (+14 Fto 176 F)
Storage temperature range -55 C to +82 C (-67 F to +180 F)
Operating humidity range 0 to 95% R.H., non-condensing
Package construction Passivated aluminum, non-magnetic
Interconnectionterminals Brass studs (3), #8x32
Warranty, limited Two years
HOUR-METER SPECIFICATIONS
Hourmeter display size 1" x 0.03"
Hourmeter range 6 digit display
(1st digit =1110thof hour)
Hourmeter update Update every 6 minutes
Hourmeter accuracy Within plusor minus 0.02%
Input voltage range 9 to 38 volts DC
Operating temperature range -40 C to +85 C
Start time 250 engine Revolutions per Minute
Data retention Tenyears data retention (w/o power)
Specifications subject to change without notice.
(E 1£ AETNA ENGINEERING
0-379 Lake Michigan Dr. NW, Grand Rapids, MI 49544 USA
Toll Free: 1-800-776-7962 Phone: 231-223-9867 Fax: 231-223-9467
REV.6/04
101028
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