Measures & displays tachometer output frequency in Hz, RPM or
%RPM
The Accutach is a versatile hand-held, battery operated instrument that
can be used in a wide variety of aircraft measurement and calibration
applications.
The following examples show its versatility:
- Measure the rotation of a turbine rated at 12,000 RPM at 100% that
drives a 70Hz tach generator at 100%.
- Measure the speed of a rotor system rated at 450 RPM at 100% using a
magnetic pickup with three single interrupters and one double
interrupter.
- Measure propeller RPM using the 1-per-rev pulse from a
synchrophasor.
The Model 9600 features a microprocessor that measures input signal
period, computes the frequency, controls the display, monitors the
keyboard, and stores settings. The keyboard consists of a power ON key,
RESET key, display LIGHT key, display CONTRAST control, and four MODE keys
for data entry and access to the software menu.
A CHANNEL knob is provide to select up to four input signals from
connector J1 or a single input signal from connector J2.
Specifications |
| Display |
1 Line by 16 Character Liquid Crystal Display, Backlighted |
| Input Frequency Range |
100 to 100,000 PRM, (1.6 to 1600 Hz) |
| Accuracy |
0.1% +/- 1 Count |
| Display Update Period |
0.6 second, nomial |
| Averaging |
Exponential Weighing |
| Input Signal Type |
Tach Generator, Magnetic Pickup, TTL |
| Maximum Input Signal |
150 V peak AC |
| Minimum Input Signal |
0.5 V peak |
| Input Selection |
Four inputs from (J1), and one input from (J2) |
| Battery |
Four AA size alkaline cells |
| Battery Life |
75 hours, nominal (Operating), 1 Year, nominal (Off) |
| Auto Shut-Off |
Powers down after two minutes with no input signal, to save
batteries |
| Low Battery Indicator |
A warning message is displayed if battery voltage drops below 4
Volts, nominal |
| Operating Temperature |
0 to 50 Degrees C |
| Chassis Dimensions |
7.7" x 3.9" x 1.6" (excluding connectors, knob)
(19.6cm x
9.9cm x 4cm) |
| Weight |
1.5 lbs (.68 kg) nominal (including batteries) |
| Finish |
Ground support equipment yellow textured paint |
| EMI |
Meets MIL-STD-461B |
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Product information provided by Chadwick-Helmuth.
Copyright© 2000, All rights reserved |
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