Dynalco LST-100L Tachometer Instrukcja Użytkownika Pobierz pdf (Strona 2)

1. Calculating Signal Frequency (in Hz)

Multiply RPM times the number of teeth (or discontinuities), then

divide by 60. For example, sensing a ring gear with 113 teeth rotating

at 1800 RPM gives a frequency of 3390 Hz.

Signal Frequency in Hz =

Signal Frequency in Hz = = 3390 Hz

2. Calculating Gate Time (In seconds)

Divide the number to be displayed on the LST-100 or LST-100L

by the corresponding signal frequency.

Gate Time = = 0.53 seconds

3. Gate Time Range Selection on 4-Position Switch

Select either position for each number pair on the switch:

Position 1: 0.26–0.72 sec. Position 2: 0.72–1.43 sec.

Position 3: 1.43–2.85 sec. Position 4: 2.85–5.70 sec.

4. Pulse Rate Multiplier: Required gate time

divided by ten:

jumper terminals 4 to 5. The input pulse rate will be multiplied

by ten times. K Required gate time

divided by one hundred:

jumper terminals 5 to 6. The input pulse rate is multiplied by

one hundred.

(RPM) x (Teeth or Discontinuities)

(1800 RPM) x (113 Teeth)

1800 RPM

3390 Hz

Dynalco Controls, 3690 N.W. 53rd Street, Ft. Lauderdale, FL USA 33309

 (954) 739-4300 • Fax (954) 484-3376 • www.dynalco.com • [email protected]

LST-100 and LST-100L are trademarks of Dynalco Controls

DYNALCO CONTROLS RESERVES THE RIGHT TO CHANGE THESE SPECIFICATIONS WITHOUT NOTICE.

OUTLINE AND CONNECTION DRAWING

Optional Calibration Method: On-engine

A. Select the appropriate gate time range on the 4-position switch.

B. Connect the magnetic pickup output to terminals A & B.

C. Adjust vernier potentiometer on LST-100 or LST-100L until its

display agrees with another precise digital tachometer.

1 2

Brak uwag

Dynalco LST-100L Tachometer Instrukcja Użytkownika Strona 2