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OVERVIEW
ACT-1B Digital Tachometers display rotational speed directly in RPM on a
5 digit red LED display using a speed sensor providing a single pulse per
revolution (Model ACT-1B), 10 pulses per revolution (Model ACT-1B-10)
or 60 pulses per revolution (Model ACT-1B-60). Power may be either 115
Vac or 230 Vac (50/60 Hz), or optionally, 12 Vdc to 15 Vdc. The ACT-1B
Series accepts input signals from optical, proximity, magnetic, infrared or
laser sensors, or direct TTL or external ac inputs. All models are suitable for
panel mounting or bench top, with convenient screw terminal connections
on the rear panel of the instrument.
If specified at time of order placement, the ACT-1B may be equipped with
either an optional 4 to 20 mA current output (IO) or 0 to 5 Vdc analog
output (AO) proportional to speed, and/or a TTL pulse repeater output (PO).
INSTALLATION and POWER
The ACT-1B enclosure is a standard 1/8 DIN size requiring a 3.58” wide by
1.74” high (91x44 mm) mounting hole.
Figure 1 Dimensions in Inches (mm)
ACT Front View ACT Side View
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OPTIONS
IO: 4 to 20 mA current output
AO: 0 to 5 Vdc analog output
NOTE: Full scale RPM must be specified for the above
options when ordering.
PO: 0 to 5 V TTL compatible pulse output
NOTE: Pulses out per revolution equal pulses in
per revolution.
CAL-N.I.S.T. N.I.S.T. Traceable Certificate of Calibration