Altek 941 Quick Start Manual

ALTEK
MULTI-FREQUENCY CALIBRATOR
• 0.001% ACCURACY
Locked to high stability crystal
• SIX REAL-WORLD RANGES
1 to 20000 Counts-per-Hour
0.1 to 2000.0 Counts-per-Minute
0.01 t0 999.9 Hertz
0.1 to 9999.9 Hertz
0.001 to 99.999 kilohertz
0.01 to 250.00 kilohertz
®
• "QUIK-CHEK SWITCH
Store 18 values for instant recall
Three memories for each range
• THREE OUTPUT WAVEFORMS
Sine Waves, Zero Crossing
Square Waves, Zero Based
Square Waves, Zero Crossing
• SIMULATE & MEASURE DRY CONTACTS
Add module for relay contacts
Calibrate your turbine meters, frequency counters, vibration
systems, tachometers, vortex shedders, integrators and any
other frequency devices in the shop, plant or field. Measure from
0.01 Hz to 250.00 KHz with resolution down to 0.01Hz. For your
slower signals source or measure from 4.0 to 2000.0 Counts per
Minute (CPM) or from 10 to 20000 Counts per Hour (CPH).
Quickly indicate process signals...no more waiting around with
stopwatch and calculator.
"SOURCE MODE" FUNCTION GENERATOR
Select sine wave outputs to simulate vibration pickups and
variable speed drives and square waves to simulate flowmeters
and magnetic pickups. Any frequency from 0.01 Hz to 250.00
KHz can be sourced in four frequency ranges to calibrate
tachometers, counters, data loggers, turbine meters and
frequency transmitters. For low frequency applications such as
positive displacement flowmeters, Watt-hour meters, slow rate
integrators and assembly line counting, the Model 941 sources
signals as low as 1 CPH (0.0002777 Hz). Amplitude is adjust-
able from 50 millivolts to 12 Volts peak-to-peak.
Three "QUIK-CHEK" output values are remembered for each
range. Turn the knob to check trip points, controller action and
to control variable speed drives. The fast response 941 sets
quickly without overshoot but allows slow changes at your own
rate. Memory is retained for each range even when power is off.
MODEL 941
GENERAL DESCRIPTION
"READ MODE" MEASURES WIDE RANGE
Use out in the field to check the signals from your flowmeter
pickups, velocity and motion detectors, Frequencies can be
directly measured from 0.01 Hz to 250.00 KHz in four frequency
ranges.
Measure extremely slow frequencies (<1 Hz) with high reso-
lution using CPM & CPH. Instead of displaying 1/2 Hz as 0.5
Hz(1 digit of resolution) as with most with frequency counters
you can display it as 30.0 CPM (3 digits of resolution) or as 1800
CPH (4 digits of resolution). You can now measure these slow
signals in seconds with the Model 941 instead of the minutes
needed with a totalizer, stopwatch and calculator. Signals
from 30 mV to 240 V peak-to-peak with a minimum pulse width
of 2 microseconds can be measured.
Use for months without replacing the batteries. Six "AA" alkaline
batteries provide more than 40 hours of continuous output or
more than 80 hours of continuous frequency measurement. An
optional AC adaptor can be used when the battery is low or for
continuous bench and field use.
ALTEK INDUSTRIES CORP
OF FREQUENCIES AND WAVEFORMS