42213 Sarah Way, Temecula, CA 92590,
Tel: 800-854-8530 (USA)
Micro Series Phase Angle
For angular phase offset in degrees
- Available in three digit heights:
0.56" for panel mounting,
5.0" (Mighty-5) for
- Measures phase angle between two waveshapes of similar
- Resolution of 1º, 0.1º or 0.01º.
- .01% accuracy at AC line frequency
- Inputs from NPN or PNP proximity switches, contact
closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up to 250 Vac.
- Trigger on positive or negative pulse
- Frequency from .005 Hz to 10 kHz.
- 6-digit red or green LED display.
- Isolated 5, 10 or 24 Vdc excitation
output to power sensors.
- Uses Standard counter main board and FR
- Choice of isolated plug-in
options for control and computer interface:
4-20 mA & 0-10
V analog output,
RS232/485 serial I/O,
low voltage AC & DC power
case environmentally sealed to NEMA-4X from front panel.
- 1/8 DIN
version certified to UL 3101-1, CAN/CSA-C22.2,
EN 61010-1 (CE Mark).
Phase Angle Measurement
Phase angle measurement
requires that two signals with identical periods be applied to Channels A and B. A display
from -180º to +180º is obtained by timing the rising edge of one channel
and the falling edge of the other channel, and programming a 180º offset.
A resolution of 1º, 0.1º or
0.01º is selectable. Accuracy is 0.01% up to 100 Hz, 0.1% at 1 kHz, and 1% at 10 kHz.
Phase angle measurement is commonly used with
AC power from 50 Hz to 400 Hz. Phase angle needs to be set to zero to synchronize AC
generators. It also applies to the triggering of SCRs and Triacs for power control. The
phase angle between AC current and voltage determines power factor. Micro
angle meters provide exceptionally fast response and high accuracy for low
frequencies, such as AC line frequency.
Phase angle is determined by timing crystal
clock pulses over a specified gate time which is selectable from 10 ms to 199.99 s. By
selecting the minimum gate time of 10 ms, the update rate can be up to 20/s for 50/60 Hz
AC line frequency. Improved accuracy is obtained by making the gate time long enough so
that multiple cycles can be averaged.
Micro phase angle meters use the FR dual-channel signal conditioner board and Extended counter main
Universal Signal Conditioner
The dual-channel signal
conditioner accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS
logic, magnetic pickups, contact closures, and AC signals from 12 mV to 250 Vac.
selections provide optimum operation for different sensor types and noise
A built-in isolated 5, 10, or 24 Vdc
excitation supply can power proximity switches and other sensors, and eliminate the need
for an external power supply.
output, dual setpoint controller,
serial communications boards can
upgrade Micro and Mighty Series phase angle meters from a stand-alone monitor to system interface and control.
meters can be powered from
95-240 Vac ±10% and 95-370 Vdc, or
optionally from 12-34 Vac and 10-48 Vdc.
Any setup functions and front panel keys may be locked out for
simplified usage and security. The popular
DIN version with 0.56" high digits is environmentally sealed to
NEMA-4X (IP65) from the front when panel mounted, and is
available with red or green LEDs.
Maximum Timing Interval
angle difference between two waves of same period
1°, 0.1°, 0.01°
.005 Hz to 10 kHz
.01°, .005 Hz to 100 Hz, .1° at 1 kHz, 1° at 10 kHz
6 digits, 7-segment
Available with 0.56", 1.0", 4.0" or 5.0" digits.
High brightness red. Green available with 0.56" digits.
-999999 to +999999
Four LED lamps
pulses from NPN, PNP transistors, contact closures, magnetic pickups
Common ground for channels A & B
-12 mV to +12 mV, +30 mV to +60 mV, -30 mV to -20 mV,
-150 mV to +150 mV, +350 mV to +600 mV, -600 mV to -350 mV,
-1.15 V to +1.15 V, +1.25 V to +2.1 V, -2.1 V to -1.25 V
Selectable: 1 MHz, 30 kHz, 250 Hz
Selectable: 0, 3, 50 ms
Output & Display Update
time + 30 ms + 0-2 signal periods
Selectable 10 ms to 199.99 s
Selectable 10 ms to 199.99 s
Same as period timing interval
95-240 Vac ±10% and 95-370 Vdc
12-34 Vac and 10-48 Vdc
DC or 49-440 Hz
Safety-rated to 250 Vac, meter ground to earth ground,
DC to 60 Hz, 4.2 kVp per High Voltage Test
Vdc ±5%, 100 mA max
10 Vdc ±5%, 120 mA max
24 Vdc ±5%, 50 mA max
50 Vdc to meter ground
0°C to 60°C
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted
Phase Angle Mode
Phase angle indicates the lead or lag in degrees from 0º
to 360º between two periodic signals having the same frequency. In the illustration,
phase angle is 360*P1/P. The signals are applied to the A and B input channels.
Using Micro Meters and Counters to Synchronize Motor Generators
Synchronization of two motor generators
requires that the two frequencies be identical, that the lines be in phase, and that the
line voltages be close to each other. In this illustration, a single Micro dual channel
counter measures both frequencies to six-figure accuracy in a few line cycles. Another
Micro dual channel counter measures phase angle to 0.1º resolution. Two Micro AC
RMS Voltmeters, which offer ranges of 200.00 V and 660.0 V, are used to display the two
RMS voltage to 0.1% accuracy.
Micro & Mighty Series Downloads