42213 Sarah Way, Temecula, CA 92590,
Tel: 800-854-8530 (USA)
Micro Series Stopwatch
Resolution down to 0.2 µs
for timing of fast, one-time
- Available in three digit heights:
0.56" for panel mounting,
1.0" (Mighty-1) or
5.0" (Mighty-5) for
- Times single events from 1
µs to 999,999 hrs
- Selectable display of single event time
or accumulated time of all events.
- 6-digit red or green LED display.
- Selectable H, M or S
- Inputs from NPN or PNP proximity
switches, contact closures, digital logic, magnetic pickups down to 12 mV, or AC inputs up
to 250 Vac.
- Triggers on positive or negative pulse
- Isolated 5, 10 or 24 Vdc excitation
output to power sensors.
- 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).
The Micro stopwatch
meter can time single events
from 1 µs to 999,999 hrs, with a resolution down to 0.2 µs for fast
events. It can time processes which
produce start and stop pulses, or time the width of a single pulse. The display
is updated continuously during timing of slow events.
Timing is achieved by counting 5.5 MHz
clock pulses. Micro stopwatch
timers use the FR dual-channel signal conditioner and Extended counter
The event time (Item #1) may
be displayed H, M or S
six-digit resolution. The longest single-event timing interval is 999,999 hours. The highest resolution is
1 µs. The event time
may also be displayed in HH.MM.SS clock format with 1 s resolution.
The stopwatch display is updated during timing
at a rate controlled by a gate time, up to 25/s. It is reset to zero when the next start
pulse occurs. Accumulated time from multiple events (Item #2) is also tracked and may be
displayed up to 999,999 hours.
The dual-channel signal
conditioner used for pulse detection accepts inputs from proximity switches with PNP or
NPN output, TTL or CMOS logic, magnetic pickups, contact closures, and other signals from
12 mV to 250 Vac. Jumper
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,
boards can upgrade Micro and Mighty Series stopwatch meters from a stand-alone display to system interface and control. The
ability of the instruments to output an isolated 4-20 mA signal which tracks
time may be
unique among stopwatches.
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.
All power and signal connections are via plug-in screw-clamp connectors.
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
With CH A only
With CH A tied to CH B
With CH A and CH B
Selectable Decimal Time
Selectable Clock Time
Output & Display Update
+ to + edge, or - to - edge.
+ to - edge, or - to + edge.
+ edge of A to + edge of B, + edge of A to - edge of B,
- edge to A to - edge of B, - edge of A to - edge of B
1 µs to 999,999 hrs
1 µs to 1 hr
999999 H, M or S format with decimal point
Gate time + 30 ms
Programmable from 10 ms to 199.99 s
calibrated to ±2 ppm
±1 ppm/°C (typ)
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
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted
The stopwatch mode is used to time single events between
start and stop pulses on the same channel. Duration of a single wave shape can be measured
by tying the A and B channels together.
Timing Process Dynamics
The start and stop pulses used for timing can be generated
by the dual relay board in a Micro analog panel meter or digital counter. For
the start and stop pulse edges can be created as temperature passes two alarm setpoints,
or temperature cycles in a hysteresis control mode.
Replacing an Oscilloscope with a Micro
An oscilloscope is great for viewing and
timing pulses in a lab. However, in fixed installations where digital
timing accuracy and control outputs are required, a low-cost Micro time
stopwatch or interval meter will be the instrument of choice. Resolution to 0.2 µs is
Instrumenting a Pulsed Laser System
The diagram below illustrates some of the many possibilities in instrumenting a pulsed
laser system with Micro dual-channel counters: elapsed time, number
of pulses, pulse width, pulse separation, duty cycle, and pulse rep
Micro & Mighty Series Downloads