
42213 Sarah Way, Temecula, CA 92590,
USA 
Tel: 8008548530 (USA)
Tel: 9516992437
Fax: 9516957246
sales@electronumerics.com 

Micro Series DualChannel
Up/Down Totalizer & Rate Meter
With two independently scalable channels &
presets
Standard
Counter
 Available in three digit heights:
0.56" for panel mounting,
1.0" (Mighty1),
and
5.0" (Mighty5) for
longdistance viewing.
 Independent, scalable totals for
Channels A & B.
 Totals stored in nonvolatile
memory.
 Inputs from NPN or PNP proximity
switches, contact closures, digital logic,
magnetic pickups down to 12 mV, or AC inputs up
to 250 Vac.
 Up counting from zero to preset
value using positive scale factor.
 Down counting from preset to zero
using negative scale factor.
 Data rates up to
1 MHz.
 Isolated 5, 10 or 24 Vdc
excitation supply to power sensors.
 Green or red LED display.
 Choice of isolated plugin
options for control and computer interface:
dual
relays,
420 mA & 010
V analog output,
RS232/485 serial I/O,
low voltage AC & DC power.

1/8 DIN
version environmentally sealed to NEMA4X from front panel.
 1/8 DIN
version certified to UL 31011, CAN/CSAC22.2,
EN 610101 (CE Mark).
Extended Counter
All capabilities
of the Standard Counter, plus:
 Channel A total and Channel B
rate simultaneously.
 Up/down counting on Channel A,
using Channel B to control count direction.
 Counting on Channel A, using
Channel B to inhibit counting.
 Arithmetic functions A+B, AB,
A*B, A/B

Description
The
Micro dualchannel up or down totalizer is a basic operating mode of the
Micro counter with the FR dualchannel signal conditioner board.
Each channel (A or B) may be independently set
up and scaled to count up from zero (or other value) to a preset limit, or to count down
from a preset value to zero (or other limit). Countdown operation is set up by entering a
negative scale factor.
The sixdigit counter display is capable of
displaying any value from 999,999 to 999,999 with programmable decimal point. Scaling
allows direct readout in engineering units, such as gallons or cubic feet based on counts
from a turbine flowmeter, or the count of cans based on the count of sixpacks. The
displayed channel (A or B) is selected via a front panel pushbutton. The totals are stored
in nonvolatile memory so as to be retained in the absence of power.
The minimum recommended complementary option
for the Micro totalizer is the dual setpoint controller output board, which is
available with either 8A relays or AC/DC solid state relays.
Extended Counter
Capabilities
An optional Extended
counter version provides capabilities beyond those of the standard counter:
Rate and total simultaneously. Channel
A can display total while Channel B displays rate. The selection of A or B for display is
via a front panel pushbutton. This mode is ideal for flow applications.
Up/down counting. Channel A
can serve as an up/down counter, where the count direction is dynamically changed by
applying a signal to Channel B. For instance, Channel A can count and scale pulses from a
turbine flowmeter, while Channel B inputs the direction of flow. This allows total volume
to be tracked in case of reversible flow.
Totalizing with external inhibit. Totalizing
by Channel A can be temporarily inhibited by applying a signal to Channel B. For instance,
60 Hz AC pulses can be counted by Channel A and be scaled to display elapsed hours. A
signal can be applied to Channel B to start or stop pulse counting when a process is in
operation.
Custom curve
linearization.
Exceptionally accurate custom curve linearization is achievable, for
example to
linearize the low end of turbine flowmeters. For setup, up to 240 data points can be
input into a spreadsheet or text file by the user. The computer then calculates
spline fit segments, which are downloaded into the meter via RS232. The linearized rate can then be
totalized by the Extended counter.
Arithmetic functions. The
Extended counter makes arithmetic functions available, namely A+B, AB, A*B, A/B and
A/B1. These solve many applications. For instance, A+B allows two input flows to be
summed for total volume, while AB allows outflow to be subtracted from inflow for net
volume. A/B allows the mixing of ingredients in a specified ratio. By monitoring and
alarming the A/B volume ratio, ingredient B can be added to A until the proper ratio is
achieved.
Universal Signal Conditioner
The dualchannel signal
conditioner accepts inputs from proximity switches with PNP or NPN output, TTL or CMOS
logic, magnetic pickups, contact closures, lowlevel outputs from turbine flow meters down
to 12 mV, and highlevel AC line inputs up to 250 Vac. Jumper
selections provide optimum operation for different sensor types and noise
conditions.
A builtin isolated 5, 10, or 24 Vdc
excitation supply can power proximity switches and other sensors, and eliminate the need
for an external power supply.
Builtin Flexibility
Plugin
isolated analog
output, dual relay controller,
and
RS232/485
serial communication boards can
upgrade Micro and Mighty Series totalizer from a standalone monitor to system interface and control. The
ability of the Micro Series totalizer to output an isolated 420 mA signal which tracks a total may be
unique among totalizers.
Micro Series
meters can be powered from
95240 Vac ±10% and 95370 Vdc, or
optionally from 1234 Vac and 1048 Vdc.
Any setup functions and front panel keys may be locked out for
simplified usage and security. The popular
1/8
DIN version with 0.56" high digits is environmentally sealed to
NEMA4X (IP65) from the front when panel mounted, and is
available with red or green LEDs.

Specifications
Display 
Readout
Digit Height
Color
Range
Indicators 
6 digits, 7segment
Available with 0.56", 1.0", 4.0" or 5.0" digits.
High brightness red. Green available with 0.56" digits.
999999 to +999999,
XXXXEX scientific notation beyond 999999
Four LED lamps 
Inputs 
Types
Signal ground
Channel A Frequency
Channel B Frequency
Selectable Hysteresis
Rolloff Filter
Debounce Time 
AC,
pulses from NPN, PNP transistors, contact closures, magnetic pickups
Common ground for channels A & B
0 Hz to 1 MHz
0 Hz to 250 kHz
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 
Power 
Voltage,
std.
Voltage, opt.
Frequency
Power isolation 
95240 Vac ±10% and 95370 Vdc
1234 Vac and 1048 Vdc
DC or 49440 Hz
Safetyrated to 250 Vac, meter ground to earth ground,
DC to 60 Hz, 4.2 kVp per High Voltage Test 
Excitation Output 
5
Vdc
10 Vdc
24 Vdc
Output isolation 
5
Vdc ±5%, 100 mA max
10 Vdc ±5%, 120 mA max
24 Vdc ±5%, 50 mA max
50 Vdc to meter ground 
Environmental 
Operating Temperature
Storage Temp.
Relative Humidity
Protection 
0°C
to 60°C
40°C to 85°C
95% at 40°C, noncondensing
NEMA4X (IP65) when panel mounted 
Electrical Connections 

Typical
Applications 
Up/Down Totalizing 

Up/down totalizing is provided by a mode
of the Extended counter where pulses are either added or subtracted on Channel A based on
a direction input on Channel B. The counter can also be programmed so that counting by
Channel A is inhibited by an input on Channel B. 
Combining Two Totals 

A+B, AB and A/B arithmetic functions are
available with the Extended counter. A+B sums both totals, while AB subtracts the outflow
total from inflow total. The A/B ratio applied to total helps assure the proper mixing of
components. 
Up or Down Counting with Preset 

A single Micro dualchannel counter
will handle two repetitive fill operations by counting from zero up to a preset, or down
from a preset to zero. A dual setpoint relay board is required. 
Machine ON Time and Utilization 

An easy way to measure the ON time of
machines is to count AC line cycles and scale the total to hours. To display machine
utilization or duty cycle in percent, use the Extended counter. Connect Channel A to
switched AC and Channel B to the AC line, and have the counter display the A/B ratio with
a 100 multiplier. 
Total and Rate Simultaneously 

The Extended version of the
Micro dual
channel counter can display scaled rate or total for the same channel at the push of a
button, and alarm both the rate and total. The Extended version can also do
curve linearization, thereby extending the working range and accuracy of flow
transducers. 
Systemlevel Capabilities 

The Micro Series dualchannel totalizer can
independently scale, display and alarm two totals, and the totals plus alarm data can be
transmitted via RS232 or RS485. The displayed totals can also be transmitted as
a scaled 420 mA analog output. The Extended version can further display
and transmit arithmetic combinations of the two totals. 
Micro & Mighty Series Downloads
