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Counter, Totalizer, Event Transmitter (Part of the NOMAD®Family) OM-CP-RFPULSE101A


- Programmable Engineering Units
- Automatically Converts your PC
- into a Strip Chart recorder
- Low Battery Warning
- Miniature Size
- Interfaces to Tipping Bucket Rain
- Gauges or Pulse Output Flow Meters
- Real Time Operation
- Programmable Scale Factor/Offset
- Value Basic Unit


The OM-CP-RFPULSE101A is a low-cost transmitting device that will sense a pulse input or contact closure from external sources such as transducers or pulse initiators (gas, water, and electric meters) and transforms those inputs into engineering units such as gallons/minute. Once activated, the OM-CP-RFPULSE101A senses and transmits the number of pulses/ contact closures that occur within adjacent "time bin" periods. The bin period is 30 seconds to 12 hours. At the end of each bin period, the total number of pulses/counts is transmitted.

The OM-CP-RFPULSE101A then starts another bin period. It will also transmit the current status of its input. This is ideal for recording the status of a contact closure. Data is received at the PC using our receiving antenna that attaches directly to the serial port. All received data is time and date stamped and stored directly in your PC. Transmitted data is also logged to the device’s memory for added data security. The convenient slide switch allows the transmitter to be turned On or Off without affecting the operation of the device.

The Windows software converts your PC into a real time strip chart recorder. Data can be printed in graphical or tabular format and can also be exported to a text or Microsoft Excel file.


Maximum Pulse Rate: 100 Hz
Minimum Input Active (Low) Time: 4 ms
Minimum Input Inactive (High) Time: 4 ms
Input Signal: TTL, dry contact, inernal pullup, +30 Vdc max
Input Low Signal: < 0.4 Vdc
Input High Signal: < 2.7 Vdc
Input Connection: Screw terminal
Input Impedance: > 1 K .
Readings: 4095 readings with selectable memory wrap
Recording Interval: 30 seconds to 12 hours, selectable in software
Range: 36 m (120 ft) line if sight
RF Baud Rate: 4800 baud
RF Carrier Frequency: 418 MHz
RF Transmitter Operation: Configurable in software
RF Transmission Interval: 30 seconds to 12 hours, selectable in software
Start Time: Start time and data programmable through software, up to six months in advance
Real Time Recording: Device may be used with PC to monitor and record data in real time
Engineering Units: Stored in device, user may define any desired scale and offset from ±1.0000E-31 to ±9.9999E+31
Power: 3.6 V lithium battery (included)
Battery Life: At 15 minute reading rate, 25°C: up to 6 months (100 Hz input, 10% duty cycle); up to 1 year (25 Hz input, 10% duty cycle); up to 5 years (1 Hz input, 1% duty cycle)
Time Accuracy: ±1 minute/month (at 20 to 30°C)
Data Format: Date and time stamped pulses, other engineering units programmable through software Direct Computer Interface: PC serial, RS-232C COM or USB (interface cable required), 57600 baud
Software: XP SP3/Vista and 7 (32-bit and 64-bit)
Operating Environment: -20 to 80°C (-4 to 176°F) 5 to 95% RH non-condensing
Dimensions: 35 x 54 x 15mm (1.4 H x 2.15 W x 0.6 D)
Enclosure: ABS plastic


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