135-100 Series Analog Signal Conditioning

The 135-100 Series Translator Boards are a complete line of analog signal conditioning interfaces for almost any sensor input and desired output. Circuit boards utilize the latest technology in low-power solid-state components. They can be used individually or in combinations to create customized systems. NEMA-4X, mast mount, 19" rack mount, and desktop enclosures are available.

The 135-102 D-to-A Conversion Board converts digital pulses to voltage or current output. Use with tipping bucket rain gauges or other pulse output devices like contact anemometers or flow sensors. The circuit accumulates switch closure events and converts the events into a linear increasing dc output. When the circuit accumulates its maximum count the output resets to zero and starts the process over again.

The 135-104 General Purpose Translator Board is designed to support up to three separate analog sensors and one wind speed sensor, producing four independent analog output signals, one for each sensor. The board is designed for applications requiring either desktop enclosure, rack mounted enclosures, or outdoor, box mounted enclosures. A +12 Vdc power source is required for circuit operation. Typical power consumption for the translator board is approximately 30 mA.

The translator board can be configured to provide one of three difference types of output signals; 0-5 Vdc, 0-1 mA or 4-20 mA, 400 ohms maximum load. Sensors can be configured for any one of the three types of output signals or all three sensors can be set for the same type of output signal. All sensor input wiring and output signal wiring is accomplished using circuit board terminal blocks. The circuit board has been designed to eliminate customer calibration of the circuitry. On most of the printed circuit boards manufactured by NovaLynx, there are no potentiometers for adjusting input or output signal levels. All board calibration is accomplished by selecting precision resistors to set the output span and zero to match the characteristics of the sensor as well as to meet the requirements of the user.

Ordering Information

135-102 D-to-A Conversion Board
The following must be specified when ordering:
Number of events required for full scale (0-1000 is standard)
DC output: 0-1 or 4-20 mA, or 0-5 Vdc

135-104 General Purpose Translator Board
The following must be specified when ordering:
Sensor model for each input channel
Full scale scaling and units (example 0-100 mph, -40° to +120° F)
Desired output on each channel 0-5 V, 4-20 mA, 0-1 mA (select one)