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HewTech Electronics LLC has recently developed a low-cost Quantity Gauge for Fuel-Level measurement for vehicles / systems using LIQUEFIED NATURAL GAS (LNG) as a Cryogenic stored Fuel. The Model SSU-33/240M is a signal conversion, liquid level sending unit (Fuel Level Measurement unit). The device interprets the measurement signal received from the sensor probe and converts it to a liquid-level measurement. This measurement is displayed using a common 33~240 ohm GM automotive-type FUEL gauge (ordered separately). The design takes into consideration low-voltage directive (LVD) and intrinsic-safety practices by using a low 3.3 volts DC circuit power & total DC signal isolation to the probe. Module power is from a typical 12 Volt vehicle battery. 24VDC system is available as an option.
The control unit utilizes a RISC microcontroller to precisely monitor the tank probe level and permanently store calibration values internally. Simple 1 finger push-button calibration quickly sets the EMPTY (0%) & FULL (100%) levels of the tank. The FUEL gauge is automatically scaled to the calibrated values. The design easily handles various probe lengths and cables with a wide range of characteristic capacitance.
A
SERIAL port is also integrated into the module to allow RS232 / USB interface
for LAPTOP calibration if desired.
SPECIFICATIONS: SSU33-240-M SENDER MANUALREV-A.pdf
Enclosure:
IP54/65 (NEMA 4/5 Dust & Moisture proof) This product represents what can be developed for your specific application) For additional LNG information "CLICK HERE"
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