A spasm in the feet or toe is called a carpopedal spasm. Carpopedal spasms are usually accompanied by numbness, tingling, or a âpins-and-needlesâ feeling. Muscle weakness, fatigue, cramping, twitching, and uncontrolled, purposeless, rapid movement are not an uncommon occurrence with carpopedal spasms either. Some common causes of spasms are: 1  Hypocalcemia (calcium deficiency) 2  Vitamin D deficiency. 3  Muscle cramps (Most often caused by sports or occupational muscle injury)
A remote terminal unit is a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects. Other terms that may be used for RTU is remote telemetry unit or remote telecontrol unit.
RE: Two Stage Recuperator Effectiveness 25362 (Chemical) 21 Feb 05 04:30 The effectiveness of each recuperator (regenerator?) is a function of the number of transfer units NTU max = AU/C min. Where C min = (mc) min I leave it to yourself to see what happens with NTU with the two units in series, when the mass flow rates and the heat capacities values are equal for both sides ie, the ratio (mc) cold /(mc) hot = 1.