... perform relevant work: including sand feeding, agitating, blending, dry additive operation,suction and discharge pump operation.It is a unitized ... system, including liquid level control, density control, liquid additive control, dry additive control and discharge control system. Data acquisition, feedback and ... (37.8) 53(200) 90(340)Displacement of dry additive system gpm(L/min)27(102)Volume of blending ...