Rotameters are general purpose, direct reading, relatively simple instruments. Where a reliable sensitive repeatable indication of instant flow rate can be obtained required for process control, Or other purposes. The construction of this type of Rotameter is like consisting of essentially a vertical mounted tapered, calibrated glass tube with a float inside it. Shreeji manufacturer of Process Control Instruments offers various type of Rotameter includes "SMALL GLASS TUBE TYPE ROTAMETERS " used for flow rate measurement in process control applications. SMALL GLASS TUBE ROTAMETERS is a low range rotameters for purging or low flow range measurement available with flow control valve. D.P. Regulator High and low flow alarms contacts in connection = 1/4" BSP rear standard or on request. It comes with Accuracy : ± 2% in full flow and with Range : Between 10 to 5000 NLPH of air at NTP.