Obsolete Open Channel Flow Instruments

Open channel flow instruments have been used to measure the waste water discharge from industrial and municipal premises for many years. Many of the large textile works in the north of England had flumes with stilling wells fitted with large floats operating mechanical instruments providing readouts and mechanical counters for integrating the flow.

Air reaction systems became popular in the 1960s with the model 63 being the most popular flow recorder. Then came a profusion of electronic flow instruments offering several different measurement principals, our installed base used mainly the FPU range of flow meters being ultrasonic with optional air reaction system offered to customers with effluent discharges which could foam.

Model FPU94

Model FPU94 Open channel flow meter supplied with ultrasonic transducer for use on foam free liquids. Model FPU94B was supplied with a pressure transducer for use as an air reaction system or bubbler being ideal for solutions which foam or locations where the transducer is not accessible. Supplied 1988 / 98

Replacement instrument:- we have various models available depending upon the spec the instrument is required to meet and the local conditions. Some specifications require the whole installation to be inspected and certified. Very often the installation of a magnetic flow meter can be more cost effective. Please call us with your requirements

Model FPU2000

Model FPU2000 An excellent Open channel flow meter supplied with ultrasonic transducer for use on foam free liquids featured an optical fibre cable connection from the transducer to the instrument. The instrument was compliant with BS 3680 to provide an accuracy of better than ±8 % when installed with a compliant vee notch tank. Model FPU2000 was supplied with a 4 - 20 mA pressure transducer input for use as an air reaction system or bubbler being ideal for solutions which foam or locations where the transducer is not accessible. Supplied from 1998.

Replacements:- we have some spares available for this excellent instrument, we also have various models available depending upon the spec the instrument is required to meet and the local conditions. Some specifications require the whole installation to be inspected and certified. Very often the installation of a magnetic flow meter can be more cost effective. Please call us with your requirements.