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Developed to eliminate the problem of “Nuisance Tripping”, Rota Val’s new RotaSafe RM2™ rotor monitor is claimed to represent a reliable and most advanced solution for rotary valve rotor protection.

Detection systems are required to stop a rotary valve instantly if it detects rotor to housing contact, avoiding valve damage and consequent product contamination. Even relatively minor internal valve damage almost certainly invalidates ATEX certification requirements by opening a flame path. Significant reduction of this problem can save considerable expense in repair or replacement of affected valves. The Rota Val RotaSafe RM2™ detection circuit is intrinsically safe and therefore suitable for all ATEX Zones.

Rota Val’s RotaSafe RM2™ has innovative control electronics, effectively filtering unwanted electrical noise from unavoidable sources that produce false signals. The new system is unique in that it can be adjusted to measure contact resistance at very low values, to reliably distinguish between a genuine fault contact such as product or CIP fluid conductivity. The differentiation of false from genuine signals has been a major problem with systems where their design exhibits an innate inability to adequately deal with electrical noise. Extensive testing of the RotaSafe RM2™ by a number of customers has proven successful, leading to announcement of the new monitor system to a wider market.

Rota Val Managing Director Ian Blackmore commented “This is a major advance in providing a reliable detection system to deal with common problems formerly associated with sensors on rotary valves. By avoiding nuisance tripping, manufacturers can cut unnecessary production stoppages and benefit through enhanced protection from costly product contamination. Our unique RotaSafe RM2™ has already proven effective in trial applications and patent protection has been applied for. I believe it will have an important impact on the food manufacturing industry.