The DrX range of industrial switches provide rapid and simple indication of process change without requiring numerical analysis or historical data collecting - they simply indicate a change of measured parameter from normal operation. Modules can monitor vibration, temperature, mechanical noise, cavitation, flow, angle, ultrasonic noise, bearing wear, etc. Detection of increased amplitude is signalled by a relay contact closure, and the indicator light turning from green to red. Calibration is by the turn of a screw.
The modules are specifically designed not to provide numerical data or analogue outputs; they are merely condition monitoring switches, alerting the user to an increase in measured parameter and alarming in order to avoid catastrophic results.Further details can be found at  ~~~601~738~~
Dr Knock: Mechanical Noise Detector~Use to detect impulse noise from mechanical sources such as loosening of nuts and bolts, excessive 'chatter', water hammer, cavitation in pumps, mechanical tapping, loss of lubrication, nucleate boiling, irregular fluid flow, resonance of rotating machinery, worn brake shoes and discs, solenoid valve actuation, etc. Applies to all industries with mechanical components as part of their process. Also applies to pipework systems where water hammer is a problem.    ~~P270-010-1 DrKnock|413|~601~742~~ Dr Hiss: Fluid Leak Detector~Use to detect any type of leaks from tanks, pipes and containers under pressure or vacuum. Leaks also occur on valve seats, injector nozzles, seals and gaskets. As the units detect very high frequency emissions then they are also used as detectors of electric arcs in sealed housings such as contact breakers, etc. Applicable industries are wide ranging covering most process plant. Sites dependant on steam to any degree will benefit immediately from reducing their losses. Similarly Dr Hiss can be applied to any user of compressed air or vacuum systems. ~~P270-010-2 DrHiss|412|~601~740~~ Dr Rumble: Mechanical Wear Detector~Use for early detection of wear in bearings or other rotating machinery. Using the high frequency noise characteristics which bearings exhibit, and examining their low frequency components, wear can be detected well in advance of failure or 'running rough'. The characteristics of classic ovoid wear are found throughout industries such as automotive, marine, power engineering, conveyor systems, rolling mills, paper and pulp production, aerospace, mining and quarrying, etc. ~~P270-010-3 DrRumble|414|~601~744~~ Dr Vibe: Vibration Detector~Low frequency vibration increase indicates system imbalance. The area of detection (0.6 -2.7g up to 300Hz) can indicate instability in process systems such as water hammer, loss or wear of damper mechanisms or shock absorbers, change from laminar to turbulent flow, loss of load, overdriving engines, compressors, generators, etc. Any industry employing transport devices such as cranes or conveyors, screen or shaker equipment, as well as all aspects of power generation, motors, pumps, turbines, compressors, or other moving equipment has potential for applications of Dr Vibe. ~~P270-010-4 DrVibe|415|~601~746~~ Dr Heat: Temperature Rise Detector~Temperature rise often indicates loss of system control or impending failure. In the range -25°C to +85°C an increase could indicate loss of refrigerant, poor lubrication in gearboxes and bearings, temperature control systems failure, heat exchanger or heat pump faults, electrical switchgear breakdown, etc. There are a wide range of uses in all aspects of process industries; any small process plant could benefit from the simple application of these devices. Food industry and cold storage in particular, are provided with a completely independent means of monitoring potential catastrophe ~~P270-010-5 DrHeat|416|~601~748~~ Dr Cool: Temperature Loss Detector~Temperature loss indicates loss of heating, system blockage or breakdown. In the range - 25°C to +85°C a decrease can indicate faults in hot water supplies, oil coolers, air conditioning outlets, exhaust venting systems, chimneys, process control system failure, lubricant pump breakdown, etc. Any industry dependent on steady state heating as part of its process can benefit from using independent monitoring equipment. ~~P270-010 DrCool|417|~601~750~~ Dr Sonic: Audible Noise detector~Audible noise is a reliable indicator in various systems where other parameters are not available. For example, the downstream detection of flow in an air conditioning system can often be heard before any temperature or humidity change, and where actual flow measurement of low density fluid is difficult. Similarly the 'buzz' of a transformer is one of the few indications outside of its electrical operation that can be detected. As 'Dr Sonic' deals specifically with acoustic ranges then any signal we can hear is a reasonable candidate to be detected with this unit. Applications and industries are widespread - from the detection of footsteps on a fixed steel gantry ladder to logging the mating calls of death-watch beetle from a set of wooden beams! ~~P270-010-7|418|~601~752~~ Dr Flow: Liquid Flow Verifier~Detection of liquid flow in pipes is an important independent measurement to verify control gear such as valves and pumps are operating correctly upstream. These modules are designed to operate in the audio spectrum and therefore detect audible 'trickles' caused by irregularities in the pipe system. The noisier areas of tubing are generally downstream from unions, joints, valves or even bends. Any flow that is turbulent or partially filled also has good monitoring characteristics for this sensing method. Flows from as little as those found in 12mm piping in domestic hot water supplies can be monitored. Installation of 'Dr Flow' is particularly simple on pipes by using hose clips or 'tywraps'. ~~P270-010-8 Dr Flow|419|~601~754~~ Dr Tilt: Tilt and Acute Angle Detector~Tilt detection is important for structures such as bridges, radio masts, temporary buildings on volatile sites (such as open cast mining and land fill). Similarly the inclination of moving objects such as ships, cranes, land moving vehicles, quarrying equipment, etc., all have a critical over-tilt angle. Indication, monitoring and detecting excessive angle is useful to both the site operator and the machine operative. This information is useful for health and safety audits, structural soundness (effect of high winds), and a positive independent warning of catastrophic failure. ~~P270-010-9 Dr Tilt|420|~601~756~~ Dr Snap: Mechanical Insertion Assembly Checker~Many systems rely on the sound of an audible 'click' when two parts are assembled. 'Dr Snap', originally developed for automotive cable harness test rigs, listens for an ultrasonic component of the 'snap' which is a significantly cleaner indication of the reliability of the joint. 'Dr Snap' can be applied to any 'snap-fit' location mechanism which may not be heard due to surrounding production noise. This can be electrical connectors, plastic hoses, plastic fittings, circlips, push-to-fit fixtures, etc. ~~P270-010-10 Dr Snap|421|~601~758~~ Engineers Investigation Kit~In order to solve the problem of 'what to monitor', we provide a series of 'Engineers Investigation Kits' for initial testing purposes. These kits contain five different DrX detectors, complete with all necessary connectors, instructions, and on-site weatherproof tag labels. The kits are: Plant: Vibe, Knock, Hiss, Rumble, Heat Process: Cool, Knock, Hiss, Rumble, Heat Fluids: Flow, Sonic, Hiss, Cool, Heat Assembly: Snap, Knock, Rumble, Sonic, Heat ~~P270-011-0 EIK plant|422|P270-011-1 EIK process|423|P270-011-2 EIK fluids|424|P270-011-3 EIK assembly|425|~601~760~~ |