Tattletale annunciators and magnetic switches are the nerve centers that translate Swichgage® contact operations into decisions and operate the alarm or shutdown device.
These switches are the electrical load carrying devices for the alarm or shutdown device. Tattletale annunciators indicate which monitored function failed leading to the alarm or shutdown magnetic switches do not. Magnetic switches operate basically as a latching relay.
Specialized battery charging systems and DC standby power supplies made to customers’ specifications.
Enovation Controls has the ability to manufacture to customer’s individual requirements. Shown right are examples of small volume custom designs. Please contact us with your requirements.
The Sentinel 150P is a range of highly efficient, high performance battery chargers designed for continuous float charge and standby power applications.
Switch Mode technology improves efficiency and low heat dissipation, wide supply voltage tolerance and low output ripple all within a compact and lightweight construction design. The chargers are configured for fast, accurate charging to give optimum battery life and reliability. Each charger’s output can be OEM-configured for optimal charging of different cell types: vented/wet lead acid, Calcium-Calcium, sealed VRLA (AGM or Gel), NiCd or custom requirements. The very smooth output (< 1% ripple) allows charging of sealed or vented batteries or use as a standalone power supply.
Murphy Sentinel 300P series battery chargers provide automatic, fast and accurate charging of standby batteries.
Sentinel advanced chargers ensure optimal battery power, lifetime and reliability in demanding applications such as power generators, fire-pumps, and critical engine-driven equipment. Switch mode power technology gives a low-ripple DC charge output, plus wide AC supply voltage tolerance, in a compact, light and power-efficient package. Unlike some generic chargers, Sentinel’s multistage DC output is optimized for your battery type and application – Lead Acid or NiCd; sealed or vented cells; ‘wet’, AGM or Gel electrolyte; lead antimony or calcium plates, cell temperature – all critical factors for maintaining battery health, preventing under/over charge and ensuring peak performance.
The RP75 Rack Puller is a semiautomatic device that provides a pulling force to initiate shut down of diesel engines and equipment.
The RP75 connects to the injection pump or air intake shut-off lever via a cable (chain optional). A coil spring, within the RP75, is reset manually and is held in place by an electromagnet. When the Swichgage® detects a malfunction, the electromagnetic circuit is interrupted through a magnetic switch — releasing the coil spring thus pulling the cable/chain to actuate shutdown. When fully compressed, the spring exerts a pull of 30 lbf (133 N). The RP75 is available for 12- or 24-VDC applications and is compatible with all Swichgage instruments.
The Murphy Push/Pull DC Solenoids provide single unit versatility for engine applications, such as shutdown.
One solenoid offers pull/push operation. The RP Series has no internal switches, reduces coil burnout and reduces adjustments while boosting reliability. The solenoid offers high force in its small size. It can be used with most engines’ start systems. A choice of two models and two voltages is available. All models come complete with return spring and rubber seal boot.
The CO3 is an electrically controlled and driven actuator for automatic operation of two position, lever action equipment.
Primarily designed to engage and disengage over-center clutches on engines, the CO3 has a wide variety of applications such as opening and closing of pipeline valves, engagement and disengagement of pumps, fixture positioning in automated process control, etc. The positive action screw-type actuator is fully adjustable for length of stroke up to 6 inches (152 mm). The CO3 motor is equipped with an overload clutch that slips if overloaded. In addition, the motor is protected with an automatic reset thermal overload. The CO3 is available for 12 or 24 VDC applications and is compatible with MURPHYMATIC® start-stop engine controllers.
The AT03069 is a completely reliable heavy-duty device developed specifically to automatically control engine speed to meet system demand.
Low current, high torque, solid-state switching and an electronic clutch make it ideal for all automatic and semiautomatic engine systems. Used with the appropriate Murphy Swichgage® near constant pressure, level and load can be maintained. Speed changes are made slowly and smoothly. The device saves fuel, engine wear, horsepower and labor. One model can be used with both 12- and 24-VDC systems. Check with our engineers for help with other applications where speed control can improve your system.
The ESPS and ESTS series are engine-mounted oil pressure and coolant temperature measurement sensors with both resistive sender and fault limit switch outputs.
The resistive sender outputs have the same pressure/temperature versus resistance characteristics as the Murphy ES series senders, allowing use with EG(S)21 series gauges or Swichgages, engine/genset controllers or input/output modules (e.g. the Murphy MeCAN™ interface).
Switch output contacts are normally open (at normal running pressures and temperatures), with the contacts closing to sensor body/case ground when pressure falls below, or temperature rises above, the factory set limits. The switch outputs can be used with external control devices to signal fault conditions, and trigger operator warning and/or engine shutdown protection. For example, the contacts can be used in place of, or in addition to, EG(S)21 Swichgage outputs, to provide two-staged limits for warning and shutdown.
EMEA Region Only
A magnetic pickup is an AC generator.
It is normally installed into the flywheel housing of an internal combustion engine, so that the starter ring gear acts upon it to generate a voltage pulse each time a gear tooth passes the end of the sensor.
Thermocouples are encased in a 1/4 inch diameter 316 stainless steel tubing sheath with stainless steel Bell Spring for strain relief.
The initial offerings are K type thermocouples with 6-inch and 10-inch long 1/4-inch diameter probes. The thermocouples are shipped straight but can be bent with standard tubing benders anywhere along its length to a 90° angle to minimize clearance required and help prevent damage due to personnel working on the unit. The thermocouple is tip sensitive to minimize ambient temperature influence and should be inserted between 25% and 75% of the piping inside diameter or enough to minimize any skin temperature affect on the tip of the probe when installed in vessels.
The Model 12 Air Temperature Sensor is intended for use in applications that monitor slowly changing temperature.
The unit gives approximately .5 °F (.25 °C) resolution when used with an 8-bit analog input.