How the SPL Works

 

How the 45TE Works

 

 

 

 

 

 

SPLC and SPLFC SWICHGAGE® temperature indicator gages include 2 pilot duty, pointer-type limit contacts (one for high and one for low) that can be used for alarm and/or shutdown. The SPLC and SPLFC models will complete a cir- cuit when the gage pointer and either limit contact meet. This provides an elec- trical signal to alert the operator of critical temperature conditions or, when required, to shut-down the equipment.

Both limit contacts (high and low) are field adjustable by simply turning the fingertip type knob to the desired point on the scale dial.

The graphic below shows details of a typical SPLFC SWICHGAGE® model.

 

 

Dial Cutaway

Pointer

 

to Show

 

 

Mechanism

250

270

 

230

 

 

TEMPERATURE

200

 

 

 

 

MURPHY

170

SWICHGAGE®

TULSA, U.S.A.

°C

°F

 

350

 

 

Low Limit

 

 

Contact

 

High Limit

Adjustment

Contact

 

 

Adjustment

SPL Series

SPLFC model shown

The 45TE series SWICHGAGE® incorporates 2 SPDT snap-switches instead of the pointer-type contacts of the SPL. Unlike the SPL that completes an elec- trical circuit as soon as the pointer touches the contact, the 45TE trip point indi- cators will stop the pointer movement slightly before the switches operate. As temperature continues to increase (reaching high set point) or to decrease (reaching low set point), the electrical circuit is then made. It provides the abili- ty to set the trip point exactly with the indicator needle—no guessing or equip- ment calibration is needed as on blind switches. The 45TE trip points (high and low) can be easily set using its stacked knob adjustment. See the schematic below for details.

High Trip Point

 

 

Dial Cutaway to

Indicator

 

 

Show Mechanism

Pointer

 

270

Low Limit

250

 

Snap-switch

 

 

 

230

 

 

 

200

 

 

 

 

 

MURPHY

 

170

TULSA, U.S.A.

 

°C

 

°F

 

 

 

Low Trip Point

 

 

High Limit

Indicator

 

 

Snap-switch

 

 

 

45TE Series

 

 

Stacked Knob

 

 

Adjustment

45TEF model shown

(BP) Latch Relay Contact Models

Primarily designed to maintain a specific temperature range by turning ON or OFF heaters or coolers having 125 VAC circuitry, the SPLBP and 45TEBP SWICHGAGE® models are applicable to a variety of situations where tempera- tures are variable and controlling factors. As the pointer touches a preset high or low limit contact/snap-switch, the magnetic latching relay sets or resets to latch

a heater or cooler ON or OFF. The relay unlatches, (resets) when the opposite contact operates. Pictured below is a typical application.

For applications with higher voltages, a Murphy TR assembly can be used in conjunction with any 4-1/2 in. (114 mm) dial SWICHGAGE®.

SPLBP

Latching Relay

Terminal Block for

 

 

 

customer wiring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

270

390

 

 

250

 

310

 

 

 

TEMPERATURE

 

230

 

320

 

 

 

MURPHY

 

170

SWICHGAGE®

330

TULSA, U.S.A.

 

°C

350

 

°F

 

 

Pointer

Low Limit

 

REMOTE COOLER

Coolant line

ENGINE

Power

 

 

 

 

 

Supply

ON

OFF

 

 

 

High Limit

 

 

 

Capillary Tube

Sensing Bulb

(not shown)

SPL/45-94117B page 3 of 4

Page 3
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Murphy specifications How the SPL Works How the 45TE Works, BP Latch Relay Contact Models

SPL specifications

Murphy SPL, or Murphy Smart Power Link, is a cutting-edge technology designed to optimize power generation and management for industrial applications. It serves as an intelligent monitoring and control system that facilitates effective energy management in various sectors, including manufacturing, oil and gas, and renewable energy. With the goal to enhance operational efficiency and reduce costs, Murphy SPL encompasses several main features, technologies, and characteristics.

One of the standout features of Murphy SPL is its ability to provide real-time monitoring of power consumption and generation. This system utilizes advanced sensors and data analytics to track energy usage patterns and identify inefficiencies. By collecting this data, operators can make informed decisions about energy distribution, minimizing waste and optimizing performance.

Another key characteristic of Murphy SPL is its remote accessibility. The integrated cloud-based platform allows users to access critical power management data from anywhere in the world, using any smart device. This remote capability is crucial for industries that operate in remote locations or have multiple sites, offering flexibility and convenience for monitoring and management.

Murphy SPL also boasts robust predictive maintenance technologies. Through continuous monitoring and machine learning algorithms, the system can forecast potential equipment failures before they occur. This predictive capability not only reduces downtime but also extends the lifespan of machinery, leading to significant cost savings over time.

Moreover, the system incorporates advanced security protocols to safeguard sensitive data. With increasing concerns around cybersecurity in industrial processes, Murphy SPL prioritizes data protection through strong encryption methods and regular system updates.

Compatibility is another significant attribute of Murphy SPL. The system is designed to seamlessly integrate with existing power generation equipment and other industrial machinery, reducing the need for extensive retrofitting or system overhauls.

Overall, Murphy SPL represents a revolutionary advancement in energy management technology. Its combination of real-time monitoring, remote accessibility, predictive maintenance, and robust security protocols positions it as a leader in the field. With these features, Murphy SPL not only enhances operational efficiency but also provides businesses with the tools necessary for sustainable growth in a rapidly evolving energy landscape.