Four-Function Tattletale® Annunciator

00-02-0268 Revised 03-06 Catalog Section 70

EN204 Series

Designed for Use with Electric Swichgage instruments or Normally Open, Close to Negative Contacts

LED Annunciation for Low Oil Pressure,

High Water Temperature, Loss of Battery Voltage, and Low Fuel Level or Glow Plug.

Output may be used for Tripping an Electromagnetic Control Switch for Engine Shutdown

Developed with the Same Leading Edge Technology as Our EGS Series Electric Swichgage

Description

Murphy’s EN204 Tattletale Annunciator works with other engine components to clearly indicate critical engine operating conditions. The four bright LEDs on the face of the Annunciator indicate the cause of an alarm or shutdown condition.

Two EN204 models are available. Each shows the standard critical engine operating parameters—oil pressure, coolant tempera- ture, and battery voltage. Model EN204-S- 12 also includes an indicator for low fuel level. Model EN204-SG-12 substitutes the fuel level indicator with a glow plug indica- tor for those engines that use a glow plug for easier starting.

The EN204 Annunciators are used in con- junction with Murphy Electric Swichgage instrument or other normally open switches that close to ground when a fault condition occurs. As an example, in a system with a Murphy EGS21P-100 Oil Pressure Swichgage instrument, the Swichgage clos- es to ground when the oil pressure drops below a pre-determined set point. This will energize the Oil Pressure LED on the EN204 to highlight a low oil pressure fail- ure.

A very important feature of the EN204 is the ability to interface with Murphy 518PH or the 760A Electromagnetic Switches to perform automatic engine shutdown when fault condi- tions occur. The EN204 can also be used with other Murphy visual and audible alarms (STAS series remote alarm, SAH audible alarm, and the TL7 visual alarm) for remote annunciation and equipment shutdown.

Basic Models

EN204-S-12

EN204-SG-12

Monitored

Action

Monitored

Action

Functions

Functions

 

 

 

 

 

 

Oil Pressure

Indicate and

Oil Pressure

Indicate and

 

Switched

 

Switched

Coolant

Indicate and

Coolant

Indicate and

Temperature

Switched

Temperature

Switched

 

 

 

 

Battery

Indicate

Battery

Indicate

Voltage

Voltage

 

 

 

 

 

 

Fuel Level

Indicate and

Glow Plug

Indicate

 

Switched

Energized

 

The following two basic models are offered:

The Switched functions listed above are able to sink a current up to 0.275 amps and may be used to activate the electromechanical control switches or other devices.

Specifications

Operating Voltage:

12 VDC (10 V min. - 16 V max.). Current: 0.020 A to 0.025 A per LED. Output: Sink 0.275 A.

Output Saturation Voltage:

.7-1.1 V @ 25°C.

Case and Screw-on Mounting Clamp:

Polyester (PBT).

Bezel: Bright stainless steel.

Lens: Clear Polycarbonate, UV stabilized.

Dial: Black background and white markings with four (4) Red LED indicators. Wiring: Plug connector with wire leads, 18 AWG (1.0 mm2) x 8 in. (203 mm) long.

Operating Temperature:

-40 to 185°F (-40 to +85°C).

Storage Temperature:

-76 to 185°F (-60 to 85°C).

Shipping Weight: 0.5 lb. (226 g).

Shipping Dimensions: 8 x 4 x 4-1/2 in. (203

x 102 x 114 mm).

How to Order

EN204-S-12Four-LED Tattletale annunciator and switch including Fuel Level LED

indicator.

EN204-SG-12Four-LED Tattletale annunciator including Glow Plug LED indicator.

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Murphy BN204 Series specifications Description, Basic Models, Specifications, How to Order

BN204 Series specifications

The Murphy BN204 Series represents a significant advancement in monitoring technology for engines and equipment, catering to industries that require efficient oversight of operational parameters. Designed with durability and versatility in mind, this series is ideal for use in harsh environments, making it a perfect choice for industries such as construction, agriculture, and transportation.

At the heart of the BN204 Series are its comprehensive monitoring capabilities, specifically focused on monitoring engine-critical parameters such as temperature, pressure, and fluid levels. This series features advanced sensors that can detect anomalies in real-time, allowing operators to address potential issues before they escalate into costly failures. With the integration of these technologies, the BN204 ensures optimal performance and longevity of equipment.

One of the primary features of the BN204 Series is its user-friendly interface, which allows operators to easily access data readings and make quick adjustments as necessary. The display is designed to provide clear visibility, even in low light conditions, ensuring that users can monitor their equipment effectively at all times. Additionally, the BN204 can be customized according to specific application requirements, with various models available to suit different operational needs.

The BN204 Series employs robust construction materials resistant to vibration, moisture, and extreme temperatures, which significantly enhances its reliability and extends its lifespan. Moreover, its modular design allows for easier integration into existing systems, reducing the time and cost associated with installation and maintenance.

In terms of communications technology, the BN204 Series is equipped with modern connectivity options that enable seamless integration with remote monitoring systems. This allows for real-time data transmission, enabling operators to monitor equipment performance from virtually anywhere. Such capabilities are vital for fleet management and in applications where downtime must be minimized.

In summary, the Murphy BN204 Series stands out due to its advanced monitoring technologies, user-centric design, and rugged construction. The series not only enhances operational efficiency and safety but also provides peace of mind to operators by ensuring that critical parameters are continuously monitored and that any issues are swiftly addressed. As industries evolve, the BN204 Series remains a trusted solution for maximizing equipment performance and reliability.