Murphy BN204 Series specifications Four-Function Tattletale Annunciator, EN204 Series

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.

Installation 00-02-0268 page 1 of 2