Enhance Your Alarm Indication with the Light / Horn Accessory

Enhance Your Alarm Indication with the Light / Horn Accessory
Precision Digital offers many options for using the Light / Horn accessory on its line of meters and controllers. The use of the Light / Horn greatly enhances your alarm indication for almost any process application.

Quick Overview of the PDA-LH Light/Horn Accessory

The PDA-LH Light / Horn comes in 3 configurations – choice of five single colors (red, green, yellow, blue, or white), a 3-layered light (red, yellow, and green), and a light that the user can change to any one of five colors (red, green, yellow, blue, or white).

Light Horn Accessory Configurations

The Light / Horn can be wired to flash (not available on PDA-LH5C) or stay steady on and the horn is rated at 85 dB.

The relays on Precision Digital meters and controllers like the ProVu, Helios, Trident, and ConsoliDator+ can be used to drive the light and horn during low and high level alarm conditions, and with separate relays, the light and horn can be controlled independently.

Since the meter's or controller’s relays can be reset in a variety of ways, there are several ways the Light / Horn can operate. For instance, the horn can be programmed to silence at any time and turn the light off automatically when the alarm clears. This can be done with the ProVu using a Reset Button or the F3 Button, the Helios using a Reset Button, and the ConsoliDator+ using a Softkey.

The Light / Horn easily installs into Precision Digital enclosures along with its meters and controllers making it a perfect all-in-one alarm application system.

Light Horn Accessory Mounted on PDA2301 Enclosure

Application Example 1:

In the this example, a PD6001 ProVu level meter is mounted into a PDA2301 enclosure with the Light/Horn accessory added on. This MOD-LH system is in a wastewater plant monitoring the level of a tank and it displays the level in feet and inches. The relays trigger the light and horn during high and low level alarm conditions.

Light Horn Accessory Mounted on PDA2301 Enclosure

Light/Horn mounted on a PDA2301 enclosure with ProVu PD6001 Feet and Inches Level meter.

Light Horn Accessory Mounted on PDA2301 Enclosure

Light/Horn showing front door open with plenty of room for wiring if other devices are needed such as an extenal power supply.

Light Horn Accessory Mounted on PDA2301 Enclosure

The ProVu with the Light/Horn is displaying the level information from the transmitter at the top of the tank.


Application Example 2:

In this example, a Helios process meter is connected to a guided wave radar level transmitter and is alternating pumps in a waste sump at a pharmaceutical company. The Light / Horn is used to indicate high and low alarm conditions.

Light Horn Accessory Mounted on PDA2301 Enclosure

The Helios is receiving the signal from the guided wave radar level transmitter and controlling the pumps.

Light Horn Accessory Mounted on Helios Process Meter

The Light/Horn on the Helios is wired to flash for high and low alarm conditions. The horn can be programmed to reset at anytime with the reset button on the front and the light can remain flashing until the level reaches it's reset point.