AVTECH RMA-CL1-SEN User Manual

Current Loop 1 (RMA-CL1-SEN)

Installation Note

AVTECH’s Current Loop monitors the electrical current flowing through a single-phase
powered cable. It outputs a signal of 0 to 5 VDC (volts of direct current), which your built-in or
external Room Alert Analog Sensor then converts into an amp (A) reading. By pairing a Current
Loop with your Room Alert monitor, you can easily determine
the power consumption of an electrical appliance / device.

Current Loop Package Contents

• One (1) Current Loop

• Two (2) #8 x ¾" TEK mounting screws

• One (1) 25' speaker wire cable

• One (1) Installation Note (You’re reading it now.)

Select An Input Range

Your Current Loop arrives with its jumper set on the largest input amperage range: 0 to 50 A.
You may select the High, Middle or Low range to match the power draw of the appliance /
device being monitored. This is important to get the most accurate readings possible.

High (H) ......................0 to 50 A

Middle (M) ..................0 to 20 A

Low (L) .......................0 to 10 A

To change the setting, pull the jumper up to detach it from the “H” pins; then push it back down
onto the “M” or “L” pins.

Install Your Current Loop

The Current Loop has a split core which opens to wrap around a single insulated conductor
running into an electrical box or to an appliance / device.

Consult with a qualified electrician before you begin.
Disconnect power to the equipment and cable before you begin.
Do not insert an exposed wire into the Current Loop.
Do not use the Current Loop in hazardous (classified) locations or life / safety applications.

Insert A Single Insulated Conductor Into Your Current Loop

1. Disconnect power to the insulated cord that you intend to monitor.

2. Open the Current Loop by either prying open the latch with a flat-tip screw driver or

pressing down on the two side tabs with your fingers to release the cover.

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Current Loop (RMA-CL1-SEN)

3. Wrap the Current Loop around a single

insulated conductor. Examples are
shown here.

4. Before you close the Current Loop,

check the surfaces of the magnetic core
to be sure they’re clear. They need
good contact for the Current Loop to
operate correctly.

5. Lock the Current Loop closed by

pressing the cover down firmly and
listening for the click.

Connect Your Current Loop To Room Alert

Your Current Loop comes with one end of the 25' speaker wire
already attached to its + / - contacts.

Follow these steps to attach the other end of the 25' speaker
wire to the input ports on your built-in or external Room Alert
Analog Sensor:

1. Separate and strip the free ends of the speaker wire. Expose about ¼" of wire.

2. Look at the + / - contacts on the Current Loop and note which

wire is attached to each contact.

3. Insert the unattached end of the “-” speaker wire into the

RIGHT dry contact of the Analog Sensor Input port.

4. Insert the unattached end of the “+” wire into the LEFT dry

contact of the Analog Sensor Input port.

Do not connect Current Loop or Room Alert dry contacts to live circuits.
Use only low-voltage 2-wire cable to connect your Current Loop to Room Alert.

Mount Your Current Loop

Mount the base of the Current Loop on a surface using the included self-drilling mounting
screws or snap it directly on to a 35 mm DIN rail.

Leave a minimum of 1" between the Current Loop and any other magnetic device(s).

Configure Your Current Loop

Navigate to Settings Æ Sensors in the web interface of the Room Alert, and then scroll down
to “Analog Sensor Settings.”

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