Avtech RMA-CL1-SEN User manual

Installation Note
Temperature & Environment Monitoring... Made Easy!
Current Loop 1 & 2
AVTECH
AVTECH’s Current Loop monitors the electrical current owing through a single-phase
powered cable. It outputs a signal of 0 to 5 VDC, which your built-in or external Room Alert
Analog Sensor then converts into an amperage (A) reading. By
pairing a Current Loop with your Room Alert, you can easily
determine the power consumption of an electrical appliance,
device or facility.
Current Loop Package Contents
• One (1) Current Loop
• Two (2) #8 x ¾" TEK mounting screws
• One (1) 25' speaker wire
Select An Input Range
Your Current Loop arrives with its jumper set on the largest input amperage range: 0 to 50 A
on Current Loop 1, and 0 to 250 A on Current Loop 2. Select the High, Middle or Low range
to match the power draw of the appliance / device being monitored for the most accurate
readings.
Current Loop 1 Current Loop 2
High (H) ............. 0 to 50 A
Middle (M) .......... 0 to 20 A
Low (L) .............. 0 to 10 A
H=0-50A
M=0-20A
L=0-10A
0-5 VDC
+
COM
—
H M L
Use Insulated Conductors Only
High (H) ..............0 to 250 A
Middle (M) ...........0 to 200 A
Low (L) ...............0 to 100 A
H=0-250A
M=0-200A
L=0-100A
0-5 VDC
+
COM
—
H M L
Use Insulated Conductors Only
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
Do not use this sensor in hazardous (classied) locations or life safety applications.
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 qualied electrician before you begin.
Disconnect power to the equipment and cable before you begin.
Do not insert an exposed wire into the Current Loop.
Step 1: Mount your Current Loop.
Mount the base of the Current Loop on a surface using the included self-drilling mounting

Page 2
Current Loop 1 & 2 (RMA-CL1-SEN & RMA-CL2-SEN)
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).
Step 2: 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 at-tip screw driver
or pressing down on the two side tabs
with your ngers to release the cover.
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 rmly and listening for the
click.
Step 3: Connect your Current Loop to Room Alert.
Do not connect the analog inputs on AVTECH products to live circuits of over 5 VDC.
Use only low-voltage 2-wire cable to connect analog inputs.
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 negative (-) wire into the RIGHT (-) contact of the
Analog Sensor Input port.
4. Insert the positive (+) wire into the LEFT (+) contact of the Analog Sensor Input port.

Page 3
Current Loop 1 & 2 (RMA-CL1-SEN & RMA-CL2-SEN)
Early versions of the Room Alert 12E have this polarity reversed: LEFT = negative (-),
and RIGHT = positive (+). If you observe your voltage value ipping back and forth
from “0” to “5,” it’s likely that the speaker wires simply need to be inserted in the
opposite contact.
Room Alert models 32E and 12E have built-in analog input ports; Room Alert models 32E,
24E, 12E, 4E & 3E can also interface with analog sensors through AVTECH’s Temperature
& Analog Sensor, which connects to Room Alert’s Digital Port. For more information
about AVTECH’s Temperature & Analog Sensor, please see its Installation Note, visit
AVTECH.com or contact a Product Specialist.
Sensor Features & Specications
Environment Condition Monitored Electrical current (amps)
Type Of Sensor Analog
Power Supply Induced from monitored conductor
Sensor Cable Type Low-voltage 2-wire speaker cable
Included Yes
Length 25'
Maximum Extendible Length 100'
Output Voltage 0 to 5 VDC
Input Amperage Range
Current Loop 1 (RMA-CL1-SEN) 0 to 50 A
Current Loop 2 (RMA-CL2-SEN) 0 to 250 A
Accuracy +/- 1.0% (2 to 100% FSO)
Response Time < 100 mS
Operating Frequency Range 50 to 600 Hz
Isolation Voltage 2,200 VAC
Maximum Sensing Current Voltage 600 VAC
Apeture (Hole) Size 0.75" (Accepts cables up to 350 MCM)
DIN Rail Size 35 mm
Operating Temperature -15 to 40º C (5 to 104º F)
Operating Humdity 0 to 95% RH, non-condensing
Enclosure Rating UL94-5VB
Compatible Products
Room Alert 32E/W & 12E
Through the built-in Analog Input Port(s),
Room Alert 32E/W, 24E, 12E, 4E & 3E
With a Temperature & Analog Sensor
AVT-171211-3.1.0

Page 4
Congure Your Analog Sensor
Congure Your Analog Sensor
Use Room Alert’s Built-In Web Interface
Navigate to Settings Sensors in the web interface of your Room Alert. The options
you see below will vary depending on the model.
If you connected your sensor directly
to your Room Alert 32E or 12E via its
built-in analog port:
If you connected your sensor to your
Room Alert via a Temperature & Analog
Sensor:
1. Scroll to Analog Sensor Settings. 1. Scroll to your external digital sensor(s)
and nd the digital sensor you connected
your Temperature & Analog Sensor to.
2. Enable the sensor by selecting
Enabled next to the High/Low/
Adjust elds. The built-in analog
sensor will not appear in the Room
Alert web interface, Device ManageR,
your RoomAlert.com account or SNMP
program unless it is enabled.
2. Select Temp/Analog from the Sensor
Type drop-down menu. The analog
sensor elds will then appear.
3. Then, congure the Reference/Scale and Units elds, shown below at their defaults, to
calculate your analog sensor’s output signal to scale.
• Click Enable to turn on the Reference, Scale and Units elds.

Page 5
Congure Your Analog Sensor
• In Reference, enter the highest and lowest points of the analog sensor’s output
signal range. (See Reference/Scale/Unit Settings For AVTECH Analog Sensors in this
document for the correct settings.)
• In Scale, enter the highest and lowest points of your analog sensor’s scale. (See
Reference/Scale/Unit Settings For AVTECH Analog Sensors in this document for the
correct settings.)
• In Units, enter a 1 to 3-character label for the unit type that your readings will be
measured in—“A” or “Amp” for amperage or “F” for Fahrenheit, for example. Note
that this eld is merely a label and does not aect any of the calculations.
4. Next, ll in the High/Low threshold elds, shown below at their defaults.
• In Sensor Label, you may leave the default, “Analog Sensor X,” or enter something
more descriptive of up to 15 characters. You may use the following characters in
sensor labels: letters, numbers, spaces, hyphens (-), underscores (_) and periods
(.).
• In High and Low, you may leave the default, 0—which means no alarm is
congured—or enter values for high and low thresholds. These values must be
within the range you entered in Scale, and cannot contain decimal points. Your
Room Alert generates alerts based on these thresholds.
• In Adjust, you may leave the default, 0, or enter a value to adjust the analog
reading if it diers from a known value at that location.
• In Use Alarm Prole, which controls light towers and relays on your Room Alert, you
may leave the default, Prole 1, or choose another prole from the drop-down
menu.
4. Select Save Settings at the top or bottom of the page. Your Room Alert will
automatically reboot and commit your changes

Page 6
Congure Your Analog Sensor
Reference/Scale/Unit Settings For AVTECH Analog Sensors
AVTECH’s Current Loops
Current Loop 1 Current Loop 2
High Low High Low
Reference 5 0 Reference 5 0
Scale Scale
With the jumper on With the jumper on
High (0 to 50 A) 50 0 High (0 to 250 A) 250 0
Middle (0 to 20 A) 20 0 Middle (0 to 200 A) 200 0
Low (0 to 10 A) 10 0 Low (0 to 100 A) 100 0
Units A (or Amp) Units A (or Amp)
AVTECH’s Standard Extreme Temperature Sensors
The values below apply to our standard Extreme Temperature Sensors. If you ordered
a customized version, please use your custom Reference and Scale instead of these
values.
Standard Extreme Low Temperature Sensor
Conversion To Fahrenheit Conversion To Celsius
High Low High Low
Reference 5 1 Reference 5 1
Scale 32 -328 Scale 0 -200
Units FUnits C
Standard Extreme High Temperature Sensor
Conversion To Fahrenheit Conversion To Celsius
High Low High Low
Reference 5 1 Reference 5 1
Scale 743 -40 Scale 395 -40
Units FUnits C
AVTECH’s Analog Rescaling Module (ARM)
High Low
Reference 5 1
Scale* See note
below.
Units*
*Scale and Units depend on the output of the analog sensor you’ve connected to ARM.
AVT-171211-1.2.0
www.serverroomenvironments.co.uk