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MLP2 SERIES
Installation & Operation Instructions
PRECAUTIONS
•
Remove power before wiring. Never connect
or disconnect wiring with the power applied.
Do not allow live wires to touch the circuit
board.
•
An isolation transformer is recommended
when powering the device with 24 VAC.
•
Do not run the wiring in any conduit with line
voltage.
•
Failure to wire devices with the correct
polarity when using a shared transformer may
result in damage to any device powered by
the shared transformer.
•
Do not remove the cover. All user features are
accessible from the outside of the unit.
MEDIA
The MLP2 can be used to monitor the differential
pressure in any application that uses dry air or
inert gas.
MOUNTING INSTRUCTIONS
Using the two #8 x 3/4" self drilling mounting screws supplied by ACI, mount the unit vertically with
the brass fittings pointing towards the ground. Attach the unit to the mounting surface using the
two mounting openings located on the top and bottom flanges. This ensures that any condensation
that may form in the tubing does not have an effect on the pressure sensor. If mounting the unit
horizontally, a slight zero shift may occur and care must be taken to prevent moisture from building up
in the sensor. For best results, all tubing lengths should be limited to a maximum length of 75 feet (23
meters).
DIN RAIL MOUNTING
The MLP2 offers two options for DIN Rail mounting: rear and side mount. The rear DIN rail mount is
integrated into the enclosure. The side mount DIN adapter is included with the package. The side mount
offers a much thinner profile for higher density panels. - See Figure 2 or Figure 3 (pg. 2)
To install the side mount DIN adapter, the front cover must be removed first. The cover can be pried out
with a flat blade screw driver on the upper edge, or on the two side slots. The clip can then be slid into
position. Once the clip is inserted, snap the front cover into place.
Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone: 1-888-967-5224 | Website: workaci.com
88.9m
88.9mm m
3.500in n
3.500i
Page 1
Phone: 1-888-967-5224
Website: workaci.com
106.3mm m
106.3m
4.185in n
4.185i
57.1mm m
57.1m
2.250in n
2.250i
34.4mm m
34.4m
1.354in n
1.354i
Version: 12.0
I0000791
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Summary of Contents for aci MLP2 Series
- Page 1 MOUNTING INSTRUCTIONS Using the two #8 x 3/4” self drilling mounting screws supplied by ACI, mount the unit vertically with the brass fittings pointing towards the ground. Attach the unit to the mounting surface using the two mounting openings located on the top and bottom flanges. This ensures that any condensation that may form in the tubing does not have an effect on the pressure sensor.
- Page 2 WIRING INSTRUCTIONS Shielded cable with 14 to 24AWG conductors is recommended. Use the Wiring Connections table below to determine the proper wiring for your application. Insert the wire into the depluggable terminal block sockets and tighten the screws. In some circumstances, it may be easier to remove the terminal blocks while connecting the wires.
- Page 3 PRESSURE CONNECTIONS The recommended connection tubing is ¼” O.D. push-on tubing (1/8” – 3/16” I.D.). ACI recommends to keep the tubing runs as short as possible so as to not affect the response time. ZERO ADJUSTMENT Small positive or negative pressure offsets can be removed using the Zero push button. Make sure that there is no pressure at the HI and LO pressure fittings.
- Page 4 Polycarbonate [UL 94 V-0] Enclosure Material [Flame Rating]: WARRANTY The ACI MLP2 sensors are covered by ACI’s Five (5) Year Limited Warranty, which is located in the front of ACI’S SENSORS & TRANSMITTERS CATALOG or can be found on ACI’s website: www.workaci.com.