Miniature Low Pressure Transmitter
Installation and Operation
#NSA-HH/MLP2-001-W-U-A-A-0P-C, NSA-HH/MLP2-002-W-U-A-A-0P-C, NSA-HH/MLP2-003-W-U-A-A-0P-C
NSA-HH/MLP2-004-W-U-A-A-0P-C, NSA-HH/MLP2-005-W-U-A-A-0P-C, NSA-HH/MLP2-010-W-U-A-A-0P-C
NSA-HH/MLP2-2D5-W-U-A-A-0P-C, NSA-HH/MLP2-D10-W-U-A-A-0P-C, NSA-HH/MLP2-D25-W-U-A-A-0P-C, NSA-HH/MLP2-D50-W-U-A-A-0P-C
– 11/14/2019
Specifications subject to change without notice.
Catalog No. 11-808-764-01
Page
3
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4
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
Figure 2
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. Additionally, a small piece of tubing can be connected between the HI and LO
brass fittings to neutralize any external pressure effects. Press and hold the Zero button for 5 seconds. MLP2 will enter
zero mode AFTER push button is released. The Zero adjustment should only be performed with no pressure applied.
