APG MNU-IS Series Installation Manual

Thank You
Thanks for purchasing a MNU-IS ultrasonic Modbus sensor from us! We appreciate your business
and your trust. Please take a moment to familiarize yourself with the product and this manual
before installation. If you have any questions, at any time, don't hesitate to call us at 888-525-7300.
You can also find a full list of our product manuals at:
www.apgsensors.com/resources-user-manuals/
Table of Contents
Description Dimensions
1. 5.
How To Read Your Label Wiring Information
2. 6.
Warranty General Care
3. 7.
Physical Installation Notes Repair Information
4. 8.
& Mounting Instructions
1 Description
MNU-IS ultrasonic sensors are rugged, low-power units, rated Intrinsically Safe for hazardous
location installations. They feature APG's new QuickStart Mode for on-demand measurements and
optional Gas Discharge Tube surge protection. All MNU-IS sensors are fully programmable via RS-
485 Modbus communications, and with APG Modbus software and an RS-485-to-USB converter.
2 How To Read Your Label
Each label comes with a full model number, a part number, and a serial number. The model number
for the MNU-IS will look something like this:
SAMPLE: MNU-IS-6424-C6A
The model number correlates with all the configurable options and tells you exactly what you have.
Compare the model number to the options on the datasheet to identify your exact configuration.
You can also call us with the model, part, or the serial number and we can help you.
The label also includes the pinout, as does this installation guide.
3 Warranty
This product is covered by APG's warranty to be free from defects in material and workmanship
under normal use and service of the product for 24 months. For a full explanation of our Warranty,
please visit www.apgsensors.com/resources/warranty-certifications/warranty-returns. Contact
Technical Support to receive a Return Material Authorization before shipping your product back.
4 Physical Installation Notes & Mounting Instructions
Specific Conditions of Use
• Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of
this equipment may generate an ignition-capable level of electrostatic charge. Therefore the
equipment shall not be installed in a location where the external conditions are conducive to
the build-up of electrostatic charge on such surfaces. In addition, the equipment shall only be
cleaned with a damp cloth.
The MNU-IS should be installed in an area—indoors or outdoors—which meets the following
conditions:
• Ambient temperature between -30°C and 60°C (-22°F to +140°F) unless otherwise noted.
• No chemicals corrosive to PVDF or PBT.
• Ample space for maintenance and inspection.
The sensor is located away from strong electromagnetic fields, such as those produced by
•
motors, transformers, solenoid valves, etc.
• The sensor is not exposed to excessive vibration.
• The sensor is shielded from direct sunlight or from temperatures different than the
temperatures between the sensor and the target. This is required for temperature
compensation to work correctly.
• The equipment shall be installed in a location where the external conditions are not conducive
to the build-up of electrostatic charge on the sensor. The equipment shall only be cleaned with
a damp cloth.
IMPORTANT: Refer to section 10 for Hazardous Installation Drawing
MNU-IS Series
Intrinsically Safe Ultrasonic Modbus Sensor
Installation Guide
Removal Instructions
9.
10. Hazardous Installation
Drawing
Automation Products Group, Inc.
QuickMode Notes
11.
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone: 888-525-7300 | email: sales@apgsensors.com
5
Mounting your MNU-IS ultrasonic sensor is easy if you follow a few simple steps:
•
•
•
•
•
Dimensions
3/4" ø NPT
Threads
2" ø NPT
Threads
Housing Option 2
3/4" ø NPT
Threads
2" ø NPT
Threads
Housing Option 4
Never over-tighten the sensor.
Always screw in your sensor by hand to avoid cross-threading. Thread failure can be a problem if
you damage threads by over-tightening them or by crossing threads.
Mount your MNU-IS sensor so that it has a clear, perpendicular sound path to the surface being
monitored. Your sensor should be mounted away from tank or vessel walls and inlets. (See
Figure 4.1)
The sound path should be free from obstructions and as open as possible for the 9° off axis
beam pattern.
If you are using a stand pipe, please see our guide to stand pipes on our website:
http://www.apgsensors.com/about-us/blog/how-to-install-a-stand-pipe.
Figure 4.1
Part # 200152
Doc #9005364 Rev D
7.21"
183.13mm
5.08"
129.03mm
3.05"
77.47mm
1.47"
37.34mm
1.98"
50.29mm
5.74"
145.80mm
3.61"
91.69mm
3.05"
77.47mm