APG PT-503 Series Installation Manual

Thank You
Thanks for purchasing a PT-503 Series Submersible Pressure Transmitter 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, don't hesitate to call us at 888-525-7300.
You can find a full list of our product manuals at:
www.apgsensors.com/resources/product-resources/user-manuals
Table of Contents

1. Description

4. General Care

2. How To Read Your Label

5. Dimensions

3. Warranty and Return

6. Mounting Instructions

Information
Description
1
The PT-503 Series Submersible Pressure Sensor brings precision level measurement to harsh
chemical environments. Engineered with advanced materials, the PT-503 can be used in many
places that stainless steel and PVC can't go. With user-friendly analog output options and the ability
to submerge it up to 69 feet (21 meters) underwater (30 psig), the PT-503 simplifies the process of
obtaining dependable level measurements in challenging chemical environments.
How To Read Your Etched Label
2
Each sensor comes with a label etched in the bodycwith a full model number, a part number, and a
serial number. The model number for the PT-503 will look something like this:
SAMPLE: PT-503-7.5-PSI-G-L1-30-N12
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.

Warranty and Return Information

3
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,
https://www.apgsensors.com/resources/warranty-certifications/warranty-returns/.
please visit
Contact Technical Support to receive a Return Material Authorization (RMA) before shipping your
product back.
If your pressure transmitter needs to be returned for evaluation, contact us via email, phone, or on-
line chat on our website. We will issue you an RMA number with instructions.
Phone: 888-525-7300
•
Email: sales@apgsensors.com
•
• Online chat at www.apgsensors.com
Please have your PT-503's part number and serial number available.
General Care
4
Your pressure transmitter is very low maintenance and will need little care, as long as it was installed
correctly. However, in general, you should:
Avoid applications for which the sensor was not designed, such as extreme temperatures,
•
contact with incompatible corrosive chemicals, or other damaging environments.
• Avoid touching the diaphragm. Contact with the diaphragm, especially with a tool, could
permanently shift the output and ruin accuracy.
Cleaning the diaphragm or the diaphragm bore should be done with extreme care. If using a
•
tool is required, make sure it does not touch the diaphragm.
IMPORTANT: Any contact with the diaphragm can permanently damage the sensor. Use
extreme caution.
PT-503 SERIES
SUBMERSIBLE PRESSURE TRANSMITTER
4-20 mA, 0.5 – 4.5 VDC
Installation Guide

7. Vent Tube Drying

8. Wiring Information
Automation Products Group, Inc.
9. Removal Instructions
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone: 888-525-7300 | email: sales@apgsensors.com
5
6
The PT-503 should be installed in an area—indoors or outdoors—which meets the following
conditions:
•
•
•
•
•
•
Your PT-503 Series Submersible Pressure Transmitter is designed to be free-hanging. It can safely lay
on the bottom of the tank or pool. If your tank contains sediment, it is recommended to suspend the
PT-503 just above the sediment layer.
Common installation methods include mounting a cable clamp or grip at the top of a tank to
prevent the cord from falling into the tank.
7
Condensation in the vent tube can damage the electronics in your sensor, resulting in unreliable
readings. APG offers two methods of preventing vent tube condensation: a venting cap, and a
desiccant drying cartridge. By default, the PT-503 comes with a venting cap pre-installed.
The venting cap is a PVC tube with a hydrophobic patch that allows moisture to pass out of the tube
without allowing water in. The cap is sealed by an o-ring, and is easily installed in the field.
The desiccant drying cartridge with vent tube adapter absorbs any moisture in the vent tube to
keep vapor from condensing. The installation of the desiccant drying cartridge is quick and easy.
Common installation methods are cable tie, Velcro, and cable clamps.
NOTE: Desiccant crystals change from blue to pink as they become saturated. Cartridge must
be replaced when all crystals have saturated.
IMPORTANT: Do NOT use desiccant cartridge in the presence of vapors of liquids containing
phosphate esters, synthetic lubricant, hydrocarbon solvents, methanol, acetone, lacquer
solvents, or other organics.
Dimensions
"
(96.01 mm)
PT-503
Mounting Instructions
Ambient temperature between 0°F and 158°F (-18°C to 70°C)
Relative humidity up to 100%
IEC-664-1 Conductive Pollution Degree 1 or 2
IEC 61010-1 Measurement Category II
Ample space for maintenance and inspection
Class II power supply
Vent Tube Drying
Part # 201052
Doc #9005951 Rev A
"
(31.12 mm)