APG PT-405 Series Pressure Transmitters Installation Guide
- June 12, 2024
- APG
Table of Contents
PT-405 Series Pressure Transmitters
Installation Guide
Heavy Duty, Explosion Proof
PT-405 Series Pressure Transmitters
Thank You
Thanks for purchasing a Series PT-405 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, at any time, don’t hesitate to call us at
888-525-7300.
NOTE: Scan the QR code to the right to see the full user manual on your tablet or smartphone. Or visit www.apgsensors.com/support to find it on our website.
https://www.apgsensors.com/sites/default/files/manuals/PT-405-manual.pdf
Description
Series PT-405 pressure transmitters offer reliability over a wide range of pressures and in harsh industrial conditions and hazardous locations. They are certified explosion proof for hazardous areas in the US and Canada by CSA for Class 1, Division 1 environments.
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 PT-405 will look something like this:
SAMPLE: PT-405-L1-5000-PSIS-E60-5-P5-N0-M2-S2
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.
You’ll also find all hazardous certification information on the label.
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 https://www.apgsensors.com /about-us/terms-conditions. Contact Technical Support to receive a Return Material Authorization before shipping your product back. Scan the QR code below to read the full explanation of our Warranty on your tablet or smartphone.
https://www.apgsensors.com/about-us/terms-conditions
Dimensions
Total length of PT-405 depends on selected process connection
Mounting Instructions
The PT-405 should be installed in an area–indoors or outdoors–which meets the following conditions:
- Ensure that the fitting on your sensor matches the fitting on your tank/vessel/pipe/etc. If the fittings do not match, do not attempt to install the sensor. Contact the factory immediately.
- Ambient temperature between -40°F and 185°F (-40°C to 85°C)
- Relative humidity up to 100%
- Altitude up to 2000 meters (6560 feet)
- IEC-664-1 Conductive Pollution Degree 1 or 2
- IEC 61010-1 Measurement Category II
- No chemical corrosive to stainless steel (such as NH3 , SO2 , Cl2 , etc.)
- Ample space for maintenance and inspection
- Explosion proof conduit, with seal installed within 18 inches, must be used for cable connection to PT-405
- Class II power supply
Mounting your pressure transducer is easy if you follow a few simple steps:
- Never over-tighten the sensor. This can compress the diaphragm, changing how it reacts to pressure. In all cases, tighten the sensor as little as possible to create an adequate seal. On straight threads, tighten only until you feel the o-ring compress – making sure you don’t damage or extrude the o-ring.
- Always use thread tape or sealant compound on tapered threads. Straight threads use an o-ring. If using thread tape, wrap the tape in the opposite direction of the threads so it does not unravel as you screw it into place. Unraveling can cause uneven distribution and seal failure.
- Always start screwing 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.
IMPORTANT: Incorrectly connecting your PT-405 Pressure Transmitter to explosion proof conduit, or using unapproved conduit, will void the protection rating of your PT-405.
Wiring Information
PT-405 Series Pin Out Table
Pigtail
| 4-20 mA| 0.5 I 0.5-4.5 / 1-5 VDC| 0-10 VDC| RS-485
---|---|---|---|---
Red| + Excitation| + Excitation| Excitation| – Excitation
Gm| No wire| + Output| – Output| B (Tx-)
Wht| No wire| – Output| – Output| A (Tx+)
Blk| – Excitation| – Excitation| Excitation| Excitation
Gm / Ylw| Case Ground| Case Ground| Case Ground| Case Ground
N/C indicates no connection
For alternate pinouts, please consult factory
PT-405 Series Supply Power Table
| 4-20 mA| 0-5 / 0.5-4.5 / 1-5 VDC| 0-10 VDC| RS-485
---|---|---|---|---
Power Supply| 9-28 VDC| 9-28 VDC| 12.5-28 VDC| 9-28 VDC
IMPORTANT: Some Modbus manufacturers use reversed Tx+/Tx- pins. When
connecting to your system, ensure A to A and B to B connections.
DANGER: Incorrectly connecting your PT-405 Pressure Transmitter to your
control system could result in injury or death.
Zero Trimming
- Remove protective screw(s) with 5/64 allen wrench.
- Ensure that the transducer is at 0 psig or 0 psia (vacuum if absolute).
- Using a jeweler’s screwdriver or a suitable instrument, adjust the “Z” pot until you have a 4 mA, 0 V, 0.5 V, or 1 V output.
- Replace protective screw(s) when finished.
DANGER: Protective screws must be replaced using 28 oz-in of torque to
create seal.
NOTE: You may also return the transducer to the factory for repair and/or
adjustment.
IMPORTANT: Do not make changes to the Span adjustment (the “S” pot to the
right, see Figure 7.1) as part of the zero trimming. The Span should only be
changed as part of the recalibration of a gauge with a known pressure source.
Re-Calibration
This procedure requires a known pressure source of at least ±0.1% accuracy in order to fully utilize the accuracy potential of the transducer. (If not available, you can return it to the factory for recalibration.)
- Remove Unit from Hazardous Location prior to recalibration.
- Ensure that the transducer is at 0 psig or 0 psia (vacuum if absolute), and adjust zero as per instructions for zero trimming.
- Apply full scale pressure to the pressure port and adjust the Span (“S”) pot (on the right of Figure 7.1) until the full scale signal is reached.
- Re-check zero and re-adjust the zero (“Z”) pot if required
- Repeat previous two steps until no further adjustment is required.
NOTE: You may also return the transducer to the factory for repair and/or
adjustment.
IMPORTANT: Do not adjust Zero or Span potentiometer while your PT-405 is
installed in a Hazardous Location. Removing the protective screws to access
the potentiometers invalidates the Hazardous Location approvals until they are
replaced.
DANGER: Removing the pressure transmitter while there is still pressure
in the line or vessel could result in injury or death.
General Care
Your pressure transmitter is very low maintenance and will need little care, as long as it was installed correctly. However, in general, you should:
- Keep the sensor and the area around it generally clean.
- Avoid applications for which the sensor was not designed, such as extreme temperatures, contact with incompatible corrosive chemicals, or other damaging environments.
- Inspect the threads whenever you remove the sensor from duty or change its location.
- 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.
Repair Information
If your pressure transmitter needs repair, contact us via email, phone, or online chat on our website. We will issue you an RMA number with instructions.
- Phone: 888-525-7300
- Email: [email protected]
- Online chat at www.apgsensors.com
Removal Instructions
Removing your pressure transducer from service must be done with care. It’s easy to create an unsafe situation, or damage your sensor, if you are not careful to follow these guidelines:
- Make sure the pressure is completely removed from the line or vessel where your sensor is installed. Follow any and all procedures for safely isolating any media contained inside the line or vessel.
- Remove the sensor with an appropriately sized wrench (per your process connection).
- Clean the sensor’s threads of any sealant compound or tape. Inspect the threads and the diaphragm for any damage.
- Store your sensor in a dry place between -40° F and 180° F.
DANGER: Removing the pressure transmitter while there is still pressure in the line or vessel could result in injury or death.
Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone:
888-525-7300 | email:
[email protected]
Part # 200126
Doc #9005324 Rev B