APG PT-400 Installation Guide
APG
Thank You
Thanks for purchasing a PT-400 series 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 nd it on our website.
Table of Contents
PT-400 Series Pressure Transmitters
Installation Guide
For The PT-400
1.Description
2. How To Read Your Label
3. Warranty
4. Dimensions
Description
1
5. Mounting Instructions
6. Wiring Information
7. Zero Trimming
8. Re-calibration
9. General Care
10. Repair Information
11. Disassembly Instructions
12. Hazardous Location Wiring
The PT-400 series pressure transmitter oers reliability over a wide range of pressures and in
harsh industrial conditions and hazardous locations. It is certied intrinsically safe for hazardous
areas in the US, Canada, Europe and internationally by CSA, ATEX, and IECEx for Class 1, Zone 0
environments.
How To Read Your Label
2
Each label comes with a full model number, a part number, and a serial number. The model
number for the PT-400 will look something like this:
SAMPLE: PT-400-L1-100-PSI-G-E5-5-P5-N0-M1-S0
The model number correlates with all the congurable options and tells you exactly what you have.
Compare the model number to the options on the datasheet to identify your exact conguration.
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 nd all hazardous certication information on the label.
R
Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
www.apgsensors.com | phone: 888-525-7300 | email: sales@apgsensors.com
Mounting Instructions
5
Part # 122950-0001
Doc #9004026 Rev C
The PT-400 should be installed in an area--indoors or outdoors--which meets the following
conditions:
• 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
• 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.
Warranty
3
This product is covered by APG’s waranty 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
recieve 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.
Dimensions
4
Pigtail
DIN Connector
with L Bracket*
4 or 6 pin
Bayonet
Connector on
Extended Can
4 or 6 pin
Bayonet
Connector
Wiring Information
6
PT-400 Series Pin Out Table
A
F
E
A
B
1 2
+
3
B
D
6 Pin
C
Bayonet
D
C
4 Pin
Bayonet
4
DIN
4 Pin
3
4
1
2
4 Pin
M12
Cable
4-20 mA 0-5 / 0.5-4.5 / 1-5 VDC 0-10 VDC RS-485
A + Excitation + Excitation + Excitation + Excitation
B - Excitation + Output + Output - Excitation
C N/C - Output - Output N/C
D N/C - Excitation - Excitation B (Tx-)
E N/C N/C N/C A (Tx+)
F N/C N/C N/C Case GND
A + Excitation + Excitation + Excitation N/A
B - Excitation + Output + Output N/A
C N/C - Output - Output N/A
D N/C - Excitation - Excitation N/A
1 + Excitation + Excitation + Excitation + Excitation
2 - Excitation + Output + Output A (Tx+)
3 N/C - Output - Output B (Tx-)
4 Case GND - Excitation - Excitation - Excitation
1 + Excitation + Excitation + Excitation + Excitation
2 - Excitation + Output + Output A (Tx+)
3 N/C - Output - Output - Excitation
4 N/C - Excitation - Excitation B (Tx-)
Red + Excitation + Excitation + Excitation + Excitation
Grn N/C + Output + Output B (Tx-)
Wht N/C - Output - Output A (Tx+)
Blk - Excitation - Excitation - Excitation - Excitation
Shld Gnd Gnd Gnd
5.80
147.32
Automation Products Group, Inc.
Model #:
Part #:
Serial #:
Made in USA
1.50
38.10
Output:
Range:
Wiring:
Pin A:
Pin B:
Pin E:
Pin F: N/C
1025 West 1700 N
Logan, Utah USA
888.525.7300
+ Exc
- Exc
N/CPin C:
N/CPin D:
N/C
N/C indicates no connection
For alternate pinouts, please consult factory
1025 W 1700 N
Logan, Utah USA
Made in USA
1.50
38.10
Output:
Range:
Wiring
Pin A: +Ex
Pin B: -Ex
Pin C: N/C
Pin D: N/C
Pin E: N/C
Pin F: N/C
888.525.7300
1025 W 1700 N
Logan, Utah USA
Made in USA
1.50
38.10
Output:
Range:
Wiring
Pin A: +Ex
Pin B: -Ex
Pin C: N/C
Pin D: N/C
Pin E: N/C
Pin F: N/C
888.525.7300
Date:
Due:
Mfg:
3.50
88.90
Automation Products Group, Inc.
Model #:
Part #:
Serial #:
Date:
Due:
Mfg:
PT-400 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: Refer to section 12 for Hazardous Location Wiring.
IMPORTANT: PT-400 Modbus sensors use reversed Tx+/Tx- pins. When connecting to your
system, ensure continuity of Tx- to Tx- and Tx+ to Tx+, rather than A to A and B to B.
Automation Products Group, Inc.
Model #:
Part #:
1025 W 1700 N
Logan, Utah USA
888.525.7300
=
Automation Products Group, Inc.
Model #:
Part #:
Made in USA
1.50
38.10
Output:
Range:
Wiring
Pin A: +Ex
Pin B: -Ex
Pin C: N/C
Pin D: N/C
Pin E: N/C
Pin F: N/C
4.45
Serial #:
113.03
Date:
Due:
Mfg:
4.50
=
114.30
Serial #:
Date:
Due:
Mfg:
* Total length of PT-400 with DIN Connector and L Bracket
is equal to total length of PT-400 with Pigtail.
Zero Trimming
7
General Care
9
• Remove the protective screw.
• Ensure that the transducer is at 0 psig or 0 psia (vacuum if absolute). For compound ranges,
i.e. -15 psi to 30 psi, the 4 mA, 0 V, 0.5 V, or 1V set point is also at vacuum.
• 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.
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
8
Zero & Span
Adjustment
Figure 7.1
Your pressure transmitter is very low maintenance and will need little care. As long as it was
installed correctly, it will need very little care and maintenance. 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
10
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: sales@apgsensors.com
• Online chat at www.apgsensors.com
Removal Instructions
11
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 re-
calibration.)
• 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.
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.
Hazardous Location Wiring
12
Intrinsically Safe Wiring (4-20mA Output) Non-Incendive Wiring (4-20mA Output)
Non-Incendive Wiring (0-5 VDC Output) [includes 0.5-4.5 VDC and 1-5 VDC] Non-Incendive Wiring (0-10 VDC Output)
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