APG PT-300 User manual

APG
R
Doc #9004025
Part #200382
Rev B, 07/2019
PT-300 Pressure Transmitter
User Manual

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Table of Contents
Introduction ................................................................................................................ iii
Warranty and Warranty Restrictions.................................................................... iv
Chapter 1: Specications and Options..................................................................... 1
Dimensions ........................................................................................................................................1
Specications ................................................................................................................................... 2
Model Number Congurator.......................................................................................................... 3
Electrical Connection, Pinout Table, and Power Supply Table.............................................. 4
Wiring Diagrams .............................................................................................................................. 5
Chapter 2: Installation and Removal Procedures and Notes..............................6
Tools Needed..................................................................................................................................... 6
Mounting Instructions ................................................................................................................... 6
Electrical Installation ..................................................................................................................... 6
Removal Instructions ..................................................................................................................... 6
Chapter 3: Maintenance .............................................................................................7
General Care...................................................................................................................................... 7
Repair and Returns.......................................................................................................................... 7

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Introduction
Thank you for purchasing a PT-300 Pressure Transducer from APG. We appreciate your business! Please
take a few minutes to familiarize yourself with your PT-300 and this manual.
The PT-300 series oers high accuracy and reliability over a wide range of pressures. The small size,
integrated electronics, wide operating temperature ranges, and durability make PT-300 instruments perfect
for static and dynamic pressure measurements with an amplied output signal.
Reading your label
Every APG instrument comes with a label that includes the instrument’s model number, part number, serial
number, and a wiring pinout table. Please ensure that the part number and pinout table on your label
match your order.

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Warranty and Warranty Restrictions
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.

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Chapter 1: Specications and Options
• Dimensions
.530"
[13mm]
2.834"
[72mm]
ø1.500"
[ø38mm]
1.250"
[32mm]
.590"
[15mm]

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• Specications
Performance
Pressure Ranges 0 to 10K PSIS (Per Part Number)
Analog Output 4-20mA, 0-5VDC, 0-10VDC
Over Pressure 1.5X Full Scale or limit of tting, whichever is less
Burst Pressure 3.0X Full Scale or limit of tting, whichever is less
Accuracy
Linearity, Hystereses & Repeatability ±1.0% of Full Scale (BFSL)
Thermal Zero Shift [±0.036% FSO/°C (±0.02% FSO/°F)]
Thermal Span Shift [±0.036% FSO/°C (±0.02% FSO/°F)]
Environmental
Operating Temperature -17 - 70°C / 0 - 158°F
Compensated Temperature
≤ 10 psi: 0º - 60ºC / 32º - 140ºF
10 < x ≤ 1000 psi: -10º - 70ºC / 14º - 158ºF
> 1000 psi: -17º - 54ºC / 0º - 130ºF
Electrical
Supply Voltage (at sensor) 4-20 mA: 9-28 VDC
0 to 5 VDC: 9-28 VDC
0 to 10 VDC: 12.5-28 VDC
Output Signal @ 21°C 4-20 mA: 3-30 mA max.
0 to 5 VDC: 7mA max
0 to 10 VDC: 14mA max
Masterials of Construction
Wetted Materials
≤ 1000 psi: 316L Stainless Steel
> 1000 psi: 17-4 Stainless Steel
Enclosure 316L Stainless Steel
Mechanical
Process Connection 1/4 - 18 NPTF

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• Model Number Congurator
Model Number: PT-300 - _____ - _____ - _____ - _____ - _____ - _____ - _____ - _____ - _____ - _____
A B C D E F G H I J
A. Operation / Output
□L1▲ 4 - 20 mA output
□L3 0 - 5 VDC output
□L10 0 - 10 VDC output
B. Common Pressure Ranges - PSI*
□5 □50 □200 □750 □3000
□15 □60 □300 □1000 □5000
□30 □100 □500 □2000 □10000
*Other ranges available. Please consult factory.
C. Units of Measure
□psi▲□bar □kPa □kgcm2□fsw
D. Pressure Type
□A Absolute ( ≤ 200 psi)
□S▲ Sealed ( ≥ 4 psi)
□G Gauge ( ≤ 500 psi)
E. Electrical Connection
(Mating connector sold separately)
□E5▲ Pigtail with cable (specify cable length below)
□E17 6 pin bayonet (PT02E-10-6P)
F. Electrical Cable Length
□__ Number represents cable length in ft to be included
on E5 options.
(ex. E5-2 equals pigtail, 2 ft cable)
▲This option is standard
G. Process Connection
□P5▲ 1/4 - 18 NPTF
H. Accuracy
□N3▲±1.0%
□N4 ±1.0% with NIST certication
I. Materials
□M1 316L SS ( ≤ 1000 psi)
□M2 ▲17-4 SS ( > 1000 psi)
J. Temperature Compensation Range
□S0 -17º - 54ºC / 0º - 130ºF ( > 1000 psi)
□S9 0º - 60ºC / 32º - 140ºF ( ≤ 10 psi)
□S10 -10º - 70ºC / 14º - 158ºF (10 < x ≤ 1000 psi)

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Below are pin out diagrams, a pin out table, and electrical cable specications for the 4-20 mA, 0-5 VDC, and
0-10 VDC outputs, to assit you in wiring your transducer.
• Electrical Connector, Pinout Table, and Supply Power Table
PT-300 Pin Out Table
6 Pin
Bayonet
4-20 mA 0-5 VDC 0-10 VDC
A+ Excitation + Excitation + Excitation
B- Excitation + Output + Output
CN/C - Output - Output
D N/C - Excitation - Excitation
EN/C N/C N/C
F N/C N/C N/C
Pigtail
Red + Excitation + Excitation + Excitation
Grn N/C + Output + Output
Wht N/C - Output - Output
Blk - Excitation - Excitation - Excitation
N/C indicates no connection
For alternate pinouts, please consult factory
PT-300 Supply Power Table
4-20 mA 0-5 VDC 0-10 VDC
Power Supply 9-28 VDC 9-28 VDC 12.5-28 VDC
A
F
E
D
B
C
6 Pin
Bayonet
Connector

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• Wiring Digrams
This device is a 2 wire, loop powered transmitter. A voltage of between 9 and 28 VDC must be maintained at
this connection. Completion of the earth or system ground is recommended for proper circuit protection.
Power supply voltage must be sucient to maintain a minimum of 9 VDC at the transducer/transmitter
terminals after “dropping” voltage across RL (the equivalent load resistance of the circuit) at full scale current
(20 mA). Example: If RL = 250 ohm then “drop” is 0.02 Amps X 250 ohm = 5 volts. Therefore power supply
minimum is 5V + 9V = 14V.
Excitation Voltage
0-5 VDC: 9-28 VDC
0-10 VDC: 12.5-28 VDC
Typical 4-20 mA Circuit
- EXCITATION
+ EXCITATION
4-20 mA
CURRENT
LOOP
+ Vin
Process
Controller
RL
Typical 0-5 and 0-10 VDC Circuit
4-20 mA
0-5 and 0-10 VDC sensors are not as sensitive to circuit loading as 4-20 mA sensors are. As long as the power
supply voltage (Excitation voltage) does not exceed 28 VDC, the sensor will operate properly.
0-5 VDC and 0-10 VDC
E
xcitation +
Output +
Output -
Excitation -
Excitation+
Excitation-
Power
Supply
V+
V-
Meter
Excitation Voltage
4-20 mA : 9-28 VDC

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Chapter 2: Installation and Removal Procedures and Notes
• Mounting Instructions
• Check the pinout table on your PT-300 against your order.
• Check that your electrical system wiring matches the pinout table on your PT-300.
• For instruments with connectors, make the connection. Otherwise, attach your wires to the provided
terminal strip.
• Electrical Installation
Removing your PT-300 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 tting and diaphragm of any debris (see General Care) and inspect for damage.
• Store your sensor in a dry place, at a temperature between -17° and 70° C (0° - 158° F).
• Removal Instructions
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. Wrap thread tape in the opposite
direction of the threads so it does not unravel as you screw the sensor into place. Unraveling can cause
uneven distribution and seal failure. For straight threads use an o-ring.
• 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.
DANGER: Removing your PT-300 Pressure Transmitter while there is still pressure in
the line could result in injury or death.
• Wrench sized appropriately for your PT-300’s process connection.
• Thread tape or sealant compound for threaded connections.
• Tools Needed