IFM PN7032 Pressure Sensor with Display

Full Model No.: PN-100-SER14-QFRKG/US/ /V

PN7032 belongs to PN70xx series, a relative pressure sensor with digital display, two switching outputs and IO-Link on one channel. It adopts ceramic-capacitive measuring cell, widely used for pressure switches and transmitters in industrial hydraulic and pneumatic systems.

✅ Key Specifications

✅ Model Code Explanation

PN-100-SER14-QFRKG/US/ /V

PN: Series with display

100: Measuring range 0~10 MPa

S: 2 switching outputs

E: IO-Link function

R: G1/4 internal thread

14: M12 5-pin electrical connector

QFRKG: Code for housing, sealing and electrical configuration

✅ Product Features

1. IO-Link communication: Read real-time pressure, temperature and diagnostic data; remote parameter read/write via PLC, device identification and fault diagnosis supported.
2. Rotatable display head for convenient viewing after installation.
3. Red/green color-changing display: green within valid pressure range, red when threshold exceeded.
4. Ceramic cell, good resistance to pressure spikes and excellent long-term stability.
5. Two independent switch points for high/low pressure dual alarm.
6. Built-in short-circuit and reverse polarity protection, suitable for harsh industrial environments.

✅ Typical Applications

Hydraulic station pressure monitoring, lube oil circuits, cooling water systems, high-pressure pneumatic loops, injection molding machines, machine tools, pump stations, air compressors.

✅ Reference Replacement Models

PN7032 (0~10MPa, G1/4 internal thread, IO-Link)

PN7033: 0~2.5MPa

PN7034: 0~1MPa

PN7036: 0~0.25MPa

Note: PN7032 is partially phased out. For new projects, consult IFM PN72 series alternatives. Thread, measuring range, IO-Link and output logic need to be verified.

✅ Pin Assignment (M12 5-pin A-coded)

1: Power +18~30V DC

2: OUT1 (PNP switch)

3: Power GND

4: OUT2 / IO-Link

5: Not used

✅ Common Troubleshooting

1. No display: Check supply voltage and confirm no reverse connection.
2. Pressure reading drift: Verify medium temperature and pressure spikes upstream; ceramic cell is vulnerable to continuous overpressure.
3. IO-Link communication failure: Check pin 4, IO-Link master baud rate and matched IODD file.
4. Switch output not actuating: Enter menu to verify SP/rP setting and output mode (window / hysteresis).

Comparison Table: IFM PN7032 vs PN72 Series (PN7292, Direct Replacement)

PN7032: PN-100-SER14-QFRKG/US/ /V (discontinued)

PN7292: PN-100-REN14-QFRKG/US/ /V (official recommended replacement, 0~10MPa, G1/4 internal thread, 2×PNP + IO-Link)

PN72 Series Selection List for PN70xx Equivalents

⚠️ Replacement Engineering Notes

1. Mechanical Installation: Thread and physical dimensions are identical; can be directly screwed into existing piping.
2. Electrical Wiring: M12 5-pin pinout fully identical, no cable modification needed.
3. Switch-only Application (No IO-Link): Direct replacement, re-set SP/rP parameters only; PLC program unchanged.
4. IO-Link Application: IODD file update mandatory. PN7032 and PN7292 IODD are not interchangeable; different device ID, PLC will recognize it as new equipment.
5. Output Type: PN7032 fixed PNP; PN7292 factory default PNP, can be switched to NPN via menu.
6. Pressure Units: PN72 supports more units (bar/MPa/psi etc.), older PN7032 has fewer unit options.
7. Media Note: Ceramic cell, avoid strongly corrosive media; high-pressure gas applications require separate evaluation.

Limitation Statement

PN72 series (PN7292) is functionally compatible replacement instead of 100% firmware identical. Diagnostic parameters and device ID read via IO-Link differ. For pure switch signals, zero-modification replacement; IO-Link projects require PLC IODD update and parameter download.

Complete Installation Instructions for IFM PN7032 Pressure Sensor

PN7032: G1/4 internal thread, M12 A-coded 5-pin, ceramic cell, gauge pressure 0~10MPa; Depressurize system and cut off power before installation

1. Pre-installation Preparation
2. Safety Check

Shut down and depressurize piping; confirm medium, temperature and maximum pressure do not exceed PN7032 specification (medium -25~80℃, overpressure 30MPa).

2. Pressure Tap Selection

Liquid medium: Tap taken from side of pipe to prevent air bubbles accumulating on measuring cell.

Gas medium: Tap taken from top of pipe to avoid liquid pooling on cell.

Avoid locations after pumps, valves and elbows with pressure spikes and high turbulence. Add snubber/damper under heavy vibration to protect ceramic cell.

3. Piping Pre-treatment

Purge piping to remove metal chips and weld slag; debris can scratch ceramic diaphragm and cause zero drift.

4. Sealing Parts Preparation

G1/4 is parallel pipe thread. Do NOT wrap large amount of PTFE tape. Copper gasket or O-ring is preferred. A small amount of thread sealant is allowed, but sealant must not squeeze into pressure chamber, which will permanently damage the cell.

5. Tools: Torque wrench, M12 pre-assembled cable, spanner.
6. Mechanical Mounting (Pressure Piping Connection)
7. Align sensor G1/4 thread with pipe fitting, hand-tighten first. Do NOT use spanner on plastic display housing directly.
8. Recommended tightening torque: 25~35 N·m. Must use torque wrench. Excessive torque causes housing deformation and ceramic cell cracking; insufficient torque causes leakage.
9. Display Head Rotation: After tightening thread, the electronic display head can be rotated 345° for optimal viewing angle. Do not rotate beyond mechanical end stop, forced rotation damages internal wiring.

⚠️ Note: Rotate the upper display head, NOT the pressure thread base.

4. After installation, pressurize slowly and check thread for leakage.
5. Electrical Wiring (M12 A-coded 5-pin)

Perform wiring with power OFF. IFM original M12 prefabricated cable recommended. M12 connector tightening torque: 0.6~1.2 Nm to maintain IP67.

Output: 2×PNP, max load current 250mA per channel.

IO-Link usage: Pin 4 for IO-Link communication.

Cable recommendation: 0.34~0.5mm². Route IO-Link wiring away from frequency converters and high-power power cables to reduce interference.

4. Power-up & Commissioning
5. Double-check wiring for correctness and short circuit; fasten M12 connector.
6. Apply DC24V power slowly, display lights up.
7. Menu configuration: Set switch point SP, reset point rP, select window / hysteresis mode and pressure unit.
8. Zero point verification: Confirm reading near 0 bar when piping is depressurized.
9. Pressurize gradually, verify pressure reading and switch output actuation.
10. IO-Link application: Import IODD file in PLC, identify device, read pressure, temperature and diagnostic parameters.
11. Critical Installation Prohibitions (Engineering Key Points)
12. ❌ Do NOT mount or demount sensor under pressure; high-pressure ejection may injure personnel and damage equipment.
13. ❌ Do NOT use spanner on plastic display housing to tighten thread; only clamp lower metal thread base.
14. ❌ Heavy PTFE tape on G1/4 thread; debris entering pressure chamber scratches ceramic cell.
15. ❌ Over-tightening torque, may fracture ceramic measuring element.
16. ❌ Direct medium impact above 80℃; add cooling buffer for high-temperature media.
17. ❌ Operation under heavy shock and continuous vibration without snubber, leading to zero drift and shortened service life.
18. ❌ Hot plug/unplug M12 connector, risk of burning output circuit.
19. Post-installation Check List

No leakage at thread connection

M12 connector tightened, IP67 intact

Supply voltage: 18~30V DC

No short circuit or reverse polarity

Zero reading normal with no applied pressure

Switch point action normal / IO-Link communication stable

7. Replacement Hint for PN7292

Mechanical mounting, thread, torque and M12 pinout are fully identical; piping and cables remain unchanged. Only IO-Link projects require IODD file update.