Product Description

The IFM PN7094 is a high-precision digital pressure sensor designed for industrial applications requiring accurate monitoring of relative pressure and vacuum conditions. It features a ceramic-capacitive pressure measuring cell, ensuring long-term stability and reliability. The sensor offers a wide measuring range from -1 to 10 bar (-14.5 to 145 psi), making it suitable for various media, including liquids and gases. Equipped with two configurable digital outputs (PNP/NPN), it allows for flexible integration into control systems. The sensor's robust stainless steel housing (316L) and IP65/IP67 protection class ensure durability in harsh environments. Additionally, the PN7094 supports IO-Link communication (COM2), enabling advanced diagnostics and parameterization

Technical Specifications

• Measuring Range: -1...10 bar (-14.5...145 psi)
• Pressure Type: Relative pressure; vacuum
• Process Connection: G 1/4 internal thread
• Measuring Element: Ceramic-capacitive pressure measuring cell
• Medium Compatibility: Liquids and gases
• Medium Temperature: -25...80°C
• Min. Bursting Pressure: 150 bar (2175 psi)
• Pressure Rating: 75 bar (1087 psi)
• Vacuum Resistance: -1000 mbar
• Operating Voltage: 18...30 V DC (SELV/PELV)
• Current Consumption: < 35 mA
• Insulation Resistance: > 100 MΩ (500 V DC)
• Protection Class: III
• Reverse Polarity Protection: Yes
• Power-On Delay Time: < 0.3 s
• Integrated Watchdog: Yes
• Outputs:
• Number of Outputs: 2
• Output Signal: Switching signal; IO-Link (configurable)
• Electrical Design: PNP/NPN
• Output Function: Normally open / normally closed (parameterizable)
• Max. Voltage Drop (DC): 2.5 V
• Permanent Current Rating (DC): 150 mA; 200 mA (up to 60°C); 250 mA (up to 40°C)
• Switching Frequency (DC): < 170 Hz
• Short-Circuit Protection: Yes (pulsed)
• Overload Protection: Yes
• Measuring/Setting Range:
• Factory Setting: CMPT = 2
• Set Point (SP): -0.9...10 bar (-13.5...145 psi)
• Reset Point (rP): -0.95...9.95 bar (-14...144.5 psi)
• Min. Difference Between SP and rP: 0.05 bar (1 psi)
• In Steps Of: 0.05 bar (0.5 psi)
• Accuracy / Deviations:
• Switch Point Accuracy: < ±0.5% of the span
• Repeatability: < ±0.1% of the span (with temperature fluctuations < 10 K)
• Characteristics Deviation: < ±0.25% (BFSL); < ±0.5% (LS)
• Hysteresis Deviation: < ±0.25%
• Long-Term Stability: < ±0.05% per 6 months
• Temperature Coefficient (Zero Point): < ±0.2% of the span / 10 K (0...80°C)
• Temperature Coefficient (Span): < ±0.2% of the span / 10 K (0...80°C)
• Response Times:
• Response Time: < 3 ms
• Delay Time (Programmable): 0...50 s
• Software / Programming:
• Parameter Setting Options: Hysteresis / window; normally open / normally closed; switching logic; switch-on/switch-off delay; damping; display unit
• Interfaces:
• Communication Interface: IO-Link
• Transmission Type: COM2 (38.4 kBaud)
• IO-Link Revision: 1.1
• SDCI Standard: IEC 61131-9
• SIO Mode: Yes
• Required Master Port Type: A (when pin 2 not connected: B)
• Supported Device IDs:
• Factory Setting / CMPT = 2: 403
• PN7004: 311
• Status_B High Resolution / CMPT = 3: 601
• Profiles:
• Smart Sensor: Process Data Variable; Device Identification, Device Diagnosis
• Status_B High Resolution / CMPT = 3: Smart Sensor ED2: Digital Measuring Sensor (0x000A), Identification and Diagnosis (0x4000)
• Min. Process Cycle Time: 2.3 ms (Factory Setting / CMPT = 2); 3 ms (Status_B High Resolution / CMPT = 3)
• IO-Link Resolution (Pressure): 0.01 bar (0.001 MPa)