IFM PI1695 PI-004-REA01-E-ZVG/US/ /P Product Description

Overview

IFM PI1695 PI-004-REA01-E-ZVG/US/ /P is an ifm electronic hygienic flush-mount pressure sensor with display, designed for combined level measurement and point-level detection in food, beverage, process and hygienic liquid or gas applications. The sensor uses a relative pressure measuring range of -1 to 4 bar and provides one analog current output for continuous pressure or level signal transmission. The official ifm record lists the PI1695 as an article to be discontinued, with alternative article PI1805; replacement should verify process connection, measuring range, output and cleaning compatibility before switching.

Features

The PI1695 combines pressure or level measurement with on-site indication through a 4-digit alphanumeric LED display and status LEDs. The housing can rotate freely by 350 degrees for installation and display orientation. The sensor is designed for flush mounting in containers, tanks and pipes with no dead space. It is suited to viscous media and liquids with suspended particles, as well as liquids and gases, and resists high-pressure cleaning with aggressive cleaning agents in high-temperature process technology.

The process connection is a G1 external thread with sealing cone. Wetted parts use ceramic 99.9 percent Al2O3 and stainless steel 1.4435 / 316L with surface characteristic Ra below 0.4 micrometer / Rz 4 micrometer, plus PTFE. Housing materials include stainless steel 1.4404 / 316L, PC, PBT, PEI, FKM and PTFE. The sensor is rated IP67 and IP69K, with protection class III and reverse polarity protection.

Electrical connection is one M12 connector, A-coded, 4 contacts, gold-plated. Operating voltage is 20 to 32 V DC. Power-on delay is 0.5 s, switch-on peak current is 6 mA for 30 ms, and the integrated watchdog is provided. The analog output is one current output, 4 to 20 mA, invertible and scalable 1:4, with maximum load 300 ohm and overload protection.

Specs

Brand: IFM ELECTRONIC, ifm efector Product: Flush pressure sensor with display Order number: PI1695Model code: PI-004-REA01-E-ZVG/US/ /PApplication: Hygienic food and beverage process; flush tank, vessel and pipe mounting Pressure type: Relative pressure Measuring range: -1 to 4 bar, -14.5 to 58 psi, -100 to 400 kPaAnalog start point: -1 to 3 bar, -14.5 to 43.5 psi, -100 to 300 kPaAnalog end point: 0 to 4 bar, 0 to 58 psi, 0 to 400 kPaAnalog output: One current output, 4 to 20 mA, invertible, scalable 1:4Maximum load: 300 ohmOutput signal: Analog signal Operating voltage: 20 to 32 V DCPower-on delay: 0.5 sSwitch-on peak current: 6 mA, 30 msProtection class: IIIReverse polarity protection: Yes Watchdog: Integrated Process connection: G1 external thread, sealing cone Medium temperature: -25 to 125 degrees Celsius; maximum 145 degrees Celsius for 1 hourAmbient temperature: -25 to 80 degrees CelsiusStorage temperature: -40 to 100 degrees CelsiusProtection: IP67, IP69KMinimum burst pressure: 100 bar, 1450 psi, 10000 kPaPressure rating: 30 bar, 435 psi, 3000 kPaNo dead space: Yes Housing rotation: 350 degrees freely rotatable housing Display: 4-digit alphanumeric LED; display units bar, psi, kPa or percent of span Connector: 1 x M12, A-coded, 4 gold-plated contacts Housing: Tubular, Ø 34 mm, length 119 mmWeight: 440.6 gRepeatability: Below ±0.1 percent of span under specified conditions Characteristic deviation: Below ±0.2 percent of span at turndown 1:1 Linearity deviation: Below ±0.15 percent of spanHysteresis deviation: Below ±0.15 percent of spanLong-term stability: Below ±0.1 percent of span per yearDamping for analog output: 0.1 to 100 sMaximum analog response time: 40 msMinimum pressure cycles: 100 millionMTTF: 238 yearsProduct status: Discontinued per ifm; alternative PI1805

Principle

The PI1695 measures relative pressure through a flush ceramic or stainless pressure-contacting sensor element exposed to the medium in the tank, vessel or pipe. The measured pressure is converted into an electrical signal and processed by the sensor electronics. The measured value appears on the local 4-digit alphanumeric display in bar, psi, kPa or percent of span. The sensor provides a 4 to 20 mA analog signal proportional to pressure or level, with start point, end point, inversion and scaling configurable according to installation requirements.

Because the sensor has no dead space and a flush hygienic process connection, it is used where product residue, cleanability and resistance to high-pressure cleaning are required. The M12 connection supplies DC power and transmits the analog signal to a PLC, transmitter input, recorder, display instrument or process control system. Installation should verify the G1 thread and adapter compatibility, gasket or seal material, medium compatibility, cleaning temperature, pressure rating, cable connection, grounding and signal loop load.

For replacement of an existing PI1695, the original measuring range, output configuration, process connection, mounting orientation, display units, damping and zero or span settings should be transferred from the original system or recorded before removal. Since the PI1695 is discontinued, the suggested PI1805 alternative must be checked for matching technical data, hygienic approval, process connection and electrical connection.

Applications

IFM PI1695 PI-004-REA01-E-ZVG/US/ /P is used in food and beverage, dairy, brewing, pharmaceutical-adjacent hygienic processing, cosmetics, process tanks, mixing vessels, pipelines, cleanable machinery, CIP-related equipment, viscous liquid monitoring, liquid or gas pressure monitoring and point-level detection. Typical uses include tank level indication, vessel pressure monitoring, pump or pipe pressure control, filtration pressure, hygienic machine washdown installations and existing process equipment where a flush, display-equipped pressure transmitter is required. In legacy systems, it serves as a direct replacement pressure or level sensor spare when the range, process connection, output, voltage and mounting match the original installation.