APG / Automation Products Group Industrial Level and Pressure Sensors

APG / Automation Products Group industrial level sensors, pressure transducers, and digital gauges: engineering selection for automation and process monitoring.

APG ultrasonic non-contact level sensors and transmitters

APG / Automation Products Group ultrasonic level sensors of IRU and MNU series deliver dependable non-contact measurement in storage tanks and open channels. IRU-2000, IRU-2420, IRU-3430, and MNU Modbus devices resist dust and moisture with IP65 and IP68 protection.

IRU-2000, 2420, 3430, 5000, 6429, 9400 models covering ranges from 0.2 up to 15 meters
Digital MNU and MNU-IS Modbus RTU units for industrial control automation systems
Chemical-resistant PC/PET and PVDF enclosures providing IP65 and IP68 ingress protection
Analog 4-20 mA outputs, configurable limit alarm relays, and LOE remote controllers

TRUE ECHO radar level transmitters for liquids and solids

APG / Automation Products Group TRUE ECHO radar transmitters provide high-precision continuous level monitoring inside processing vessels and silos. The CR-L, CR-S, PRL, PRS, and PRX series measure liquids, viscous slurries, and bulk dry solids up to 120 meters.

TRUE ECHO CR-L units for fluids and CR-S aluminum housing units for bulk dry materials
Pulse radar transmitters PRL, dual-frequency PRS, and explosion-proof PRX instruments
Operational measurement spans reaching up to 120 meters inside severe dust atmospheres
Antenna assemblies machined from 316L SS and PVDF materials with IP68 environmental seal

APG magnetostrictive and float level transmitters

APG / Automation Products Group magnetostrictive and resistive float transmitters of MPI, MPX, RPM, and RPE series provide millimeter-grade accuracy for custody transfer. Rigid and flexible probe versions up to 15 meters monitor total level and liquid interfaces.

MPI-E, MPI-F, MPI-R, MPI-T series engineered with rigid and flexible 316L SS and titanium
Explosion-proof magnetostrictive units MPX-E, MPX-F, MPX-R, and MPX-T for fuel storage
Continuous resistive float probe models RPM, RPE, and RPS sanitary hygienic assemblies
Measurement precision down to 1 mm with Modbus RTU communication and 4-20 mA analog loop

Industrial pressure transducers and transmitters PT series

APG / Automation Products Group industrial pressure transducers of PT-200, PT-300, PT-400, and PT-405 series measure gauge, absolute, and vacuum pressures up to 2000 bar (30,000 psi). Diaphragms in 17-4 PH and 316L stainless steel withstand continuous fluid shocks.

PT-200 and PT-300 lines with amplified 0-5V, 0-10V, and 4-20 mA outputs for hydraulic systems
Heavy-duty PT-400 and explosion-proof PT-405 units spanning pressure ranges to 30,000 psi
Industrial pressure transmitters PT-L1, PT-L3, PT-L9, PT-L10 for pump and compressor units
Threaded NPT, SAE, G process fittings and heavy hammer union connections for oilfield skids

Submersible hydrostatic level transmitters PT-500 series

APG / Automation Products Group submersible hydrostatic level transmitters of PT-500, PT-500E, and PT-503 series measure fluid columns up to 175 meters (575 feet). The construction withstands corrosive effluent, chemical solutions, and integrates surge protection.

PT-500 series for deep water wells, lift stations, and municipal wastewater holding tanks
PT-500E model compliant with NSF 61 and NSF 372 standards for potable municipal water lines
Chemically inert PT-503 with PVDF housing engineered for corrosive acids and caustic liquids
Internal lightning transient suppression and polyurethane vented cable with Kevlar strain wire

Digital pressure gauges PG2, PG5, PG7, and PG10 series

APG / Automation Products Group digital pressure gauges across PG2, PG5, PG7, and PG10 series combine up to 0.25% accuracy with battery autonomy reaching 8,000 hours. Units incorporate high-visibility backlit displays, analog bargraphs, and robust IP65 enclosures.

Flagship PG10 gauge featuring oversized 5.5-inch screen, 5-digit readout, and IP65 seal
High-precision PG7 instruments with 0.25% test accuracy for industrial calibration jobs
Autonomous battery life extending to 8,000 operating hours or loop-powered 4-20 mA options
Broad measurement ranges from vacuum up to 2000 bar (30,000 psi) with 316L wetted parts

Acoustic measurement principles of APG IRU and MNU ultrasonic level sensors

Ultrasonic non-contact level transmitters developed by APG / Automation Products Group across IRU and MNU product lines deliver dependable fluid tracking without immersing sensor components into process media.

By emitting high-frequency acoustic sound bursts and timing return reflections from liquid or bulk solid surfaces, the units compute fluid heights with millimeter-level precision.

Internal microprocessor compensation circuits adjust timing calculations against ambient temperature variations, preventing seasonal sensor drift.

Rugged housings formed from high-impact PC/PET and PVDF resins deliver IP65 and IP68 environmental sealing, while standard 4-20 mA loops and Modbus RTU ports connect directly to plant automation networks.

TRUE ECHO radar technology for volatile liquids and bulk powder storage

High-frequency radar transmitters from APG / Automation Products Group under the TRUE ECHO brand deliver continuous level tracking in pressurized process reactors, bulk grain silos, and mixing vessels.

Electromagnetic microwave signals emitted by CR-L, CR-S, PRL, and PRS instruments pass through atmospheric steam, air turbulence, and suspended dust clouds without signal degradation.

Antenna assemblies fabricated from 316L stainless steel and chemical-grade PVDF withstand aggressive fluid vapors and pressure fluctuations.

Units deliver reliable level readings at sensing spans reaching up to 120 meters, allowing accurate inventory monitoring across extensive bulk storage facilities.

Magnetostrictive probe engineering for custody transfer level and interface measurement

Continuous magnetostrictive transmitters manufactured by APG / Automation Products Group across MPI and MPX series deliver high precision for petroleum custody transfer and chemical batching.

By launching current interrogation pulses along internal ferromagnetic waveguides, the instrument detects torsional strain waves reflected from magnetic float collars, achieving measurement resolution down to 0.1 mm.

Available in rigid 316L SS or titanium stems as well as flexible coiled probes extending up to 15 meters, MPI and MPX instruments simultaneously monitor overall fluid height and immiscible liquid interface boundaries in separation vessels.

Piezoresistive pressure transmitters PT series for heavy industrial machinery

Industrial pressure transducers from APG / Automation Products Group across PT-200, PT-300, PT-400, and PT-405 model lines operate in hydraulic power units, natural gas pipeline skids, and heavy compressor installations.

Featuring piezoresistive silicon sensing elements or thin-film strain gauges bonded onto 17-4 PH and 316L stainless steel diaphragms, the transmitters absorb violent fluid hammer pulses and high cyclic pressure fatigue up to 2000 bar (30,000 psi).

Internal signal conditioning delivers stable 4-20 mA or 0-10 V outputs, while explosion-proof PT-405 housings ensure operational safety within hazardous processing atmospheres.

Submersible hydrostatic transmitters PT-500 series for wastewater and deep wells

Hydrostatic level transmitters engineered by APG / Automation Products Group across PT-500, PT-500E, and PT-503 model series provide uninterrupted liquid column monitoring inside deep groundwater wells, wet wells, and municipal wastewater holding basins.

The sensor unit suspends at reservoir bottoms via heavy-duty polyurethane cabling incorporating Kevlar tension members and an atmospheric vent capillary tube.

Solid 316L stainless steel and corrosion-resistant PVDF housings isolate piezoresistive diaphragms from silt accumulation and corrosive chemicals, while integral lightning surge components defend sensitive electronics against severe electrical transients.

Autonomous digital pressure gauges PG2, PG7, and PG10 for testing installations

Electronic digital pressure gauges from APG / Automation Products Group across PG2, PG5, PG7, and PG10 series replace mechanical dial gauges in applications requiring clear visual readouts and accuracy up to 0.25%.

The PG10 unit features an oversized 5.5-inch liquid crystal display with five-digit numerical readings and a circular analog bargraph for instant pressure trend evaluation.

Battery configurations sustain continuous operation for up to 8,000 hours without battery servicing, while IP65 stainless steel enclosures shield internal electronics from moisture, process washdown, and airborne industrial particulate matter.

APG / Automation Products Group and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of APG / Automation Products Group and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.