Ashcroft, Inc. offers: GC35 digital pressure sensors, GC55 wet/wet differential pressure transducers, GC51 rangeable pressure transmitters, GC31 ultra-compact digital pressure sensors, and low differential pressure transmitters/transducers. These sensors feature LED/LCD displays, and can get ranges from 0 to 7500 psi. Materials include: aluminum, glass, silicon, Valox, silicone, brass, Viton, ceramic, and stainless steel. Applications include: hydraulic presses, stamping equipment, lifts, water pressure control, water/refrigerant or ammonia based cooling systems, pressure monitoring on lubrication systems, filter monitoring, HVAC, municipal water, tire press vulcanization, etc. Other Ashcroft products include: A2-A4, K1-KX, CXLdp, DXLdp, IXLdp, RXLdp, and XLdp pressure transmitters.

Campbell Scientific, Inc. offers: CS477-L radar water-level sensors, CS475-L radar water-level sensors, CS470 bubble water level sensors, CS460-L pressure transducers, and CS450-L pressure transducers. These sensors have operating temperatures from -40 to +80°C, their output can be read by Campbell Scientific dataloggers, and they feature a measurement range of 0 to 230 ft. CS475-L features an SDI-12 signal, CS470 has an accuracy rating of ±0.02 ft, CS460-L has several output options, and CS450-L features a stainless steel casing configuration. Campbell Scientific also offers: CS455-L pressure transducers, CS431-L water level/temperature sensors, SR50A-L sonic ranging sensors, etc.

Stevens Water Monitoring Systems offers: SDX pressure sensors for liquid measurement, SDT-II liquid level pressure sensors, Greenspan PS 7000 water level sensors, Greenspan PS 3000 water level/temperature sensors, and Greenspan PS 2100 water level/temperature sensors. Accuracy ratings range from ±0.1% FS to ±0.25 FS, and operating temperatures range from -40°C to +85°C. Sensors are made of ceramic, stainless steel, Viton, polyurethane, PVC, and nylon materials. Applications include: flow measurement, lake/river wetland monitoring, ground water studies, flood forecasting, well monitoring, soil remediation, environmental impact and research studies, etc.

Omega Engineering, Inc. offers water level and temperature data loggers (with automatic atmospheric pressure compensation) and hot water meters for totalization and rate indication (with pulse output). Materials include: cast bronze, engineered thermoplastic, permanent ceramic, 303 stainless steel, etc. Water level and temperature data loggers are semiconductor sensors that have a temperature range of -40 to 176°F, they have a 0.001 psia resolution, and are submersible to 30 m. Hot water meters range in NPT size from 3/4 to 2, they have a flow ratings ranging from 0.22 to 132 GPM, and a maximum temperature allowance of 194°F.

Global Water Instrumentation, Inc. offers WL400 submersible pressure transducers for level and pressure applications. These transducers feature a 4-20mA output, they're completely submersible, compact, and have multiple level ranges available from 3' to 500'. The sensing element accuracy level measures at ±0.1% of full scale at constant temperature, and the operating temperature ranges from -40 to 185°F. Transducers are made of stainless steel, SS microscreen, titanium, and marine grade epoxy materials. Sizing is available up to 13/16" in diameter x 5 1/2" long.

Sutron offers submersible pressure transducers. Transducers measure air/dry gas pressures from 0 to 22 psi with a maximum pressure of 35 psi, and have a compensated temperature range of -10 to +50°C. Transducers use a silicon pressure cell fitted into a stainless steel package with an internal, compliant stainless steel barrier diaphragm. Applications include: hydrological down hole, hydrostatic pressure, stilling well, weir level, industrial (tank level), wastewater lift stations, etc.

GP:50 offers: pressure/level solutions for water treatment and differential pressure transducers/transmitters. Pressure/level solutions for water treatment come in a variety of configurations, including: Model 311-M351 lift station level transmitters, Model 313 submersible weir, well, pond or tank level transmitters, Model 211/311 pressure transmitters, etc. Pressure/level solutions feature: 0 to 20,000 PSI, economic pricing, 4-20mA outputs, LCD displays, etc. Differential pressure transducers/transmitters come in a variety of configurations, including: "Smart" differential pressure transducers, Model 114/214/314 ultra high range differential, Model 7540 subsea/marine service pressure transducer, etc. Transducers have ranges from 0 to 15,000 PSID.

American Sensor Technologies offers water pressure sensors for irrigation pumps. These sensors use Krystal Bond Technology and a one piece 316L stainless steel sensing element. 316L stainless steel offers excellent media compatibility for residential and commercial water applications and is NSF61 compliant.

Keyence Corp. of America offers multi-fluid pressure sensors. Sensors feature a durable, IP-67 single-piece construction for higher reliability. Sensors have a -4 to 212°F range of heat resistance, and a pressure resistance range of -29.9" Hg to 7250 psi. Applications include: oil pressure, water pressure, and air pressure.

Keller America offers autonomous water level loggers. Loggers are ideal for shallow or deep well water logging applications. They combine a water level logger with a temperature data logger and in doing so provide years of trouble-free service under the most demanding conditions. Data capture is accomplished by periodic data transfer to a laptop, Pocket PC, or via GSM modem technology for remote installations.

GE Measurement & Control Solutions offers PTX 1290 Series wastewater submersible pressure transmitters. These transducers feature 5 to 20 psig ranges, an accuracy rating of ±0.25% FS BSL, and an all-welded titanium construction. The pressure transfer medium is a silicone grease that maintains its elasticity between -40 and +250°F.

Instrumart offers GE Druck PTX1830 & PTX1835 submersible pressure transmitters for depth and level measurements. These transmitters have ranges from 1 to 900 psi, an accuracy of ±0.1% (upgradeable to 0.6% FS), and an all-welded titanium construction. Applications include: groundwater, well water, canals, rivers, sea water, etc. Transmitters have multiple lengths of cable ranging from 15 ft up to 150 ft.

Instrumentation Northwest, Inc. offers PS9805 submersible pressure transducers with 15 mV/V outputs. These transducers have a 10.75"x0.84" diameter, and an accuracy of 0.1%. Transducers are made of polyethylene, polyurethane, FEP Teflon, 316 stainless steel, and Viton materials. Applications include: ground water monitoring, environmental remediation, tank/tidal levels, pump control, natural resource management, flow monitoring, stream stage, and aquifer testing.