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Keller provides a convenient, portable solution for calibration of their standard accuracy pressure transducers and depth sensors. Powered by a lithium battery (included) this lightweight calibration system is good for 200 hours of continuous operation before the battery needs to be changed. Like Keller’s digital indicators, battery change can be accomplished easily and without tools. The Full-version system includes a transmitter power and input loop with the Standard-version does not. The Full-version requires additional 9V batteries or an AC power supply. Accuracy is 0.1% FS which is good for transducers with error bands 0.5% FS and greater or two-point calibration checks on higher pressure transducers. The Keller CALI LP is a pneumatic system with hand pump and vacuum pump. Pressure ranges from -1 bar to 10 bar The Keller CALI MP is a pneumatic system with screw pump. Pressure ranges from -1 bar to 25 bar The Keller CALI HP is a hydrualic system with screw pump. Pressure ranges to 700 bar
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A lower-cost analogue-only alternative to the Acculevel, the Keller Levelgage is every bit as durable and reliable as other transducers in this series. Available pressure ranges: user-selectable from 0-3 to 900 ft of water Accuracy: 1% FS TEB, Optional Accuracy: 0.5% FS Temperature compensated -10°C to 80°C Electrical Input: 8 – 28V DC with built-in lightning/surge protection. Output: 4..20 mA and 0-5V or 0-10V Physical Dimensions Ø0.825″ x 4.3″ Cable: Hytrel jacketed, Shielded, vented 3-wire. Ø0.23″. User-replaceable.
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The Keller LevelRat was developed in response to the need for a durable, non-stick, abrasion resistant flush diaphragm for high grease and solids content sewage lift stations. The resultant formed Kynar® diaphragm design is ideal for other applications such as slurry tanks and landfill monitoring as it is a much more durable material than standard Teflon-coated rubber solutions while retaining the anti-fouling properties. Available pressure ranges: user-selectable from 0-5 to 100 ft of water Accuracy: 1% FS TEB Temperature compensated -10°C to 80°C Electrical Input: 8 – 28V DC with built-in lightning/surge protection. Output: 4..20 mA and 0-5V or 0-10V Physical Dimensions Ø1.26″ x 4.3″ Cable: Hytrel jacketed, Shielded, vented 3-wire. Ø0.23″. User-replaceable. A 1/2″ conduit fitting is available for all Keller transducers.
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The Keller Microlevel is the smallest diameter submersible transmitter in its class. Ideally suited for down-hole and driven well applications the Microlevel combines all the advantages as the Acculevel into a smaller, more convenient package. Available pressure ranges: user-selectable from 0-3 to 900 ft of water Accuracy: 0.25% FS TEB, Optional Accuracy: 0.1% FS Temperature compensated 0°C to 80°C Electrical Input: 10 – 30V DC with built-in lightning/surge protection. Output: RS-485 and 4..20 mA Physical Dimensions Ø0.63″ x 4.9″ Cable: Hytrel jacketed, Shielded, vented 5-wire. Ø0.23″. User-replaceable. MODBUS Compatible.
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Ideal for low-range water level monitoring such as estuary research or pump control applications, this ceramic capacitive sensor allows precise measurement with the very high overpressure protection required for sensor durability. Available pressure ranges: user-selectable from 0-4 to 120 inches of water Accuracy: 0.25% FS TEB, Optional Accuracy: 0.1% FS Temperature compensated 10°C to 50°C Electrical Input: 8 – 28V DC Output: RS-485 and 4..20 mA Physical Dimensions Ø1.5″ x 2.5″ Cable: Hytrel jacketed, Shielded, vented 5-wire. Ø0.23″. User-replaceable. MODBUS Compatible. A 1/2″ conduit fitting is available for all Keller transducers.
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Keller 9LX and 30X series OEM pressure transmitters include Keller’s microprocessor based signal conditioning circuitry and arrive from the factory calibrated and ready to use. Standard material is 316 SST, Hastelloy C, Titanium, Platinum, and custom materials are available upon request. Available pressure ranges: standard increments from full vacuum to 1000 bar Typical Accuracy: 0.05% FS digital 0.1% FS analogue, Optional Accuracy: 0.025% FS Electrical input: 3.3 to 28V DC depending on options. Outputs: RS-485 and 4..20 mA or 0 – 10V DC. MODBUS compatible. Minimum order quantity may apply.
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Available in 316 SST, Hastelloy, Titanium, Platinum and custom materials, Keller’s high quality Swiss-made piezoresistive pressure sensors are available for custom and high-volume OEM applications. Multiple different package sizes from Ø19 mm to Ø9.5 mm are available to suit your application. Keller OEM sensors are available with analogue compensation circuitry inside the sensor housing for an additional surcharge. Available ranges: 0.1 to 1000 bar absolute or sealed gauge, 0.1 to 20 bar gauge and differential Typical accuracy: 0.5% FS Sensitivity: 200 mA FS with 1 mA regulated input (3.5V typical) Available with integrated analogue compensation circuitry upon request. Minimum order quantity may apply, Technel stocks some ranges of these transducers for your convenience.
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Using the same electronics as the 33 series or 23 series process transducers, Keller has developed a highly accurate wet/wet differential transducer. Keller’s dual-diaphragm differential cell is available in 316 SST, Hastelloy and Titanium Available pressure ranges: 1 to 30 bar differential with 200 or 600 bar static line pressure. Achieveable Accuracy 0.05% FS TEB G1/4″ female threaded connections both sides. Overpressure protection is smaller on reference side of transducer than pressure side.