Technel represents Keller America one of the world's premier manufacturers of pressure and depth sensors ideally suited to a wide range of applications. A complete range of pressure transmitters are available with precision to 0.01% FS and feature both digital and analog outputs with programmable gain and offset to match any application. The ultra-sensitive Series 41X transmitters have resolution to 1 micro-bar and programmable output. A wide range of depth sensors are offered including Acculevel, Digilevel, Econolevel and Levelgage among others to meet any application and price point. Lightning protection and optional accuracy to 0.1% FS are available. Digital gauges with data recording ability and precision to 0.01% FS are in the Keller lineup and include the popular Leo and Eco series offering great value, accuracy and performance at a reasonable cost. Additionally Keller produces OEM transducers in various types and ranges suitable for OEM application at modest cost with features including digital and analog outputs and MODBUS compatibility. The GSM series of remote data logger with programmable inputs including depth sensors can be used with cell-phone SIM cards to allow the user to monitor and program the loggers from the office.
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Keller’s 23 series process transducers use analogue electronics to compensate for zero offset, sensitivity, and temperature effects. Frequency response can be up to 5 kHz compared to the 400 Hz response of the digital transducers. Available pressure ranges: Full Vacuum to 1000 bar (14,500 psi) absolute, gauge, or sealed gauge. Accuracy: 0.1% FS Electrical Input: 8 – 28 V DC Output: 4..20 mA, 0..20 mA, or 0 – 10V G1/4″ (BSPP) or G1/2″ male threaded connections are standard. ATEX Ei Flameproof, intrinsically safe, or Explosion Proof rated brazed or welded diaphragm transducers are available.
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Keller’s high-resolution low-range capacitive sensor is also available for process applications in the form of the Keller Series 41X. Available pressure ranges: 30 mbar, 100 mbar, 300 mbar, gauge, differential, or sealed gauge. Accuracy 0.1% FS TEB Electrical Input: 8 – 30V DC Output: RS-485 and 4..20 mA or 0 – 10V G1/4″ (BSPP) male threaded connection is standard. ATEX Ei intrinsically safe transducers are available. MODBUS Compatible
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The Keller Acculevel is a flexible, high-accuracy, submersible pressure transmitter. The extremely rugged body is available in 316 Stainless Steel, Hastelloy, and Titanium for corrosion resistance. The Acculevel is ideal for applications ranging from hydroelectric reservoir recording to drop-in tank level monitoring. 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 -10°C to 80°C Electrical Input: 8 – 28V DC with built-in lightning/surge protection. Output: RS-485 and 4..20 mA or 0-5V or 0-10V Physical Dimensions Ø0.825″ x 4.3″ 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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Remote transmitter with data logger Features- Battery operated with a lifetime of up to ten years
- High level of data security thanks to internal solid-state memory • Robust stainless metal housing
- Degree of protection up to IP68
- Includes licence-free KELLER software
- Optional cloud-based data display with KOLIBRI Cloud
- Documented interfaces for integration into your own system
- Remote transmitter: Modules selectable for 2G/3G/4G, 2G/NB-IoT/LTE-M or LoRa
- Data Loggers: 56’000 measuring point capacity reduces data transmission interval requirements to save energy. (e.g. transfer measurement points collected only once a day)
- Sensor interfaces: compatible with all KELLER level sensors and pressure transmitters
- Internal measured values: barometer, temperature and moisture sensor, real-time clock (RTC) and battery capacity/voltage
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The Keller LEO Record is a high accuracy, standalone data-logging digital pressure gauge. Using an internal Lithium battery and Keller ‘s high quality piezoresistive or capacitive pressure sensors the LEO Record is excellent for a wide range of applications. Data-logging of up to 57,000 data points is achieved using non-volatile memory and either time-based or event-based recording techniques can be used depending on your application. Available pressure ranges: -1 – 3 bar to 0 – 1000 bar Accuracy: 0.1% FS Operating temperature: 0 – 50°C Digital interface: RS-485 Battery life: up to 2 years ATEX Ei rated intrinsically safe, wash-down rated IP-65.
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Keller offers a wide range of self-contained water level loggers – The 18 mm diameter DCX-ECO along with DCX 16 mm, DCX 22 mm. Using elements from the Acculevel, Nanolevel, and even the wet/wet differential process transducers for completely maintenance-free high-accuracy logging. The Keller DCX-ECO offers an innovative rechargeable battery with up to 3 years battery life and quick 1-hr recharge time. Temperature and Pressure logging. Available pressure ranges: user-selectable from 0.5 – 100 meters of water, vented or sealed sensors available. Accuracy: 0.1% FS typical. Temperature compensated, generally -10°C to 40°C see datasheet. Battery Life: 3 years to 10 years depending on model. Lithium or Rechargeable. Programming/Reading Interface: RS-485 Internal memory for up to 57,000 data points with time-based or event-based recording options. Logger diameters from Ø0.65″ to Ø1.5″
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The Keller Digilevel and the Digilevel EC transducers combine Keller’s high-accuracy piezoresistive sensors with an intelligent SDI-12 digital interface for compatibility with equipment already installed in the field. The Digilevel EC was developed in conjunction with Technel Engineering to meet Environment Canada’s requirement for a field-replacable 3/8″ atmospheric reference tube. Both transducers include a newly designed anti-fouling flush diaphragm to resist algae growth and silting. Available pressure ranges: user-selectable from 0-3 to 900 ft of water Accuracy: 0.1% FS TEB, Optional Accuracy: 0.1% USGS OSW specification Temperature compensated -10°C to 60°C Electrical Input: 8 – 28V DC with built-in lightning/surge protection. Output: SDI-12 v1.3 with emulation modes for Tavis, Design Analysis, and Pressure Systems/Esterline transducers. Physical Dimensions Digilevel: Ø1″ x 8.9″, Digilevel EC: Ø2.5″ x 10.5″ Cable: Hytrel jacketed, Shielded 4-wire. Ø0.23″. User-replaceable. SEACON connector on Digilevel EC.
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Keller manufactures a wide range of digital pressure indicators from 1.3″ x 0.7″ x 0.4″ OEM displays to 3″ diameter high accuracy gauge. Keller gauges use an absolute or sealed gauge reference which can be manually reset. Keller gauges are wash-down rated (IP-65). Features include Tare functions, Peak or Min/Max recording mode, and o-ring swivel seal to allow rotation even under pressure. Battery life is typically 1000 hours of continuous operation when not in recording mode.
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This OEM-grade water level sensor is the lowest-cost solution we are able to provide. As a result, a minimum order quantity of 25 applies to this OEM product. This product does not include the electrical surge suppression which is standard on most other Keller transmitters. Available pressure ranges: set ranges 0-11.5, 34.5, 115.5, and 231 ft of water Accuracy: 1% FS TEB, Optional Accuracy: 0.5% FS Temperature compensated 0°C to 50°C Electrical Input: 8 – 28V DC Output: 4..20 mA Physical Dimensions Ø0.825″ x 2.9″ Cable: Hytrel jacketed, Shielded, vented 2-wire. Ø0.23″. User-replaceable.
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The Econoline pressure transmitter provides outstanding performance in a wide array of applications, from pipeline pressure to tank level monitoring. It offers several pressure ranges, electrical connections, and analog outputs (current or voltage) to simplify installation and ensure compatibility with most PLC and SCADA systems. Pressure Range: up to 10,000psi, standard accuracy, ±1.0% optional ±0.5%FS The Econoline has been approved to NSF/ANSI 61 & 372 standards for use in drinking water, is assembled to order in the U.S.
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Keller’s range of industrial transducers assembled in the USA have fast delivery times, reasonably high accuracy, a flexible list of features and options and convenient NPTm process connections. The Preciseline features a MODBUS compatible RS-485 output, the Valueline is a rugged and reliable high-accuracy analogue pressure transmitter, and the Econoline is excellent for high-volume low-cost OEM applications. Available pressure ranges: 0 – 2 to 15,000 psi absolute, gauge, or sealed gauge. Accuracy: from 1% FS to 0.1% FS TEB Electrical Input: 8 – 28 V DC with surge protection Output: 4..20 mA, 0 – 5V, or 0 – 10V. Preciseline has digital RS-485 as well. 1/4″ NPTm standard, others available.
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