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Kel-26y

Keller Series 26Y

sku Product SKU:  KEL-26Ys

The pressure transmitters Series 26 Y are used in water level measurements that are price-sen
-
sitive but still require considerable accuracy.
Technology
Y-series transmitters have an extremely small temperature error. This is achieved by means of
digital compensation of an all-analogue signal path. The gain and the zero point of the gain circuit
can be influenced by digital/analogue converters. These receive their numerical values from an
EEPROM that is addressed depending on the temperature. A mathematical model for TC zero
and TC gain with any order can therefore be determined in the calibration process and stored in
the transmitter with a resolution of 1,5 K. The accuracy of the end product therefore essentially
depends on the amount of testing and the linearity of the measuring cell.
With the Series 26 Y, the monocrystalline silicon measuring cell is reliably protected from the
measuring medium by a stainless steel diaphragm. The steel diaphragm itself is protected from
mechanical influence by a plastic cap, and has outstanding performance features with regard to
accuracy and stability due to its large diameter of 17 mm

The Y-line transmitters have an extremely small temperature error. This is achieved using an additional circuit containing a temperature sensor that subdivides the temperature range into fields that are 1,5 Kelvin (K) wide. The TK zero and TK compensation values are calculated for each field and programmed into the additional circuit. During operation, these values are fed into the analogue signal path depending on the temperature. Each temperature is the „calibration temperature” for this transmitter. The accuracy thereof is mainly determined by linearity. 120 fields are available, representing a possible temperature range of 180 K. The wider the temperature range, the greater the amount of testing that is needed to minimise the inaccuracy of the mathematical model.

ZAR 0,0000

Kel-36XKy

Keller Series 36XKy

sku Product SKU:  KEL-36XKys

Specifically designed for extended service in sewage lift station environments, the 36 XKY
by KELLER features a relatively wide sensing diaphragm yet small overall size. The 36 XKY
incorporates a monolithic diaphragm formed from Kynar
®
, which combines the non-stick quality
of Teflon with superior toughness and abrasion resistance that simplify installation and eliminate
the need for bulky and expensive protective cages.
The 36XKY utilizes proven piezoresistive silicon measurement technology combined with Kel
-
ler’s state-of-the-art, microprocessor-based signal conditioning circuitry to provide outstanding
accuracy and reliability over a wide compensated temperature range.
It is perfectly suited for pump control applications that require standard 2-wire (4...20 mA
current loop) or 3-wire (0...10 V) output transmitters. The RS485 interface allows users
to scale the analog output to any desired range within the standard pressure range. The
36 XKY is typically suspended into the liquid by a standard Hytrel
®
-jacketed cable that is
both self-supporting and vented. Optional: Keller’s enhanced lightning protection makes this
trans-mitter ideal for installation in areas prone to chronic damage due to transients caused by
lightning.
Using the Keller CCS30 software and appropriate adapter cable, the user can scale the
analog output of the 36 XKY, display and record pressure and temperature readings, and access
a variety of other available functions. All of the available functions are defined in the Series 30
Communications Protocol. The CCS30 and Series 30 Communications Protocol are available
free of charge from the company website

ZAR 0,0000

Kel-DCX-16

Keller DCX-16

sku Product SKU:  KEL-DCX16

The DCX-16 is an autonomous, battery-powered data collector in a stainless steel housing with a very small diameter of only 16 mm. The housing and the pressure sensor element are completely welded in, so sealing rings are eliminated at this point. In applications where a small probe diameter is an advantage, the logger can record the water level (pressure) and the temperature over long periods.

As well as the battery compartment with its double seal, the small-diameter (16 mm) submersible sensor includes electronic circuitry featuring the latest microprocessor technology. It records the pressure and temperature of the medium with high measurement accuracy and resolu-tion, and it uses a mathematical model to correct any linearity or temperature errors made by the pressure sensor. High data reliability is guaranteed thanks to the use of a nonvolatile data memory

The various configuration options allow the data logger to be adapted to the measuring point so that only specified events will be detected and stored. Event-controlled recording and loginterval recording can be set independently of one another. In addition, installation data and comments on the measuring point can be stored in the logger. Installation is fast and simple with fixing disks of various sizes which can be fitted as options: these match locking units (caps) from different manufacturers for levels of 1” or more (2” or more with light plummet aperture), so measuring points can be implemented at a fraction of the previous cost. Three versions of the data collector are available:

DCX-16

The sensor, electronics and battery are accommodated in one housing. To extract data, the data collector must be removed from the measuring point, and the watertight screw cap that allows access to the read-out plug /interface must be unscrewed. The DCX-16 operates with an absolute pressure sensor. In shallow water, when the influence of air pressure fluctuations has to be taken into account, a second logger (barometric logger, obtainable separately) positioned on the surface of the water must be used to record the air pressure progression. The computer software then calculates the differential pressure or the water level by subtracting the two measured data.

ZAR 0,0000

Kel-DCX-ECO

Keller DCX18 ECO

sku Product SKU:  KEL-DCX18-ECO

The DCX-18 ECO is an autonomous, rechargeable battery powered instrument. It features a stainless steel 18 mm in diameter housing designed to record pressure (water depth) and temperature over long periods at a very economical price. Its small size, rechargeable battery, fully welded housing and the relative sensor option are just a few of the many advantages provided by the DCX-18 ECO.

The electronics employ the latest microprocessor technology which give high accuracy and resolution for the pressure and temperature signals. The measured values are mathematically compensated for all linearity and temperature errors of the pressure sensor. The use of a non-volatile memory for data storage ensures high data security.

DCX-18 ECO

The sensor, electronics and the rechargeable battery are housed in a fully welded stainless steel tube for submersible deployment. For data read-out, the DCX-18 ECO must be recovered from the measurement point. The end cap, sealed by two O-Rings, must then be removed to access the serial interface. The DCX-18 ECO works with an absolute pressure sensor. In shallow water depths where the influence of barometric pressure changes should be considered, it is recommended that a second data logger (Baro) is placed at the surface, to record the barometric pressure. The PC then calculates the differential pressure resp. the water depth by subtracting the two measured values.

DCX-18 ECO with cable (DCX-18 ECO SG or DCX-18 ECO VG)

An optional cable is available for the DCX-18 ECO, enabling data retrieval or configuration and charging the battery without removing the data logger. For relative measuring devices, the cable incorporates a capillary tube which enables venting the relative sensor.

Rechargeable Battery:

The DCX-18 ECO is charged over the USB connection with the K-104M converter connected to PC. For fast charging, connect the power supply unit or the car charging adapter to the converter. The charge status is displayed in the logger software

ZAR 0,0000

Keller DCX-25PVDF

Keller DCX-25PVDF

sku Product SKU:  KEL-DCX-25PVDF

The DCX-25 PVDF is an autonomous, battery powered instrument designed to record water depth (pressure) and temperature over long periods. The housing is made of polyvinylidene fluoride and the sensing diaphragm is available in either Hastelloy C-276 or titanium 6AL-4V. This combination of wetted materials ensures compatibility with even the most aggressive media

This data collector (Ø 25 mm) integrates a pressure sensor, electronics and battery in one housing. The electronics employ the latest microprocessor technology, which give high accuracy and resolution for the pressure and temperature signals. The built-in pressure sensor is mathematically compensated for all linearity and temperature errors. The use of a non-volatile memory ensures high data security.

The DCX-25 PVDF works with an absolute pressure sensor. For installation, the data collector is secured by a suspension cable and immersed into the media to be measured and must be recovered for data readout. In shallow water, where the influence of barometric pressure changes should be considered, it is recommended that a second data logger (e.g. DCX-22 Baro) is placed at the surface to record the barometric pressure. The Logger PC software then calculates the water depth by subtracting the two measured values. The housing of the data logger can be opened easily without any tools, thus allowing quick access to the replaceable battery and the interface connector for configuration and data download.

Interface with a PC is accomplished using one of Keller’s converter cables which are available in either RS232 connection (K103A) or USB connection (K104A). The necessary converter drivers are included with converter purchase, along with the Keller Logger software. This intuitive software provides the capability to customize the instrument, as needed, for each installation. Users can configure the DCX-25 PVDF to record at fixed time intervals, using fixed or eventbased start times, in user-selectable measurement methods to ensure that only the most useful and meaningful data is collected and stored.

For applications that do not require highest compatibility with aggressive media, Keller offers the DCX-16, DCX-18, DCX-22 and the DCX-38.

ZAR 0,0000


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