Water Pressure Transmitter 26X

製品詳細

Product Description

In the high-precision level probe of the 26X series, the temperature dependence and nonlinearity are precisely compensated for in the microcontroller by means of a mathematical model. In addition to the RS485 interface, the measurement results can also be output via the integrated D/A converter as a rangeable analog signal. Extended lightning protection is also available as an option.

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series-26x datasheet DL

Features

RS485 interface can be combined with an analog interface
Analog interface can be ranged via RS485 interface (turn-down)
Modbus RTU protocol for process values and configuration
Excellent long-term stability
For many years of maintenance-free operation

Technology

Piezoresistive pressure sensor chip, encapsulated insulated
High-quality pressure transducer and tried-and-tested mathematical compensation
Robust stainless-steel housing

Accuracy

± 0,1 %FS

Total error band

± 0.25 %FS @ 0…50 °C

Pressure ranges

from 0…0,1 to 0…25 bar

sketch

Performance

Pressure

Accuracy @ RT (20…25 °C)	≤ ± 0,1 %FS	Non-linearity (best fitted straight line BFSL), pressure hysteresis, non-repeatability, zero point deviation and amplification deviation.
Total error band (0…50 °C)	≤ ± 0,25 %FS	Max. deviation within the compensated pressure and temperature range. Experience shows that, outside the compensated temperature range, the total error band is expanded by 0,1 %FS .
Compensated temperature range	0…50 °C
Long-term stability	≤ ± 0,15 %FS	Per year under reference conditions, annual recalibration recommended.
Degree of dependency on location	≤ ± 1,5 mbar	Calibrated in vertical installation position with pressure connection facing downwards.
Resolution	0,002 %FS	Digital
Signal stability	0,01 %FS	Digital noise-free
Internal measurement rate	≥ 1800 Hz	For version «3-wire + digital (0…10 V. 0…5 V)» > 6000 Hz
Pressure range reserve	± 10 %	Outside the pressure range reserve, +Inf/-Inf is displayed. If there is an error in the device, NaN is displayed.
Note	For pressure ranges < 1 bar, all data apply with reference to a full-range signal (FS) of 1 bar.

Temperature

Accuracy	≤ ± 1,5 °C	The temperature is measured on the media-isolated Pressure sensor chip. The specifications apply within the compensated temperature range.
Resolution	≤ 0,01 °C
Internal measurement rate	> 10 Hz
Note	The specifications apply within the compensated temperature range.