Highly Precise Pressure Transmitters Series 33 X / 35 X Mathematically Compensated / Programmable Digital Output of Transmitter: This high precision of 0,01 %FS is available as an option (the standard Series 33 X has an accuracy of 0,05 %FS). These Series are based on the stable, floating piezoresisitive transducer and the newly developed XEMICS micro-processor with integrated 16 bit A/D converter. Temperature dependencies and non-linearities of the sensor are mathematically compensated. Transmitter with Analog Output: Integrated in the XEMICS processor is a D/A converter of 16 bit for analog signal outputs of 4…20 mA or 0…10 V. The output rate is 400 Hz. The accuracy is diminished by this converting process by 0,05 %FS. The digital output is available on all transmitters with analog output. |
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| Pressure Ranges |
0,8...1000 bar (abs./rel.) |
| Output Signal | RS485
(digital) |
| Accuracy,
Error Band (10…40 °C) |
typ. 0,05 %FS
(digital) |
| Optional:
Precision (only for Series 33 X and for ranges > 10 bar) |
typ. 0,01 %FS (digital) |
| Long Term Stability typ. | Gauges:
1 mbar or 0,05 %FS Absolute: 0,5 mbar or 0,025 %FS (10…40 °C) |
| Resolution | 0,002 %FS |
| With the READ 30 software and the KELLER converter cable, the calculated pressure can be displayed on a Laptop or PC. The READ 30 software also allows the recording of pressure signals and the graphic display on the PC. Up to 128 instruments can be hooked together to a Bus-system. | |
| Accuracy
and Precision “Accuracy” is an absolute term, “Precision” a relative term. Dead weight testers are primary standards for pressure, where the pressure is defined by the primary values of mass, length and time. Highest class primary standards in national laboratories indicate the uncertainty of their pressure references with 70 to 90 ppM or close to 0,01%. Commercial dead weight testers as used in our facilities to calibrate the transmitters and manometers indicate an uncertainty or accuracy of 0,025 %. Below these levels, KELLER use the expression “Precision” as the ability of a pressure transmitter or manometer to be at each pressure point within 0,01 %FS relative to these commercial standards. The transmitter’s full-scale output can be set up to match any standard of your choice by correcting the gain with a calibration software. |
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Data Sheet Series 33 X /35 X |
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Editorial Contribution Series 33 X / 35 X |
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Press Release Series 33 X / 35 X |
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Info Flyer (2-page) |
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EC-Declaration of Conformity 33 X |
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EC-Declaration of Conformity 35 X |
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Case Study: Flexible COTS Pressure Measurement System |
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Product Shot Series 33 X |
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Series PD-33 X |
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Series 35 X |
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| Series 33/35S has been replaced by Series 33 X / 35 X. The data sheet of Series 33/35S can still be downloaded under the following link: Data Sheet Series 33/35 S (obsolete) |
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