Series 33 X Ei (LV) / 35 X Ei (LV) / 36 XW Ei (LV) / PD-33 X Ei (LV)


Catalog excerpts

Series 33 X Ei (LV) / 35 X Ei (LV) / 36 XW Ei (LV) / PD-33 X Ei (LV) - 1

Highly Precise Pressure Transmitters Series 33 X Ei (LV) / 35 X Ei (LV) /for hazardous applications 36 XW Ei (LV) / PD-33 X Ei (LV) Series PD-33 X Ei (LV) Differential pressure measurement These piezoresistive pressure transmitters are approved for use in high explosive gas and dust atmospheres of groups I (mining industry) and II (industrial applications) where there is a high risk of explosion. Optionally available are Low Voltage Versions (LV) with 3,2...8,5 V. Signal processing This series features microcontroller-based electronic evaluation to ensure maximum accuracy. Each transmitter is gauged across the entire pressure and temperature range. This measurement data is used to calculate a mathematical model that enables correction of all reproducible errors. In this way, KELLER can guarantee high accuracy as an error band within the over-all compensated pressure and temperature range. Two compensated temperature ranges are available for the transmitters, according to choice: -10.80 °C and 10.40 °C. The level probes are gauged in the 0.50 °C temperature range only. The calculated pressure value can be read via the interface, and is simultaneously processed as an analog signal. Interface The interface is designed as a robust RS485 half-duplex for 9'600 and 115'200 baud. There is an external leadthrough for the interface on all products except the version with the DIN 43650 plug. Communication protocol: KELLER Bus and MODBUS RTU. The transmitters can be configured and the measured values can be recorded with the CCS30 software: - Read out current measured pressure and temperature values with maximum resolution Speed: at 115'200 baud, up to 330 measured values per second (depending on the converter) - Call up information and status (pressure and temperature ranges, serial number, software version, etc.) - Reprogram analog output (e.g. different units or pressure range) - Calibration: zero point and amplification can be adjusted - Special calculations, such as non-linear curve adaptation or root calculation for flow - Possibility of adjusting the low-pass filter and the communication parameters I M1 Ex ia I Ma €> II 1G Ex ia IIC T4...T6 Ga © II 1D Ex ia IIIC T 130 °C Da KEMA 04 ATEX 1081 X IECEx DEK 14.0070 X ELECTRICAL CONNECTIONS Drawings of Series 36 XW Ei, PD-33 X Ei and mining version M available on request. vtoHS KELLER AG fur Druckmesstechnik CH-8404 Winterthur +41 52 235 25 25 H KELLER Ges. fur Druckmesstechnik DE-79798 Jestetten +49 7745 9214 0 E Edition 12/2017 Subject to alterations Companies approved to ISO 9001 lafr

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Series 33 X Ei (LV) / 35 X Ei (LV) / 36 XW Ei (LV) / PD-33 X Ei (LV) - 2

Specifications Standard Pressure Ranges (FS) and Overpressure in Bar PR-36 XW Ei 0,3 (pressure ranges Series PD-33 X Ei on request) PAA: Absolute. Zero at vacuum PA: Absolute. Zero at 1 bar abs. PR: Gauge pressure. Zero at atmospheric pressure PD: Differential All intermediate ranges for the analog output are realizable with no surcharge by spreading the standard ranges. Accessing the extended area 0.1 bar Also negative and further +/- ranges possible. Option: Adjustment directly to intermediate ranges (below 20 pieces against surcharge). Type RS 485 Digital Interface RS485 Total...

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