China
Manufacturer/ Producer
Xi'an Landau Petroleum Technology Co., Ltd is a high tech company in well logging instruments and equipment development, production, sales and services relying on profound R&D force of Xi'an Petroleum University. We have been the leading manufacturer in the field of well logging of China with over 10 years development. Our products have been widely put into production in over 20 domestic oilfields, such as Xinjiang, Daqing, Zhongyuan, Tuha, Liaohe, Dagang, Shengli, Nanyang, Changqing, Huabei, Yanchang, West Bureau of Sinopec, etc. We have been the major provider in the field of well logging equipment of China market with 30% market share. At the same time, our products have been exported and widely used in over 10 foreign countries, such as Azerbaijan, Uzbekistan, Kazakhstan, Iran, Iraq, Sudan, Turkmenistan, Algeria, Mauritania, Yemen, Saudi Arabia, Indonesia, Ecuador, Oman, etc. We have a broad market covering North American, South American, Russia, Middle East and Africa, more t
KELLER DRUCKMESSTECHNIK
Switzerland
The pressure transmitters of the 4LD series use the chip-in-oil technology developed by KELLER, uniting a pressure measuring cell, digital temperature compensation and signal processing in a compact housing made of stainless steel or Hastelloy. The transmitters are extremely resistant to environmental influences and delivery highly accurate measurement results as a digital output signal. The I2C interface and the low supply voltages make it easy to integrate in microcontroller-based systems. The extremely low power consumption is ideal for battery-operated devices. The D line is perfect for IoT solutions.
SEBA HYDROMETRIE GMBH & CO. KG
Germany
Measuring data collector with Baro sensor optimised for precise detection of atmospheric pressure Robust, Ø 22 mm slim stainless-steel case 16 MB memory for approximately 1.120.000 readings Replaceable lithium batteries for about 8-10 years service life Operation with notebook, tablet, PC, smartphone or tablet via Bluetooth (optional) Use in conjunction with Dipper-APT for atmospheric pressure compensation Expandable with data transmission module SlimCom Air pressure measurement for the collection of climate data and for the correction of absolute pressure measurement systems (e.g. Dipper-APT)
KELLER DRUCKMESSTECHNIK
Switzerland
The differential pressure transmitters of the PRD-33X series are designed for accurate measurements in low pressure ranges with very high overload on both sides. In addition to the differential pressure sensor, which may only be exposed to gases at its rear face, the devices have an additional absolute pressure sensor that measures the line pressure. Both measured values are output via the digital RS485 interface and are the ideal basis for cryogenic tank monitoring.
KELLER DRUCKMESSTECHNIK
Switzerland
The differential pressure transmitters of the PD-23 series are designed for industrial applications and are supplied with a G1/4 internal thread as standard. They are based on a fully analog circuit. The PD-23 transmitters have a single silicon diaphragm in their interior, which is pressurised from both sides and measures the pressure difference directly. This design enables them to measure tiny pressure differences even at an extremely high line pressure.