Absolute quantum gravimeter

This procurement concerned an absolute quantum gravimeter. The device to be procured must meet the research needs of the National Land Survey's Centre for Geoinformatics and the performance requirements set by the EU project "EQUIP-G". Our needs for a new gravimeter were: 1. The device must be used for both research and metrology in a unit corresponding to the purchasing unit elsewhere (reference requirement) 2. The device must be suitable for both laboratory and field measurements 3. The device must come with all necessary equipment for operating the device both in the laboratory and in the field 4. The device must be safe to use 5. The expected service life of the device is at least 15 years 6. The delivery time of the device must be less than 36 weeks from the order 7. The device manufacturer must have representation in the EU customs area (warranty and service situations) 8. The delivery must include necessary comprehensive documentation, either in Finnish or English, explaining the use and maintenance of the device. The device to be procured will be used, among other things, for determining the absolute value of gravity with the highest possible accuracy class (10 nm/s2) in laboratory conditions and field measurement conditions, as well as for continuous measurements to form gravity time series. The absolute gravimeter is also suitable for functioning as a measurement standard for the acceleration of gravity.