A new operating mode for nutation NMR magnetometers and flowmeters with flo
wing fluid that allows for an increase in the measuring accuracy without si
gnificant design changes is tested. The increase is due to modulation of th
e magnetic field in the zone of the nutation coil location. The nutation li
ne formed in this case has an increased slope at the working point as compa
red with that in the modulationless mode.