Digital Level Transmitter / Controller
Digital level transmitter is a new generation intelligent digital instrument with HART communication protocol, combining superior performance with easy setup and calibration.
The mechanical part operates according to the fully proven buoyancy and torque tube principles. A non-contact Hall sensor and an integrated micro-controller with high accuracy convert the rotation of the torque rod into an analog output signal.
A level controller option is available.
Calibration, configuration, and diagnostics of the instrument can be performed on-site via the built-in buttons and digital display, with a handheld communicator, or through the control system.
The instrument can be adapted to your existing displacer chambers.
Application:
· Liquid level measurement
· Interface level measurement
· Specific gravity measurement (only with the displacer fully immersed)
Technical specifications
-
Signal 4…20 mА/HART
-
Measurement range up to 16 000 mm
-
Nominal pressure PN 1,0 to 42 MPa
-
Medium density 150…1400 kg/m³
-
Medium temperature - 210 to 450 °С
-
Ambient temperature For temperatures below -40 °C, installation in heating boxes is provided. Reading from the LCD display is difficult at temperatures below -10 °C. The display is switched off by the device's electronics at temperatures below -15 °C.
-
Body material carbon steel / stainless steel / special steels and alloys
-
Type of connection flanged / threaded / welded
-
Accuracy ± 0,5%
-
Hysteresis ± 0,3%
-
Repeatability ± 0,2%
-
Smart functions First order filtering of output signal with configurable parameters Smart filtering of contactless sensor output signal to eliminate noise before digital signal processing Automatic tuning of the smart filtering parameters Adjustment of high level and low level alarm Adjustable failsafe output signal immediately activated in case of a failure detection Continuous self-diagnostic with a special test procedure for the Hall sensor Continuous data record: number of filling up, low level time, high level time, working time Configuration check: analysis of data base to avoid bad mounting, out of range use Storage and display of alarms that have appeared Output current generator for loop check Configurable switches (discrete outputs): Umax=30Vdc Imax=1А, activation criteria: low and high level alarms, fault or reset occurred, instrument in failsafe