Solartron Mobrey 7828 - 7828 Transmitter Specifications; Sensor Performance Specs

78285000_AB A-1
A
Specification
A.1 GENERAL
The 7828 Insertion Density Transmitter comprises a vibrating fork density sensor, with
processing electronics within the housing which provide full on node configuration; all
signal processing, calculations, and calibration adjustments are made without the need for
external electronics.
A 4-20mA analog output is available, proportional to a user-defined range of either line
density, base density, temperature, or one of the available special functions (calculated
parameters).
An RS485 serial communications link is also available, which utilises the Modbus protocol
to provide a means of configuring the device, retrieving data measurements, and
performing diagnostics.
ADView, a PC software application running under Windows 3.1, 95, 98 or NT, is available
for data logging, configuration and diagnostics purposes.
A.2 SPECIFICATION
A.2.1 SENSOR PERFORMANCE
Density measurement
Measurement technology Tuning Fork driven/sensed by piezoelectric
crystals
Operating range 0 to 3 g/cc (0 to 3000kg/m
3
)
Calibrated range 0.6-1.25g/cc (600 to 1250kg/m
3
)
Accuracy
±1 kg/m
3
Repeatability
±0.1 kg/m
3
Temperature coefficient
uncorrected at 1000 kg/m
3
corrected
-1.5 kg/m
3
/°C
0.1 kg/m
3
/°C
Fluid viscosity range 0 to 20 000cP
(for viscosities above 500cP, in-situ calibration is
recommended)
Pressure effect Negligible