Yokogawa DM8C/VD6 Liquid Density Analyzer - Manual (Page 13)

< 1. GENERAL >
1-3
IM 12T03A01-02E
1.1.3 Converter Model DM8C
Display: Digital display, fi ve digits LED
Display contents:
Density
(g/cm 3 ) after conversion to reference temperature (center temperature)
Density (g/cm 3 ) at the measuring temperature
Measuring liquid temperature (°C)
Set density value for the calibration liquid (g/cm 3 ) (displayed on call)
Temperature coeffi cient set value for the calibration liquid (x10 –5 g/cm 3 /°C) (displayed on call)
Output signal set value (%) (displayed on call)
Setting for output range low limit (g/cm 3 ) (displayed on call)
Setting for output range high limit (g/cm 3 ) (displayed on call)
Reference temperature (center temperature) set value (°C) (displayed on call)
Temperature coeffi cient set value for the measuring liquid (x10 –5 g/cm 3 /°C) (displayed on call)
Fault contents display
Output signal:
Analog output: 4 to 20 mA DC (load resistance 550 Ω or less), and 0 to 1 V DC (load
resistance 250 k Ω or more), isolated output.
Density (g/cm 3 ) after conversion to the reference temperature
Digital output: RS-232-C
(1) Communication specifi cations
• Asynchronous system
Start bit; 1 bit, Stop bit; 2 bit, Parity; none
• Baud rate; 1200 bps
• Data format; ASCII, Data length; 8 bit
• Wiring system; Two-wire system (output only)
(2) Output signal
• Transmitting contents
Measured data; Density (g/cm 3 ) after conversion to the reference temperature, density (g/cm 3 ) at
the measured temperature, measured liquid temperature (°C)
Calibration state; calibration start, error No., calibration end
Failure alarm; error No.
• Signal level
Output voltage; ON; 9 ±3 V, OFF; -9 ±3 V
Output impedance; 300 Ω