Metrohm 763 PVC Thermomat Manual - Manual (Page 143)

6 Appendix
763 PVC Thermomat
136
6.1.3 Conductivity measurement
Sensor 6.0913.130 Conductivity cell built into
measuring vessel cover
Construction Conductivity measurement cell with 2 steel
electrodes
Measurement principle Alternating current measurement with 1 kHz
frequency and approx. 1.7 V amplitude
(peak to peak).
Cell constant 1.00 … 1.20
(the exact value can be manually entered or
automatically determined)
Measurement range 0 … 400 µ S/cm
Resolution 0.1 µ S/cm
Maximum error ± 1 % ± 0.5 µ S/cm
6.1.4 Gas flow regulation
Gas flow supply External supply from N
2
cylinder
Adjustable range 7 … 25 L/h
Max. variation from
set range
± 10 %
6.1.5 GLP test set
External temperature sensor
Type Pt100 jacketed element 1.9 mm dia.,
with 4-lead technology; DIN IEC 751 class B
Calibration accuracy 0 … 90 °C: ± 0.02 °C
90 … 220 °C: ± 0.03 °C
Max. variation of measured
temperature from true value
(50 … 220 °C)
± 0.3 °C
Test resistor
Resistance 10 k Ω
6.1.6 RS232 interface
Connector Dsub 9-pin (male)
Function TxD and RxD signal for connection with
software handshake
Default settings 9600 baud, 8 bit, 1 stop bit, no parity,
XON/XOFF