Metrohm 719 S Titrino - Manual (Page 115)

4.2. Diagnosis
719 S Titrino 111
Input 2 XX mV
• Carry out the same measurements as with Input 1.
• Press .
analog input test 1...5
• Short-circuit input ‘Ind I’ (e.g. with cable 3.496.5070).
• Press <3>.
Input 1-2 XX mV
The differencial voltage between inputs ‘Ind I‘ and ‘Ind II’ is displayed.
Example: 0 - (+)1500 mV = -1500 mV
• Remove cables from the inputs ‘Ind I’ and ‘Ind II’.
• Press .
analog input test 1...5
7.2 To check Pt 100 / 1000 connection
• Connect a Pt 100 or Pt 1000 sensor, a resistor switch-box or a single resistor of 100
Ω or 1 kΩ, respectively, to sockets ‘Pt 100/1000’ by means of short cables.
• Press <4>.
Pt 100* XX °C
(* or Pt 1000)
Tolerance: ± 0.5 °C (Note also tolerance of resistor switch-box).
The sensor allows automatic displaying of the room temperature. (The resistor values corre-
spond to 0°C.)
• Press .
analog input test 1...5
• Remove cables and resistor switch-box.
7.3 Polarizer test
• Press <5>.
polarizer test
• Press .