Hach POLYMETRON 9135 Operator's Manual page 12

Transmitter 9135 - pH/redox measurement
Calibration type
Slope matching
Zero matching
Temperature calibration
Setpoint
Neutral zone
Proportional band
Periodicity
Controller output
Automatic/manual switch
Output signals
Allocation
Type
Maximum load
Page 8
CALIBRATION
NIST (4,00 ; 6,88 ; 9,22)
-
DIN9 (4,00 ; 7,00 ; 9,00)
-
DIN10(4,00 ; 7,00 ; 10,00)
-
- 2 points (manual)
- 1 point process
- values (slope and offset)
41 ... 71 mV to 25°C
70 ... 120 %
± 3 pH
± 250 mV
- 50°C...+20°C
(- 90°F...+ 36°F)
CONTROLLER
programmable in the range 0...14 pH or -1500 mV
... +1500 mV
programmable from 0...3 pH or 0...200 mV symetric
around the regulating point
programmable from 0...500%
programmable from 3 to 60 seconds (impulse
control) or from 1 to 30 seconds (frequency control)
2 isolated contacts S1 and S2
S1 : base injection
S2 : acid injection
possible
ANALOGUE OUTPUT
2 galvanicly outputs insulated [ ]
pH / redox / temperature
0 ... 20 mA
4 ... 20 mA
800 Ω