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pH/Redox (ORP)
Inputs
1 or 2* pH or mV inputs (*AX466 only) and solution earth
1 or 2* temperature sensors (*AX466 only)
Permits connection to glass or enamel pH and reference
sensors and Redox (ORP) sensors
Input resistance
Glass >1 x 10
13
Ω
Reference 1 x 10
13
Ω
Range
–2 to 16pH or –1200 to +1200mV
Minimum span
Any 2pH span or 100mV
Resolution
0.01pH
Accuracy
0.01pH
Temperature compensation modes
Automatic or manual Nernstian compensation
Range –10 to 150
°
C (14 to 302
°
F)
Process solution compensation with configurable coefficient
Range 0 to 100
°
C (32 to 212
°
F)
Temperature sensor
Programmable Pt100, Pt1000 & Balco 3K
Ω
Display
Type
Dual 5-digit, 7-segment backlit LCD
Information
16-character, single line dot-matrix
Energy-saving function
Backlit LCD configurable as ON or Auto Off after 60s
Logbook (with option board)
Electronic record of major process events and calibration
data
Real-time clock (with option board)
Records time for logbook and auto-cleaning functions
Control Function – AX460 Only
Controller Type
P, PI, PID (Configurable)
Control Outputs
Analog
Current output control (0 to 100%)
Time proportioning cycle time
5 to 60s, programmable in 1s steps displayed with doP or
roP
Pulse frequency
1 to 120 pulses per minute
Controller action
Reverse, direct or bi-directional (programmable)
Proportional band
0.1 to 1000%, programmable in 0.1% increments
Integral action time (Reset)
1 to 7200s in 1s steps, 0 = Off
Derivative
0.1 to 1000s in 0.1s increments
Auto/Manual
User-programmable
SPECIFICATION