Single and dual input analyzers for pH/Redox (ORP)
AX416, AX436, AX460, AX466 & AX468 9 Specification
64 IM/AX4PH Rev. P
9 Specification
pH/Redox (ORP) – AX460 and AX466
Inputs
One or two* pH or mV inputs and solution earth
One or two* temperature sensors
Enables connection to glass or enamel pH and reference sensors and
Redox (ORP) sensors
*AX466 only
Input resistance
Glass >1 x 10
13
Reference 1 x 10
13
Range
–2 to 16 ph or –1200 to +1200 mV
Minimum span
Any 2 ph span or 100 mV
Resolution
0.01 pH
Accuracy
0.01 pH
Temperature compensation modes
Automatic or manual Nernstian compensation
Range –10 to 200 °C (14 to 392 °F)
Process solution compensation with configurable coefficient
Range –10 to 200 °C (14 to 392 °F)
adjustable –0.05 to +0.02 %/°C (–0.02 to +0.009 %/°F)
Temperature sensor
Programmable Pt100, Pt1000 or Balco 3 k
Calibration Ranges
Check value (zero point)
0 to 14 pH
Slope
Between 40 and 105 % (low limit user-configurable)
Electrode Calibration Modes
Calibration with auto-stability checking
Automatic 1 or 2 point calibration selectable from:
ABB
DIN
Merck
NIST
US Tech
2 x user-defined buffer tables for manual entry,
2-point calibration or single-point process calibration
Conductivity – AX416 Only
Range
Programmable 0 to 0.5 to 0 to 10,000 µS/cm
(with various cell constants)
Minimum span
10 x cell constant
Maximum span
10,000 x cell constant
Units of measure
µS/cm, µS/m, mS/cm, mS/m, M-cm and TDS
Accuracy
Better than ±0.01 % of span (0 to 100 µS/cm)
Better than ±1 % of reading (10,1000 µS/cm)
Operating temperature range
–10 to 200 °C (14 to 392 °F)
Temperature compensation
–10 to 200 °C (14 to 392 °F)
Temperature coefficient
Programmable 0 to 5 %/°C and fixed temperature compensation
curves (programmable) for acids, neutral salts and ammonia
Temperature sensor
Programmable Pt100 or Pt1000
Reference Temperature
25 °C (77 °F)
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 60 s
Logbook*
Electronic record of major process events and calibration data
Real-time clock*
Records time for logbook and auto-manual functions
*Available if option board is fitted
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