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AW T4 20 |
U N I V ER S A L 4 - W I R E , D UA L- I N P U T T R A N SM I T T ER | O I/AW T4 2 0 - EN R E V. B
…17 Specification
4-electrode conductivity
Conductivity input
Measurement range and resolution
Sensor
group
Conductivity
range
Display
resolution
Accuracy
repeatability
A
0 to 2000 mS/cm
0.1 µS/cm
±0.5 % of measurement
range per decade
B
0 to 2000 µS/cm
0.01 µS/cm
Dynamic response
<3 s for 90 % step change when damping is Off
Damping
Configurable: Off, Low, Medium and High
Temperature input
Temperature element types
• Automatic temperature sensor recognition for Pt100,
Pt1000 and 3k Balco RTDs in either 2-lead or 3-lead
configurations
• Temperature element can be used for automatic
temperature compensation of the conductivity solution
Measurement range and resolution
Sensor
group
Temperature
range
Display
resolution
Accuracy
repeatability
Pt100
Pt1000
3K Balco
–20 to 200 °C
(–4 to 392 °F)
0.1 °C
(0.1 °F)
0.1 °C
(0.18 °F)
None
User-programmable
–20 to 300 °C
(–4 to 572 °F)
N/A
Temperature compensation modes
• 0 to 15 % NaOH
• 0 to 18 % HCl
• 0 to 20 % H
2
SO
4
• 0 to 40 % H
3
PO
4
• 0 to 20 % NaCl
• 0 to 50 % KOH
• User-defined table
Reference temperature
25 °C (77 °F)
Configured output range
Sensor group
Min . span
Max . span
A
100 µS/cm
2000 mS/cm
B
10 µS/cm
2000 µS/cm
pH/ORP (Redox)
pH/ORP (Redox) input
Sensor types
pH:
Glass, Antimony (Sb)
ORP (Redox): Platinum (Pt), Gold (Au)
Input impedance
>1×10
13
Ω
Measurement range and resolution
Type
Range
Display resolution
Accuracy repeatability
pH
0 to 14 pH
0.01 pH
±0.01 pH
ORP
±2000 mV
1 mV
±1800 MV: ±1 mV
±2000 MV: ±3 MV
Dynamic response
<3 s for 90 % step change when damping is Off
Damping
Configurable: Off, Low, Medium and High
Temperature input
Temperature element types
• Automatic temperature sensor recognition for Pt100,
Pt1000 and 3k Balco RTDs in either 2-lead or 3-lead
configurations
• Temperature element can be used for automatic
temperature compensation of the conductivity solution
Measurement range and resolution
Sensor
group
Temperature
range
Display
resolution
Accuracy
repeatability
Pt100
Pt1000
3K Balco
–20 to 200 °C
(–4 to 392 °F)
0.1 °C
(0.1 °F)
0.1 °C
(0.18 °F)
None
User-programmable
–20 to 300 °C
(–4 to 572 °F)
N/A
Temperature compensation modes
• pH:
Manual, Automatic Nernstian,
Nernstian with solution coefficient
• ORP:
Manual, solution compensation coefficient
Reference temperature
25 °C (77 °F)
Configured output range
Type
Min . span
Max . span
pH
1 pH
14 pH
ORP
100 mV
4000 mV
