| Sensor |
Range |
Accuracy |
Resolution |
Type |
T-611 |
T-612 |
T-613 |
T-617 |
| Temperature |
-2 to 50ºC |
±0.05ºC |
0.01ºC |
pt100 element in a stainless steel sleeve. |
x |
x |
x |
x |
| Conductivity |
0 to 80 ms/cm
0 to 8000 us/cm |
±0.05 ms/cm
±5 us/cm |
0.02 ms/cm
3 us/cm |
Four platinum electrode cell. Low range uses KCl algorithms, high range uses standard seawater 1 algorithms |
x |
x |
x |
x |
| Salinity 1 |
0 to 60 ppt |
±0.05 ppt |
0.02 ppt |
Calculated from conductivity and temperature. |
x |
x |
x |
x |
| Dissolved Oxygen |
0 to 200% saturation
0 to 20 mg/l |
±0.5% |
0.1% |
Active Pb/Ag cell with a stabilised PTFE membrane, inbuilt stirrer to allow constant flow over membrane for stable reading. |
x |
x |
x |
|
| Turbidity |
0 to 600 ntu |
±0.5 up to 300
±5% from 300 |
0.2 ntu
0.3 ntu |
Nephelometric measurement from a detector aligned 90º to the pulsed infra-red source that is unaffected by daylight. |
x |
x |
x |
|
| pH |
0 to 14 |
±0.03 |
0.01 |
Combination Ag/AgCl with junction (common with ORP). |
x |
x |
x |
OPT |
ORP 2
(REDOX) |
-700 mV to
+1100 mV |
±3 mV |
1 mV |
Combination bare metal electrode with common reference junction with pH sensor. |
x |
x |
x |
|
| Depth |
0 to 100 m or
0 to 150 m |
±0.1%
of full scale |
0.1 m |
Dual active arm silicon strain gauge. Optional atmospheric pressure compensation. |
OPT |
x |
OPT |
x |
| Storage capacity for programmed logging – number of scans 3 |
2135 |
16300 |
|
3171 |
| Storage capacity for operator STORE button – number of scans 3 |
600 |
|
|
890 |
| Data Tag – available for operator to insert when using STORE button |
|
|
|
50 |
