Hach LDO AQS sensors, Руководство пользователя

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Table of contents
Specifications on page 3 Operation on page 8
General information on page 4 Maintenance on page 9
Installation on page 6 Replacement parts and accessories on page 10
Specifications
Specifications are subject to change without notice.
Specification Details
Wetted materials AQ sensor—standard freshwater probe
• CPVC, sensor end and cable end
• Polyurethane, over-molding on cable end and cable jacket
• 316 stainless steel body and screws
• Viton, O-ring
• Noryl, nut on the cable end
AQS sensor—standard seawater probe
• CPVC, sensor end and cable end
• Polyurethane, over-molding on cable end and cable jacket
• PVC seawater body
• Seawater epoxy sealant
• Noryl, nut on the cable end
IP classification IP68
Wetted materials (sensor cap) Acrylic
Measurement range (dissolved
oxygen) 0 to 20 ppm (0 to 20 mg/L)
0 to 200% saturation
Measurement accuracy (dissolved
oxygen) Below 5 ppm: ± 0.1 ppm
Above 5 ppm: ± 0.2 ppm
Repeatability (dissolved oxygen) 0.1 ppm (mg/L)
Response time (dissolved oxygen) T
90
<40 seconds
T
95
<60 seconds
Resolution, sensor (dissolved
oxygen) 0.01 ppm (mg/L); 0.1% saturation.
Measurement range (temperature) 0 to 50 °C (32 to 122 °F)
Measurement accuracy
(temperature) ± 0.2 °C (± 0.36 °F)
Interferences No interferences from the following: H
2
S, pH, K
+
, Na
+
, Mg
2+
, Ca
2+
, NH
4
+
,
Al
3+
, Pb
2+
, Cd
2+
, Zn
2+
, Cr (total), Fe
2+
, Fe
3+
, Mn
2+
, Cu
2+
, Ni
2+
, Co
2+
, CN
–
,
NO
3
–
, SO
4
2–
, S
2–
, PO
4
3–
, Cl
–
, Anion Active Tensides, Crude Oils, Cl
2
<
4 ppm
Storage temperature –20 to 70 °C (–4 to 158 °F)
Maximum temperature 0 to 50 ºC (32 to 122 °F)
Calibration Factory calibrated. Replace the sensor cap at 2-year intervals or more
frequently, if necessary.
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