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Measurement
Technique
Range
Output span
Response time
Linearity
Repeatability @ 25°C
Temperature coefficient (0
to 40°C)
Environmental
Static depth rating
Operating temp.
Storage temp.
Wiper
Wiper arrangement
(NEP-9500 series only)
Actuation
(NEP-9500 series only)
Actuation pulse duration
Actuation pulse current sink
Wiping time
Power
Operating voltage
Current consumption
Power settling time
Wiping current
Manual | NEP-9500-PLUS series turbidity probe
Status: Final | Not confidential
NEP-9500-PLUS
ISO-7027-90
To customer requirements
±2.5V or 4 – 20mA, where -2.5V or 4mA = 0NTU
0 to + V and 0 to +2.5V outputs are also available
Specify output at time of order
Approximately 1 second
1% Accuracy
± 2% across the board
< ±0.05%/°C
200m (stainless steel casing), 50m (composite casing)
-5°C to +40°C
-20°C to +50°C
Disposable and consumable – Foam pad on Polyvinyl Chloride (PVC)
or Acetal arm. Field replaceable. Mounted on central shaft, fixed by
hex set screw on to the flat part of the wiper shaft.
1. By external Transistor–Transistor Logic (TTL) / Complementary
Metal Oxide Semiconductor (CMOS) active low pulse or momentarily
contacting the wiper actuation conductor (pin 5) to 0V (pin 3).
2. Automatic wipe (periodic and power on). Please specify during the
order.
On NEP-9500 series only.
>50ms, <500ms.
On NEP-9500 series only.
1mA max.
On NEP-9500 series only 8s nominal.
During the wipe, the output is held to the output value just prior to the
wipe.
8-30V Direct Current (DC).
25mA maximum when not wiping plus up to 60mA if current output is
fitted.
2s.
NEP-9500 series only. Additional 25mA approx. at less than 10m
submersion.
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V20200309
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