Measured value processing – Mean value* within a time interval
– Minimum value* within a time interval
– Maximum value* within a time interval
– Median* within a time interval
– Standard deviation* within a time interval
– Hydrological discharge (Q)
* Measured value: water level/hydrostatic pressure
Individually configurable functions – Selection of units
– Water density
– Local gravitational acceleration
– Salinity
– Depth/level
– Measurement interval
– Offset
– Reference value
Measurement interval 0.5 … 59.5 s
Storage temperature –40 … +85 °C · –40 … +185 °F
Mechanical data
Dimensions
Pressure probe L x Ø 194 mm x 22 mm
Cable length 2 … 200 m ±1 % ±5 cm · 6.5 … 656 ft ±1 % ±0.16 ft
Weight
Pressure probe approx. 0.650 kg
Pressure probe cable approx. 0.055 kg/m
Material
Pressure probe housing POM, stainless steel 1.4539 (904 L),
resistant to sea water
Cable jacket PUR
Seals Viton
Separating membrane ceramic Al
2
O
3
Type of protection IP 68
Installation
Minimum bending radius pressure probe cable 49 mm · 0.16 ft
Maximum total cable length
SDI-12 200 m · 656 ft (point-to-point; no bus operation)
EIA-485 (RS-485) 1000 m · 3281 ft
Wire colors
red Supply voltage (+5.5 … +28.8 V
DC
)
orange RS-485 A
green RS-485 B
blue GND
grey SDI-12 data
Performance classification in
accordance with DIN EN ISO 4373
Measurement reliability Performance class1
Temperature range Temperature class 2
Relative humidity Class1
Product certification
FCC FCC/IECS Suppliers Declaration of Conformity (SDoC)
FCC Part 15 Rules Section §15.109
EMC
The OTT PLS 500 complies with the Eurpean Uninon directives
(IEC 61326-1: 2020) applicable at the time of production;
For details, see Declaration of Conformity (www.ott.com/resources/)
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