aquastar MT pH/ORP/T
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Sensorer
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aquastar MT pH/ORP/T
Sensorer
aquastar MT pH/ORP/T
Transmitter head (measurement electronics) for pH, redox and temperature sensors. Digital RS485 Modbus RTU and 4–20 mA, fits aquastar mobile.

The aquastar MT pH/ORP/T is intelligent measurement electronics that screw directly onto a pH, redox or temperature sensor and pass the measured value on as a digital bus signal or as an analog signal. The connection is a 5-pole M12 plug. Together with the aquastar mobile it is plug & play: the electronics are configured automatically and start measuring immediately.

Alternatively, use the 4–20 mA output, which works as a 2-wire transmitter with a freely scalable standard signal. The electronics are available with N-connection or BNC plug for commercially available pH/redox sensors, and with Variopin for sensors with integrated temperature probe. When a sensor wears out, the electronics are simply moved to the new one.

Used in aquaculture and fish farming, marine research and aquariums, water and waste water, food and beverages, chemistry, power stations and environmental monitoring.

Tekniske specifikationer

Sensortype

Andet

Måleområde, min.

-1

Måleområde, maks.

15

Måleenhed

pH

Nøjagtighed

< 1 mV ved pH 7

Outputsignal

4-20mA

Forsyningsspænding

DC 4,8–30 V (digital) / DC 11,5–30 V (4–20 mA)

Elektrisk tilslutning

M12-stik

Procestilslutning

N-tilslutning, BNC-stik eller Variopin (til pH/redox-sensorer)

IP-klasse

IP67

Omgivelsestemperatur

-10°C til +60°C

Indbygget display

Nej

Mål

Ca. 121 mm (Variopin) / ca. 134 mm (N-tilslutning), Ø 19,8 mm

Grænseflader

RS485 Modbus RTU, 4–20 mA

Opbevaringstemperatur

-10°C til +85°C

Godkendelser

EMC: DIN EN 61326-1 (emission klasse B, industriel immunitet)

Vigtigste features

  • Digital RS485 Modbus RTU (address 1–247, up to 115200 baud)
  • Analog output 4–20 mA as 2-wire transmitter (accuracy typ. ±0.04 mA)
  • Plug & play with aquastar mobile
  • Cable length up to 1000 m in digital operation
  • Measuring range pH −1 to 15, redox −500 to +1700 mV
  • Temperature input Pt1000, −10 to +100 °C, ±0.2 °C (Variopin and MT/T versions only)
  • Automatic temperature compensation
  • Sensor monitoring: detects broken glass, broken cable and dirty glass membrane
  • Calibration data stored in the electronics – calibrate before installation
  • Calibration timer and calibration logbook with the last 10 calibrations
  • Hour counter for operating hours
  • Galvanic isolation (DC 80 V / AC 42 V)
  • Protection rating IP67 (IP66 not with BNC)
  • Ambient temperature −10 to +60 °C, storage −10 to +85 °C
  • Dimensions approx. 121 mm (Variopin) or approx. 134 mm (N-connection), diameter 19.8 mm

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