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291230 Oxi 298 NTC

291230	Oxi 298 NTC

298 NTC

WTW 291230
Monitor for direct connection of analogue oxygen sensors, with 2 analog and relay outputs, Modbus, 115V/230V and NTC 用于直接连接模拟氧传感器的监测器,具有2个模拟和继电器输出、Modbus、115V/230V和NTC

Analog controller for oxygen measurement
Excellent price/performance ratio - analog field monitor for the most varied applications in online oxygen measurement:
•User friendly and effective by easy handling
•Safe operation thanks to galvanically isolated outputs
•Reliable measurements by compressed air compensation and complete sensor monitoring
The Oxi 298 is an economical and metrologically flexible solution for use in the field. Galvanically isolated inputs and outputs are just as much standard as the complete function monitoring of the monitor and the connected sensor.

The connected oxygen sensor is continuously monitored for its function. In case of a defective membrane or in case of a used electrolyte, message is displayed and sent via the MODBUS interface.

Model

pH 298

Oxi 298

LF 298

Cl 298

Order No.

191230, 191232, 191234

291230, 291234

391230, 391234

801254

*) Please note: The permitted operating voltage of the sensor can vary considerably

Parameter

pH/ORP

Oxygen

Conductivity

Chlorine, elektrochemical

Measuring Range

-2 … 16 pH
-2000 … +2000 mV

0 … 20 mg/l
0 … 200 %

0 … 500 mS/cm, different measuring ranges adjustabel

0 … 2 mg/l

Temperature Measurement *)

-10 … 130 °C
NTC or Pt1000
or Pt100

-10 … 130 °C
NTC or Pt1000

-10 … 130 °C
Pt1000

Temperature Compensation

Automatically via temperature measurement in the sensor or via manual input

Relays

2 x switching contacts, change-over, max. 250 VAC / 5 A

Current Outputs

2 x 0(4) … 20 mA

Digital Interface

Modbus / RS485

USB (for configuration, calibration, data recording)

Display

OLED (128 x 64 pixel) with plain text menue

Data Logger

Integrated with real time clock for 4000 datasets, storable via USB, grafical display

Electric Supply

100 … 240 V AC or 18 … 36 V DC

Ambient Conditions

Operational temperature: -10 … 55 °C

Housing Material

Cast Aluminium for wall mounting

Protection Rating

IP 65

Weight

2 kg

Warranty

2 years