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391230 LF 298 NTC

391230	LF 298 NTC

298 NTC

WTW 391230
Monitor for direct connection of analogue conductivity measuring cells, with 2 analog and relay outputs, Modbus,115V/230V and NTC 用于直接连接模拟电导率测量单元的监测器,具有2个模拟和继电器输出、Modbus、115V/230V和NTC

Analog controller to measure conductivity
User-friendly, analog field monitor - suitable for numerous conductivity measuring cells due to different measuring ranges and cell constants:
•For versatile applications with 7 selectabel measuring ranges
•connection of different measuring cells possible
•User-friendly operation thanks to clear menu structure
The LF 298 is an economical and metrologically flexible solution for use in the field. Galvanically isolated outputs are just as much standard as a complete function monitoring of the monitor and the connected sensor.

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