• Feldmessumformer pH 298 - WTW
  • Feldmessumformer pH 298 - WTW
  • Feldmessumformer pH 298 - WTW

Field monitor pH 298 - WTW

  • SKU: 191230
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  • Description
    Analog controller for pH/ORP measurement
    Analog field monitor for the low and high ohms pH measurement - reliable by means of automatic temperature compensation for NTC, Pt100 or Pt1000:
    •Low and high ohm pH input to connect also external sensors
    •Reliable measurements by automatic temperature compensation with NTC, Pt100 or Pt1000
    •User-friendly operation by intuitive menu structure
    The pH 298 is an economical and metrologically flexible solution for use in the field. Consequent galvanic separation of all outputs.

    The pH 298 is equipped with a low and a high ohm signal input. Thus, the monitor not only can be operated with WTW SensoLyt® measuring probes/electrodes and WTW ProcessLine® electrodes. If the adapted probes are not equipped with an integrated NTC sensor, you can connect any NTC, Pt100/Pt1000 sensors to measure temperature and for automatic temperature compensation.
  • Specifications

    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

Downloads

pH/Oxi/Cond/Cl 298 (English)

Series 298 field monitors
Operating manual

pH/Oxi/Cond/Cl 298 (German)

Serie 298 Messumformer,
Bedienungsanleitung

Trinkwassersysteme

Brochure, German
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