Laboratory Conductivity Meter




  • بررسی و خرید
  • Description :

    • Measuring ranges from 0.000 µS/cm to 2000 mS/cm
    • 1.000 µS/cm ... >1000 mS/cm with one sensor
    • Records for QM documentation according to ISO 9000 and GLP
    • Calibrated analog recorder output, galvanically isolated
    • Sensoface: monitoring of the sensor and equipment
    • Automatic calibration with standard solutions
    • EMC according to NAMUR
    • RS-232 interface for computer and printer
    • Simultaneous display of two measurement values
    • Self-contained clock
    • Leak-proof membrane keyboard
    • Robust housing
    • Protection category IP 54
    • 3-year warranty

    specification :

    Equipment

    Meter with power cord, without sensor

    Ranges

    Cond: 0.000 ... 9.999 μS/cm; 00.00 ... 99.99 μS/cm; 000.0 ... 999.9 μS/cm;

    0.000 ... 9.999 mS/cm; 00.00 ... 99.99 mS/cm; 000.0 ... 999.9 mS/cm;

    0000 ... 2000 mS/cm; auto-ranging or manual preset  

    °C: –50.0 ... +150.0

    Display

    Alphanumer. 2 x 4-digit, 14-segment LED, character height 13 mm, measurement symbols:20 °C, 25 °C, μS/cm, mS/cm, %/K, °C, Time, 3 Sensoface icons inform on sensor and measuring equipment (GLP)

    Measuring cycle

    Approx. 1.5/sec

    Measuring frequencies

    Approx. 40 Hz to 2 kHz, automatic adjustment by conductance

    Resolution

    Up to 0.001 μS/cm

    Accuracy

    Cond: <0.5 % meas. value. ±2 counts °C: 0.3 K

    Reproducibility

    <0.1 % meas. val.

    Temperature compensation

    –50 ... +150 °C; Pt 1000/NTC 30 kOhm (autom. selection) or manual,

    Linear TC characteristic 0.00 ... +9.99 %/K, ref. temperature 20 °C/25 °C selectable

    Adm. cell constant

    0.001 ... 199.9 cm–, adjustable

    Sensor standardization

    Operating modes – Automatic by determining the cell constant with NaCl or KCl solution Calibration solutions: KCl 0.01 mol/l; 0.1 mol/l; 1 mol/l; NaCl 0.01 mol/l; 0.1 mol/l; saturated – Direct entry of cell constant

    Monitoring of sensor

    and equipment (GLP)

    Sensoface provides information:

    – for selection of 2-electrode sensors

    – on too great a difference between reference and measuring temperature

    – for handling of 4-electrode sensors

    – on clock memory loss

    – in case of irregular checking of measuring equipment

    – Optical display: good/average/poor

    Device self-test

    Test of measuring electronics including recorder output, segment and keypad test, RAM, EPROM, and EEPROM test during diagnostics, automatic short check at power-on

    GLP records (ISO 9000)

     

    Parameter settings, calibration, device diagnostics

    Recorder output

    Galvanically isolated (isolation voltage: 40 V DC, 20 V AC)

    Cond: 1 mV/μS · cm–!; 1 mV/mS · cm–!; °C: 10 mV/°C user-defined for printer control

    Interface

     

     

     

                                     

    RS 232 without control lines, galvanically isolated (isolation voltage: 40 V DC, 20 V AC), user-definable as printer or computer interface,Baud rate: 600 / 1200 / 2400 / 4800 / 9600   Data bits/parity: 7/Even, 7/Odd, 8/No

    Protocol: none, XON/XOFF

     Stop bits: 1

    Software

    Control of the Model ST 700 Laboratory Conductivity Meter is integrated in the automation software for lab meters “labworldsoft” for display and control of device functions for Version 4.0 or higher

    Clock

    Real-time clock with date, self-contained

    Calibration data storage

    Automatic storage of cell constant and calibration procedure with time and date stamp, self-contained

    Data retention

     

    Parameters, statistics, and factory settings: >10 years (EEPROM)

    Clock: reserve power >1 year (battery-backed)

    Protection against electrical shock

    Protective separation as defined in DIN 57100 / VDE 0100 Part 410 and DIN VDE 0106 Part 101, power supply against all other inputs and outputs, in accordance with the NAMUR recommendation “Extra-low voltage circuits with protective separation”

    EMC directive

    89/336/EEC

    Standards

    EN 61326 / VDE 0843 Part 20: 2002-3     

    Ambient temperature   Storage and transport temp

    0 ... +45 ؛C

    –20 ... +70 ؛C

    Power supply

    230 V –15 % +10 %, 48 ... 62 Hz, <10 VA, Option 363: 115 V AC

    Sensor connection

    The meter allows connection of any 2-electrode sensors with banana plug.Special diode plug for 4-electrode sensors

    Enclosure

    Glass-reinforced polyamide 12, stainless steel cover, IP 54 protection,

    prepared for connecting ZU 6954 attachable stand

    Dimensions (W x H x D)

    244 x 95 x 255 mm

    Weight

    Approx. 2 kg

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