Knick 

Knick
Laboratory Conductivity Meter 703

Knick  Laboratory Conductivity Meter 703
The 703 Laboratory Conductivity Meter operates either with 4-electrode or 2-electrode sensors. The measuring input switches is automatically to the appropriate operating mode. Temperature compensation is performed automatically using a Pt 1000 / NTC 30 kOhm temperature probe or alterratively manually.
Via the standard RS232 interface the data can be processed by a computer. Even direct output to a printer is no problem. Records of the parameter setting, calibration and device diagnostics can be output directly to a printer. A comprehensive GLP-compatible documentation is given by the press of a key.
The meter automatically selects the display range with the greatest possible resolution. Naturally, the desired display range can also be manually specified. The large, bright 14-segment LED display for alphanumeric characters allows simultaneous readout of two measured values, e.g. conductivity and temperature.
  • Sensor standardization (operating modes):
  • Automatically by determining the cell constant with NaCl or KCl solution.
  • Calibration solution: 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 measuring equipment (GLP): by Sensoface®.
  • 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 check: Parameter settings, calibration, device diagnostics (ISO 9000).
  • Display: alphanumeric LED, 13 mm high.
  • Supplied without accessories.
Measuring ranges:LF: 0.000 to 9.999 µS / cm
00.00 to 99.99 µS / cm
000.0 to 999.9 µS / cm
0.000 to 9.999 mS / cm
00.00 to 99.99 mS / cm
000.0 to 999.9 mS / cm
000.0 to 9999 mS / cm
°C: - 50 to + 150
Measurement error:LF: < 0.5 % of measured value ± 2 counts
°C: < 0.3 K
Measuring cycle:approx. 1.5 s
Measuring frequencies:approx. 40 Hz to 2 kHz, automatic adjustment by conductance
Resolution:up to 0.001 µS / cm
Reproducibility:< 0.1% of measured value
Temperature compensation:- 50 to + 150 °C, Pt 100 / Pt 1000 (autom. switchover) or manual, linear TC-characteristic 0.00 to 9.99 % K, reference temperature 20 / 25 °C selectable
Adm. cell constant:0.001 to 199.9 cm-1, adjustable
Analog output:galvanically isolated
LF: 1 mV / µS x cm-1, 1 mV / mS x cm-1
°C: 10 mV / °C
Remote interface:RS 232
Immunity to interference:acc. to EMC directive 89 / 336 / EWG and DIN EN 61326 / VDE 0843 Part 20: 1998-01 and DIN EN 31326 / A1 / VDE 0843 Part 20 / A1: 1999-05 and to NAMUR NE 21
Housing:glassfibre-reinforced PA 12, st.steel cover, IP 54 protection, ready for connection of stand ZU 6954
Dimensions (W x D x H):244 x 255 x 95 mm
Weight:approx. 2 kg
Mains supply:230 V, 48 to 62 Hz (115 V optional)
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 Laboratory conductivity meter 70315704603-1,638.00 Add product to Shopping Basket