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