SC450G 4-Wire Conductivity/Resistivity Analyzer

Model SC450G
4-Wire Conductivity/Resistivity Analyzer

Product Information

SC450G 4-Wire Conductivity/Resistivity Analyzer

The EXAxt SC450G is designed to combine the superior functionality of the Yokogawa EXA series with the ease of use offered in pocket computers (PDA). Truly unique is the EXAxt 450 series in the Human Machine Interface (HMI). The high resolution graphical display and the touch screen operation make all information visible to the operator.

The SC450G offers the best accuracy in the industry by combining the conductivity measurement with advanced temperature compensation functionality, preloaded calibration standards and cell fouling monitoring.

The SC450G offers ultra pure water compensation for demineralised water (default: NaCl), for stream, condensate and boiler water analysis (cation conductivity, ammonia and morpholine conductivity). The SC450G also offers matrix compensation and output linearization for accurate analysis of strong acids and alkalis especially for the monitoring of ultra pure water in the pharmaceutical industry, the functionality of USP chapter 645, first published in USP23, is implemented.

		Bulletin for SC450G
		General Specification for SC450G
		General Specification for Conductivity Sensors
		User's Manual for SC450G

Selection Guide for Conductivity Analyzer

Click here to request a technical document for Conductivity Analyzers

Features

*	IP66/NEMA4X 1/2DIN enclosure for Field mounting and Panel mounting.
*	Unique HMI with menu structure and high resolution graphical display with touch screen.
*	Interactive display with choice out of 8 languages.
*	Trending display for up to 2 weeks.
*	On-screen logbooks store calibration data, configuration changes and events.
*	Advanced Process Temperature Compensation.
*	Cell fouling monitoring.
*	HART® Communications.
*	FM Class I, Div. 2 Group A, B, C and D. T6 for Ta -20 to 55℃.

Specifications

Input specification	Two or four electrode measurement with square wave excitation, using max. 60 m cable and cell constants from 0.005 to 50.0 cm^-1
Detection method	Frequency, read-pulse position and reference voltage are dynamically optimized.
Input ranges	Conductivity: 0.000 μS/cm to 2000 mS/cm Minimum: 1 μS/cm (underrange 0.000 μSx C). Maximum: 200 mS/cm (overrange 2000 mS x C). Resistivity: 0.0 Ω x cm to 1000 MΩ x cm Minimum: 5 Ω x cm (underrange 0 Ω/C). Maximum: 1 MΩ x cm (overrange 1000 MΩ/C). Temperature: Pt1000: -20 to 250℃ (0 to 500℉) Pt100 and Ni100: -20 to 200℃ (0 to 400℉) NTC 8k55: -10 to 120℃ (10 to 250℉) Pb36 NTC: -20 to 120℃ (0 to 250℉)
Transmission Signals	Two isolated outputs of 4 to 20 mA DC with common negative. Maximum load 600 Ω. Bi-directional HART digital communication, superimposed on mA 1 (4 to 20 mA) signal. Burn up (21.0 mA) or Burn down (3.6 mA) to signal failure accorded with NAMUR NE43.
Temperature compensation	Automatic or manual, for temperature ranges. Reference temp.: programmable from 0 to 100℃ or 30 to 210℉ (default 25℃).
Compensation algorithm	According IEC 60746-3 NaCl tables (default). Two independent user programmable temperature coefficients, from 0 to 3.5 %/℃ (℉) by adjustment or calibration. Matrix compensation: with conductivity function of concentration and temperature. Choice out of 13 preprogrammed matrixes.
Display	Graphical Quarter VGA (320 x 240 pixels) LCD with LED backlight and touchscreen.
Contact Outputs	Four SPDT relay contacts with display indicators. Contact outputs configurable for hysteresis and delay time.
Contact Input	Remote range switching to 10 times the programmed range.
Power Supply	85 to 265 V AC ±10 %, 47 to 63 Hz, maximum consumption 10 VA. 9.16 to 30 V DC ±15 %, maximum consumption 10 W.