Seawater leak detection is one of the post-condensation water quality management processes that are performed for power station boilers and similar facilities. Damage to the ion exchange resin, which deionizes the supplied water, is also monitored during this process, and both of these applications are executed by a conductivity analyzer.

The above illustration shows where meters are used in the boiler water quality management process.

In the measurement point shown in the figure, two different signal ranges are needed for deionized water management and seawater leak detection. The SC402 can simultaneously generate output signals for two different ranges, meaning that a single unit can perform deionized water management concurrently with seawater leak detection.
Other applications for this conductivity analyzer include the management of deionized boiler water.

-	Detects seawater leakage and ion exchange resin damage
-	Reduces operating cost

Measurement system
4-wire conductivity system
Converter
	SC402G-1-☐-E
Sensor
	SC4A(J)-S-AD-09-002-☐☐-T1/PS
General Specifications
SC402G 4-wire Conductivity Converter
	Measuring range (at process temperature; C: cell constant)
	[Conductivity]	Minimum: 1 µS x C (underrange: 0.000 µS/cm)
		Maximum: 200 mS x C (overrange: 1999 mS/cm)
	[Resistivity]	Minimum: 0.005 kΩ/C (underrange: 0.000 kΩ·cm)
		Maximum: 999 MΩ·cm
	[Temperature]	Pt1000: -20 to +250°C
	Output setting range
	[Conductivity]	Minimum: 0.010 µS/cm
		Maximum: 1999 mS/cm
	[Resistivity]	Minimum: 0.001 kΩ·cm
		Maximum: 999 MΩ·cm
	[Temperature]	Min. span: 25°C; Max. span: 250 °C
	Output signal:	two outputs of 0-20 or 4-20 mA DC
	Construction:	for outdoor installation, IP65, NEMA 4X waterproof
	Ambient operating temperature:	-10 to +55 °C
	Power supply voltage:	100 V AC ±15 %, 50/60 Hz
		115 V AC ±15 %, 50/60 Hz
		230 V AC ±15 %, 50/60 Hz
	Power consumption:	15 VA maximum
SC4A(J) Conductivity Sensor
	Electrode system:	two-electrode system
	Cell constant:	0.02 cm-1
	Measuring range:	0.05 - 200 µS
	Temperature range:	0 - 110°C

	Wetted material:	SUS316L, PEEK (polyether ether ketone) /PS Adapter (option code of SC4A(J))
	Material:	SUS316L
	Operating pressure:	1 MPa maximum (depends on the SC4A(J) Sensor)

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