WTW - Pure water conductivity measuring cells LR 325/01 and LR 352/001

SKU: 301961

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Description
Conductivity of ultra pure water and low conducting solutions
Two electrode measuring cells with concentric electrodes of stainless steel and flow vessels made of glass or stainless steel for measurements of ultra pure water

- Precise measured values thanks to concentric electrodes without boundary fields
- Includes flow vessels to prevent wrong results due to carbon dioxide
- No polarization effects thanks to stainless steel electrodes
Ultrapure water conductivity cell with built-in temperature sensor and waterproof plug, cell constant K = 0.1 cm-1, glass flow-through vessel D01/T.
Trace conductivity cell with built-in temperature sensor, cable and waterproof plug, cell constant K = 0.01 cm-1, stainless steel flow-through vessel.

Specifications

Model		LRD 01	LRD 325	LR 325/01	LR 325/001	TetraCon^® 325	TetraCon^® DU/T
Order No.		302220, 302222	302225, 302229	301961	301962	301960, 301970, 301971	301252
Measuring principle		2 electrodes measuring cell	4 electrodes measuring cell	2 electrodes measuring cell		4 electrodes measuring cell
Measuring Range		0.001 µS/cm ... 200 µS/cm	1 µS/cm ... 2 S/cm	0.001 µS/cm ... 200 µS/cm	0.0001 µS/cm ... 30 µS/cm	1 µS/cm ... 2 S/cm
Cell constant		0.1 cm^-1, ±2%	0.475 cm^-1, ±1.5%	K = 0.1 cm^-1	K = 0.01 cm^-1	K = 0.475 cm^-1	K = 0.778 cm^-1
Resolution		Depends on measuring range
Temperature sensor		Integrated NTC
Temperature Measurement		0 °C ... +130 °C	0 °C ... +100 °C	-5 °C ... 80 °C			0 °C ... 60 °C
Maximum pressure		14 bar (at 20 °C)	10 bar (at 20 °C)	2 bar
Electrical Connection		Integrated PU connection cable with 7-pole screw plug (IP 65)		Integrated cable mit 8-pole plug			8-pole socket for cable KKDU 325
Mechanical	Shaft	Stainless steel 1.4571				Epoxy	POM
	Kable gland	Brass, nickel-plated		—	—	—	—
	Connection head	—	—	POM			—
	Electrodes	Stainless steel 1.4571	Graphite	Stainless steel 1.4571		Graphite
	Protection Rating	IP65		IP68 (Sensor and cable)			IP65 (when connected)
	Protection Rating	(when connected)	(Measuring cell until immersion length)	IP68 (Sensor and cable)			IP65 (when connected)
Weight (without cable)		Approx. 350 g	Approx. 300 g	Approx. 135 g	Approx. 280 g	Approx. 135 g	Approx. 170 g
Warranty		2 years on defects in quality according to § 10 terms of conditions