302229 LRD 325-7

4 electrode screw-in conductivity cell, 1/2 inch NPT, for use with analogue monitors. With integrated temperature sensor, 7 m (23 ft) cable and watertight plug (IP68)
4电极旋入式电导池，1/2英寸NPT，用于模拟监测器。带集成温度传感器、7米（23英尺）电缆和防水插头（IP68）

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产品详情

Conductivity measuring cells to be connected to analog transmitters
All analog conductivity measuring cells are equipped with an integrated temperature compensation and cover all applications:
•In wastewater treatment plants, as flow measurement or in the pipeline: The right solution for every application
•Highest linearity by 4 electrode measuring cell
•High operational safety by robust design
You have the application - we have the application - we have the measuring cell! The unique 4 electrode measuring cell compensates for possible contamination and polarization effects. All measuring cells can be connected to the LF monitor LF 298 NTC (exception: TetraCon® 700).

TetraCon® 700 – Designed as an immersion encoder specifically for use in wastewater treatment plants
Conductivity measuring cell with 4 electrode system, integrated temperature sensor, anti-slip electrodes and breakage-resistance shaft; measuring range 10 µS/cm to 1000 mS/cm. Only as replacement armature for analog monitors of the Ecoline® or QuadroLine® series. Still available as digital version (IQ SENSOR NET System 181).

LRD 01 – for the installation into pipelines
Conductivity measuring cell as V4A model. With integrated temperature sensor (up to 130 °C), measuring range 0.001 to 200 µS/cm, pressure-resistant to 14 bar, 1/2 inch NPT screw thread.

LRD 325 – for the installation into pipelines
Conductivity measuring cell with integrated temperature sensor (up to 100 °C). Measuring range 1 µS/cm to 2 S/cm, pressure-resistant to 10 bar, 1/2 inch NPT screw thread.

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

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