Rika Sensor is a weather sensor manufacturer and environmental monitoring solution provider since 2010

RIKA SENSOR / DATA CENTER LIQUID COOLING

RK500-13LC
Liquid Cooling EC Sensor

Real-time conductivity monitoring for liquid cooling.

Discuss Your Configuration View Specifications

RK500-13LC Type A, 2-electrode conductivity sensor — Type A / 2-electrode

RK500-13LC Type B, 4-electrode conductivity sensor — Type B / 4-electrode

1 secondSpecified response time

4–20 mA + RS485Simultaneous outputs

7–30 VDCSupply voltage

Coolant condition can change during operation. Online electrical conductivity (EC) monitoring gives your team a continuous view of conductivity trends, adding useful information to liquid cooling maintenance decisions.

The RIKA RK500-13LC is designed for liquid cooling applications, with two electrode configurations, simultaneous analog and digital outputs, and installation options for different piping arrangements.

APPLICATION

Make conductivity part of your monitoring plan

Changes in conductivity can flag changes in coolant condition that deserve investigation. Review readings against the expected baseline for your coolant formulation and the operating limits specified for your equipment.

Conductivity is one part of coolant assessment. Use it alongside other relevant measurements and maintenance observations when deciding what action to take.

Conceptual liquid cooling loop connecting a CDU and server racks, with conductivity monitoring on a return-line bypass — Conceptual liquid cooling loop with conductivity monitoring on a return-line bypass.

PRODUCT FEATURES

Built for online monitoring

Continuous visibility

Follow conductivity changes as coolant circulates, with online measurement and a specified response time of 1 second. Use trends to prompt checks when readings move outside your system’s expected range.

Signal stability

Anti-polarization technology and electromagnetic isolation help support stable measurements in demanding equipment environments.

Straightforward integration

Simultaneous 4–20 mA and RS485 outputs connect to compatible monitoring equipment. The integrated design requires no external transmitter and operates from a 7–30 VDC supply.

SENSOR CONFIGURATIONS

Choose the range that fits your coolant

Select Type A or Type B according to the expected conductivity range and measurement requirements of your cooling loop.

Type A

2-electrode

Main material316L

Standard ranges0–20 / 0–200 / 0–2000 µS/cm

Specified accuracy±1% FS at 0–2000 µS/cm, 25°C

Type B

4-electrode

Main material316L + PEEK

Standard ranges0–5000 / 0–10000 µS/cm

Specified accuracy±1% FS at 0–10000 µS/cm, 25°C

A 0–20000 µS/cm range can be customized.

Accuracy values above retain the range and temperature conditions stated in specification V5.2.0. Confirm performance requirements for your selected range.

TECHNICAL DATA

Technical Specifications

Type A2-electrode

Main material	316L
Standard ranges (µS/cm)	0-20 0-200 0-2000
Specified accuracy	±1% FSAt 0-2000 µS/cm, 25°C

Type B4-electrode

Main material	316L + PEEK
Standard ranges (µS/cm)	0-5000 0-10000Custom: 0-20000 µS/cm
Specified accuracy	±1% FSAt 0-10000 µS/cm, 25°C

FS = full scale. Accuracy applies at the range and temperature shown above. Confirm the required accuracy for other selected ranges.

Shared Specifications

Electrical & Measurement

Supply voltage	7-30 VDC
Signal outputs	4-20 mA + RS485Simultaneous analog and digital outputs
Power consumption	<0.2 W
Response time	1 second
Conductivity resolution	1 µS/cm
Temperature compensation	Thermal resistance

Operating & Storage

Applicable media	Deionized water, PG25 and EG25
Operating temperature	0 to +60°C
Pressure resistance	1 MPa (10 bar)
Probe ingress protection	IP68
O-ring material	EPDM
Storage temperature	10 to 60°C
Storage humidity	20%-90% RH

Connection Options

Process Connections

G3/4	End-face seal
NPT3/4	Upper and lower threadsThread seal
50.5 chuck	Gasket seal

Cabling

Cable termination	M16 connector or direct cable
Cable length	5 m standardOther cable lengths can be customized

Specification V5.2.0. Confirm material compatibility for your exact coolant formulation.

INSTALLATION

Plan the installation for stable readings

Choose a stable flow location

Use a bypass pipe section for easier maintenance and select a location with stable flow. Vertical upward flow is preferred; suitable horizontal piping positions are also supported.

Keep the sensing area clear

Keep the sensing area free from trapped gas and deposits. Avoid high-point gas traps, low-point sediment zones, vertical downward flow and locations downstream of pressure-reducing sections.

For the M16 connector option, allow at least 70 mm of cable outlet clearance.

SPECIFY YOUR RK500-13LC

Tell Us About Your Cooling Loop

Share your coolant type and concentration, expected conductivity range, operating temperature and pressure, process connection, and controller input requirements. Include your preferred cable connection and length, if known.

Our team can help review a suitable Type A or Type B configuration for your project.

Contact RIKA SENSOR

E-Mail: info@rikasensor.com

After-sales Service: support@rikasensor.com

WhatsApp | WeChat +86 13367318895