Conductivity Measurement Instruments
Conductivity sensors and transmitters for hygienic process monitoring, CIP control, phase separation and utility applications. This page consolidates technical reference data, model configurations and Tetra Pak Part Numbers for conductivity-related instruments.
Conductivity measurement for hygienic process control
Conductivity is widely used in food and beverage processing to monitor CIP concentration, distinguish product from water, verify phase separation and supervise utility or effluent streams. Correct instrument selection depends on process connection, output type, temperature requirements and the exact transmitter or sensor configuration.
The tables below preserve the visible relationships between denomination, connection type, optional features and Tetra Pak Part Numbers from the supplied reference screenshots.
Main conductivity product groups
The source page combines compact and remote transmitters, IO-Link sensors, Memosens sensors and hygienic connection variants.
LDL200 IO-Link
Real-time temperature compensated conductivity sensing with 4–20 mA and IO-Link.
CLD134 Compact
Compact hygienic transmitter variants with multiple connection and output combinations.
CLD134 Remote
Remote transmitter configurations with DIN, Clamp USA and Varivent N connections.
CLD18 Compact
Compact hygienic conductivity transmitters for DIN, Clamp, SMS and Varivent connections.
CLS82D
Memosens conductivity sensor for utility and effluent applications.
Connections & Housings
Reference sections for adapters and Varivent Varinline compatible inline housings.
Applications and technical benefits
LDL200
The LDL200 is described as an IO-Link plug-and-play, real-time temperature compensated conductivity sensor for the food industry. It is used for product monitoring, CIP control, phase separation, alkali and acid concentration control and, with IO-Link, conductivity plus temperature measurement.
- Measuring range 100 µS/cm to 1000 mS/cm
- One 4–20 mA analogue output with IO-Link
- PEEK sensor, wetted part, with stainless steel integral housing
- IP69K protection with M12 cable connection
- Measuring accuracy 2 % or MW ± 25 µS/cm
- IO-Link plug & play commissioning
- Process temperature -25...100 C; (< 1 h: 150) suitable for CIP and SIP
- Repeatability 1 % MW ± 25 µS/cm
- Integrated temperature measurement sensor
CLD Series
The CLD transmitters are described for conductivity and concentration measurement using inductive sensors in food-industry applications, including product monitoring, CIP control, phase separation and alkali/acid concentration control.
- Stainless steel transmitter housing
- Sensor made of highly resistant plastic (PEEK)
- Sterilisable sensor
- Extensive self-monitoring functions
- Insensitive to polarisation and soiling
- Sensor versions for process connections used in hygienic applications
- Large two-line display for measured value and temperature
- Standard version extendable by function extension with remote measuring range switching
CLD134
- EHEDG approval
- Hygienic design
- Durable protected sensor
- Temperature compensation response time t90 < 26 s
CLD18
- EHEDG/3A approval
- Durable
- Temperature compensation response time t90 < 50 s
- Cost effective
- Compact
CLS82D
The CLS82D is a conductivity meter used for utilities and effluent applications including wastewater, for example phase separation.
- Used together with the Liquiline CM44x transmitter series
- Broad measurement range
- Hygienic design certified by EHEDG and 3-A
- Absolute loop safety through Memosens and electrode connection surveillance
- Sterilizable and autoclavable
How to identify the correct conductivity configuration
Because several models share similar names, the connection, power/output configuration and optional columns must be checked together with the Part Number.
Confirm the family
Identify LDL200, CLD134 Compact, CLD134 Remote, CLD18 Compact or CLS82D.
Match the connection
Check DIN, SMS, Clamp, Clamp USA or Varivent N, including connection-specific dimensions where shown.
Verify output options
For CLD134, preserve Multi range switch and Temp output values because they distinguish otherwise similar variants.
Tetra Pak Part Number reference
The following tables reproduce the visible model-to-configuration relationships from the supplied screenshots. Blank connector/housing rows are not assigned invented Part Numbers.
LDL200 IO-Link
Conductivity Sensor| Description | Denomination | Tetra Pak Part No |
|---|---|---|
|
LDL200
Connection: G1 Aseptoflex Electrical connection: 1xM12 plug 4-20mA + IO-Link |
LDL200 G1A IO-Link | 70000139810 |
CLD134 Compact
Compact Transmitter| Description | Denomination | A | B | C | Multi range switch | Temp output | Tetra Pak Part No |
|---|---|---|---|---|---|---|---|
|
DIN union
Cable gland: M20x1.5 Connection: Dairy fitting DN50 DIN 11851 |
CLD134 DN50 4-20mA 230V AC | 244 | 78.5 | 92 | No | No | 90510-2608 |
| CLD134 DN50 4-20mA 24V AC/DC | 244 | 78.5 | 92 | No | No | 90529-5625 | |
|
SMS union
Cable gland: M20x1.5 Connection: Dairy fitting SMS 51 |
CLD134 SMS51 4-20mA 24V AC/DC | 244 | 78.5 | 84 | No | No | 90511-0008 |
|
Clamp
Cable gland: M20x1.5 Connection: Clamp 51, ISO2852 |
CLD134 ISO CI51 2x(4-20mA) 24V AC/DC | 250.5 | 78.5 | 64.7 | No | Yes | 90600-1621 |
| CLD134 ISO CI51 4-20mA 24V AC/DC | 250.5 | 78.5 | 64.7 | No | Yes | 90522-1566 | |
| CLD134 ISO CI51 4-20mA 24V AC/DC | 250.5 | 78.5 | 64.7 | No | Yes | 90512-1097 |
CLD134 Remote
Remote Transmitter| Description | Denomination | A | B | C | D | Multi range switch | Temp output | Tetra Pak Part No |
|---|---|---|---|---|---|---|---|---|
|
DIN union
Cable gland: M20x1.5 Connection: Dairy fitting DN50 DIN 11851 |
CLD134 DIN50 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | 92 | No | No | 90519-8402 |
| CLD134 DIN50 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | 92 | No | Yes | 90529-5626 | |
|
Clamp
Cable gland: M20x1.5 Connection: Clamp 51, ISO 2852 |
CLD134 CI51 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | - | Yes | Yes | 90511-4904 |
| CLD134 CI51 4-20mA 24V AC/DC | 207 | 142 | 78.5 | - | Yes | No | 90511-4906 | |
| CLD134 ISO CI51 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | - | No | Yes | 90503-8321 | |
| CLD134 ISO CI51 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | - | Yes | Yes | 90526-5954 | |
|
Clamp USA
Cable gland: NPT 1/2" Connection: Clamp 2" |
CLD134 ISO CI51 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | - | No | Yes | 90525-1654 |
| CLD134 ISO CI51 2x(4-20mA) 24V AC/DC | 207 | 142 | 78.5 | - | No | Yes | 90529-5651 | |
|
Varivent N
Cable gland: M20x1.5 Connection: Varivent N |
CLD134 VARIVENT 2x(4-20mA) 24V AC/DC | 207 | 142 | 36.5 | - | Yes | Yes | 90511-4905 |
CLD18 Compact
Compact Conductivity Transmitter| Description | Denomination | Tetra Pak Part No |
|---|---|---|
|
DIN union
Connection: Dairy fitting DN50 DIN 11851 SS housing IP69K NEMA6P |
CLD18 DN50 DIN11851 SS Housing | 90522-8236 |
|
Clamp
Connection: Clamp 51, ISO 2852 SS housing IP69K NEMA6P |
CLD18 Tri-Cl.2 inch, SS house | 90520-0531 |
|
SMS union
Connection: Dairy fitting SMS51 SS housing IP69K NEMA6P |
CLD18 SMS 2 inch, SS house | 90520-0533 |
|
Varivent N
Connection: Varivent N SS housing IP69K NEMA6P |
CLD18 Varivent N DN40-125, SS house | 90520-0532 |
CLS82D
Conductivity Sensor| Description | Denomination | Tetra Pak Part No |
|---|---|---|
|
CLS82D
1 uS/cm–500 mS/cm Connection: G1" |
Sensor, CLS82D PG 13.5 Pt1000 | 70000196668 |
Connectors and adapters for SI6600/SI64700/SI6800
No visible Part No in supplied screenshot| Description | Denomination | Tetra Pak Part No |
|---|---|---|
|
For LDL200
Please see Aseptoflex adapters on page: "Flow/Accessories" |
— | — |
Inline instrument housings Varivent Varinline compatible
No visible Part No in supplied screenshot| Description | Denomination | Tetra Pak Part No |
|---|---|---|
|
Housing unit
Go to "Integration components/Other Components/Inline housing". |
— | — |
Typical conductivity measurement applications
Conductivity measurement is especially useful where fast process-state changes need to be identified without direct product sampling.
CIP concentration control
Monitoring alkali and acid concentration during cleaning cycles and helping distinguish rinse water from cleaning media.
Product / water separation
Detecting phase transitions in pipelines to reduce product loss and support controlled routing.
Utilities & effluent
Conductivity measurement in process water, wastewater and utility streams.
Dairy processing
Process monitoring in hygienic dairy applications where connection design and cleanability are important.
Beverage processing
Inline conductivity monitoring for phase separation, product routing and CIP supervision.
Automation integration
4–20 mA, IO-Link and transmitter options support integration with process control systems.
Conductivity instrument identification and sourcing
Why can identical CLD134 denominations have different Part Numbers?
The screenshots show variants distinguished by configuration fields such as multi-range switch, temperature output, connection type and power/output arrangement. The Part Number should always be checked together with those fields.
Can LGN Group identify a replacement from a Tetra Pak Part Number?
Yes. A visible Tetra Pak Part Number, complete denomination and installed model are the most useful starting references for technical identification and sourcing support.
Are blank adapter and housing rows assigned Part Numbers here?
No. Where the supplied screenshot did not display a Part Number, this page leaves the field blank rather than inventing an OEM reference.
What information should be sent with an inquiry?
Send model, Part Number, denomination, process connection, output or power configuration and a nameplate/photo when available.
Need help identifying a conductivity sensor or transmitter?
Send the Tetra Pak Part Number, model, denomination and available process details. LGN Group can support technical identification and sourcing of the correct replacement configuration.