SENSECA
Accessories - VNR series
Control units for SL model
The VNR21/22 control units are designed as interface for the SL series (conductive level probes). These electronic units are used to control liquids that have a minimum electrical conductivity of 1 µS.
The system is based on measurement of the conductivity of the liquid to be controlled and works with low potential and with alternating currents, in order to avoid the incrustation of the electrodes and/or perforation of the tank normally caused by the use of direct currents, which cause a galvanic action on materials. The contact of the electrode with the liquid under control determines the actuation of a relay inside the control unit and it is possible to drive any alarm system and/or actuator. By using multiple probes and multiple control units, appropriately connected, a system of dosage and safety can be made.
- One or two channel design
- 10-250 µS sensitivity range
- Changeover (SPDT)
Selected variant
Product description
The VNR21/22 control units are designed as interface for the SL series (conductive level probes). These electronic units are used to control liquids that have a minimum electrical conductivity of 1 µS.
The system is based on measurement of the conductivity of the liquid to be controlled and works with low potential and with alternating currents, in order to avoid the incrustation of the electrodes and/or perforation of the tank normally caused by the use of direct currents, which cause a galvanic action on materials. The contact of the electrode with the liquid under control determines the actuation of a relay inside the control unit and it is possible to drive any alarm system and/or actuator. By using multiple probes and multiple control units, appropriately connected, a system of dosage and safety can be made.
Add product as a new cart row
You already added this product. Choose whether to increase quantity on the existing row or add the product as a new row.
Welcome Jim Murray to OEM Demesne
A familiar face returns. Jim Murray joins OEM-Demesne as Chief Sales & Supplier Officer, bringing 26 years of industry leadership back to the business at a defining moment in the move to OEM Automatic.
Katko IsoSafe KSM Safety Switch
Katko has launched a significant upgrade to its IsoSafe KSM safety switch range (16–25A), built around the realities of modern installation work. The redesigned side-operated switch combines an
.png?as=1&iar=0&hash=32754F69BDE594727B35F2B8B9C1A3EC)
Wohner 60 Classic and Crossboard
Modular busbar systems that streamline power distribution, improve safety, and speed up panel builds.
Tekox Terminal Strips Safety Blocks and Porcelain Blocks
Great electrical installations don't fail because of the major components. They fail because of the small ones that didn't get enough attention.
It's easy to focus on the big-ticket items during specification — and let the terminal blocks become an afterthought. But inferior connection components have a habit of making themselves known over time. Loose connections, degraded insulation, premature failure. The kind of faults that are frustrating to trace and expensive to fix.
Tekox engineer their terminal strips, safety blocks, insulated strips, and porcelain blocks to the standards your installations deserve. Available now from Demesne Electrical — get in touch and we'll show you the range.
Conta-Clip Push-in PPVK Distribution Terminals
Conta-Clip PPVK push-in potential distribution terminals simplify control cabinet wiring with tool-free connections, compact DIN rail mounting, and reliable current distribution up to 41A.
.png?as=1&iar=0&hash=6DDD16B03C4B424998A14DE19FF641F1)
Electrical Protection in Energy Storage Systems (ESS): Keys to a Safe Installation
The PMX fuse holder range is compact, halogen-free, and manufactured in Europe for fast availability. Available in 10×38, 14×51, and 22×58 sizes with IEC, UL, and CSA approvals, they feature silver-plated contacts, IP20 touch-safe design, and optional blown fuse indicators — giving panel builders reliable, safe, and flexible protection.
