The Clack R7031-20K is a 110V deionization (DI) monitoring light designed to provide instant visual feedback on water quality using a 20K OHM Resilite sensor. This unit features a 1/2" MIP connection and signals green for acceptable DI output quality and red when resin regeneration or replacement is needed.
SPECIFICATIONS
R7031-20K DI Light Overview
Model Number
R7031-20K
Clack OEM part
Voltage
110V AC
Standard US power
Resistance Range
20K OHM
Resilite sensor
Connection Size
1/2" MIP
Male iron pipe thread
Indicator Type
Dual LED
Green and red lights
Application
DI Systems
Monitors resin quality
TECHNICAL DETAILS
Component Specifications
| Manufacturer | Clack Corporation |
| Part Number | R7031-20K |
| Electrical Rating | 110V AC, 60Hz |
| Sensor Type | 20K OHM Resilite conductivity sensor |
| Thread Connection | 1/2" Male Iron Pipe (MIP) |
| LED Indicators | Green (quality good), Red (below quality) |
| Housing Material | Durable UV-resistant plastic |
COMPATIBILITY & APPLICATIONS
Where This DI Light Works
The Clack R7031-20K is designed for deionization systems used in laboratory, aquarium, window cleaning, and spot-free rinse applications. It installs inline on DI resin tanks to monitor output conductivity and alerts operators when total dissolved solids (TDS) rise above acceptable levels. Compatible with standard 1/2" NPT fittings and most Clack softener and DI system configurations. The 20K OHM range is suited for moderate to high-purity applications where real-time resin exhaustion monitoring prevents downstream contamination or spotting.
💧 Pro Tip: Mount the DI light where it's easily visible during routine operation. A red light indicates resin exhaustion—regenerate or replace your DI cartridge promptly to maintain water quality and avoid costly equipment damage or product defects downstream.
