Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.
Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra | Philippopoulos s.a.

Total Dissolved Solids (TDS) Electrodes - SPECTORconnect | Gestra

GESTRA SPECTORconnect – Conductivity Electrodes for TDS Control

LRG 16-60, LRG 16-61, and LRG 17-60 are designed for continuous conductivity measurement in boiler water and TDS (Total Dissolved Solids) control in steam boilers and hot water systems. When paired with the LRR 1-60 controller, they provide continuous blowdown control. Integration with URS 60 / URS 61 enables use as conductivity limiters up to SIL 2 safety integrity level.

Measurement Principle

LRG 16-60 / 17-60 utilize a two-electrode conductivity measurement. The LRG 16-61 employs a four-electrode configuration, suitable for higher conductivity ranges. All models feature temperature compensation to 25°C via integrated Pt1000 sensor.

Technical Data

  • Connection: G1 A, EN ISO 228-1
  • LRG 16-60 / 16-61: PN40, 32 bar(g) at 238°C
  • LRG 17-60: PN63, 60 bar(g) at 275°C
  • Measuring range LRG 16-60 / 17-60: 0.5–6000 μS/cm
  • Measuring range LRG 16-61: 50–10,000 μS/cm
  • Lengths: 180/200 up to 1000 mm, depending on type
  • Power supply: 24 VDC ±20%
  • Communication: CANopen / CAN bus ISO 11898
  • Protection: IP65

Blowdown Control

The LRR 1-60 controller processes CAN telegrams from the electrode and actuates a modulating blowdown valve using PI 3-point stepping control. Features include MAX/MIN alarms, 4–20 mA process value output, and standby input for external valve closure command.

Installation

Minimum distance from boiler wall, flue tubes, and internal metal parts: approx. 30 mm for LRG 16-60 / 17-60 and 60 mm for LRG 16-61. Electrodes and measuring tubes must not be cut. Use shielded twisted-pair CAN cable for wiring.

Maintenance

Inspection includes checking for deposits on the measuring tip, verifying temperature compensation, seal integrity, CAN bus errors, and functional testing of the blowdown valve.

Description

Total dissolved solids (TDS) controls

During formation in the boiler steam leaves behind impurities, total dissolved solids (TDS). If left these impurities concentrate and could cause damage to your boiler.

In addition these solids build scale on the fire tubes and reduce the heat transfer. The effect is higher steam production costs.

Total dissolved solids controls measure the electrical conductivity of the boiler water which detects the level of total dissolved solids in your boiler.

Accurate control of total dissolved solids minimises blowdown, reduces the risk of boiler carryover, improves productivity and significantly reduces operating costs including fuel and chemical treatment.

Our solutions will help you to...

  • Reduce operating costs
  • Improve steam quality
  • Save energy

What are the features?

  • Compact design
  • Increased lifetime of your boiler

Safe and efficient monitoring of steam and hot water systems

For boiler operators of a steam system safety, reliability, availability and cost efficiency are the top priority, along with effective plant automation and visualisation for easy management.

GESTRA has developed SPECTORconnect a digital system that sends data in both directions, including voltage, temperature, limit values and error messages. 

This provides accurate monitoring and real-time feedback so you can effectively manage and monitor your boiler.