INSTRAN Total Hardness Analyzer from Spain is designed to handle all kind of samples ranging from drinking water to waste water application. It incorporates laboratory measuring technique (Colorimetric Titration) into online analyzer with self-cleaning in each analysis to ensure the measurement is in high precision.
The unique design of INSTRAN Total Hardness Analyzer with syringe volume-controlled method ensures syringe will never contact with samples or reagents and thus prolong the shelf life of the syringe. Also due to the accuracy of the syringe system, the volume of the drop is 0.015ml, which is a important point in the titration method where the titrant reagent is added drop by drop making the analyzer requires very little maintenance and low reagents consumption but yet powerful and high in accuracy.
INSTRAN Total Hardness Analyser
Measuring Principle: Colorimetric Titration
- The Calcium complexes with the Erichrome Black-T to give a blue-violet colored complex.
- This blue-violet colored complex, when titrated by the addition with the EDTA titrant, is broken up as the calcium EDTA complex which is more stable and when excess EDTA is present the Erichrome Black-T – EDTA complex is formed which is a rose colored complex.
- Precise volume controlled of Sample, Reagent and Titrant reagents by syringe dispensing system ensure excellent accuracy and repeatability
Features
- Reliable, Exact and Fully Automatic Analysis Total Hardness
- Self Cleaning After Each Measurement
- Very low maintenance & operating cost
- Low reagent consumption
- Multi-Color Graphic Display
Applications
- Drinking Water
- Process Water
- Waste Water Treatment Plant
- Water Softening System Performance
- Boiler and Cooling Tower Feed Water
- Pool and Spa Water
Technical Specification
| Measurement Method | Colorimetric Titration Method |
| Measuring Range | 0 ~ 10, 0 ~ 20, 0 ~ 100, 0 ~ 200, 0 ~ 400 mg/L (ppm) as Total Hardness |
| Accuracy | +/- 2 % FS + 0.02 mg/L (ppm) |
| Resolution | 0.02 mg/L (ppm) |
| Power | 100 ~ 240 VAC, 50/60Hz, 200 Watts Max [Fuse Protection: 250V, 5A] |
| Dimension | 500 x 150 x 600 mm (L x W x H) |
| User Interface | Keypads with 4 Keys and 4 Indication LED |
| Display | Backlit, Graphic and Wide Screen Color |
| Output | 2 x Analogue Output 4 – 20mA, Max Load: 700 Ohms 2 x Digital Outputs |
| Input | 2 x Digital Inputs [Assigned to detect of lack of Sample or Reagents] 5 x Assignable Digital Inputs |
| Communication | Modbus RS485 (RTU / ASCII) |
| Relays | 4 x Assignable (Free Voltage) Relays with 3 Contacts (C, NO and NC) |
| Calibration | Automatic with Schedule Manual – Automatic On Demand |
| Sample Flow | 100 ml/min [Minimum] |
| Washing | Automatic after Each Measurement [Programmable with Sample, DI Water or Washing Solution (Hard Cleaning] |
| Dispensing System | Syringe Dispensing System with Fast Loop Sampling System [Prevent Syringe in contact with Sample or Reagents] made of Teflon High reliability Solenoid Valve which can handle particles of dimension up to 1.5mm diameter |
| Reactor | Small Volume Reaction Cuvette [12ml to 17 ml] with Drain Solenoid Valve able to handle particles, size up to 3mm diameter |
| Fluid System | Chemical Resistance Tubing made of Inert Material with direct connection without coupling |
| Operating Temp | -20 deg C ~ +65 deg C with Maximum RH at 95% Non-Condensing |
| Sample Temp | + 10 ~ 45 deg C |