Testomat Eco

Summary

Product identification

Testomat ECO® is an online analysis instrument for the automatic determination and monitoring of residual total hardness (water hardness) in water with a pH level above 4.

Intended use

The instrument is designed for automatic determination and monitoring of residual total hardness in water with a pH above 4. The required measuring range is determined by indicator selection and user programming.

Operating limits

• Water properties:
  • pH level above 4.
  • Heavy metal ions (iron above 0.5 mg/l, copper above 0.1 mg/l, aluminium above 0.1 mg/l) can influence color reaction.
  • CO₂ concentration above 20 mg/l may lead to erroneous evaluations.
• Operating pressure: 0.3 to 8 bar. A modification is available for operation between 0.3 to 1 bar.
• Measuring water temperature: 10 °C to 40 °C. For temperatures above 40 °C, a KCN type cooler should be installed.

Installation

• Install in a location protected against moisture, humidity, condensation, and splash water.
• Mount vertically and without mechanical stress, on a vibration-free site.
• Water inlet hose should be as short as possible (max. 5 m).
• Ensure sufficient space for opening the door.
• Mounting holes are provided for wall or switch cabinet installation.
• Water inlet connection should be directly after the water treatment plant and laid vertically upwards.
• An opaque plastic hose (6/4 x 1) is used for water inlet.
• Water outlet connection requires an outlet hose (internal diameter 12 mm) laid without backwater or siphoning.

Electrical

• Power supply: Connect to the specified mains voltage (24 V / 115 V / 230 V) indicated on the rating plate.
• Mains Filter: Recommended to protect against interference voltages.
• Connecting cables: Keep as short as possible and install separately from power cables.
• Relay outputs: Maximum electrical load capacity must not be exceeded (max. 4 A for mains output, max. 240 VAC, 4 A for limit value and alarm outputs).
• Inputs: Signal inputs "Stop" and "Water meter" require volt-free contacts. Do not connect external voltages.

Mechanical / hydraulic

• Water inlet connection: Standard plug connector for plastic hoses 6/4 x 1.
• Water outlet connection: Requires outlet hose with internal diameter 12 mm.
• Indicator bottle: 500 ml capacity is standard.
• Dosing pump: Precision piston-dosing pump.

Performance specifications

• Measurement: Residual total hardness (water hardness).
• pH range: Above 4.
• Display: Plain text display for menu-driven operation.
• Units: Freely selectable: °dH, °f, ppm CaCO₃, or mmol/l.
• Indicator storage: 500 ml indicator bottle.
• Analysis initiation:
  • Automatic interval operation (0-99 minutes interval pause).
  • Quantity-dependent via impulse water meter/turbine.
  • External analysis stop.
• Limit values: Two independent limit values with hysteresis (1, 2, or 3 bad analyses) and settable switch functions (two neutral change-over contacts).
• Outputs:
  • Fault message output (neutral change-over contact).
  • Current output 0/4 - 20 mA.
• Valve block modification: Available for water with pH < 4.0 (Art. No. 40018).

Indicators

Operating elements and display

• Display: 2-line text display for operating status and measured values.
• Limit value status indicators: Red/green LEDs for limit value 1 and 2.
• Alarm indicator: Red LED for malfunctions/errors.
• Analysis indicator: Yellow LED for current analysis.
• Function keys: Manual analysis, Standby, Acknowledge error, Program menu (M), Information (i).
• Programming keys: Cursor block for navigation and data entry.

Settings and data input

• Indicator and bottle size: Selectable within the BASIC PROGRAM menu. TH2005 and 500 ml bottle are factory set.
• Operating mode: Time-controlled, quantity control via water meter, or a combination.
• Time control: Interval pause settable from 0 to 99 minutes.
• Quantity control: Interval settable from 1 to 9999 litres.
• Water meter type: Selectable water meter constant (litre/impulse) or Imp/l. 100 litres/impulse is factory set.
• Quantity control / Time priority: Option to prioritize quantity or time control.
• Display unit: °dH, °f, ppm CaCO₃, and mmol/l can be selected. °dH is factory set.
• Flushing time: Settable in seconds (00 seconds preset).
• Limit values: Two limit values (LV1, LV2) can be programmed.
• Hysteresis: Suppression of bad analyses (1, 2, or 3) for LV1 and LV2. Default is 1.
• Switch functions for LV1/LV2: Duration, impulse, interval, two-point. Time for impulse and interval is settable (00m:10s preset).
• BOB operation: Operation without permanent supervision for steam boiler plants. Can be switched ON or OFF. Alarm message for low indicator level. Not possible with volume control.

Signal inputs/outputs

• Stop input: External analysis stop (normally closed or normally open).
• Water meter input: For quantity-dependent analysis triggering.
• Current interface: 0/4 - 20 mA, galvanically separated (from serial number 227474).
• +12 V output: For Hall sensor (turbine), max. 20 mA.
• Limit value outputs (LV1, LV2): Isolated relay outputs (normally closed, common, normally open), max. 240 VAC, 4 A.
• Alarm/Message output: Fault message output (neutral change-over contact), max. 240 VAC, 4 A.

Maintenance

• Regular visual inspection of hose connections, water connections, and instrument cleanliness.
• Ventilate indicator leads after switch-off and longer downtime.
• Repairs must be carried out by authorized service staff.

Technical data

See the official PDF for exact tabulated values.

Disclaimer

This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror