Total hardness LHV series
Liquid indicator for automatic limit value monitoring of the total hardness (°dH) with LIMES analyzers. 4 limit levels, 750 ml.
Private customers can also find our range in our partner store Ampha-Analyse.
Reagent for Total hardness LHV series:
See also:
Reagent total hardness LHV series
Why is the total hardness measured with LHV?
The LHV series has been specially developed for total hardness measurement with analyzers from the LIMES series. The LIMES devices work purely as limit value monitors and continuously monitor whether a defined hardness limit value is exceeded or not reached.
Typical areas of application:
- Softening systems: Monitoring of the drain water after ion exchangers – immediate detection of resin breakthroughs.
- Boiler feed water: Ensure that the required residual hardness is maintained in order to avoid limescale deposits.
- Reverse osmosis systems: Continuous control of the permeate quality.
- Drinking water treatment: Automated quality assurance of water hardness.
The LIMES system offers a cost-effective solution for automatic hardness monitoring, which reliably issues an alarm as soon as a limit value is exceeded.
How does the Reagent work?
The LHV Reagents are liquid color reagents for automatic limit value monitoring with LIMES analyzers (LIMES Base, LIMES Plus). The device automatically takes a water sample, adds the Reagent and evaluates the color reaction.
In contrast to measuring range devices, the LIMES system does not provide exact measured values, but monitors whether the set limit value is adhered to. If the limit value is exceeded, an alarm is triggered – ideal for the reliable monitoring of water softening systems.
Advantages of the LHV series
- 4 limit value levels from 0.1 to 7 °dH
Suitable sensitivity for different applications
- Specially developed for LIMES analyzers
Optimum adjustment to the LIMES measuring principle
- Reliable limit value monitoring around the clock
Immediate alarm when limit values are exceeded
- 750 ml bottles – larger volume for longer service life
Less frequent indicator changes
- In-house production and individual batch calibration
Consistently high quality – Made in Germany
- 24 months shelf life from production
Cost-efficient stockpiling
Areas of application
Changing the indicator on the device
Only use indicator bottles with a capacity of 750 ml. They can be changed directly on the LIMES analyzer without tools.
Procedure
- Deactivate automatic mode on the device.
- Remove the empty or old indicator bottle.
- Insert a new bottle – absorb any drips.
- Activate automatic mode again.
- Ensure that Reagent enters the measuring chamber free of bubbles.
Important notes
- Check the expiration date on the bottle before use – only use Reagent that has not expired.
- When changing to a different limit value, the device must be reconfigured accordingly.
- If you have any questions about the configuration, please contact our technical support.
Limit values and measuring ranges
| Reagent | Limit value (°dH) | Measuring range (°dH) | Item no. (1x 750 ml) | Item no. (4x 750 ml) |
|---|---|---|---|---|
| LHV-0.1 | 0,1 | 0,01 – 0,18 | 32-074135 | 32-474135 |
| LHV-0.5 | 0,5 | 0,05 – 0,90 | 32-074165 | 32-474165 |
| LHV-3 | 3 | 0,30 – 5,30 | 32-074195 | 32-474195 |
| LHV-7 | 7 | 0,70 – 10,00 | 32-074210 | 32-474210 |
The LIMES devices work as limit value monitors. The specified measuring range describes the range in which the device detects a color reaction. The primary function is to reliably monitor whether the limit value is observed.
1 °dH = 17.8 ppm CaCO₃ = 1.78 °f (French degrees of hardness) = 1.25 °e (English degrees of hardness).
What to do if measured values are out of range?
Limit value set too low
Change to an Reagent with a higher limit value (e.g. from LHV-0.1 to LHV-0.5). The device must be reconfigured accordingly.
Limit value set too high
Change to a Reagent with a lower limit value for more sensitive monitoring.
Specifications at a glance
| Property | Value |
|---|---|
| Parameters | Total hardness (water hardness) |
| Series | LHV (LIMES-Haerte method) |
| Method | Colorimetric (photometric evaluation) |
| Operating mode | Limit value monitoring |
| Base unit | °dH (German degrees of hardness) |
| Available limit values | 0.1 / 0.5 / 3 / 7 °dH |
| Number of variants | 4 limit levels |
| Container size | 750 ml single bottle |
| Value pack | 4 × 750 ml |
| Shelf life | 24 months from date of manufacture |
| Manufacturer | RLS Wacon analytics GmbH, Hildesheim |
Compatible devices
| Device | Operating mode | Status |
|---|---|---|
| LIMES Base | Limit value | Active |
| LIMES Plus | Limit value | Active |
Storage conditions
Store in a cool, dry and dark place. Do not freeze. Protect from direct sunlight.
Shelf life: 24 months from date of manufacture (see label on the bottle). Use as soon as possible after opening.
Quality control
All Reagents are manufactured in-house at RLS Wacon according to strict quality standards. Each batch is individually calibrated and tested. Production is carried out exclusively with high-quality raw materials according to our own recipe – Made in Germany.
Additional information
| Limit value | 0,1, 0,5, 3, 7 |
|---|---|
| Product category | Indicator |
| Packaging | 1x 750 ml, 4x 750 ml |
