What is the p-value measured for?

The p-value (also acid capacity up to pH 8.2 or m-value/alkalinity) describes the concentration of hydroxide and carbonate ions in the water. It is a decisive parameter in boiler water and cooling water chemistry:

• Boiler water: The p-value is a key parameter for correct alkalization. Too low values lead to corrosion, too high values can cause foaming and overflow problems.
• Steam and condensate systems: Monitoring the p-value ensures that the alkalization remains in the optimum range.
• Cooling water systems: The p-value influences the corrosion and limescale separation behavior.
• Industrial process water: control of water chemistry in closed circuits.

How does the Reagent work?

The P25 Reagents are liquid color reagents for fully automated p-value determination with the SYCON P analyzer. The device automatically takes a water sample, precisely doses the Reagent and measures the resulting coloration photometrically.

Two measuring ranges are available: P25-5 for the low range (0.2-5.0 mmol/l) and P25-20 for higher concentrations (0.8-20.0 mmol/l).

Advantages of the P25 series

• Two measuring ranges: P25-5 (0.2-5 mmol/l) and P25-20 (0.8-20 mmol/l)

  Precise measurement over a wide concentration range

• Fully automatic measurement with the SYCON P

  Continuous 24/7 monitoring of boiler water chemistry

• High-quality raw materials and our own recipe

  Manufactured by RLS Wacon – Made in Germany

• Single batch calibration

  Consistently high precision with every delivery

• Available as single bottle (500 ml) and value pack (4 × 500 ml)

  Economical container sizes for every need

• 24 months shelf life

  Cost-efficient stockpiling

Der Beitrag p-value P25 series erschien zuerst auf RLS Wacon analytics.

Why is certified hardness monitoring required in the boiler house?

Steam boiler systems place the highest demands on the quality of the feed water. Even the smallest amounts of residual hardness can lead to limescale deposits on the heating surfaces – resulting in overheating, loss of performance and, in the worst case, boiler damage. VdTÜV Code of Practice WÜV 100 therefore requires continuous, automated monitoring of water hardness using certified devices – including the option of 72-hour unattended operation (BOB).

What is the SYCON BoB?

The SYCON BoB from RLS Wacon is a fully automatic online analyzer for monitoring the residual hardness in boiler feed water and returning condensate. It is certified in accordance with VdTÜV data sheet WÜV 100 and therefore fulfills the requirement for operation without supervision (BOB) for 72 hours.

The device is based on the proven SYCON platform, but is specially optimized for use in steam boilers: Pre-configured relays, an access code to protect against incorrect parameterization, a BOB probe for level monitoring of the Reagent and a shortened maintenance interval ensure maximum operational reliability.

How does the SYCON BoB work?

The SYCON BoB works according to the colorimetric titration method. A water sample is automatically fed into the measuring chamber and the Reagent (H25-0.05 or H25-0.1) is added step by step. An optical sensor detects the color change and calculates the residual hardness of the water.

The integrated BOB sensor continuously monitors the fill level of the indicator bottle. As soon as the remaining content is sufficient for less than 72 hours of operation (approx. 12 % fill level), a BOB message is issued via relay 2 and the display. This ensures that the indicator supply is replenished in good time.

The analysis time is approx. 3 minutes with an indicator consumption of only 0.05 ml per analysis. Up to 10,000 analyses are possible with a 500 ml bottle.

Special features compared to the other SYCON models

Advantages of the SYCON BoB

• TÜV-certified according to VdTÜV data sheet WÜV 100

  Meets the legal requirements for the unattended operation of steam boiler systems

• 72-hour BOB operation with fill level monitoring

  The BOB probe signals in good time when the indicator supply needs to be replenished – can be extended to up to 144 hours with a longer measuring interval

• Access code to protect against incorrect parameterization

  Locks access to critical settings during unattended operation

• Preconfigured relays for standardized installation

  Limit value, BOB message, device fault, analysis active – Terminal diagram can be created in advance

• RS485 interface with Modbus RTU

  Integration into the boiler control system and higher-level control systems

• Analog output 0/4-20 mA

  Direct transmission of measured values to the system controller

• Robust housing (IP54, IK08)

  Suitable for the harsh environmental conditions in the boiler house

• Self-calibrating full color sensor

  No manual calibration – automatic compensation for ambient light, contamination and turbidity

• Very low indicator consumption

  0.05 ml per analysis – up to 10,000 analyses per 500 ml bottle

Der Beitrag SYCON BoB erschien zuerst auf RLS Wacon analytics.