Which Calibration Option Is Right for Your WatchmanOne or SenseAnywhere System?

The WatchmanOne System and SenseAnywhere System are widely used real-time monitoring solutions that help food production sites to maintain product quality, meet regulatory requirements, and reduce operational risks.

Through continuous monitoring, automated alerts, and secure data capture, these systems provide the visibility and traceability needed to support effective quality management.

For sites using either system, there are several calibration options available. This article provides guidance to help you select the most appropriate approach for your site.

How Often Should WatchmanOne and SenseAnywhere Systems Be Calibrated?

The most appropriate approach will depend on your site’s audit requirements, the level of risk associated with the process being monitored, and the value of the stock being protected.

For some sites, the system may be used simply for temperature and humidity monitoring to support quality records or data collection. If there is no direct food safety risk, calibration may be required less frequently, or sites may choose to carry out internal verification checks every few years.

However, for high-care factories or storage facilities with high-value stock at risk, annual calibration is strongly recommended, even if it is not a specific audit requirement.

Option 1: On-Site Calibration (Engineer Visit)

With on-site calibration, a qualified Klipspringer engineer visits your facility and calibrates your sensors in their installed location. This approach provides a convenient solution that ensures audit-readiness without disrupting your operations.

Best for: High risk environments, minimal disruptions, audit-critical operations.

Key Benefits Considerations Typical Use Cases Costs
  • Minimal disruption: no need to remove sensors or interrupt monitoring.
  • Fully managed: handled end-to-end by a specialist engineer.
  • Audit-ready: UKAS-traceable certification provided.
  • Reduced handling risk: no damage or loss during transit.
  • Higher upfront cost compared to other methods.
  • Requires scheduling and site access.
  • Typically calibrated at a single temperature point at the ambient temperature of the sensor.
  • Large food manufacturing sites.
  • Multi-zone cold storage facilities.
  • Sites with strict audit or customer requirements.
 £120-£170 per sensor.

Option 2: Calibrated Reference Checks

This approach involves using a calibrated reference sensor to verify the accuracy of your monitoring probes. Instead of removing equipment or arranging a site visit, your team can complete checks internally by comparing readings from the reference device against those from the sensors. This is a cost-effective calibration option that reduces disruption to your operations.

Best for: Sites with robust internal processes that require flexibility and a cost-effective approach.

Key Benefits Considerations Typical Use Cases Costs
  • Cost-effective: no engineer visit required.
  • Flexible scheduling: perform checks at a time that suits production.
  • No downtime: sensors remain fixed in place.
  • Empowers internal teams.
  • Requires a robust internal procedure.
  • Staff need training and consistency.
  • May not fully replace formal calibration for some auditing bodies.
  • Sites with technical or QA-led teams.
  • Lower-risk storage environments.
  • One off cost of £185 for the additional sensor. No cost if you already have a spare sensor or choose to use an existing reference probe.
  • £100 UKAS calibration for reference sensor. No additional cost if using existing reference probe.
  • Cost of QA supervisor's labour. Approx 10-15 minutes per sensor.

Option 3: Return to Klipspringer Laboratory for Calibration

This method involves returning sensors to Klipspringer for calibration, typically in batches. Sensors are calibrated in a UKAS-controlled laboratory environment, allowing testing at multiple temperature points. This approach ensures you have easy access to certification records and is a cost-effective option, particularly for larger operations.

Best for: Planned equipment rotation and sites requiring high-accuracy UKAS calibration, with multi-point testing completed in a controlled laboratory environment rather than ambient on-site conditions.

Key Benefits Considerations Typical Use Cases Costs
  • Cost-efficient: especially for larger systems.
  • Highly controlled environment: laboratory-based calibration.
  • Multi-temperature point calibration: at specific temperatures i.e. -18 and 5°C.
  • Clear certification records.
  • Requires temporary removal of sensors.
  • Sites need spares or rotation planning.
  • Slight operational complexity.
  • Businesses with spare probes/ loggers available.
  • Operations comfortable with planned rotation.
  • High accuracy calibration needed.
  • £75-100 per sensor, depending on quantity and number of test points.

Option 4: Hybrid Approach

  • On-Site Calibration (Engineer Visit): used for critical sensors.
  • Calibrated Reference Checks: completed throughout the year.
  • Return to Klipspringer Laboratory for Calibration: used for non-critical, spare equipment or reference SenseAnywhere / WatchmanOne sensors.

Ultimately, the best calibration strategy is the one that reflects the needs of your site, helping you to maintain accurate monitoring, meet audit expectations, and keep operations running smoothly.

If you would like to learn more about SenseAnywhere, WatchmanOne, or Klipspringer’s Calibration Services, contact our team on 01473 461 800 or email sales@klipspringer.com. Alternatively, complete the form below.

If you would like to learn more about SenseAnywhere, WatchmanOne, or Klipspringer’s Calibration Services, share your contact details below.