Hukseflux Worldwide Calibration Services User Guide
- June 3, 2024
- Hukseflux
Table of Contents
Worldwide Calibration Services
User Guide
Hukseflux
Thermal Sensors
Worldwide calibration services
Sensors must be recalibrated – Hukseflux services are at your disposal
Hukseflux is a leading manufacturer of heat flux sensors and pyranometers.
Such sensors are usually recalibrated every 2 years. Our calibration expertise
is at your disposal.
Introduction: requirements of ISO, IEC and WMO
Quality management systems such as ISO 9001 require regular calibration of all
traceable measuring instruments. At Hukseflux we recommend recalibration at
least every 2 years. IEC 61724-1, a standard covering PV system performance
monitoring, requires pyranometer calibration every 2 years. The WMO manual,
describing best practices in meteorological observations, requires the same.
Services: what we do
- perform accurate calibration of solar radiation, heat flux, and longwave radiation sensors
- work according to established standards
Why work with us
- well established and traceable calibration methods
- fast turnaround times
- including uncertainty evaluation
- calibration references for many brands and models of pyranometers, heat flux sensors and amplifiers
- calibration facilities in the EU, USA, Japan, China, Australia, Singapore and Brazil
Figure 1 calibration of all major pyranometer brands
Certificate
With its products or as part of calibration services, Hukseflux Delft issues
calibration certificates with content limited as per ISO / IEC 17025-7.8.1.3.
Such a certificate contains the calibration result, an uncertainty, a
description of the calibration procedure and the traceability. In case an
earlier certificate is supplied with the instrument, we include a reference in
our calibration certificate to this earlier certificate. As an option, a
certificate including name and contact information of the customer may be
ordered.
Figure 2 calibration certificate with each sensor documenting traceability and
uncertainty evaluation
Sensor calibration service capabilities
Table 1 Hukseflux calibration services
HUKSEFLUX CALIBRATION SERVICES
calibration Item| brand and model| calibration method|
comment
---|---|---|---
heat flux sensors (high flux)| Hukseflux SBG series
Medtherrn Schmidt Boelter and Gardon
type sensor| ISO TS 14934 Fire tests – calibration of heat flux meters – Part
3 secondary calibration method. Transfer calibration by comparison to a
secondary standard under a radiant source calibration may be performed at
multiple flux levels, also for one sensor. Calibration up to 1000 x 10′ W/m2|
Concerning heat flux sensors, Hukseflux is not an ISO/ IEC 17025 accredited
laboratory; users may need calibration of their local reference measurement
standard at an accredited laboratory for certified fire testing:
https://www.ri.se/en
Hukseflux’ calibration reference standard is calibrated up to 75 x 10′ W/m2
heat flux sensors (low flux)| Hukseflux HFP series| Hukseflux internal method
HFPC. This method is validated against ASTM C1130 Standard Practice for
Calibrating Thin Heat Flux Transducers|
pyranometers| Hukseflux LP, SR series
Kipp & Zonen CMP, SMP series| Pyranometers: conform ISO 9847:1992 Solar energy
– Calibration of field pyranometers by comparison to a reference pyranometer,
type IIc| Servicing and repair or desiccant replacement of other-than-
Hukseflux brands cannot be carried out by Hukseflux
pyrheliometers| Hukseflux DR series
Kipp & Zonen CH series| Pyrheliometers: laboratory developed method, based on
the same standard as for pyranometers. This laboratory-delveloped method is
validated against results obtained by ISO 9059:1990 Solar energy – Calibration
of field pyrheliometers by comparison to a reference pyrheliometer|
pyrgeometers| Hukseflux IR series| Hukseflux internal laboratory- developed
method IRC under a blackbody source relative to a reference traceable to WRR
For IR20: under outdoor clear sky conditions relative to a reference traceable
to WRR| There is no standard practice available from ISO or ASTM for
pyrgeometer calibration
net radiometers| Hukseflux NR01| See pyranometers and pyrgeometers| NRO1
consists of 2 pyranometers and 2 pyrgeometers
amplifiers| Hukseflux -TR amplifiers Kipp & Zonen AMPBOX series| Calibration
and re-programming. Calibration traceable to traceable voltage and current
standards.|
Checklist / requirements for recalibration of sensors
Table 2 Checklist for calibration services
HUKSEFLUX CALIBRATION SERVICES
| subject | responsible | responsibility |
|---|---|---|
| contact our Service desk / Service form | customer | Before service, contact |
servtce@hukseflux.com Preferably, complete the
Service (FtMA) form and e-mail it to us. We need to know the sensor model(s),
quantity and serial number(s), the sensor condition, and information what
servicing is needed; often this is not only calibration but also repair.
calibration: list of permissible sensors| customer| Hukseflux can calibrate
all sensors of the Hukseflux brand, except the discontinued model OR03. In
case of other-than-Hukseflux brand sensors only: transmit the brand name and a
scanned copy of the original calibration certificate. Hukseflux may not be
capable of calibrating your sensor. Wait for our reply. We can calibrate the
following pyranometer models of the Kipp & Zonen brand: CMP/SMP 10, 11, 21
produced after 01-01-2008 or calibrated at the manufacturer with the following
references: CMP21 70114, 70115 and 201242
CM/CMP/SMP 3, 4, 5, 6 produced after 01-01-2006 or calibrated at the
manufacturer with the following references CMP6 910012, CMP3 60193 and 71176
and the following pyrheliometer models of the Kipp & Zonen brand: CH/CHP/SHP
1, only produced after 01-01-2011 or calibrated at the manufacturer with the
following references: CI-1P1 ref 1 and ref 2. We can calibrate most heat flux
sensors (gardon gauges and Schmidt-Boelter gauges) of the Medtherm brand with
smooth 0.5 or 1 inch diameter housings. Calibration capabilities (see table 1
for details) include the following models: 64-xxyy-20, 21 and 18 with xx < 100
and yy void or”SB”, GTW-7-32, GTW-10-32 (also with extension 485A)
calibration of other sensors| customer| To judge if we can calibrate other
models or brands: please supply us with the brand name, model number,
calibration certificate and a photograph.
options| customer| As an option, you may order a certificate including your
name and contact information
conditions| customer| Only if different-than-usual: specify required
calibration reference conditions
logistics: supply| customer| Specify shipment responsibility. Usually the
customer will be responsible for shipment both ways.
quotation| Hukseflux| The quotation will include a reference number. Possibly,
in case of unclear condition of the sensor, the quotation includes a
diagnostics fee. This fee must also be paid in case the sensor is irreparable.
In case sensors are not clean, a cleaning fee may be charged per sensor.
order| customer| Include the Hukseflux reference number (usually our
quotation/proforma invoice number)
confirmation| Hukseflux| Hukseflux will issue a confirmation with an estimated
delivery time
calibration| Hukseflux| Typical processing time is 15 working days. This can
be shortened upon request
logistics: pickup| customer| Please follow Hukseflux shipment directions.
Figure 3 a typical calibration system at Hukseflux
Restrictions
- Hukseflux is ISO 9001 certified, and an accredited calibration laboratory according to ISO / IEC 17025 for pyranometers and pyrheliometers. In some applications, for example in fire testing, end-users may require accredited calibration for their local reference measurement standard.
- Hukseflux can calibrate sensors of other-thanHukseflux brands. However, Hukseflux is not able to perform diagnostics and service of sensors of those brands. In case other-than-Hukseflux brand sensors need extensive servicing or repair which cannot be performed by the user, we recommend obtaining this service from the manufacturer.
- Not all brands offer access to the internal program running on their digital sensors. In case access to the sensor software is not allowed, Hukseflux will generate a “correction factor”, specifying the ratio of the sensor output according to the new calibration to the output given by the sensor. It is up to the user how to treat this factor. It may be implemented into the SCADA system in which the sensor is applied. In case the correction factor differs less from the ideal factor 1 than the calibration uncertainty, most users will choose not to correct their data.
About Hukseflux
Hukseflux is the leading expert in measurement of energy transfer. We design
and manufacture sensors and measuring systems that support the energy
transition. We are market leaders in solar radiation- and heat flux
measurement. Hukseflux products and services are offered worldwide via our
office in Delft, the Netherlands and local distributors. Contact Hukseflux for
calibration. If we cannot offer you an acceptable solution ourselves, we will
tell you who can.
Would you like more information?
E-mail us at:info@hukseflux.com
Copyright by Hukseflux. 000364-07-000
We reserve the right to change specifications without prior notice Page 4/4.
For Hukseflux Thermal Sensors go to
www.hukseflux.com or e-mail us:
info@hukseflux.com
References
- Market leader in solar radiation & heat flux measurement
- Market leader in solar radiation & heat flux measurement
- Swedish research creating sustainable growth | RISE