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Instrument Calibration

UKAS-accredited (no. 4338) calibration services for process equipment

autoclave_calibration

Our Calibration Services Explained

Calibration laboratory

Our fully equipped calibration laboratory (no. 4338) is accredited to ISO 17025 by UKAS. Here, we calibrate temperature sensors and instruments using temperature-controlled chambers, environmental chambers and a number of temperature baths.

We also provide electrical and overpressure or vacuum calibrations within the laboratory. Working in this specialist facility means our engineers and technicians are equipped with fully calibrated and traceable measurement standards at all times. It also enables us to calibrate our customers’ instrumentation, which enables fast turnaround times.

Field calibrations

Our highly competent and well-equipped calibration engineers also provide a wide range of ISO 17025 / UKAS-accredited calibrations on customer sites.

Our current UKAS scope can be referred to here.

What we do for our customers

Our calibration services also include a wide range of traceable calibration parameters that help our customers to meet their own internal quality and technical requirements, as well as external standards such as Nadcap AMS2750 / AMS2769. Our services also help to ensure that the plant is operating correctly, efficiently and – above all – accurately. This means you can be confident that your product will meet quality expectations and that test results are reliable.

Calibration also helps you to understand the performance of your production equipment, resulting in reduced product failures, increased reliability, less downtime and decreased production running costs. And remember: If equipment fails to meet calibration requirements or is not running properly, our engineers can quickly make adjustments or conduct repairs, saving additional call-out costs. Calibration also forms an integral part of our ServiceCare planned preventive maintenance contracts.

Range of Equipment Calibrated

Please refer to our UKAS scope for our current accredited calibration activities.
 
Laboratory
On-site
Temperature (electronic thermometers, temperature sensors, loggers)
Humidity (hygrometers, humidity loggers)
Pressure/vacuum (gauges, transmitters)
Electrical (chart recorders, temperature indicators, ammeters, voltmeters)
Autoclaves and ovens
 
Environmental and climatic chambers
 
Fridges and freezers
 

Calibration uncertainties

Please refer to our UKAS scope for our current accredited CMCs.

Temperature
 
 
In air: traceable certificate
-40 to 20 °C
±0.2 °C
 
20 to 50 °C
±0.3 °C
 
50 to 100 °C
±0.6 °C
In a stirred liquid bath: traceable certificate
-40 to 75 °C
±0.25 °C
 
75 to 200 °C
±0.35 °C
Sites: autoclaves; temperature chambers; ovens; electronic indicators with sensors: UKAS or traceable
-80 to -40 °C
-40 to 0 °C
0 to 50 °C
50 to 250 °C
250 to 500 °C
500 to 1200 °C
±0.85 °C
±0.65 °C
±0.50 °C
±0.70 °C
±1.60 °C
±3.30 °C
On site: environmental chambers (temperature sensitivities as above): traceable
Humidity
10 to 50 °C / 10 to 30%rh
20 to 70 °C / 30 to 98%rh
90 °C / 85%rh
±3%rh
±3%rh
±3%rh
Pressure
 
 
Gas pressure (gauge)
-95 to 100 kPa
100 kPa to 2 MPa
0.24 kPA
0.060%
+0.2 5kPa
Gas pressure (absolute) (inc. altitude units)
3.5 kPa to 120 kPa
±0.025 kPa
Vacuum
 
 
Vacuum gauges (absolute)
1x102 kPa to 1x10-6 kPa
±20%rdg
Humidity
 
 
Lab: Sensor checks/salt pots – ranges 10 to 50 °C at fixed point humidities of 11, 22, 54, 75 and 90%rh: traceable
11%rh to 90%rh
For temperature range 0 to 50 °C
±1.9%rh to ±2.1%rh
Lab: relative humidity instruments: traceable
11%rh to 90%rh
For temperature range 0 to 50 °C
±2.0%rh to ±2.2%rh
On site: environmental chambers (temperature sensitivities as above)
10 to 50 °C / 10 to 30%rh
10 to 20 °C / 30 to 98%rh
20 to 85 °C / 30
±1.8%rh
±2.0%rh
±2.0%rh
On site: relative humidity instruments
11%rh to 95%rh ambient temperature
±2.4%rh
On site: relative humidity instruments
In free air at ambient temperature and humidity
±3.1%rh
Electrical
 
 
Current
0 to 20 mA
±5 μA
Resistance
to 100 Ω
±10 Ω
 
100 to 1000 Ω
±30 Ω
Voltage
mV
±25 μV
 
V
±3.5 mV
Stimulation of thermocouples: base metals
-190 to 1370 °C
±0.5 °C
Stimulation of thermocouples: noble metals
0 to 1700 °C
±0.75 °C
Stimulation of resistance sensors (e.g., PT100)
2 and 3 wire
4 wire
±0.5 °C
±0.25 °C
Cold junction compensation
Ambient temperature
±0.11 °C