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Fluke 9173

£7,106.40 £5,922.00

Availability: Call for info

Product Code

FLU9173

The Fluke 9173 has unmatched performance for calibrating between 50°C to 700°C. Uncertainties for calibrating at high temperatures are dramatically reduced due to the uniformity performance and stability of this Metrology well.

Basic features include a clear LCD display, which will simultaneously show several parameters including stability criteria, block temperature, reference temperature (with option added), cutout temperature and ramp rate. An RS-232 port is also available for connection to the Interface-IT software (supplied), or other Fluke calibration software such as MET/TEMP II. If you're not using a PC, the 9173 still has four pre-programmed calibration tasks, featuring up to 8 set point temperatures and the ability to select ramp and soak times between each. Also included is an automated switch test protocol and any one of six well inserts can be purchased to enable calibration of different probe sizes.

The suggestion for key components in an industrial heat source is laid out in document EA-10/13 (European Metrology Community), where they list 6 critical components including stability, calibrated display temperature, axial and radial uniformity, hysteresis and loading. The Fluke 9173 offers an additional component in the form of a built-in reference input. This can be purchased as an optional extra and uses the proprietary Tweener measurement circuitry, reading thermometer probes accurately from +/- 0.006°C at 0°C to 0.027°C at 661°C. This input will accept 100, 25 & 10Ω PRTs and is compatible with all PRTs sold by Fluke. Connection to the well is made via a 5 pin DIN plug.

Calibrated Display Accuracy

Typically, a dry-well is calibrated using a calibrated PRT probe, inserted into the well and adjustments are made to the internal sensors using the readings from the PRT. The problem with this is that the unique characteristics of the PRT are then calibrated into the dry-well, these characteristics include temperature gradients, loading effects and hysteresis. Fluke Metrology wells minimise the effect of these characteristics, resulting in a calibrated temperature that is much more accurate, this accuracy can be improved further if you order the model with the built-in reference.

Stability

Fluke Metrology wells have the the most stable heat sources in the world, the 9173 achieves a stability of 0.03°C, with better stability only being found in liquid baths or primary fixed point controllers.

Axial Uniformity

EA-10/13 makes the suggestion that a minimum 40mm zone of maximum homogeneous temperature should be available, typically at the bottom of the well. With its unique combination of components and 203mm well depth, the 9173 increases this zone to 60mm.

Radial Uniformity

This is defined as the difference in temperature across two dry-wells. When using a poorly designed calibrator or a large diameter probe, these differences can be quite significant. As such, the Fluke Metrology wells specification is defined as the largest temperature difference between the vertically homogeneous zones of any two wells.

Loading

This is defined as the change that is detected by a reference thermometer at the bottom of the well, when probes are inserted into all the other wells at the same time. The deeper wells in the 9173 mean the effects of this loading are minimised.

Immersion Depth

Issues arising from the effects of load, and axial gradients is minimised with the 203mm deep well on the Fluke 9173. Characteristics regarding the probe itself are also addressed, such as probe width, sensor size and location and thermal mass.

There are several models in the range as listed below. Prices may vary depending on the model ordered, please contact us on 01923 442244 for a formal quotation: