HFX datasheet(20/36 Pages) RMT

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THERMOELECTRIC HEAT FLUX SENSORS

Page 20 of 36

All the HFX Heat Flux Sensors can be used bi-directionally. If the direction

of the heat flux is reversed, the sign of the Sensor voltage output changes

(i.e. from positive to negative). Since the sensitivity of the Sensor does not

depend on the direction of the heat flux, the measurement of the reversed

heat flux has the same accuracy.

Table 8.1: Heat flux resolution of Heat Flux Sensors of HFX series at

different voltmeter resolution (1 mV and 1 V)

Sensor type

Sensitivity,

mV/(W/m

Heat flux resolution W/m

Voltmeter 1mV

VoltmeterV

HFD02-040-04L04

0,082

HFD03-060-04L06

0,038

HFD04-059-05L08

0,033

HFD04-097-05L10

0,021

HFD06-127-05L12

0,025

HFС06-126-05L14

0,021

However, on some voltmeters the measurement of negative voltages may

not be possible or may be less accurate than the measurement of positive

voltages. Further information about the positive and negative sides of the

Sensors can be found in Section 4.

Applicability

Voltmeters are compatible with all the HFX Heat Flux Sensors without a

plug.

7.3 Third party read-out device

A data logger is highly recommended for the measurement of time-

dependent variations of the Sensor signal. For the choice of a suitable

device, apply the same considerations as for the voltmeter.

Applicability

Third party read-out devices are compatible with all the HFX Heat Flux

Sensors without a plug.

HFX Datasheet(PDF) 20 Page - RMT Ltd.