Enmet Formaldemeter htV Instrukcja Użytkownika Pobierz pdf (Strona 5)

Formaldemeter htV ENMET Corporation

Front View Back View

Figure 1: Features of the Formaldemeter

™

htV

3.0 Technical Information

3.1 Principle of Operation

Electrochemical formaldehyde sensor

The Formaldemeter

™

htV uses proven electrochemical sensing technology for determining the concentration of formaldehyde

in air samples. The instrument contains an electrochemical formaldehyde sensor comprising two noble metal electrodes and a

suitable electrolyte.

When air is drawn into the sensor by means of the internal sampling system, a small voltage is generated which is directly

proportional in magnitude to the concentration of formaldehyde in the sample.

This voltage is produced as a result of the electrooxidation of formaldehyde at one of the catalytically active electrodes.

The signal is fed to a precision electronic amplifier and output on the instrument’s display, when calibrated, as formaldehyde

concentration in ppm (parts-per-million by volume).

All the electronic systems are based on modern, integrated circuitry employing the latest surface mount technology to ensure

that the Formaldemeter

™

htV is an exceptionally robust and reliable instrument.

Battery

Compartment

Serial No.

ppm

Sample

Cal.

0.00

Formaldemeter

htV

Display

Keypad Area

Sampling Port

Serial Port

ON-OFF

Button

1 2 3 4 5 6 7 8 9 10 ... 13 14

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