Ht-instruments HT307 Manuale Utente Scaricare il pdf (Pagina 5)

HT307

EN - 4

2.2. INSTRUMENT DESCRIPTION

HT307

Lux/fc light met er

LEGEND:

1. LCD display with a maximum reading of 2000

points. Signs of measured values, unit

function symbols and decimal points are

displayed.

2. Power key: press it to turn ON or OFF the

meter.

M/H

key: press it to select the maximum,

minimum or current reading. Press for more

than 1 second to resume normal

measurement.

Lx/Fc

key: press it to express values in fc scale

instead of lux (1 fc=10.76 lux).

D-H

key: press it to hold displayed data. Press

again to resume normal measurement.

selection key: press it to select 20 lux, 200

lux, 2000 lux, 20 Klux, 200 klux, / 20 fc, 200 fc,

2000 fc, 20 Kfc. Overall, 5 ranges for lux and 4

ranges for fc. Upon pressure, a mobile cursor

selects the desired full scale.

7. Output for analogic DC. Refer to Table 1

below to get the equivalence Lux/fc and mV

values.

8. ADJ Trimmer for manual zeroing regulation

9. Photo detector.

Fig. 1: Instrument description.

Range

DC output

Plug for DC analogic output

20 Lux/fc 1 Lux/fc = 10 mV

200 Lux/fc 1 Lux/fc = 1 mV

2000 Lux/fc 1 Lux/fc = 0.1 mV

20 kLux/fc 1 Lux/fc = 0.01 mV

200 kLux 1 Lux = 0.001 mV

Table 1: signal equivalence values between Lux/fc and mV.

1 2 3 4 5 6 7 8 9 10 11

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Ht-instruments HT307 Manuale Utente Pagina 5

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