Key | Symbols lit besides |
| the numbers |
All the symbols are lit for a few seconds after switching on.
ENGLISH
Description
Key for switching the instrument on and off. The instrument switches off automatically about 8 minutes after this key has been pressed, as it has
a
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| lx/fcd | For measuring ILLUMINANCE; |
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| when this key is pressed the rea- |
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| ding may be in the photometric unit |
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| lux or foot candle if a photometric |
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| probe is fitted in the instrument. |
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| °C/°F | If a temperature probe of the TP870 |
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| series is fitted in the instrument, this |
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| indicates the temperature measu- |
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| red by the probe. The key may be |
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| pressed alternately to give a rea- |
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| ding in °C or °F. |
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| When the key is pressed it erases |
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| from the memory and resets the |
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| maximum, minimum and integrated |
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| Q energy values, then resets the |
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| count of the time elapsed. |
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| RCD K | When the key is pressed the instru- |
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| ment stores and updates the maxi- |
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| mum, minimum and integrated Q |
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| energy values for the time elapsed, |
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| recorded by the measurement pro- |
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| be fitted. The battery symbol fla- |
– 27 –
