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Short manual testo 540 11

Short manual testo 540

Protection cap: Park position

Light sensor

Display

Control keys

Battery compartment (on rear)

Basic settings

Instrument off > press and hold 2s > select with ( ),

confirm with ( ):

Auto off function: OFF,ON

Switching the instrument on

Press .

Switching the display light on (for 10s)

Instrument on > press

Select display size

Instrument on > select with :

lux, ftc

Select display mode

Instrument on > select with :

Current reading > Hold: Readings are held > Max: Maximum values > Min: Minimum

values

Switching the instrument off:

Instrument on >press and hold 2s.

Safety and the environment12

Safety and the environment

About this document

· Please read this documentation through carefully and

familiarise yourself with the product before putting it to use.

Keep this document to hand so that you can refer to it when

necessary. Hand this documentation on to any subsequent

users of the product.

· Pay particular attention to information emphasised by the

following symbols:

Important.

Avoid personal injury/damage to equipment

·Only operate the measuring instrument properly, for its

intended purpose and within the parameters specified in the

technical data. Do not use force.

·Never store the product together with solvents, acids or other

aggressive substances.

·Only carry out the maintenance and repair work that is

described in the documentation. Follow the prescribed steps

when doing so. Use only OEM spare parts from Testo.

Protecting the environment

·Take faulty rechargeable batteries as well as spent batteries to

the collection points provided for them.

·Send the product back to Testo at the end of its useful life. We

will ensure that it is disposed of in an environmentally friendly

manner.

Specifications 13

Specifications

Functions and use

The testo 540 is an illuminance measuring instrument. It is

normally used to measure illuminance, e.g. at workplaces.

Technical data

Measurement data

· Sensor:

Photo diode

· Parameters:

Lux (lm/m2), foot candle (lm/ft2)

· Measuring ranges:

0...99999 Lux, 0...9300 ftc

· Resolutions:

1 Lux (0...19,999 Lux), 10 Lux (rest of

range)

0.1 ftc (0...1,860 ftc), 1 ftc (rest of

range)

· Accuracies (Nominal temperature

25 °C, ±1 Digit):

± 3 Lux or ± 3 % to reference (Class B,

DIN 5032 part 7)*

· Measuring rate:

0.5 s

* whichever is the greater

Further instrument data

· Protection class: IP40

· Ambient conditions:

0...50 °C, 32...122 °F

· Storage/transport conditions:

-40...70 °C, -40...158 °F

· Voltage supply:

2x 1.5 V type AAA

· Battery life:

200 h (without display light)

· Dimensions:

133x46x25mm / 5.2x1.8x1.0 in (inc.

protection cap)

· Weight: 95 g / 3.4 oz (inc. batteries and

protection cap)

Directives, standards and tests

· EC Directive:2004/108/EEC

Warranty

· Duration: 2 years, warranty conditions:

see www.testo.com/warranty

Product description14

Product description

At a glance

Protection cap: Park position

Light sensor

Display

Control keys

Battery compartment (on rear)

First steps

Inserting batteries:

1 To open the battery compartment, push the battery cover

down.

2 Insert batteries (2x 1.5 V type AAA). Observe the polarity!

3 To close the battery compartment, push the battery cover

back on.

Basic settings (configuration mode):

Adjustable functions

· Auto off function: OFF,ON (instrument switches off automatically if no key is

pressed for 10 minutes)

1 When switching the instrument on, press and hold until

and appear on the display (configuration

mode).

-The adjustable function is displayed. The current setting

flashes.

2 Press ( ) several times until the desired setting flashes.

3 Press ( ) to confirm the input.

- The instrument changes to measuring mode.

Using the product 15

Using the product

To guarantee correct readings: Hold the instrument horizontally

so that the light sensor is directed upwards.

Switching the instrument on:

Press .

- Measuring mode is opened.

Switching the display light on:

The instrument is switched on.

Press .

- The display light goes out automatically if no key is

pressed for 10 seconds.

Changing the parameter unit:

Press until the desired unit appears.

Adjustable units

·lux

·ftc

Changing the display view:

Adjustable views

· Current reading

·Hold: Readings are held.

·Max: Maximum values since the instrument was last switched on or last reset.

·Min: Minimum values since the instrument was last switched on or last reset.

Press several times until the desired view appears.

Resetting Max/Min values:

1 Press several times until the desired view appears.

2 Press and hold until - - - - appears.

3 Repeat steps 1 and 2 for all values that are to be reset.

Switching the instrument off:

Press and hold until the display goes out.

Maintaining the product16

Maintaining the product

Changing batteries:

1 To open the battery compartment, push the battery cover

down.

2 Remove used batteries and insert new batteries

(2x 1.5 V type AAA). Observe the polarity!

3 To close the battery compartment, push the battery cover

back on.

Cleaning the housing:

Clean the housing with a moist cloth (soap suds) if it is dirty.

Do not use aggressive cleaning agents or solvents!

Tips and assistance 17

Tips and assistance

Questions and answers

Question Possible causes/solutions

Hi · Readings outside the measuring range (too high:

Keep to the permitted measuring range.

· Residual capacity <10 min: Change batteries.

If we could not answer your question, please contact your dealer

or Testo Customer Service. For contact details, please visit www.

testo.com/service-contact.

Notes18

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