ELSEC 765 Bedienungsanleitung

765 & 765C

ENVIRONMENTAL MONITOR

USER MANUAL

LITTLEMORE SCIENTIFIC ENGINEERING (ELSEC)

Gutchpool Farm

Gillingham

Dorset

Tel: (+44) (0)1747 835550

Fax: (+44) (0)1747 835552

Email: [email protected]

765.docx V4.7

 
CONTENTS 
 
INTRODUCTION........................................................................................................ 1 
BASIC OPERATION .................................................................................................. 2 
Set Button.............................................................................................................. 2 
Firmware and Hardware ........................................................................................ 3 
UNITS OF MEASUREMENT...................................................................................... 4 
Ultra-Violet (UV)..................................................................................................... 4 
Visible Light............................................................................................................ 4 
Temperature, Humidex & Heat Index..................................................................... 5 
Humidity................................................................................................................. 5 
Atmospheric Pressure............................................................................................ 5 
DISPLAY.................................................................................................................... 6 
Brightness.............................................................................................................. 6 
CLOCK....................................................................................................................... 6 
Setting the Time..................................................................................................... 6 
Setting the Date..................................................................................................... 6 
Date Format........................................................................................................... 7 
Hiding the Clock..................................................................................................... 7 
DATA LOGGING........................................................................................................ 8 
Data Storage and Download.................................................................................. 8 
Storage Capacity ................................................................................................... 9 
Show Status........................................................................................................... 9 
Start Logging.......................................................................................................... 9 
Stop Logging.......................................................................................................... 9 
Format ................................................................................................................. 10 
Erase ................................................................................................................... 10
Viewing the Results using RView......................................................................... 10
Data Format......................................................................................................... 11 
Batteries................................................................................................................... 12
Non Standard Batteries........................................................................................ 12
Charger................................................................................................................ 12
Charging .............................................................................................................. 13
Fast Charge......................................................................................................... 13
Battery Life........................................................................................................... 13
CALIBRATION......................................................................................................... 14
Humidity............................................................................................................... 14
Humidity Test Kit.................................................................................................. 14
Temperature ........................................................................................................ 16 
UV & Visible Light................................................................................................ 16
MAINTENANCE....................................................................................................... 17
Long term storage................................................................................................ 17
USA FCC Radio interference statement.............................................................. 17
SERVICE AND SUPPORT....................................................................................... 18
SPECIFICATIONS ................................................................................................... 19 
2-Jul-21 

INTRODUCTION

One of the primary responsibilities of the custodian of artworks and museum artefacts

is to preserve them for future generations. How they are stored and displayed is

central to this, the 765 Environmental Monitor is an easy to use tool to help in

achieving the safest long term protection.

For many years it has been recognised that one of the major causes of damage to

museum objects and other antiquities is the fading and rotting effect of light on the

object. The most damaging part of the illumination is its ultraviolet (UV) content.

Using the 765 measurements can be taken of the proportion of UV present as

microwatts per lumen (W/lumen), the total amount of UV as milliwatts per square

meter (mW/M2) and the amount of visible light present (Lux).

Most objects are also sensitive to humidity and temperature. The 765 also measures

humidity as % relative humidity and temperature as C or F.

The 765C logging version can be left for extended periods to log the above parameters

at a user set interval (10 seconds to 1 hour). The saved data can then be transferred to

a computer for display, graphing etc.

We always want to improve our products. If you have any suggestions please send

them to us.

BASIC OPERATION

To take a reading the appropriate yellow button is pushed depending on the

measurement required and the reading is taken.

UV= Ultra Violet (µW/lumen or mW/M2)

Vis= Visible light (Lux or Foot-candles)

T= Temperature (Centigrade or Fahrenheit)

RH= Humidity (%Relative Humidity)

The unit automatically turns off 20 seconds after the button is released unless a button

is held down for over 3 seconds, this will cause readings to be taken continuously until

a button is pressed again.

If the T and UV buttons are pressed together then all parameters are displayed at the

same time. Hold both the buttons down for over 3 seconds for a continuous readout.

RH & T pressed together shows atmospheric pressure and other information (see

below). This only works with later models (Hardware version greater than 13).

Typical display:

56.2

%RH

T: 26.4°C

DP: 17.0°C

13:10

15-06-2012

H L B

A: Current reading

B: Units of measurement

C: Subsidiary reading (Current temperature)

D: Subsidiary reading (DP = Dew Point)

E: Current time (24 hour clock)

F: Current date

G: Hshows that the reading is “Held” and the unit will turn itself off after 10

seconds of inactivity. A round blob “●” shows the unit is in continuous reading

mode until a button is pushed, nothing here means that a single reading is being

taken.

The Lindicates logging is in operation (later firmware versions)

A battery level gauge appears at B.

The above format is slightly different for some parameters and can be altered by the

user if required, see below.

The current time and date can be hidden by pressing Set\Clock\Hide-Unhide.

Set Button

The blue Set button is used to access advanced functions, change units etc. If it is

pushed once a menu similar to that below is shown:

Show>

Data log>

Display>

Units>

Clock>

Battery>

Setup>

About

The first menu item “Show” is highlighted, different menu items can be highlighted

using the and buttons. The wanted action is done by highlighting the appropriate

menu item and pressing the Set button. To abort without doing anything press the X

button. In some cases a further sub-menu is displayed with more choices.

Elsewhere in this manual directions in the form Set\item1\item2 are given. This means

Press Set, select item1 in the first menu, press Set again, select item2 in the next menu

and press Set.

To take a measurement without having to look at the display while the reading is

taken (for example where the operators head may affect the reading) proceed as

follows:

1. Position the monitor where the reading is to be taken.

2. Push the appropriate button for 1-2 seconds and release.

3. Hold the monitor in position for at least 2 seconds.

4. Without operating any buttons by mistake move the monitor so the reading

can be noted before it turns itself off.

Firmware and Hardware

The unit firmware is the embedded computer program that controls the unit. The

firmware is updated periodically to add additional features and to correct any faults

that have become apparent. Any unit’s firmware is updated at the factory whenever it

is returned for calibration/repair.

The hardware is the physical unit itself including the electronic circuit inside. Units

manufactured after July 2015 have improved hardware (version 10) that allows faster

charging. Further updates in 2019/2020 (V12 & V13).

The firmware and hardware versions are displayed as “F.f : H.h” when the unit is

turned on or by pressing Set\About. F.f is the firmware version H.h is the hardware

version.

Underneath this line, if a humidity sensor is fitted, the sensor version is shown as RHx

where x is the RH sensor type. (Not all versions)

The hardware version is not displayed on units with firmware version less than 2.9

UNITS OF MEASUREMENT

Ultra-Violet (UV)

Traditionally UV has been measured in museums as the proportion of ultraviolet

present. This result is useful for checking a particular lamp or window because the

proportion of UV does not change rapidly with the distance from the light source.

Using a simple rule the amount of UV on an object can be limited. It is usual to

arrange that the proportion of UV should not exceed 75µW/lumen in museums and

galleries, though some organisations try to keep UV levels below 25µW/lumen

The damage is done by the total amount of UV falling on the object so it is useful to

be able to measure this directly, especially if non standard amounts of illumination are

required. The amount of UV should be as little as possible but in general should not

exceed 20mW/M2, again some organisations keep the level below 6mW/M2.

Both the above units are displayed when the UV button is pressed, one in large

characters, the other smaller at the bottom of the screen. Which is displayed where can

be swapped by pressing Set\Units\µW/Lumn-mW/M².

When measuring low levels of UV the 765 can take up to 5 seconds to take the

reading. So, to get a reasonably quick response, when initially turned on, the unit only

measures for one second and if UV levels are low this will show as zero. If the "UV"

button is pushed again the full 5 seconds is allowed for the measurement and if a low

level of UV is present it will be detected and displayed.

Visible Light

This can be displayed either in Lux or Foot-candles. To change the units press

Set\Units\Lux-Footcandl.

A visible light readout is provided to control illumination and limit damage done by

visible light. Normal museum light levels should be limited to 150-250 Lux.

Once measurements have been made the light level can be altered if necessary and UV

filters can be fitted on windows, fluorescent tubes or other UV producing light sources

as required. These filters often deteriorate over a period of years so it is essential to re-

check them periodically.

Suggested light levels for various purposes are given below:

Corridor, stairs etc

100/150 Lux

Warehouses, storage bays

100/150 Lux

General office work

300/500 Lux

Rough bench/machine work

300/500 Lux

Medium bench/machine work

500/700 Lux

Drawing offices

750/1000 lux

Fine bench work

1000/1500 Lux

Fine inspection

1500/3000 Lux

Minute work

3000/5000 Lux

Temperature, Humidex & Heat Index

Temperature can be measured in degrees Centigrade or Fahrenheit. To change the

units press Set\Units\Temperature.

Humidex & Heat Index

In hot weather conditions the 765 displays values for the Humidex (Hmdx) and the

Heat Index (HI). These are index numbers used by meteorologists to describe how hot

the weather feels to the average person by combining the effect of heat and humidity.

Heat Index is normally used in USA, Humidex in Canada. These are displayed when

the T button is pressed, but only if the temperature is high enough and the calculation

is valid.

Humidity

Humidity is measured as % relative humidity (%RH). This is the fraction of the

maximum amount of water that the air can hold at the current temperature and

pressure.

In general if the temperature is reduced the amount of water it can hold gets less. So if

the temperature of some air is reduced its humidity rises, and at some point the air will

not be able to hold the water it has and water will start to condense out (form

mist/cloud or drops of water on a surface), the relative humidity has reached 100%.

The temperature at which this happens is the dewpoint. The 765 displays the dewpoint

with the humidity.

The temperature/dewpoint difference is often used as a measure of the likelihood of

condensation (fog) occurring, particularly in meteorology. If the temperature is only

one or two degrees above the dewpoint in the evening then fog is likely as the

temperature falls during the night.

The UK National Trust tries to keep the indoor relative humidity between 50% and

65%, aiming for 58%.

Also shown in later versions of the 765 with a pressure sensor is the Absolute

Humidity in g/m³

Atmospheric Pressure

Later versions of the 765 (V13 hardware or greater) have a pressure sensor. The

values for this are displayed by pressing the RH and T buttons at the same time. The

main reading is the atmospheric pressure in Hectopascals (hPa).

Shown below this are:

Temperature (T)

Relative humidity (RH)

Local air density (kg/m³)

Density altitude in feet (DA)

DISPLAY

Brightness

As supplied the 765 automatically adjusts the display brightness to suit the ambient

light level. For a fixed brightness press Set\Display\Manual and select a brightness

level between 0 (dim) and 127 (bright) before pressing Set.

To make the display brightness automatic again press Set\Display\Auto

The display uses a large amount of battery power, the brighter it is the quicker the

batteries run down.

Invert

The display can be shown upside down by pressing Set\Display\Invert. To make it the

normal way up again press Set\Display\Invert again.

CLOCK

The 765 has a built in clock, this is used for Data Logging.

Setting the Time

To set the time proceed as follows, the procedure can be abandoned at any time by

pressing the X button:

1. Press Set\Clock\Set time. The display shows the current time with the hours

highlighted.

2. Use and buttons to adjust the hours to the correct value and press the

Set button.

3. The minutes are now highlighted. Repeat 2 above to set the minutes. When

the set button is pressed the seconds are set to zero.

Setting the Date

To set the date proceed as follows, the procedure can be abandoned at any time by

pressing the X button:

1. Press Set\Clock\Set date. The display shows the current date as Day-Month-

Year with the day highlighted (note that the date is always shown in this

order regardless of the date format setting as described below).

2. Use and buttons to adjust the day to the correct value and press the Set

button.

3. The month is now highlighted. Repeat 2 above to set the month.

4. The year is now highlighted, repeat 2 above to set the year.

Dieses Handbuch passt für folgende Modelle

Inhaltsverzeichnis

Beliebte Monitor Handbücher anderer Marken

Linear Acoustic

Linear Acoustic LQ-1000 Bedienungsanleitung

AOC

AOC I2579V Bedienungsanleitung

Gateway

Gateway FPD1520 Bedienungsanleitung

Furuno

Furuno Mu 120c Bedienungsanleitung

Asus

Asus VB171D - 17" LCD Monitor Bedienungsanleitung

Dell

Dell S2230MX Gebrauchsanweisung

Philips

Philips 107C64 Bedienungsanleitung

Dell

Dell S2409WFP Bedienungsanleitung

EverFocus

EverFocus EN-7517E Bedienungsanleitung

Panasonic

Panasonic TH152UX1 - 152" PLASMA TV Bedienungsanleitung

Dell

Dell Precision 7680 Bedienungsanleitung

LG 50PM1M - - 50" Plasma Panel Bedienungsanleitung

Bosch

Bosch DDU 9 Bedienungsanleitung

Acer

Acer A231HL Bedienungsanleitung

Philips

Philips 86BDL4152T Bedienungsanleitung

NEC

NEC AccuSync LCD5V Bedienungsanleitung

Emay

Emay SleepO2 Bedienungsanleitung

IBM

IBM 6360 Montageanleitung