Eltek Squirrel 1000 Series Manual de usuario

Table Of Contents

1. Introduction.............................................................................4

2. The functions of the datalogger .............................................5

2.1 LOG................................................................................5

2.2 METER...........................................................................5

2.3 REVIEW .........................................................................5

2.4 TIME / date.....................................................................5

2.5 START time / date...........................................................5

2.6 INT log / sample (logging/sampling interval) ....................5

2.7 OUTPUT.........................................................................5

2.8 MODE.............................................................................6

2.9 CHANNEL SETUP..........................................................6

2.10 STAT (status).................................................................6

3. How to start logging from the default settings......................7

3.1 Set time/date...................................................................7

3.2 Select logging interval.....................................................8

3.3 Set the type of logging required.......................................8

3.4 Set the number and types of channels.............................9

3.5 Start logging..................................................................11

3.6 Stop logging..................................................................12

4. More about the functions of the datalogger ........................13

4.1 The LOG function..........................................................13

4.2 The METER function.....................................................15

4.3 The REVIEW function...................................................16

4.4 The TIME and date function..........................................17

4.5 The delayed START function.........................................17

4.6 The INT function (logging/sampling interval)..................19

4.7 The OUTPUT function...................................................20

4.8 The MODE function.......................................................21

4.9 The CHANNEL SETUP function....................................27

4.10 The STAT function.......................................................30

5. Connecting sensors/signals to the datalogger....................35

5.1 Wiring up thermistor sensors.........................................35

5.2 Wiring up platinum resistance sensors ..........................35

5.3 Wiring up sensors to voltage channels ..........................36

5.4 Wiring up sensors to current channels...........................36

5.5 How to provide a power supply to the sensors...............37

5.6 Wiring up Current Loop Sensors driven by the Squirrel..38

5.7 Wiring up an AC voltage input.......................................38

5.8 Wiring up a pulse count channel....................................39

5.9 Wiring up event channels..............................................40

5.10 Wiring up for external triggers ......................................41

6. Troubleshooting guide .........................................................42

6.1 “Why won’t it do that?”...................................................42

7. Memory Card Squirrels (1000 series only)...........................43

7.1 Types Of Card...............................................................43

7.2 Preparing the Card........................................................43

7.3 Squirrel Settings............................................................43

7.4 Extracting the data........................................................46

8. Electricity Squirrels (1010, 1020)..........................................48

8.1 Logger functions ...........................................................48

8.2 Selecting ranges...........................................................48

8.3 Making connections to the datalogger ...........................49

9. Squirrels with pH channels ..................................................50

9.1 Channel Selection.........................................................50

9.2 Pre-setting the Temperature..........................................50

9.3 Choosing the Calibration Point......................................51

9.4 Calibrating the Midpoint (pH7.0)....................................51

9.5 Calibrating the Slope.....................................................52

9.6 Current Consumption and Battery Life...........................52

9.7 Care and Use of pH Probes ..........................................53

10. Special Instructions..............................................................54

10.1 Alarms.........................................................................54

10.2 Wind Speed & Direction...............................................55

11. Fast Logging (1000 series only) ..........................................57

11.1 Logging Interval...........................................................57

11.2 Translation with Darca .................................................57

11.3 Darca Contact..............................................................58

12. Safety and operating conditions ..........................................59

12.1 Operator safety............................................................59

12.2 Squirrel safety..............................................................59

12.3 Errors caused by ground connections ..........................59

12.4 Operating conditions....................................................59

12.5 Protection against memory loss....................................60

12.6 Changing batteries.......................................................60

12.7 Resetting the datalogger..............................................60

12.8 Changing fuses............................................................61

12.9 Changing memory........................................................61

12.10 Sensor supply voltage ................................................62

13. Technical data.......................................................................63

13.1 Inputs, ranges and resolutions .....................................63

13.2 Specification................................................................64

14. Connectivity ..........................................................................65

14.1 Signal connector..........................................................65

14.2 Output connector (for connection to a PC)....................65

Declaration of Conformity ..............................................................67

Manufacturer...........................................................................67

Description of Equipment........................................................67

Applied Standards...................................................................67

1. Introduction

This user manual covers the operation and configuration of the Squirrel

datalogger via the three operating buttons on its front panel. The Squirrel

can also be configured and operated from a connected PC running Eltek’s

Darca software. The operating buttons on the front of the logger allow the

setup of nearly all of the major functions of the logger, but some functions

can only be accessed through Darca. These include:

·Scaling EU units in a channel

·SMS Alarm operation

For more information on using Darca, consult the document TM1020.

Overview of the operating buttons

function selects the function.

select selects the channel or

sub function.

set is used to change any of

the settings.

To switch the datalogger on,press and hold function. To switch it off,

leave in LOG or OUTPUT function for a few seconds. If the datalogger is

left on in any other function, it will automatically switch off after 4 minutes.

2. The functions of the datalogger

Listed in the order they appear when scrolling with the function button.

2.1 LOG

Used to start and stop logging. In addition, this function displays the

number of readings already stored in the memory (used), and the number

of readings that may be stored in the remaining memory (free). All the

readings stored in memory may be erased in this function. In addition, this

function will allow you to display how many separate runs have been

recorded.

2.2 METER

Displays the value of the channels that have been selected, in the

appropriate units. The readings are updated every second.

2.3 REVIEW

Displays the recorded values of the selected channels, starting with the

first reading in the last run (if the logger is not currently logging). If the

logger is currently logging, then the first reading in the current run is

displayed.

2.4 TIME / date

Displays the real time and date on two lines. The 24 hour clock may be

displayed in the appropriate country format (see 2.10f); the time

increments every second.

2.5 START time / date

This option allows you to set a future time and date at which logging will

start.

2.6 INT log / sample (logging/sampling interval)

The interval function is used to set the time intervals at which readings are

taken and stored in memory. The logging interval can be set between 1

second and 24 hours in 1-second increments. The second line is used to

set the time intervals at which inputs are sampled; these readings are

averaged and then stored in memory at the logging interval.

2.7 OUTPUT

Used for output of recorded data to a computer. During downloading of

data, the LCD displays the number of blocks to be downloaded and this is

decremented after each successful transmission of a block. No baud rate

setting is required as it is automatically selected.

2.8 MODE

Used to select the type of logging required, namely Interval, Average,

Event, Event+Interval, Event+Average. This function allows you to select

how logging may be started and stopped via an external trigger, if

required. In addition, you can select whether you wish logging to stop

when the memory is full or whether logging continues and old data is

overwritten.

2.9 CHANNEL SETUP

Used to select the channels from which you require data to be recorded.

The range for each channel is also selected, which could include

engineering units if these have been set up by Darca. This function also

displays how many channels have been selected to record.

2.10 STAT (status)

This function displays the following status information concerning the

datalogger: -

a) internal battery voltage and number of days remaining of viable battery

life when logging

b) external supply voltage

c) memory size (with the ability to change memory size in 1K increments)

d) sensor power-on time (up to 60 seconds before the reading is taken)

e) date format configuration (adjustable)

f) language format (adjustable)

g) mains frequency filter (adjustable)

h) model number and current version of firmware

i) temperature units (thermocouple Squirrels only)

j) network option (if enabled with Darca software)

3. How to start logging from the default settings

3.1 Set time/date

The real time and date are displayed on two lines. The time is set in the

format HH:MM:SS. and the date default format is DD/MM/YY. Press

function until the display shows: -

Press set and the following prompt appears: -

Hold set button and cursor will appear: - (the clock will stop)

Press select to move cursor: -

Press set to change value: -

Press function when settings are correct: - (cursor will disappear and

clock will restart with new settings).

If invalid data is entered, the display changes the settings to the nearest

valid time/date.

3.2 Select logging interval

The logging interval can be set between 1 second and 24 hours in 1-

second increments. Recordings are stored at this interval. Press function

until display shows: -

Press set to display: -

Hold set button and cursor will appear: -

Press select to move cursor: -

Press set to change value: -

This example changes the logging interval from 30 to 35 seconds. Press

function to clear the cursor and to continue with setup.

3.3 Set the type of logging required

The possible types of logging are detailed in section 4.8.1. However, the

default setting is for recording data at fixed intervals only. Press function

until mode is displayed: -

You need do nothing else except set which channels to log if you simply

need to record data at the logging intervals set in section 3.2.

3.4 Set the number and types of channels

Each model has a specified combination of channels, please consult the

data sheet in Section 13 for details of your particular model. This section

will guide you to set up a temperature and voltage/current channel. Press

function until the following is displayed: -

The default setting will always be the first range of the first channel. If you

deselect all channels, then you will not be able to progress until you have

configured at least one channel. In this case, pressing the function key will

only display the following message: -

Please proceed to the following sections for instructions on how to set up

specific channels.

3.4.1 Temperature channel setup

Thermistors, thermocouples and platinum resistance sensors are capable

of accurately measuring temperatures within different ranges. This

example is for a datalogger with thermistor type inputs. Press select once

and the following message will be displayed: - (Pressing select several

times will allow you to scroll through the channels)

Press set and hold for 3 seconds: -

The temperature range then increments to the next available range with

every press of the set button: -

Leave the display showing your chosen range and press select to set up

another channel.

3.4.2 Voltage/current channel setup

These channels may be configured for voltage or current. There are

typically 18 voltage ranges and 2 current ranges. Voltage/current

channels have an additional range called the EU (Engineering Units)

range where the user can select specific engineering units (e.g. m/s) and

a max/min scale (e.g. 0/50 m/s). The appropriate voltage/current range is

then selected from the existing hardware ranges (e.g. 0/1 V). In the above

example, 0/50 m/s = 0/1V and the display in METER mode will show

readings in m/s. All data in this channel will be stored and downloaded

using m/s as the unit. In the above example, the CHANNEL SETUP

function will alternate between the following displays: -

The EU range may only be set up using Darca (please see price list or

contact your distributor for details). Whenever a voltage/current channel

has not been set up, the initial range is always the default EU range and is

displayed as follows: -

Press select to change channel. For example, select channel 5: -

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