Atal EML-01, EML-03, EML-02, EML-05, EML-06 User Manual

MULTILOGGER

EML-01, EML-02, EML-03, EML-04, EML-05,

EML-06, EML-07, EML-08, EML-09

User manual

ATAL B.V.

Ampèrestraat 35-37

NL-1446 TR PURMEREND

Postbus 783

NL-1440 AT PURMEREND

T ([phone]
F ([phone]

E [email protected]

I www.atal.nl

2

Content

INTRODUCTION ........................................................................................ 3

GENERAL SAFETY PRECAUTIONS ......................................................... 5

GETTING STARTED .................................................................................. 6

Multilogger in portable application ................................................. 6

Multilogger in stationary application .............................................. 7

INSTALLATION INSTRUCTION ................................................................. 8

Recommendations for mounting ................................................. 11

INPUTS OF MULTILLOGER .................................................................... 14

Input connectors ......................................................................... 15

ALARM OUTPUT ..................................................................................... 18

POWER SUPPLY OF MULTILOGGER .................................................... 20

KEYBOARD OPERATION ........................................................................ 23

Control and indication parts ........................................................ 23

Basic display operation ............................................................... 24

Main menu .................................................................................. 26

CONNECTING WITH THE COMPUTER .................................................. 30

SOFTWARE ATAL VISION ...................................................................... 31

DEVICE SETUP USING SOFTWARE ...................................................... 33

Device configuration basics ........................................................ 33

Device configuration items .......................................................... 33

APPLICATIONS NOTES .......................................................................... 43

OPERATION AND MAINTENANCE RECOMMENDATIONS .................... 49

TECHNICAL PARAMETERS .................................................................... 52

Power supply .............................................................................. 52

ALARM OUT output .................................................................... 54

Communication interfaces ........................................................... 55

Measuring, data memory and real time clock .............................. 56

Electromagnetic compatibility ...................................................... 56

Operation and storage conditions ............................................... 57

Mechanical characteristics .......................................................... 57

Technical parameters of the inputs ............................................. 58

APPENDIXES .......................................................................................... 68

Appendix 1: Selected error messages ......................................... 68

Appendix 2: Output and power supply circuits ............................. 70

Appendix 3: Input circuits ............................................................ 71

Appendix 4: Connecting of Pt1000 RTD probe ............................ 72

3

Introduction

The Multilogger has been designed for measuring and recording physical
and electric quantities with an adjustable logging interval from 1 second to
24 hours. The device is equipped with 4 inputs (connectors) for external
probes or signals. Moreover, some versions also include an internal
atmospheric pressure and/or CO2 concentration sensor. The production
line consists of several models with various combinations of the input
ranges of the measured quantities. The Multilogger can be used either as
stationary or portable device.

The device allows for:

- Measuring and processing input quantities; the maximum number of
the measured and calculated quantities is 16. Some models can also
acquire data from binary inputs (up to 2 inputs). Models for measuring
barometric pressure allow sea level recalculation.

- Finding and storing minimal and maximal values for each measured
quantity (since their last manual reset).

- Acquiring autonomous time record of measured values, independent
of the mains supply. Recorded values can be stored as separate
samples in the recording time or as average/ minimal/maximal values
during the logging interval. Recording may be continuous, or only
during an alarm optionally.

- Creating alarm states and perform actions (acoustic and optical
signalization, alarm output signal, report messages via telephone
dialer and/or various Ethernet interface protocols, etc.).

- On-line monitoring of the measured values and states. Accessing
these values via the web.

- Collecting and processing data in the central database.

- Powering by batteries (NiMH accumulators or alkaline batteries).

- Powering by external power supply, which can be also used for
charging NiMH accumulators. External power supply is necessary for
the Ethernet interface operation.

4

Multilogger drawing:

* only certain models

5

General safety precautions

The following list of precautions serves to reduce risk of injury or damage of
described instrument. To prevent injuries use instrument accordingly with
rules in this manual.

 Installation and service need to be performed by qualified

persons only.

 Use a suitable power supply. Use power supplies only with a voltage

recommended by the manufacturer (+5V DC) and approved in
accordance with proper standards. Pay attention, the source has
undamaged cables or cover.

 The device and power supply must not be used in a humid and

hazardous environment (such as bathrooms), at locations exposed to
direct sunlight and to other heat sources, thus preventing damages
and deformation of the cover.

 Do not use the instrument without its covers. Do not remove the

covers from the device.

 Do not use the instrument if it does not work correctly. If you think,

that the device is not working correctly, let check it by qualified
service person.

 Never charge batteries that are not rechargeable.
 Do not use the device in explosive environment.

6

Getting started

Multilogger in portable application

 Connect the appropriate probes and signals to the device - for the

TRHD-102, TRHD-103 and Pt1000 probes, follow the optical key for
correct orientation of the connector. Probes of the TRHD-103-xx line
with a cable can placed in the holder on the side of device (optional
accessory). For more information, see Chapter “INPUTS OF

MULTILOGGER”.

 Switch on the Multilogger - push the switch button on the device. The

display lights and the instrument starts working. If you will communicate
with PC via the Ethernet interface, the power adapter +5V DC is
necessary (supplied accessories). For more information, see Chapter
“POWER SUPPLY OF MULTILOGGER”.

 Install Atal Vision software to your PC. If you purchased a license for

full version, register it.

 Connect Multilogger with your PC - you can use the USB, Ethernet or

RS232 port (special cable necessary). Ethernet does not work from
batteries, an external power supply is needed. For more information, see
Chapter “CONNECTING WITH THE COMPUTER”.

 Device settings - use SW to set up the device in accordance with the

connected probes and your requirements. If you are not going to use the
device soon, turn it off and place it in its transportation case. For more
information, see Chapter “DEVICE SETUP USING SOFTWARE”.

 Measurements - remove the Multilogger from the transportation case,

connect probes and external power adapter (if needed) and turn the
device on. Some device settings can be changed from its keyboard.
When measurement ends, move the device to your computer room and
download the recorded data to PC. For more information, see Chapter
“KEYBOARD OPERATION”.

 Charging batteries - if the Multilogger includes rechargeable batteries,

you can recharge them when needed. For more information, see also
Chapter “POWER SUPPLY OF MULTILOGGER”.

 Maintenance and periodic inspections - In order to secure reliable

operation of the device, it is recommended to make regular inspections. For

more information, see part “OPERATION AND MAINTENANCE
RECOMMENDATIONS”.

7

Multilogger in stationary application

 Select a suitable location for placing of the Multilogger - pay

attention to parameters of ambient environment, minimize the number of
cables, avoid sources of interferences. For more information, see
Chapter “INSTALLATION INSTRUCTIONS”.

 Mounting of sensors and routing of cables - pay attention to rules of

theirs installation, use recommended working positions, keep enough
distance from high power devices and cables.

 Connect the appropriate probes and signals to the device - for the

TRHD-102, TRHD-103 and Pt1000 probes, follow the optical key for
correct orientation of the connector. Probes of the TRHD-103-xx line
with a cable can be placed in the holder on the side of device (optional
accessory). For more information, see Chapter “INPUTS OF

MULTILOGGER”.

 Check proper connection - before first switching on. If Multilogger

controls other action regulation elements, it is recommended to put them
out of operation before configuration of Multilogger.

 Switch on the Multilogger - push the switch button on the device. The

display lights and the instrument starts working. If you will communicate
with PC via the Ethernet interface, the power adapter +5V DC is
necessary (supplied accessories). For more information, see Chapter
“POWER SUPPLY OF MULTILOGGER”.

 Install the Atal Vision software to your computer. If you purchased a

license for the extended SW, register it.

 Connect Multilogger with your PC - you can use the USB, Ethernet or

RS232 port (special cable necessary). Ethernet does not work from
batteries, an external power supply is needed. For more information, see
Chapter “CONNECTING WITH THE COMPUTER”.

 Device settings - use Atal Vision software to set up the device in

accordance with the connected probes and your requirements. If
needed, check the alarms functionality. For more information, see
Chapter “DEVICE SETUP USING SOFTWARE”.

 Maintenance and periodic inspections - In order to secure reliable

operation of the device, it is recommended to make regular checks. For

more information, see part “OPERATION AND MAINTENANCE
RECOMMENDATIONS”.

8

Installation instruction

Location of Multilogger must match the operating conditions and not
allowed manipulations.

Working position of the device:

 Multilogger placed on a horizontal, nonflammable surface (horizontal

working position is not suitable for devices with thermocouple inputs and for
devices with cable-less probes).

 Multilogger fixed on the wall from nonflammable materials or in a low-

current switchboard using the holder - the working position is with input
connectors upwards.

Device dimensions:

9

The way of mounting the holder to Multilogger and mounting holes
dimensions:

EML-AC01

EML-AC02

10

EML-AC04

11

Recommendations for mounting

 Do not mount Multilogger near sources of interference (Multilogger

must not be mounted directly to power switchboard nor to its nearness.
Also do not mount data logger near power contactors, motors, frequency
converters and other sources of strong interference).

 In cable routing follow rules of standards for installation of low current

distribution (EN 50174-2), especially it is necessary to pay attention to
avoid electromagnetic interference intrusion to the leads, transmitters,
transducers and sensors. Do not locate cabling near sources of
interference.

 Do not use leads in parallel with power distribution network leads

12

 Do not use cables longer than 30 m generally; for RTD sensors is

recommended max. 15 m; cables must be installed only in interior areas.

 Do not interconnect the inputs with other measuring systems.

 Use shielded cables for the voltage and current inputs - connect the

shielding to the Multilogger but not to the end devices if these do not
have a special terminal for it.
In this case, shielding must
not be connected to external
metal parts of this device or
to any other device. Never
use shielding as a signal
wire.

13

 Do not use common leads for several inputs.
 It is recommended to earth larger systems with Multilogger at one

point - the GND terminal of the alarm output can be used for this
purpose. This grounding will work correctly if the system would not be
grounded currently at another point too. One-point grounded systems
are more resistant against electromagnetic disturbance.

14

Inputs of Multilogger

Manufactured models differ from each other by their input ranges and by
input connectors. Prior to connecting voltage and current input signals, you
should check their parameters in the following part: “TECHNICAL

PARAMETERS OF THE MULTILOGGER INPUTS”.

Universal input with MiniDIN connector

 temperature and humidity probe of Digi/M line
 temperature probe of Pt1000 line
 temperature probe Pt1000 (RTD)

Universal input with miniature thermocouple connector

 thermocouples of the K, J, S, B, T and N types
 DC Voltage - 18 mV to +18 mV
 DC Voltage - 60 mV to +140 mV

Universal input with terminals

 DC current 0 to 20 mA
 DC voltage 0 to 10 V
 binary signals

EML-01

EML-02

EML-03

EML-08

EML-04

EML-05

EML-06

EML-07

EML-09

Barometric pressure internal sensor
CO2 concentration internal sensor
CO2 external probe only

15

Input connectors

The Multilogger does not have galvanically isolated inputs. For this reason,
only devices that are not connected to any other circuit may be connected
to the inputs of Multilogger. Simplified circuit diagram of inputs is shown in
Appendix 3.

MiniDIN connector _______________________________

It is used for connecting the TRHD-102…, TRHD-103…, Pt1000
probes and for external CO2 probe. Plug properly oriented probe
connector to the input of Multilogger. You can follow the optical key
for correct position. Make sure that the wires, including their shielding,
are not connected to any other conductive parts! Universal MiniDin
connectors are designed for TRHD-102…, TRHD-103… or Pt1000
probes. Conventional probes with a Pt1000 sensor can also be
connected, however with certain
limitations (see Appendix 4). The
input connector marked “CO2” is not
universal and it is designed for
external CO2 probe only.

Universal thermocouple connector ___________________

Plug properly oriented connector to the input of Multilogger. The
connector is mechanically coded using a wider pin. Use the white
uncompensated connector for measuring voltage. Make sure that the
wires are not connected to any other conductive parts! Electrical
coupling among thermocouples can cause large measurement errors
or instable values! To obtain correct measurement values, the
Multilogger has to be temperature-stabilized!

Marking of subminiature thermocouple connectors and wires
manufactured by OMEGA (in accordance with US standard):

Thermocouple type

Connector color

+ wire color

- wire color

K (NiCr-Ni)

Yellow

Yellow

Red

J (Fe-Co)

Black

White

Red

S (Pt10%Rh-Pt)

Green

Black

Red

B (Pt30%Rh-Pt)

White

Black

Red

T (Cu-CuNi)

Blue

Blue

Red

N (NiCrSi-NiSiMg)

Orange

Orange

Red

16

Two voltage ranges are available on each
universal thermocouple connector for measuring
small voltages:

 range -60 mV to +140 mV
 range -18 mV to +18 mV

Use the white uncompensated connector
connected according to the picture.

Terminals ______________________________________

Inputs (0 to 20) mA, (0 to 10) V, binary inputs and the counter are
equipped with a two-part, self-locking WAGO terminal block. Insert
flat-bladed screwdriver to
rectangle terminal hole and push
screwdriver towards away from
you - contact is released. Insert
wire to released terminal (circular
hole behind the rectangular one)
and close the terminal by
removing the screwdriver.

The terminal block can be removed from the device without the need to
disconnect individual wires!

Connection of the binary and counter input:

17

Connection of the transmitter with voltage output:

Connection of the transmitter with the current output (active):

Connection of the transmitter with the current output (passive):

18

Alarm output

This output is accessible on terminals on the bottom side of the Multilogger.
Here are available these signals: OUT - open collector transistor, +5V
power supply from external power source and GND terminal (see also the
diagram in Appendix 2).

As the default, this output transistor is switched during selected alarms. It is
possible to set inverse behavior in the device's configuration (in this case
loss of external power supply acts as an alarm state). Activity of this output
can be canceled from the Multilogger keypad or remotely from a PC or
web. Remember to set a suitable alarms delay to prevent false activity of
this output.

It is possible to connect to this output:
 External audio alarm (optional accessory ATM-AC02) - connect the

+5 V terminal with the central lead of the CINCH connector of the audio
alarm unit and the OUT terminal with the outer lead of CINCH connector
(see the picture).

ATTENTION - the External audio alarm unit will not work if the

Multilogger does not have an external power supply.

 External alarm with its own power supply - make the connection

according to the following picture. Be careful do not exceed the
maximum allowed output current from OUT terminal (see the part
Technical Parameters). Use an external relay for higher currents.

19

20

Power supply of Multilogger

The Multilogger is powered from three AA batteries and optionally also from
an external +5 V DC power supply, which can be also used for charging the
batteries. A simplified schematics of the internal supply circuits is showed in
Appendix 2.

External power supply _____________________________

 External power supply can be connected to the Multilogger in

several ways:

a) to the power supply connector on the bottom of

Multilogger (for example, AC adapter included in basic
accessories)

b) to the terminal block of the RS232 interface (+5 V and

GND terminals)

c) via USB cable connected to PC (it will work only if the

USB port of the PC has current sufficiency to power the
Multilogger)

 No energy from the batteries is discharged if external source is

present.

 The Ethernet interface works only if an external power source is

present (it does not work when the Multilogger is powered from
batteries).

ATTENTION - never connect voltage greater than 5.5 V

to the external power supply input - it could damage the
device.

Batteries _______________________________________

 The new Multilogger is equipped with high-quality NiMH

rechargeable batteries; the device is preset to intelligent algorithm
to their continuous charging if external power is present.

ATTENTION - if you insert the non-rechargeable batteries

to the Multilogger, change the battery model to Alkaline in
the device configuration. Never charge batteries that are
not rechargeable!

 Charging batteries:

a) batteries can be charged if an external power source is

connected

21

b) the charging process will start if the NiMH charging

accumulators are selected in the device configuration

c) when the Multilogger is turned off, the batteries cannot be

charged

d) the Multilogger allows for two battery charging modes -

high current fast charging mode and low current slow
charging mode

 Slow low current charging mode is mainly used for stationary

installations. Batteries work as a backup source in case of
external power failure. Charging is automatically activated
after restoring of external power supply. During slow
charging device operates normally. Recharging of
completely discharged battery takes several days, however,
in normal operation, do not expect a completely discharged
battery. The charging process is indicated on the device

display using the corresponding symbol .

 Fast high current charging mode is mainly used for portable

applications. Discharged batteries can be recharged within a
few hours. The charging procedure has to be activated by
the service personnel:

a) If the Multilogger is on, switch it off. Connect an external

power supply to the device.

b) Press down and hold (approximately 3 seconds) the red

On/Off key on the Multilogger until you see “NiMH
charger” on the device display. The charging process is
started.

c) During fast charging Multilogger does not work in the

normal operating mode, does not take measurements and
does not communicate with the PC.

d) Once the charging process is completed, the Multilogger

displays the “Batteries charged” message and you can
turn it off.

e) The charging can be proceed within a temperature range

of 0 °C to +40 °C only. If the temperature is out of this
range, the charging process is automatically stopped.

22

 Battery replacement:

a) Switch the Multilogger off.
b) Remove the battery cover, take out the old batteries and

insert new batteries (take care for correct polarity). Battery
polarity is shown on its holder.

c) Switch the Multilogger on and make sure the set time is

correct (device menu View settings - General settings).

d) If you change the battery chemistry (rechargeable <=>

non- rechargeable), you have to make this change in the
device configuration also.

23

Keyboard operation

Control and indication parts

The front panel of the Multilogger includes 6 keys, 3 indication LED diodes
and a graphic display.

 The red key with the switch symbol is used for Multilogger turning on/

off. The MIN/MAX keys (with the arrows) are used for quick show of the
minimal and maximal measured values and also for moving through
menu items. Function of keyboard upper row buttons is defined by actual
description of each button on the lower LCD line display.

 The indication LED diodes inform us about the current state of alarms

and allows the operation personnel to observe this important information
even under low light and from a greater distance.

green LED no active alarms, “everything is OK”
orange LED one alarm is active
red LED several alarms are active or a system alarm

(device malfunction)

 The green LED (“everything is OK”) can be deactivated in device

configuration to save energy. The indication LEDs can be enabled
permanently or can be set to a blinking mode in battery mode to save
energy also. If the measured quantity has both alarms set into the same
direction, the LED diodes will indicate the current level of value: green ­everything is OK, orange - exceeding the lower limit, red - exceeding the
upper limit.

 The LEDs show an overview about all active alarms in the Multilogger. In

the device configuration, we can assign individual alarms to the LED
diodes for customizing the indication to our needs.

24

Basic display operation

Current measured values (or min/max) and their units are shown on the
device display. To make it easier, the short description of measured
quantity, the corresponding input number or a user description of the input,
can be optionally displayed. Using the VIEW multifunction key, you can
switch among these views on the display. You can choose from 3 different
display options: input number + short description of measured quantity,
input number without the short description of measured quantity and
channel number + short description of measured quantity. If the Multilogger
setup allows it, acoustic signaling of the currently active alarms can be
temporarily muted using the MUTE multifunction key.

Numerical values of the measured quantities can be optionally displayed in
three different font sizes according to user needs. When the smallest font
size is selected, up to 6 quantities can be displayed together. When the
largest font size is selected, the maximum number of the quantities that can
be displayed together is 2. The maximum range of numerical values on the
display is 7 characters (including the decimal point and sign "minus").
Exceeding this range is indicated as several dashes (------), recording,
however, is still running correctly.

When the Multilogger is set for measuring more quantities or calculated
channels, their viewing can be cyclically switched using the multifunction
CHANN key. The order of the displayed quantities can be modified as
needed.

The bell icon on the line of the measured value indicates an active alarm for
this quantity.

The status line of the display shows icons that indicate the current status or
device mode:

full memory of non-cyclic record

active recording

25

active recording of analog values (in the “during alarm

only” or “controlled by an external input” recording modes)

inactive recording of analog values (in the “during alarm

only” or “controlled by an external input” recording modes)

external power supply present (if the status line is

occupied by icons of a higher priority, it is not displayed)

minimal measured values are displays
maximum measured values are displays

approximately one half of the battery capacity remaining
battery is discharged, it needs to be replaced (alkaline

batteries) or recharged (NiMH accumulators)

battery charging in progress

the data memory limit exceeded

low voltage of the real time clock circuit detected, the time

could be incorrect!

alarm at least on one channel (the particular channel is

marked with a bell by the given value)

system alarm (alarm sources can be found in the System

information menu)

downloading of recorded data in progress (it is not

displayed for MIN/MAX view mode)

the Multilogger is being configured from a PC or via the

web (it is not displayed for MIN/MAX view mode)

26

Main menu

Some device settings can be viewed or modified directly on the device
using the keyboard.

Main menu items: 1. System Information

2. Viewing settings

3. Change the Display

4. Device Settings

5. Clear Min/Max

6. Clear Latched alarm

7. Device information

1. System information _____________________________

This menu item shows information that does not a part of device
configuration and that describes the current status of the Multilogger:

 System alarm sources specify, what problem has caused the

alarm, indicated by icon on the display.

a) The dash next to the item description means that this

item is not enabled for evaluation in the device
configuration.

b) The tick next to the item description means that this item

is enabled in the device configuration and that it is OK.

c) The exclamation mark next to the item description

means that this item is enabled in the device
configuration, however, it is not associated to the LED,
acoustic or alarm signal indication and it is in error state.

d) The bell next to the item description means that this item

is enabled in the device configuration, and it is associated
to the LED, acoustic or alarm signal indication and it is in
error state.

 System information items:

a) Remaining battery capacity (0-100%).
b) Data memory occupation in %.

27

c) Real time clock circuit state: tick - OK, exclamation mark

- low voltage of the real time clock circuit detected, the
time could be incorrect!

d) Activities of the Alarm out signal: tick - active, field

without a tick - inactive.

e) MUTE activated: tick - was activated (alarm is still active),

field without a tick - was not activated (or the alarm is
inactive).

f) Activities of EN signal: tick - active, field without a tick -

inactive.

g) battery voltage: range from 3.4 V (completely discharged

battery) to 4.5 V (new or just charged battery)
h) device internal temperature (affects the battery charging)
i) cold junction temperature of the thermocouples (only for

models with a thermocouple connector)
j) Multilogger firmware version.

2. Viewing settings _______________________________

Allows to view the following settings:
 record settings (recording interval, cyclic record, record on alarm,

record of the average and min/max values per logging interval)

 general settings (LCD backlight intensity, battery type, menu

language, date and time in the device)

 alarm limits (limit values, hysteresis and delay for each existing

channel and alarm. You can change channels using the arrow
keys).

 alarms indication - information about settings of alarm

signalization (optical, acoustic, Alarm Out) and if it is enabled to
temporarily deactivate the alarm signalization (MUTE function)

 memory occupation - information about alarm limit of data

memory occupation and signalization of this alarm (optical,
acoustic, Alarm out signal)

 Ethernet interface - information about LAN parameters (device IP

address, gateway IP address, network mask, IP address of the
DNS server)

28

3. Display settings _______________________________

Allows to set the parameters of the displaying:

 Font size (large, medium, small)
 Displaying input description of the measured quantity (yes, no)
 Order of the displayed channels (based on the input number,

based on the channel number, selection)

4. Device Settings ________________________________

Access to this submenu can be protected by a PIN1 code. Recording
is stopped after entering into editing mode. If no key has been
pressed for 5 minutes in the editing mode, the device restarts with the
last settings. The following parameters can be edited:

 recording parameters (recording interval, start/stop recording)
 general settings (LCD backlight activity&intensity, battery type,

menu language)

 alarm limits (limit values and alarms directions can be set for

each existing channel and alarm. You can switch from one channel
to another using the arrow keys).

 alarm indication - enable or disable of alarm signalization (optical,

acoustic, Alarm out signal). Setup of MUTE function - temporary
deactivation of acoustic and/or Alarm out signalization.

 memory occupation - limit and signalization (optical, acoustic,

Alarm out signal)

 Ethernet interface - network parameters (device IP address,

gateway IP address, network mask, IP address of the DNS server)

5. Erase Min/Max ________________________________

Erase of the Min/Max memory of either all measured quantities (“All

channels” option) or selected measured quantities (“Individual
channels” option) by the user. This function can be protected using

PIN2.
The Min/Max values will be erased automatically if the device
happens to be without any power supply, for example, when replacing
its batteries.

29

6. Deactivation of Latched alarm ____________________

If the “Latched alarms” function is enabled in the device configuration,
the active alarms are not reset when the measured values return
back to the allowed limits. Instead, they remain active until they are
deactivated by the user. They thus warn us that “something was
happening” during the monitored period, i.e. that the alarm limits were
exceeded. This function can be protected using PIN2.

7. Device information ____________________________

The 32-character user description of the Multilogger, device model
and its serial number are displayed here. The next screen displays a
summary of the configuration of individual inputs.

30

Connecting with the computer

You can connect the Multilogger to the computer through the following
communication interfaces:

 USB - fast connection for short distances (up to 5 m, communication

speed of 460,800 Bd). Connect the device to the computer using the
supplied cable, launch the SW and add Multilogger to the list of your
devices.

 RS232 - slow connection for distances of up to 15 m, designated mainly

for communication via GPRS modems (communication speed of
115,200 Bd / 230,400 Bd).

 Ethernet - fast connection for long distances. An external power supply

source has to be connected to the Multilogger (for example, a power
supply adapter). The device IP address is preset to 192.168.1.78, the
default sub-net mask is used as well as port 10001 (we recommend not
changing the port number if it is not necessary).

Configuration:
a) Verify if you can use the preset IP address with your

network administrator. If not, obtain a new IP address,

network mask, gateway address and address of the DNS

server from him/her.
b) Set these parameters on the Multilogger (Menu - Device

settings - Ethernet interface). Alternatively, you can

connect the Multilogger via USB interface and do the

above stated configuration using the Atal Vision software.
c) Connect the Multilogger into your LAN (Ethernet cable is

not included as device accessory).
d) Launch the Atal Vision software and add the Multilogger

to the list of your devices.

The Multilogger automatically identifies which communication interface is
connected and will use it for communication. When multiple interfaces are
connected, USB has the highest priority and Ethernet the lowest. For
example, if Multilogger has to work over Ethernet, no USB or RS232
interface can be connected to the device.

ATTENTION - we recommend using the supplied power
adapter for battery charging. When you use a USB charger, the
Multilogger may not communicate when the charger is
connected!

31

Software Atal Vision

Hardware and system requirements _________________

Recommended configuration: 1 GHz processor, RAM 2 GB,
Windows 7 or later, Net framework version 4

Minimal configuration: 1 GHz processor, RAM 1 GB, Windows XP
service pack 2, Net framework version 4

Program description ______________________________

The Atal Vision software can be used for device configuration and for
obtaining recorded data and currently measured values. The device
can be connected via USB, Ethernet or a serial port.

The program is available for free or as a paid version. The free
version allows work with one device at the same time and contains
the basic functions only. The paid version lets you connect any
number of devices that can work simultaneously (for example,
downloading data from several devices at the same time, having
multiple displays launched, etc.) and will also give you access to
advance functions (for example, charts, statistical overview of the
recorded data, custom display, export to the database, etc.).

Adding the Multilogger to the list of devices ______

The device can be added by clicking on the “add device” button (you
can find it under the “Welcome” menu, which is displayed upon the
first launch of the program, or also under the “Home page of the

device” menu, under the “Devices” option). A menu with a selection of
connection types is displayed (USB, Ethernet, Serial); for USB and
Ethernet, you can select device from the list of offered devices; for
serial line, you have to select a communication port, to which the
device is connected. Finally, confirm you selection using the “Finish”
button and the device will be added.

Automatic detection can be used for devices connected via USB.
Once the device is connected to your computer, the device is
automatically added to the list of devices (within about 5 seconds ­time necessary for the device initialization).

When connecting device via USB the baudrate is 460,800 Bd, while
RS232 the baudrate is 115,200 Bd.

32

How to work with the program ______________________

The main menu of the program is on the right side with items:
“Home”, “Devices”, “Files” and “Displays”. These components control
appearing bookmarks. Each item has its bookmarks, one of them
named “Home” is similar for all items. The other options are specific
for each item.

33

Device setup using software

Upon being the Multilogger switched on using the red button, the device
begins to take measurements and to record and evaluate alarms according
its user configuration. Complete configuration of the device can be done
using the Atal Vision software. Some parameters can be changed from the
device keyboard or from its web pages. When editing the Multilogger
configuration, the device normally works, however, access to some of its
functions is limited (downloading records, editing of the device configuration
by other users).

Device configuration basics

 Connect the Multilogger with your computer and launch the Atal Vision

software.

 If the software not communicated with this device yet, add Multilogger to

the list of your devices. For more information see part “CONNECTING
THE MULTILLOGER WITH THE COMPUTER”.

 If the Multilogger is correctly connected, the Device Home panel displays

its current status.

 Click on the Configuration button. The device configuration is loaded and

you can view or edit it.

 When you make a configuration change of any items, the SW goes to

the editing mode and limits the device access for other users now.

 Upon a long user inactivity period, the editing configuration mode is

automatically terminated.

 Finally, save the new configuration to the Multilogger (Apply changes).

Device configuration items

General - Information _____________________________

Here are displayed the basic information about the connected
Multilogger. It includes its name (Device name), which is used for
identifying your device and its measured values. The instrument can
be named according to of its application or you can use the default
name. The maximal length of the Device name is 32 characters - use
letters, numbers, underscore characters, etc. Moreover, this panel
states the serial number, model name and firmware version.

34

General - Preferences ____________________________

Here you can select language localization Language on the device

terminal, Default temperature unit °C/°F and, for some models,
Atmospheric pressure unit. If your model does not measure

atmospheric pressure but it is necessary to know it (for calculated
humidity values and CO2 concentration), you need to specify Ambient
average pressure.

For barometers, you can enter a correction constant for sea level
recalculation as the actual sea level pressure or altitude. Actual sea
level pressure can be obtained from, for example, nearby observatory
or nearby weather station.

General - Date and Time __________________________

Here you can set the date and time in Multilogger (Date and Time). In
the device is running the local time. Use TimeZone, if you can
determine its relation to UTC. This information will be available for all
timestamps from the device (record, online monitoring). The
Multilogger does not allow for automatic changes between the
summer and winter times.

ATTENTION - after change the date and time, the

recorded data in the Multilogger will have to be deleted!

General - Advanced - Energy ______________________

The Multilogger running in the standard mode will measure all inputs
once per second (with the exception of measuring CO2 concentration,
which will be measured every 2 minutes). The advantage is a fast
response of the device, the disadvantage is its higher current
consumption if the device is powered from batteries only. If you
operate the Multilogger from batteries for a long time and you do not
need a fast response time, you can use the energy saving mode
(Energy saving mode), under which the device consumption from the
batteries will significantly decrease, however, the measurement
interval will be extended to 10 seconds (10 minutes for CO2
concentration). Consumption details can be found in the Technical
Information.

35

General - Advanced - Device start ___________________

Here you can disable the “Off key” of the device.

General - Advanced - LCD Display __________________

These settings are used for optimizing the backlight of the display in
relation to your application. As a default, the Multilogger is set in a
way that the backlight (LCD backlight activity) is activated only for
several seconds upon the last key pressing. If, however, you need to
ensure a good visibility of the display in the mains powered fixed
installation, turn on the backlight activity only when the external power
supply is on and choose a suitable intensity (LCD backlight intensity).
If the backlight is permanently turned on while Multilogger is powered
from the batteries, they discharge relatively fast, therefore do not use
this setting. Turn the backlight off for applications, for which is
required the longest battery life.

General - Advanced - Peripherals ___________________

Here you can set the activity interval and baudrate of the external
GPRS modem, which is connected to the RS232 interface of the
Multilogger.

If you set the interval of the turn-on procedure of the GPRS modem,
the Ethernet interface of the Multilogger is deactivated.

Record ________________________________________

This options are used for controlling the record functions of the
Multilogger. Recording can be turned on and off as needed
(Recording On/Off). However, if the record is turned off and then you
turn it on again, this takes up 0.1% of the free memory capacity. Use
the Cyclic record if you require the device to continue the recording
even when the data memory is completely full. In this case, the oldest
data are replaced by new ones. If you do not use this option, the
recording will stop once the memory is full. Another important
parameter is the Recording interval. It can be set from 1 second to 24
hours (see the Technical Information). The recording is performed in
integral multiples of a set interval. For example, if you turn the device
on at 5:05 a.m. and if you have set the logging interval at 1 hour, the
first data will be recorded at 6:00 a.m., next ones at 7:00 a.m., etc.

36

Recording can be continuous or, alternatively, records can be taken
only if any measured quantity is in the alarm state (the system alarms
does not trigger recording). Moreover, Multilogger with binary input
No. 3 also offer the option to control the recording by the status of this
binary input. These settings can be performed in the section
Recording mode.

By default, the device records the actual values at the time of the
recording interval. However, if continuous recording is on (see
above), you can select recording of average, minimal and maximal
values during recording interval. These settings can be performed in
the section Recorded values.

The last thing to do when configuring the recording is to select the
measured quantities that you want to record (see the Inputs panel
described below).

ATTENTION - upon changing cyclic  non-cyclic

recording, you will need to erase all the recorded data

saved in the device!

Alarm events - Signalization ________________________

The Multilogger allows to evaluate alarm states, which can come from
the measured quantities or which can signalize some device problem
(exceeding of the data memory occupation limit, system alarms). For
each alarm it is possible to assign the method of their signaling to the
user.

Alarms can be signaled using the LED diodes directly on the
Multilogger (Optical signalization - LED). Since the Multilogger can
work in the battery mode, additional options are available for
minimizing the current consumption. For a state without an alarm can
be selected green LED indication. When the device is powered from
batteries, you can select more energy economical mode, under which
the LED diodes only shortly blink in the case of an alarm.

In addition, the alarm can be signaled acoustically with characteristic
sound that is repeated at regular interval. Service personnel can
easily confirm the acoustic signal and thus make it silent until a new
alarm occurs. These settings can be performed in the section Mute of
signalization.

37

Alarm signaling can be also performed using the ALARM OUT output.
Upon an alarm, the Multilogger can switch on the open collector
transistor of this output in accordance with the description in Chapter
“ALARM OUTPUT”. This transistor can be optionally switched on or
switched off when there is an alarm. The Mute function can be also
used for this output.

Alarm events - Preferences ________________________

In the standard mode, the alarm exists if the measured value is out of
limits, and the alarm becomes inactive if the measured value returns
to its limits. In some cases it is suitable that the user, who comes to
the device after a longer period of time, can easily make sure that no
alarm has occurred while he/she was gone. If you activate the
Latched alarms option, all alarms that occur in the Multilogger will
remain active until the service personnel is not confirmed them.

Here you can also allow remote erasing of the alarm memory and
remote deactivation of alarm signalization from the software Atal
Vision or from the web (Remote Mute & Erase of Latched alarms);
moreover, you can permit or forbid alarm deactivation from the device
keyboard (Local Mute enabled). To protect access to these functions,
you can use the PIN2 code (Security panel).

Furthermore, you can allow alarm evaluation here only on certain
days of the week and within defined range of hours per day. It is not
suitable to combine this setup with the above described Latched
alarms option.

Alarm events - Mute of signalization _________________

The Mute function is used for deactivating alarm signalization by the
user. It can be optionally applied to acoustic signalization, the ALARM
OUT output or both. It can be performed from the keyboard, from the
web or from the software Atal Vision. To protect access to these
functions, you can use the PIN2 code, which the operation personnel
must enter. This function deactivates enabled alarm signalizations
until a new alarm occurs. The deactivation can be permanent (until a
new alarm occurs) or temporary (if the alarms remain active even
after selected time out, the signalization is restored).

38

Alarm events - Memory occupation __________________

If you need to indicate exceeding of your specified limit of the data
memory occupation, use the setup in this section. The signalization
can be selected as optical (red LED diode), acoustic, or by the means
of the ALARM OUT output activation or sending email to selected
recipients.

Alarm events - System failure ______________________

The options in this section allow for setting up the System alarms
which respond to the Multilogger or probes malfunction. The
signalization can be selected as optical (red LED diode), acoustic, or
by the means of the ALARM OUT output activation or sending email
to selected recipients.

The Multilogger can respond to the following states:

a) Measurement error on any channel ... for example, a

disconnected or damaged probe
b) Device configuration error ... an unexpected device

configuration error
c) Selftest error ... empty battery
d) External power lost ... failure of the external power supply

source

Security ________________________________________

The Multilogger allows an easy security option by the means of PIN
codes:

PIN1: protection against unauthorized changes of the

device configuration (from a PC or device keyboard),
erasing of data memory and counter erasing

PIN2: protection against unauthorized alarm deactivation

(Mute), confirmation of alarm memory (Latched
alarms) and erasing of the Min/Max values

39

Ethernet - General _______________________________

Here, you can make the basic connection setup of the Ethernet
interface. To obtain some information, you will need to contact your
computer network administrator. First of all, you have to find out if you
are going to use a fixed IP address or if it will be assigned by the
DHCP server in your network. Based on the answer, select the
appropriate option (Obtain an IP address automatically - DHCP). If
you do not use DHCP, enter a unique IP address of the Multilogger,
assigned to it by your network administrator (IP address). By default,
the device address is set at 192.168.1.78. Keep the port number
(Port) at 10001, unless you have a reason to change it. If
communication is performed between different network segments,
you need to enter the gateway address (Default gateway). If you use
domain names instead of IP addresses in some of the following
setups, you have to enter the IP address of your DNS server (DNS
Server IP). Under standard networks use the default Subnet mask,
which is set automatically pursuant to class A, B or C. If you use a
network with a non-standard range, the mask have to be entered
manually. You usually do not have to change the size of the block
transmitted through the network (MTU size), thus keeping it at 1,400
bytes.

Ethernet - Email - General _________________________

Here you can do the basic email setup. If you want to use the sending
of warning emails on alarms, switch this function on (Email sending
ON). Next, set the IP address or SMTP server or its domain name
(SMTP Server), port (SMTP Server port) and, if the server requires
authentication, enter your login name and password (Authentication).
Continue by entering addresses of up to three recipients of the
warning emails (Email recipient #1 - #3) and, finally, enter the
address of the email sender (Sender). This is usually the same as the
user name in the SMTP authentication.

Ethernet - Email - Preferences _____________________

Here you can set further email parameters. If you want the
Multilogger to send the regular emails during the active alarm, enter
of their interval (Repeat alarm sending interval). If you enter 0, the
email is sent only upon the start activity of alarm and upon end its
activity. Moreover, you can set sending of a regular informative email,
which informs the user that the Multilogger is working properly (Keep
alive email sending).

40

You can use shortened emails (Short email) especially for forwarding
them as SMS messages to mobile phones. You can also insert your
own comments to the emails: if the alarm appears (Alarm note), if the
alarm expires (Clear alarm note), in the case of system alarm
(System alarm note) and in the case of exceeding the memory
occupation limit (Memory overflow note).

Ethernet - Datalink _______________________________

The Datalink protocol is used for connecting the Multilogger with the
database system. Connection to the server is opened by the
Multilogger in regular intervals. Further control of the communication
is then performed by the server. If you want to use this function, you
have to allow it (Datalink On). Next, enter the IP address or Datalink
server or its domain name (Datalink address), communication port
number (Datalink port, default is 10002), connection opening interval
(Datalink interval) and the database key (Datalink key). If you require
to send the irregular alarm messages using this protocol, you need to
allow asynchronous transmissions (Asynchronous communication).
Moreover, you can also set here the data downloading interval and
possibility of erasing recorded data in device.

Ethernet - Web __________________________________

The Multilogger has its own web pages, where you can monitor
currently measured values and alarm states, and where you can
change some configurations. First of all, you have to allow the
website option (Web pages On). If necessary, you can change the
port number (Web server port), which is set at 80 by default. If you
want to make configuration changes through the website, you have to
allow this function (Use web for device configuration).

Ethernet - SNMP ________________________________

The Multilogger allows for uploading the online measured values and
alarm states using the SNMP protocol. This protocol is always active.
Enter the password for reading (SNMP Read Community password).
The MIB tables can be downloaded from the web of the
manufacturer.

41

Inputs _________________________________________

Here you can specify the quantities that you will measure on every
one inputs, their recording and alarm states. You can see a simple list
of all inputs and measured quantities on the screen.

First of all, specify the probe or signal types connected to each input
(Settings button). Here you also choose the measured quantities that
you will acquire from this probe or input. You can acquire multiple
quantities at the same time from some probes (for example,
temperature, relative humidity, dew point, etc.). However, you can
also decide not to use a specific input, in this case click on Clear
button or remove all set measured quantities. You can name the input
by your own name (Input name), which you will then see by all
measured values. Once you are done with this configuration, you can
return back to the list of inputs and measured quantities.

Now, when you have correctly set your inputs and selected measured
quantities, you can configure them in more details using the Edit
button. For each measured quantity, you can choose if it should be
recorded (Recording) and if you wish to use the default setting (Basic
settings - default) of the physical unit (6 characters), short description
of the measured quantity (4 characters) and number of decimal
places. However, you can also opt for your own setup (Basic settings

- custom) and enter the stated items manually. If you need the
convert the measured values to different values using a two-point
linear transformation, turn on the User calibration function (User
calibration). For example, you can use it for converting current values
measured using the current loop to a different physical quantity or for
applying recalculation to the measured values.

Example of user calibration settings for a sensor with a

current output (4 to 20) mA connected to the current input

of the Multilogger, with a range of the sensor between -30

and +80 °C:

Upper point B: Input value: 20 will be shown as 80

Lower point A: Input value: 4 will be shown as -30

In the next step, set alarms for individual measured quantities. You
can set up to 2 alarms for each measured quantity (Alarm 1 and
Alarm 2 buttons). Each alarm has to be enabled first (On/Off).

42

Next, select if the alarm occurs upon exceeding or dropping under the
given limit value (value is greater than / value is lower than) and enter
this limit. For binary inputs only define the state of the input. Next, you
need to specify the alarm delay (for the duration of), which is used for
eliminating short-term exceeding of the limit value. Hysteresis has a
similar function (Alarm hysteresis) - it is used to prevent alarm
oscillation when the measured value fluctuates nearby the alarm limit.
We recommend not to set it at zero. We have hereby completed the
setup for alarm occurrence. Now we just need to specify if the alarm
will be indicated optically on the Multilogger (Optical signalization -
LED), acoustically (Activate internal acoustic signalization), by the
ALARM OUT output (Activate ALARM OUT output) or by submitting a
warning email (Send email message ...).

In some application, we want to calculate other values from the
measured ones, and we want to be able to record them and to create
alarm states. The Multilogger allows this by the means of several
simple mathematical operations (difference, linear equation,
multiplication and division). This way, you can, for example, easily
calculate the difference between the surface temperature and the
dew point of the air. Calculated values can be defined on the section
with a list of inputs and measured quantities by clicking on the given
line button Calculated - Add. Their further settings are specified
similarly to the measured quantities (with the exception of the User
calibration, which cannot be used for the calculated quantities).

43

Applications notes

Recommended settings for the portable application______

In this application, the Multilogger is powered from batteries and a
fast response time and an easy battery recharge after the
measurement are required. Recorded data are downloaded after
measurement.

We recommend to use the Multilogger with NiMH accumulators;
specify the following device configuration:

 NiMH accumulators (if they are installed).
 Do not turn on the Energy saving mode. The Multilogger will

perform measurement with a fast sampling (1 second for all
quantities with the exception of CO2 concentrations, which will be
measured every 2 minutes).

 Switch off the display backlight or allow it only upon pressing a

key. Active backlight drastically reduces the battery life. However,
even when it is permanently on, the Multilogger with fully charged
batteries will operate about one week with the lowest backlight
intensity (25%).

 Switch off the optical alarm signalization using the LED diodes or,

if necessary, allow only the orange and red LED diodes working in
a flashing mode while the Multilogger is powered from batteries.

 If you are not going to use the alarm acoustic signalization, turn it

off.

For measurement of room temperature and humidity using the
Multilogger powered by batteries, short probes without cable are
recommended (TRHD-103, TRHD-102 and 200-80/M models). When
these probes are used, the device is the compact unit.

Empty batteries can be easily recharged once the measurement is
completed using the fast charge option.

Recommended settings for the stationary application
permanently connected to the Ethernet _______________

In this application, the Multilogger is powered from an external power
supply most of the time. It is required that the measurements and
recordings continue even during any power supply failure. Once the
power supply is restored, the data acquired during the given power
failure must be available and the batteries have to be automatically
recharged.

44

We recommend to use the Multilogger with NiMH accumulators;
specify the following device configuration:

 NiMH accumulators (if they are installed).
 Do not turn on the Energy saving mode. The Multilogger will

perform measurement with a fast sampling (1 second for all
quantities with the exception of CO2 concentrations, which will be
measured every 2 minutes).

 Switch on the display backlight as needed. If it is necessary to

make the measured values on the Multilogger well visible all the
time, turn the backlight on only when the device is powered from
an external power supply.

 Use the optical alarm signalization using the LED diodes as

needed.

 Set the acoustic alarm signalization as needed.
 If you want to operate the Multilogger “remotely”, disable “Off key”

on its keyboard (Atal Vision software, option General - Advanced ­Device start). You will thus prevent unauthorized or unwanted

device turn-off by unqualified personnel. In these cases, it is also
advisable to limit access to the device configuration from the
keyboard using PIN codes.

 Attention - if you use an external audio unit powered from the

Multilogger, it will not work during external power supply failure!

For measuring of room temperature and humidity using the
Multilogger powered from an external power supply and with an
active Ethernet interface or charger, probes with cables are more
suitable. Short probes without cables (TRHD-102, TRHD-103 or 200­80/M) can be used but the measurement accuracy will worsen due to
the waste heat created by the Multilogger. The other sources of the
waste heat are there - battery charger or the display with backlight
that is permanently turned on (especially in the case of higher
backlight intensities). The measurement error can reach
approximately +1 °C for the device installed on an inside wall without
forced ventilation.

After an external power failure, when the device was running from the
batteries for a while, the batteries are automatically recharged by low
current as soon as the external power is restored.

45

Recommended settings for a long time battery powered
application ______________________________________

In this application, the Multilogger is powered only from batteries and
a fast response to changing measured quantities is not required,
however, it is required that the device runs from the batteries as long
as possible. Recorded data are downloaded after measurement.

We recommend to use the Multilogger with NiMH accumulators;
specify the following device configuration:

 NiMH accumulators (if they are installed).
 Switch on the Energy saving mode. The Multilogger will perform

measurements with a slow sampling (10 second for all quantities
with the exception of CO2 concentrations, which will be performed
every 10 minutes).

 Switch off the display backlight or allow it only upon pressing a

key. Permanently activated backlight drastically reduces battery
life.

 Switch off the optical alarm signalization using the LED diodes or,

if necessary, allow only the orange and red LED diodes working in
a flashing mode while the Multilogger is powered from batteries.

 If you are not going to use the alarm acoustic signalization, switch

it off.

For measuring of room temperature and humidity using the
Multilogger powered by batteries, short probes without cable are
recommended (TRHD-103, TRHD-102 and 200-80/M models). When
these probes are used, the device is the compact unit.

Empty batteries can be easily recharged once the measurement is
completed using the fast charge option.

How to set the Multilogger for measuring of calculated
humidity values or CO2 concentrations ________________

You can measure other humidity quantities on the input, with
humidity-temperature probe of the Digi line and work with them. You
can measure one as well as multiple humidity quantities together. For
some calculated humidity values and for CO2 concentrations, you
need to know the value of the current atmospheric pressure.

46

If the Multilogger is not equipped with an internal pressure sensor,
you have to enter this value using the SW in the device configuration,
item General - Preferences. You can enter either the current
pressure value at the given location (without conversion to the sea
level) or the current altitude.

How to set the Multilogger for measuring the difference of
two temperatures _______________________________ _

To do that, use the calculated measured quantity (Calculated). First of
all, select input quantities that will be used in the calculation formula.
Next, set the other items analogically to the other measured
quantities. I addition to the calculating of difference, other simple
mathematical operations are possible.

System alarms and how to work with them_____________

System alarms are used for diagnostic functions of the device and
probes connected to it. A system alarm signals a malfunction or
damage of the Multilogger or its probe. Unlike the alarms from
measured quantities which signal the problem of the technology that
the Multilogger monitors. A system alarm can be reported to a
different person than alarms from the measured quantities.

What is the inversion setup of the ALARM OUT output ___

By default, the ALARM OUT output is set in a way that its output
transistor is switched on during alarm state. For better security, this
output can operate inversely, i.e. the transistor is switched on when
there is no alarm and switched off during alarm state. In this case,
disconnecting a cable, turning the device off, etc. represent an alarm.

Backup and restore of device configuration ____________

If you have set the whole system and you need to back up its setting
with the possibility to upload it to the same or even different
Multilogger, download recorded data from device. The saved file
contains complete configuration of the Multilogger, which you can
upload back to the device.

47

How to set a variable alarm limit _____________________

In some applications, you need the alarm limit to depend on another
measured value.

Example: we require that the alarm must be activated when internal

temperature T

int

becomes by 3 °C higher than exterior

temperature T

ext

. In this case add another calculated
quantity that will be the difference of both measured
temperatures T

int

- T

ext

. The alarm limit for this quantity

shall be 3 °C. The alarm then occurs if (T

int

- T

ext

) > 3 °C.

Selftest error ____________________________________

The selftest is used for monitoring the state of the batteries. If the
Multilogger reports this error, the batteries are empty. You can check
the battery status in the System information menu or in the software
Atal Vision on the Device home page. If the battery voltage drops
under 3.45 V, the Multilogger reports a self-test error. A drop of the

power supply voltage is also indicated by the given symbol on
the device status line. The batteries have to be recharged or
replaced.

Measurement accuracy problems ____________________

In a majority of cases, incorrectly measured temperature and relative
humidity values are caused by an incorrect position of the probes or
measuring method. Some comments related to this topic are shown
in the next Chapter, Operation and maintenance recommendations.
When measuring room temperature and/or relative humidity using a
short probe without a cable and with permanently active Ethernet
interface, measurement accuracy can slightly worsen due to the
waste heat generated in the device. It especially problem of stationary
installations on the wall with insufficient air flow.

When measuring temperature using thermocouples, you have to
make sure that neither the measuring ends, nor conductors are
connected to any conductive parts that may cause unwanted
couplings. This may, in exceptional cases even cause damage the
device.

48

A similarly for sensors with a voltage or current output - unwanted
couplings can cause incorrect measurements.

If the Multilogger reports an error state, you can find more information
in Appendix 1 - Selected error messages.

Another group of problems are random spikes of the measured
values. Most commonly, they are caused by a source of
electromagnetic interference located in the proximity of the device or
cables. Furthermore, you have to also make sure that the insulation
of the cables is not damaged and that conductors thus do not make
any incidental connections with other metal parts.

PC communication problems _______________________

If the Multilogger communicates via USB interface, do not use cables
longer than 5 meters. Connecting and disconnecting the cable while
the communication is in progress can cause temporary unavailability
of the USB device in the computer. In this case, it may be necessary
to close and re-launch the SW (including the communication service).
If this does not help, restart the computer.

If you communicate with the Multilogger via Ethernet interface, make
sure that nothing is connected to the USB port of the device. Some
USB chargers can deactivate the RS232 and Ethernet interfaces. Use
the supplied AC adapter to external power of device and for charging
the batteries.

If Multilogger does not communicate via Ethernet, try USB
communication. If that is working, some settings of the Ethernet
interface will most probably be incorrect (such as the gateway
address etc.).

49

Operation and maintenance recommendations

Device operation in various applications _______________

Before application it is necessary to consider if Multilogger is suitable
for required purpose, adjust optimal configuration and create
instructions for its periodical metrological and functional inspections.

Since the Multilogger can be powered from the power mains, it is
necessary (depending on the character of the application) to
secure the appropriate electric revision of its installation and its
regular inspections.

Unsuitable and hazard applications: The Multilogger is not designed
for applications, where failure of operation could cause endanger of
health or function of other life supporting devices. In applications,
where failure of Multilogger could cause loss on property, it is
recommended to amend system of independent indication device to
monitor this state and avoid damages. You have to be especially
careful with regard to the alarm output with a connected external
audio unit, functionality of which is depended on external power
supply source.

Locations of temperature sensors: place them to locations with
sufficient air flow and where most critical point is supposed (in
accordance with application requirements). The sensor has to be
sufficiently inserted into the measured area or sufficiently connected
to it in some other way, thus preventing the measured values to be
influenced by undesired heat coming from the conductors. When

monitoring temperature in an air-conditioned warehouse, do not place
the sensor in the path of the direct air flow from the air-conditioning
units. The thermal field can sometimes be very inhomogeneous (for
example, in large chamber refrigerators) and the deviances can reach
up to 10 °C. Similar deviances can be found in deep freezers (used,
for example, for freezing blood etc.).

Locations of humidity sensors depend on the application
requirements. Measuring humidity in the refrigerators that do not have
an additional humidity stabilization system can be very problematic.
When turning a cooling system on/off, significant humidity changes
amounting to several tens of percentage points can occur even
though the mean humidity value is correct.

50

Recommendations for metrological verification _________

Metrological verification is performed in accordance with application
requirements specified by the user. In some cases, calibrations must
be performed by the accredited laboratory. The manufacturer
recommends to perform these verifications once a year.

Note: accuracy of Multilogger input means accuracy of input itself

without probes.

When verification of thermocouple inputs it is necessary to take into
account that cold junction compensation is perform inside of
Multilogger, where temperature is somewhat higher than ambient
temperature on the outer connector. This fact can sometimes cause
problems when performing verifications using the electric simulators
of the thermocouples. The best way is to do the temperature
verification together with the thermocouple.

Recommendations for periodical inspections ___________

The manufacturer recommends to perform regular inspections of the
system, into which the Multilogger is included. The interval and range
of the inspections depends on the particular application. The following
inspections are recommended for stationary installations:

 metrological verifications
 regular revisions and inspections subject to the intervals specified

in the corresponding standards

 assessments of all problems that occur since the last inspection
 visual inspection of the device and checking of the connectors
 device functionality inspections (i.e. the functions used for a given

application):

a) verification of data transfer to computer
b) verification of alarms - change input value to activate

alarm and check display message and alarm
signalization (if used)

c) check the battery voltage (in device menu)

51

 Verification of cabling - check the connection quality of cables,

check visually entire cable length for damage and the route of
cables for interference, especially whether some parallel power
wires are not near.

 Visual inspection of sensors - perform their visual inspection and

make sure no water has leaked inside the sensors; moreover,
verify that their locations are suitable from the perspective of
measuring accuracy as well as possible interference.

 Make a verification protocol.

Service recommendations _________________________

Technical support and service are performed by the devices’
distributor. Its contact is given in the warranty certificate, supplied with
the Multilogger.

ATTENTION - damage due unauthorized manipulation
will cause the warranty to expire!

Placing out of operation after the end of the device life ___

Disconnect the power, remove batteries and return data logger to the
supplier or specialized company as electric waste.

52

Technical parameters

Power supply

The Multilogger is powered from batteries located under the removable
cover on the rear side of the device. An external power supply source can
be also connected to the Multilogger. When the device is connected to an
external power supply, the batteries are not used. If you want the Ethernet
interface to work, this external power supply voltage has to be connected.
Batteries can be recharged in the device.

Batteries _______________________________________

Recommended battery type:

3x AA NiMH rechargeable batteries Sanyo ENELOOP
1,900 mAh, 1.2 V

Alternative batteries:

3 x AA alkaline battery 1.5 V

________________________________________________________________________________________________

When alkaline batteries are used, it is necessary to disable the
charger in the device configuration, i.e. to set the Multilogger for
Alkaline batteries.

Operating time of fully charged NiMH batteries:

> 1 month in the standard measuring mode
approximately 6 month in the power saving measuring
mode

________________________________________________________________________________________________

Applies to Multilogger without CO2, with fully charged batteries
of the recommended type; when the display backlight, LED
indication and acoustic signalization are turned off.

> 3 weeks in the standard measuring mode
approximately 3 month in the power saving measuring
mode

________________________________________________________________________________________________

Applies to Multilogger with CO2 with fully charged batteries of
the recommended type; when the display backlight, LED
indication and acoustic signalization are turned off.

Current consumption when the Multilogger is turned off:

< 15 uA

53

Backing up of date and time in the Multilogger:

< 5 minutes after removing the batteries and with the

device turned off

________________________________________________________________________________________________

If the Multilogger is without a power for a longer time, the date
and time settings in the device could be lost and will have to be
set up again. When the Multilogger is connected to an external
power supply, the date and time are not lost when batteries are
removed.

External power input ______________________________

Power voltage:

+5 V DC (+4.9 V to +5.5 V)

Maximum voltage applied to the power input:

+ 6 V DC max.

________________________________________________________________________________________________

Absolute limit above which may be damaged the device!

Current consumption when the Multilogger is turned on:

approximately 200 mA

________________________________________________________________________________________________

It is valid when the Ethernet interface is active and the battery
charger is turned off.

Current consumption from external power input when the
Multilogger is turned off:

approximately 1.5 mA

External power supply connection possibilities:

 Circular power connector 5.5 / 2.1 mm
 +5 V and GND terminals at the RS232 interface
 USB cable

________________________________________________________________________________________________

The Multilogger does not allow increase the supply current of
the PC USB interface. Therefore the fast battery charging does
not have to work correctly from USB.

Battery charger __________________________________

Slow charging mode current:

approximately 10 mA

54

Fast charging mode current:

approximately 350 mA

________________________________________________________________________________________________

Fast charging has to be activated by the Multilogger user.
During the fast charging, the Multilogger does not take any
measurements nor recording and does not communicate with
the computer.

Fast charging time:

Up to 6 hours

Fast charging restriction:

Allowed in ambient temperature from 0 °C to 40 °C.

ALARM OUT output

This output has been designed, for example, for external acoustic
signalization or a telephone dialer. The way of its activation can be
programmed when configuring the Multilogger. The open connector
transistor (OUT), external power voltage (+5 V) and common terminal
(GND) are available on the device terminals. The wiring of the output
circuits is shown in Appendix 2.

Maximum current of OUT terminal (output switched on):

100 mA

Impedance of switched on output (OUT-GND):

approximately 10 Ω

Maximum tolerant voltage (OUT-GND, output switched off):

12 V DC

Supply voltage at +5 V terminal:

+5 V DC, internal impedance 33 Ω

________________________________________________________________________________________________

This voltage is available when the Multilogger is powered from
an external power supply only.

The external audio unit (optional accessory ATM-AC02) is designed as wall
mounted and it is connected using the CINCH connector (outer lead: OUT,
central lead: +5 V).

55

Communication interfaces

The Multilogger is equipped with USB, Ethernet and RS232C interfaces
with automatic detection of a connected cable. Only one of these interfaces
can be used for communication at one time. The USB interface has the
highest priority (if the Multilogger is connected via its USB port, the other
two interfaces are automatically disabled) while the Ethernet interface has
the lowest priority (for its proper function, it is necessary that neither the
RS232C nor the USB interfaces are connected). The Multilogger does not
allow PoE.

RS232C _______________________________________

Communication signals:

RxD, TxD, GND

Galvanic isolation:

Interface is not galvanically isolated

Connector RS232:

Terminal block

Maximum cable length:

15 m, only in interior areas

Baudrate:

115,200 Bd, optionally 230,400 Bd

USB ___________________________________________

Compatibility:

USB1.1 and USB 2.0

Connector USB:

mini USB

Vendor ID:

0403

Product ID:

6001

Baudrate:

460,800 Bd

56

Ethernet _______________________________________

Compatibility:

10/100 MBit Ethernet, galvanically isolated

Connector for Ethernet:

RJ45

Measuring, data memory and real time clock

Measuring interval (except CO2):

1 s in standard mode (default)
10 s in the energy saving mode

CO2 measuring interval:

2 minutes in standard mode
10 minutes in the energy saving mode

Recording interval:

1 s, 2 s, 5 s, 10 s, 15 s, 30 s,
1 min, 2 min, 5 min, 10 min, 15 min, 30 min,
1 hour, 2 hours, 3 hours, 4 hours, 6 hours, 12 hours,
24 hours.

Memory capacity:

Up to 1,000,000 values for non-cyclic record
Up to 600,000 values for cyclic record

Duration of data downloading:

< 5 minutes for a 100% data memory occupation using

the USB or Ethernet interface

Real time clock stability:

max. 200 ppm ± 5 ppm/year at 23 °C ± 10 °C

Electromagnetic compatibility

The device is tested according to standard EN 61326-1: 2006,
Article 6, Table 1.

Emission:

EN 55011: class B

57

Immunity:

EN 61000-4-2: class A (4/8 kV)
EN 61000-4-3: class A (3V/m)
EN 61000-4-4: class A (0.5/1 kV)
EN 61000-4-5: class A (external power supply only)
EN 61000-4-6: class A (3 V)

Operation and storage conditions

Operation temperature:

(-10 to +60) °C

Operation humidity:

(5 to 85) %RH without condensation

Storage temperature:

(-30 to +80) °C

Storage humidity:

(5 to 90) %RH

Mechanical characteristics

Dimensions (h x w x d):

178 x 95 x 37 mm without connected cables and
connectors

Weight:

approximately 380 g, including batteries

Protection:

IP20

Connecting terminal block

two-part, maximum cross-section of the conductor:

1.5 mm2

Included mounting accessories:

EML-AC01 - wall holder for Multilogger

58

Optionally mounting accessories:

EML-AC02 - lockable wall holder for Multilogger
EML-AC03 - magnetic holder for Multilogger
EML-AC04 - 18 mm probe holder for Multilogger

Technical parameters of the inputs

The Multilogger is equipped with 4 inputs (connectors) for connecting
external probes or signals. Moreover, some models include internal
atmospheric pressure sensor and/or a CO2 air concentration sensor.
Connectivity, input ranges and accuracy are determined by connector types
which are specific for each model. Required measured quantities can be
selected for each input using the Atal Vision software. These quantities can
be recalculated using two-point linear transformation, displayed, recorded
to the memory or used for alarming. In addition, the Multilogger allows
creating of calculated quantities from the measured values using simple
mathematical operations. The inputs are not galvanically isolated and
therefore it is not recommended to connect them to other measuring
systems.

The Multilogger allows measure temperature not only in °C, but also in °F.
If you use °F, the below stated ranges and accuracy have to be
recalculated to °F.

Universal input with a MiniDIN connector ______________

Models equipped with this input:

EML-01

Input 1

Input 2

Input 3

Input 4

EML-03

Input 1

Input 2

EML-04

Input 1

Input 2

EML-05

Input 1

Input 2

EML-06

Input 1

Input 2

EML-07

Input 1

Input 2

EML-09

Ext. CO2

*

Input 2

Input 3

Input 4

* this input is also equipped with a MiniDIN connector, however,

it is not a universal input. It has been exclusively designed for
connecting an external probe for measuring CO2 concentration
in the air.

The following devices can be connected to the input with
the MiniDIN connector:

59

 Digi /M digital probe for measuring temperature and

humidity.

Measured quantities:

Temperature
Relative humidity

Calculated quantities:

Dew point

_______________________________________________________________________

For negative temperatures, the Multilogger
calculates a dew point, no frost point.

Absolute humidity
Specific humidity
Mixing ratio
Specific enthalpy

Measurement range and accuracy:

According to the connected probe.

Recommended cable length:

maximum of 15 meters

 Pt1000 intelligent RTD probe for temperature

measuring

Measured quantity:

temperature from the RTD sensor
Pt1000/ 3850 according to EN 60751

Range:

(-200 to +600) °C

Accuracy (without probes)

±0.2 °C in the range of (-200 to 100) °C
±0.2 % from the measured value in the range

of (100 to 600) °C

Resolution:

better than 0.01 °C *)

Measuring current:

approximately 0.5 mA within an impulse about

60 ms

Recommended cable length:

maximum of 15 meters

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Pt1000 RTD probe for temperature measuring

The input parameters are identical to the above
described Pt1000. For these probes, you have to
compensate the cable length using the User
calibration manual settings. The connector wiring
is shown in Appendix 4. The manufacturer

60

recommends to preferably use the Pt1000
intelligent probes.

Universal input with a miniature thermocouple connector __

The input is equipped with a white, uncompensated miniature
thermocouple connector. Compensation of the cold junction
temperature is performed by measuring the temperature inside
of the device in the area between the input connectors. The
inputs are not galvanically isolated from each other, nor from
other signals connected to the device. In order to secure correct
measurements, you need to prevent undesirable coupling.
Furthermore, the Multilogger has to be placed in its working
position and temperature stabilized.

Models equipped with this input:

EML-02

Input 1

Input 2

Input 3

Input 4

EML-03

Input 3

Input 4

The following devices can be connected to this input:

 Thermocouple of the “K” type (NiCr-Ni)

Measured quantity:

temperature

Range:

(-200 to 1,300) °C

Accuracy (without probes)

± (0.3% from the measured value + 1.5 °C)

Resolution:

better than 0.1 °C *)

Cold junction:

compensated in the temperature range of (-10

to 60) °C

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Thermocouple of the “J” type (Fe-Co)

Measured quantity:

temperature

Range:

(-200 to 750) °C

Accuracy (without probes)

± (0.3% from the measured value + 1.5 °C)

Resolution:

better than 0.1 °C *)

61

Cold junction:

compensated in the temperature range of (-10

to 60) °C

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Thermocouple of the “S” type (Pt10%Rh-Pt)

Measured quantity:

temperature

Range:

(0 to 1,700) °C

Accuracy (without probes)

± (0.3% from the measured value + 1.5 °C)

Resolution:

better than 0.1 °C *)

Cold junction:

compensated in the temperature range of (-10

to 60) °C

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Thermocouple of the “B” type (Pt30%Rh-Pt)

Measured quantity:

temperature

Range:

(100 to 1,800) °C

Accuracy (without probes)

± (0.3% from the measured value + 1 °C)

in the range of (300 to 1,800) °C

Resolution:

better than 0.1 °C *)

Cold junction:

uncompensated

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Thermocouple of the “T” type (Cu-CuNi)

Measured quantity:

temperature

Range:

(-200 to 400) °C

62

Accuracy (without probes)

± (0.3% from the measured value of + 1.5 °C)

Resolution:

better than 0.1 °C *)

Cold junction:

compensated in the temperature range of (-10

to 60) °C

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 Thermocouple of the “N” type (NiCrSi-NiSiMg)

Measured quantity:

temperature

Range:

(-200 to 1,300) °C

Accuracy (without probes)

± (0.3% from the measured value of + 1.5 °C)

Resolution:

better than 0.1 °C *)

Cold junction:

compensated in the temperature range of (-10

to 60) °C

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set.

 DC voltage from -60 mV to +140 mV

Range:

(-60 to +140) mV

Accuracy:

± 100 uV

Resolution:

better than 1 uV *)

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

Input impedance

approximately 107 Ω

Minimum allowable input voltage:

-0.2 V

Maximum allowable input voltage:

+3 V

63

Connector:

miniature uncompensated thermocouple
connector (white color)

 DC voltage from -18 mV to +18 mV

Range:

(-18 to +18) mV

Accuracy:

± 20 uV

Resolution:

better than 0.5 uV *)

Input impedance

approximately 107 Ω

Minimum allowable input voltage:

-0.2 V

Maximum allowable input voltage:

+3 V

Connector:

miniature uncompensated thermocouple
connector (white color)

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

64

Universal input with a terminal ______________________

The input is equipped with two-part removable terminal block
with four wires. The inputs are not galvanically isolated from
each other, nor from other signals connected to the Multilogger.
In order to secure correct measurements, you need to prevent
undesirable coupling.

Models equipped with this input:

EML-08

Input 1

Input 2

Input 3

Input 4

EML-04

Input 3

Input 4

EML-05

Input 3

Input 4

EML-06

Input 3

Input 4

EML-07

Input 3

Input 4

The following signals can be connected to this input:

 DC voltage in the range of 0 to 10 V

Range:

(0 to 10) V DC

Accuracy:

± 10 mV

Resolution:

better than 100 uV *)

Input impedance

approximately 130 kΩ

Minimum allowable input voltage:

-0.2 V (10 V - COM)

Maximum allowable input voltage:

+30 V (10 V - COM)

Recommended cable length:

maximum of 15 meters

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

 DC current in the range of 0 to 20 mA

65

Range:

(0 to 20) mA DC

Accuracy:

± 20 uA

Resolution:

better than 0.1 uV *)

Input impedance

approximately 100 Ω

Minimum allowable input current:

0 mA (disconnected circuit)

Maximum allowable input current:

limited to approximately 40 mA

Maximum cable length:

maximum of 30 meters

______________________________________________________________________________________

*) to achieve this value, the corresponding number of

decimal places must be set

The Multilogger does not contains the power
supply suitable for passive transmiters with a
current loop. This situation has to be resolved by
additional power supply source.

 Binary signal - monitoring changes of the binary

signal. You can connect a contact, voltage signal or
open connector transistor. The binary input can be
used on inputs No. 3 and 4 only.

Input voltage for level “switched on”:

< 0.4 V

_________________________________________________________________________________

The binary input will not work correctly if the source has

a high impedance at its “switched on” state. The problem

can be solved by connecting an external resistor of an
impedance of approximately (1 to 10) kΩ connected in
parallel to the input.

Input voltage for level “switched off”:

> 2 V

Minimum input voltage:

0 V

Maximum input voltage:

+30 V DC

Impedance of the “switched on” contact:

< 10 kΩ

Impedance of the “switched off” contact:

> 300 kΩ

Voltage on the disconnected contact:

66

approximately 3 V

_________________________________________________________________________________

In order to work properly, the device equipped with a

“transistor with an open connector” can require a higher

voltage than Multilogger is able to supply. Moreover, you

should also make sure that the voltage in the “switched
on” state is not higher than 0.4 V declared above.

Current through the “switched on” contact.

approximately 40 uA in the impulse

Minimum length of input pulse:

1 s in the standard measuring mode
10 s in the power saving measuring mode

Maximum cable length:

< 30 meters (use shielded cable if longer than
5 m) Use shielded cables in environments
with electromagnetic disturbance also.

 Binary counter - you can connect a contact, voltage

signal or transistor with an open connector. The
counter can be used only on input No.4.

Range of counter:

24 bit (16 777 215), the counter overflow can
be allowed.

Maximum input frequency:

200 Hz

Input levels:

the same as the parameters of the binary
input.

Other options:

relative counter (number of impulses per

measuring interval)

67

Internal barometric sensor_________________________

Models equipped with this sensor:

EML­05

barometric pressure

EML­07

barometric pressure

Parameters:

Measured quantity:

barometric pressure (absolute)

Range:

600 hPa to 1,100 hPa

Accuracy:

±1.3 hPa at 23 °C

Other options:

recalculation to the sea level

Supported physical quantities:

hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in

2

Internal CO2 concentration sensor in the air ____________

Models equipped with this sensor:

EML-06

CO2 concentration in the air

EML-07

CO2 concentration in the air

Parameters:

Measured quantity:

CO2 concentration in the air

Range:

0 to 2,000 ppm

Accuracy:

50 ppm + 2% of the measured value

at 23 °C and 1,013 hPa

68

Appendixes

Appendix 1: Selected error messages

Error

Description and solution

Error 1

The value is out of the input range (low limitation).

- shorted Pt1000 probe

- negative input voltage (thermocouples, 0 to 10 V)

- reverse input current (for 0 mA to 20 mA range)

Check the connected probes and signals!

Error 2

The value is out of the input range (high limitation).

- disconnected Pt1000 probe

- too high input voltage (thermocouples, 0 to 10 V)

- too high input current (for 0 mA to 20 mA range)

Check the connected probes and signals!

Error 4

Digi_/M probe communication error.

Check the connected probe - it is probably not connected or it
is not Digi_/M line probe!

Error 5

Digi_/M probe communication error.
The probe is probably damaged. Try another probe!

Error 7

Pt1000 probe communication error.

Check the connected probe - it is probably not connected or it
is not Pt1000 line probe!

Error 8

Cold junction temperature measurement error.

The Multilogger is outside of the range of operational
temperatures or the device is damaged.

Error 9

The value is out of the measuring range (for example,
temperature from RTD and from the thermocouple probes).

The probe could be defective, the thermocouple type could
be different and there may be an undesirable coupling among
inputs or incorrect calibration of the Multilogger. Try a
different probe, check the cables and unwanted coupling.

Error 10

The pressure sensor is not available.

Send the Multilogger for repair.

Error 11

The counter does not have valid data, the Multilogger has
been without batteries.

Erase the counter using the SW and repeat measurement.

69

Error

Description and solution

Error 12
:
Error 16

The CO2 concentration sensor is not available or does not
work correctly.

Send the Multilogger for repair.

Error 19

The source value for the calculated channel is not available.

Check calculated channel settings and its source values.

Error 20

Calculation error, incorrectly calibrated device.

Send the Multilogger for repair.

Error 21

Counter overflow.

Erase the counter using the SW and repeat measurement.
If you do not want to be considered the counter overflow as
error you can change this setting of the input.

Error 22

Internal voltage error. Undesirable coupling among the
inputs, incorrect connection, damaged cables, damaged
device.

Check the input connections and the connected cables.

Error 50,
Error 53
:
Error 56

Device configuration error, damaged configuration.

Download the configuration to the SW, check of the settings
of individual items and save them back to the Multilogger.

Error 51

The probe of the Digi/M line contains invalid calibration
constants.

Send the probe for repair or contact the manufacturer.

Error 52

The probe of the Pt1000 line contains invalid calibration
constants.

Send the probe for repair.

Error 90
Error 91

The Ethernet interface - the measured value is out of
numerical range.

Verify the measured value on the device display, contact
the manufacturer.

Error 128
:
Error 255

Communication error.

Repeat the communication, contact the manufacturer.

70

Appendix 2: Output and power supply circuits

71

Appendix 3: Input circuits

72

Appendix 4: Connecting of Pt1000 RTD probe

It is recommended to use the intelligent probes Pt1000 with the Multilogger.
May be that the connection of the standardize RTD Pt1000 probe will be
necessary. In this case you can connect this probe in accordance with
drawing shown below. The input of the Multilogger have to be set to
“Pt1000” using the SW (instead of Pt1000). For the correction of cable
impedance the User calibration can be used.

Connecting a Pt1000 temperature
probe to the MiniDin connector: