G-Tek LM-U PRO Series User manual

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Table of Content
Table of Content ...........................................................................................................................................1
List of Figures ................................................................................................................................................2
List of Tables .................................................................................................................................................2
1SAFETY AND THE ENVIRONMENT........................................................................................................................3
1.1 ABOUT THIS DOCUMENT ...........................................................................................................................3
1.2 ENSURE SAFETY.......................................................................................................................................3
1.3 PROTECTING THE ENVIRONMENT ................................................................................................................3
2SPECIFICATIONS..............................................................................................................................................4
2.1 UNPACKING THE LM-U PRO DATA LOGGER .................................................................................................4
2.2 USE .......................................................................................................................................................5
2.3 TECHNICAL DATA.....................................................................................................................................6
3PRODUCT DESCRIPTION....................................................................................................................................9
3.1 STATUS LEDS..........................................................................................................................................9
3.2 DISPLAY (LCD)........................................................................................................................................9
3.3 KEY FUNCTIONS .....................................................................................................................................10
3.4 SENSOR CONNECTIONS...........................................................................................................................11
3.5 IMPORTANT INFORMATION AND GLOSSARY OF TERMS..................................................................................12
4USING THE PRODUCT.....................................................................................................................................14
4.1 CONFIGURING THE DATA LOGGER .............................................................................................................14
4.2 MEASUREMENT PROCEDURE ...................................................................................................................14
4.3. READING OUT DATA..............................................................................................................................15
5MAINTAINING THE PRODUCT..........................................................................................................................17
5.1. CHANGING THE BATTERIES......................................................................................................................17
5.2 BATTERY DISPOSAL ................................................................................................................................18
5.3 CLEANING THE INSTRUMENT....................................................................................................................18
6TIPS AND ASSISTANCE ....................................................................................................................................19
7ORDER CODE ...............................................................................................................................................20

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List of Figures
Figure 1 Front View of LM-U Pro data logger ...............................................................................................4
Figure 2 Mechanical Dimensions of the LM-U Pro data logger ....................................................................5
Figure 3 LCD Display Format.........................................................................................................................9
Figure 4 Sensor Connector Diagram ...........................................................................................................11
Figure 5 Batch Configuration of the Data logger........................................................................................12
Figure 6 Current Temperature Reading of the LM-U Pro Data logger........................................................15
Figure 7 Downloaded data Summary .........................................................................................................16
List of Tables
Table 1 Specification.....................................................................................................................................6
Table 2 Sensor Types with their respective ranges ......................................................................................7
Table 3 LED Indication...................................................................................................................................9
Table 4 Display strings for various sensor types.........................................................................................10
Table 5 Sensor Connection Table................................................................................................................11
Table 6 FAQ.................................................................................................................................................19
Table 7 Order Code.....................................................................................................................................20

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1SAFETY AND THE ENVIRONMENT
1.1 ABOUT THIS DOCUMENT
➢This instruction manual is an essential component of the product.
➢Please read this documentation through carefully and pay attention to the safety
instructions and warning notices to prevent injuries and damage to the product.
➢Keep this document handy so that you can refer to it when necessary.
1.2 ENSURE SAFETY
➢Operate the product properly, for its intended purpose and within the parameter
specified in the technical data. Using it beyond the specified limit can cause the damage
to the product and personnel also.
➢Do not use the product if there are signs of damage to the housing.
➢Carry out only the maintenance and repair work on this instrument that is described in
the documentation. Follow the prescribed steps exactly. Use only original spare parts
from G-Tek.
1.3 PROTECTING THE ENVIRONMENT
➢Dispose of faulty rechargeable batteries/spent batteries in accordance with the local
regulations or valid legal specifications.
At the end of its useful life, send the product to the separate collection for electric and electronics
devices (observe local regulations) or return the product to G-Tek for disposal. (Dispose or recycle
the LM-U Pro data logger in accordance with the WEEE 2012/19/EU guidelines or your local
regulations. For the suitable recycling, the device may also be returned to the manufacturer.)

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2SPECIFICATIONS
2.1 UNPACKING THE LM-U PRO DATA LOGGER
➢LM-U Pro data logger is dispatched in a recyclable, environment friendly package
specially designed to give adequate protection during transit.
➢If the outer box shows sign of damage, it should be opened immediately, and the device
be examined. If the device is found damaged, it should not be operated, and the local
representative contacted for instructions.
➢Ensure that all accessories and documentation is removed from the box.
➢If the LM-U Pro data logger is for immediate use, you can start installing it as per
Installation instructions.
➢Please preserve the original packaging along with all internal packing for future
transport requirements.
Figure 1 Front View of LM-U Pro data logger

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2.2MECHANICAL DIMENSTIONS OF THE LM-U PRO DATA LOGGER
Figure 2 Mechanical Dimensions of the LM-U Pro data logger
2.2 USE
➢The LM- U Pro data loggers (with an External Sensor) are used to save and read out
individual external sensor reading a measurement series. They have been specifically
designed for monitoring the storage and transportation of product subject to cold chain
requirements.
➢User can fully configure parameters like –Start delay, alarm high/low limit, sensor type,
temperature unit, store interval etc. User can also set the information like, username and
job description.
➢Acceleration readings are monitored throughout the duration of the measurement
program and saved when the set limit value is exceeded.
➢Data logger programming and measurement report output are implemented via CSV, PDF
files, LMView software needs to be installed.
➢Data loggers come with individual NABL traceable calibration certificate.

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2.3TECHNICAL DATA
Table 1 Specification
Model No
LM-U Pro Data logger
Display and Operator Panels
Display Type
3.5 Character LCD Display with Min, Max, Battery Status,
Alarm Hi-Low and Current Temperature
Display Dimension
33 x 30 mm; TN Reflective
Display Resolution
0.1 / 1.0
Display ON/Auto off
Programmable from PC Application
Status Indicator
HB LED for Device working
STR LED for Batch Start / Stop
Panel Keys
Front panel KB consisting of 2 keys
Min / Max
Min Data Display / Max Data Display / Current Data with
respect to Current Measurement
Display Blinking
on Alarm high - low Condition
Reading Types
Actual with Min Max. ON Display and PC
Analog Input Details
No of Inputs
1
Sensor Input Type
Types J, K, R, S, T
RTD
PT-100; DIN43760, α=0.00385
Vdc
0-1V
mA
4-20mA; 0-20mA (Internal Shunt Resistance of 50 Ω 0.1%)
Accuracy
± 0.25% FSD ±1 digit
Linearization
Polynomial Based Software Linearization
Resolution
0.1/1.0
CJC Error
±0.5˚C for 0-50˚C
Sensor Type and Range
Refer to the Table 2
Batch Storage / Data Memory Details
Start / Stop
Immediate
Batch Stop
Intermediate Any time / Memory Full / At Specific Time
Store Interval
5 seconds to 18 hours
Delayed Start
Absolute / Relative up to 45 days
Tagging
Yes. On long press of a Key for 4 seconds with an indication
on display
Batch Stop required to
Download
No
Data Storage
Yes
Memory
32000 Data Records

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Memory Type
Flash, Non-volatile, Data Retention up to 100 years
Download Batch
Intermediate after any time the batch started/After the
Batch is stopped.
Environmental
Temperature
(Operation) 5˚C to 45˚C
(Limiting) 0˚C to 50˚C
(Storage) -20˚C to 60˚C
Humidity
(Operation) 10 to 80 % RH Non-Condensing
(Storage) 5 to 90 % RH Non-Condensing
Power Requirement
Supply Voltage (Battery
Operated)
3 V, 3500 mAh, 2 X AA (1.5V) battery; User Replaceable
Battery Life
Up to 1 year battery operating life with shelf life of 1 year (if
data is stored at 15 minutes interval and display OFF mode).
The battery indicator on the display provides information on
the remaining lifetime.
Battery Reverse Polarity
Protected
General
Restore Calibration
User can revert to original factory calibration any time
Reusability
Yes
Online Feature
Power saver mode when USB connected, Online Batch with
Current Data Display using LMView software
Communication
Connectivity
Micro USB data cable (USB 2.0, USB 3.0 Compatible)
Data Download Time
Approx. 2 min for 32000 data records
Standards
EMI-EMC
EN 61326 Class A
Pollution Degree
II
Installation Category
I
Vibration
2g Peak (10Hz-150Hz)
Shock
IEC 61010-1
IP Rating
IP 30
Overall Dimension
Dimension L x W x D
(mm)
135 (L) x 76 (W) x 27 (D)
Mounting
Wall Mounting Bracket
*Feature depends on the options ordered; Specifications are subjected to change without notice.
Table 2 Sensor Types with their respective ranges

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Sensor
Range
RTD (Pt-100)
-100 to 600 °C
4-20mA
± 1999
0-20mA
± 1999
0-1V
± 1999
J type TC
0 to +400 °C
K type TC
0 to +1200 °C
R type TC
0 to +1700 °C
S type TC
0 to +1700 °C
T type TC
-100 to +400 °C

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3PRODUCT DESCRIPTION
3.1 STATUS LEDS
Table 3 LED Indication
3.2 DISPLAY (LCD)
Figure 3 LCD Display Format
1) Measurement program running.
2) Alarm set limit value(s) exceeded.
3) Highest saved reading
4) Lowest saved reading
5) Current Reading
6) Unit.
7) Battery capacity: sufficient ; part empty ; low ;Empty .
8) Lower limit value exceeded
9) Upper limit value exceeded
Note: For Technical reasons, the display intensity of liquid crystal display becomes lower at
temperatures below 0°C. This has no influence on the measuring accuracy. For technical Reasons,
the battery performance decreases at lower temperatures. We Recommend the use of fully
charged batteries to avoid a reset of the instrument at low temperatures.
Indicator
Description
STR
Data Recording has started. At this time, the HBT LED will be off.
HBT
Data Recording is Off, and device is On. At this time STR LED will be off.

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3.3KEY FUNCTIONS
Commissioning
The data loggers are delivered with batteries in removed condition. Insert the batteries
to start the data logger as directed in quick reference manual. Once battery inserted,
Status of “HBT”LED starts flickering every 0.5 sec and display will come up.
Min/Max & Tag Key
➢Press this key and if the display is in OFF mode, it will start immediately, and display
will start showing “Min”, “Max”, and current data
➢Keep the key pressed for about 4 seconds while display is showing Min and Max
values, the data logger will register (log) the data (TAG) at that instance of time if
batch is running
▪Display will Show “tAg”
➢Continue to press the key for more than 8 seconds, and if batch is running, batch will
stop, and display will show “StP”. This will also stop recording further data.
Display Sensor Type
➢Press this key and if the display is in OFF mode, it will start immediately, and display
will show current Sensor Type in device.
➢After showing sensor type display will be OFF and if display in ON mode then it will
start showing readings.
➢Following table show display string for different sensor type.
Table 4 Display strings for various sensor types
Sensor Type
Display
String
RTD (Pt-100)
rtd
4-20mA
4MA
0-20mA
0MA
0-1V
U1v
J type TC
tcJ
K type TC
tck
R type TC
tcr
S type TC
tcS
T type TC
tct

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3.4 SENSOR CONNECTIONS
➢Sensor input can be connected with device sensor connector by referring the figure 3 and
Table 5.
Male Connector
Female Connector
Sequence on Male connector
Sequence on Female connector
Figure 4 Sensor Connector Diagram
Table 5 Sensor Connection Table
Sensor Input
1
2
3
4
RTD
Red (+)
White (-)
White (Common)
White (Common)
Volt
(+)
(-)
Not connected
Not connected
mV
(+)
(-)
Not connected
Not connected
0-20 / 4-20 mA
(+)
(-)
Not connected
Not connected
Note :
1. Verify 1 to 1 connectivity for sensor properly. Colour code for sensor cable may be different.
2. For sensor type –RTD , Volt and mV keep DIP switch in OFF position.
3. In case of 0-20/4-20 mA sensor, keep DIP switch to ON position to get 50 Ωshunt resistance
in sensor circuit.

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3.5 IMPORTANT INFORMATION AND GLOSSARY OF TERMS
The terms used in batch confguration of the data logger are explained below. For details,
please refere to the software help file.
Figure 5 Batch Configuration of the Data logger
1. ID Name: User should assign an appropriate ID Name of maximum 10 alphanumeric
characters.
2. Batch Name: User should assign an appropriate batch name of maximum 10
alphanumeric characters.
3. Alarm High/ Low limt: The set point values for the individual alarm high/low trigger.
4. Unit of Temperature: The unit for temperature is °C.
5. Sensor Type: User can select the required sensor input (refer the table 4) from the
options.
6. Range Low: It is used for selecting the minimum output value that should be displayed on
the LED display measured by the sensor.
7. Span: It is the total range of values that a user wants to measure. It indicates the total
interval in which all the output values will be displayed.
8. Offset: Offset is the amount of deviation that occurs in the output due to calibration
errors of the sensor. If not required, the default value should be kept (zero).

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9. Multiplier: Multiplier is a function given for the user flexibility. If the user wants to
observe the output in the range other than the actual output range, multiplier value
should be set. The value of multiplier is 1.0 by default.
10. Store Interval: It is the interval between two successive logging of data. It can be set
between 5 seconds(minimum) to 18 hours(maximum).
11. No. of Readings: This shows no. of data that will be recorded for the given batch
configuration. This number is calculated based on Batch start, stop time and store
interval. Maximum no. of readings is 32000.
12. Current Date and Time: It shows current date and time of the data logger. Click on the
“clock” button to sync the current date and time of the device with PC time as per
selected time zone.
13. Start Time: It is the time at which Batch will start in the device. User can preset the batch
start time by selecting the date and time as per required batch start delay. The first data
is stored at the batch start time.
14. Stop Time: It is the time at which the data logging will be stopped in the device. User can
set the stop time, if required otherwise it will be calculated based on the start time and
store interval as per maximum number of readings.
15. Display Options:
a) Display Auto Off (default) - This option is normally selected to save battery life of the
data logger
b) Display Permanent On - This option will reduce the battery life of the data logger

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4USING THE PRODUCT
4.1 CONFIGURING THE DATA LOGGER
➢Connect the data logger to PC via the Micro USB data cable.
➢Click on LM View Software. For Further Process details, refer LMview help Manual.
4.2 MEASUREMENT PROCEDURE
Starting Measurement
Depending on the Configuration of the data logger, the measurement program is started via
LMView Application batch configuration.
➢Start Time: the measurement starts automatically once the configured time has been
reached.
➢The logger switches to REC mode, the STR status LED flashes. LED flash bright as per store
interval.
Tag time Marks
While the measurement program is running (Rec Mode), user can log special event with time
stamp by pressing MIN/MAX & TAG key for more than 4 seconds. Display will show “tAg”. Each
TAG is considered as one record. User can place as many TAGS as he wants.
➢Press Min/Max & Tag key for > 4 seconds.
•Display Shows “tAg”.
Note: Total number of records will reduce according to number of tag events.
Ending Measurement
Depending on configuration of the data logger, the measurement program is ended via one of
the following criteria:
➢Press and hold “Min/Max & Tag”key for more than 8 seconds, “STP”message will be
seen on the display for 3 seconds and recording will be stopped.
➢The measurement stops automatically once the configured time has been reached.
➢The maximum number of stored readings has reached .
➢By connecting the device with the LMView application, using “Stop” option.

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Once the measurement stops, “REC” message disappears from the device display, “RUN”LED
turns Off and “STP”LED starts flashing.
4.3.READING OUT DATA
Displaying a measurement data report
➢Connect the data logger to Windows PC via the Micro USB data cable. The current
temperature reading as per the selected sensor will be seen as shown in the figure 6.
Figure 6 Current Temperature Reading of the LM-U Pro Data logger
➢Open LMView Application to carry out analysis for process readings. Please refer to the
software help file for detailed operation.

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Figure 7 Downloaded data Summary

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5MAINTAINING THE PRODUCT
5.1. CHANGING THE BATTERIES
➢Read out Store data.
➢Open the battery compartment on the back of the data logger.
➢Take the spent batteries out of the battery compartment.
➢Insert new batteries (see technical data for type required) into the instrument so that
the positive & Negative pole is visible. Suggested Battery –Energizer Ultimate Lithium
AA cell.
➢Place the battery compartment cover after battery replacement.

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➢The Data logger “Display ON”. Both LEDs are Flashing for <10 Sec.
➢Reconfigure the data logger, see the section Configuring the data logger.
➢Battery replacement stops a measurement that is currently running. However, stored
measurement data are preserved.
➢When new battery is inserted, the min/max value for the current data will be calculated
from that time onwards and batch recording is resumed.
Note: It is advisable to reconfigure the data logger after changing the battery.
5.2 BATTERY DISPOSAL
➢Dispose or recycle the battery in accordance with your local regulations.
➢Do not expose the Data Logger to extreme temperatures as it may lead to the
destruction of the battery and may cause injuries.
5.3 CLEANING THE INSTRUMENT
➢If the housing of instrument gets dirty, clean it with damp cloth.
➢Ensure that no liquid enters the inside of the housing
➢Do not use any aggressive cleaning agents or solvents!
“Warning, Battery may explode if mistreated. Do not recharge,
disassemble, or dispose of in fire.”
“Warning, Battery may explode if mistreated. Do not recharge,
dissemble or dispose of in fire.”
“Warning, Battery may explode if mistreated. Do not recharge,
dissemble or dispose of in fire.”
“Warning, Battery may explode if mistreated. Do not recharge,
dissemble or dispose of in fire.”

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6TIPS AND ASSISTANCE
Frequently Asked Questions (FAQ)
Table 6 FAQ
Question
Possible Cause/ Solution
LCD Display is blank.
•Please check whether the LCD display is Auto off in
batch Configuration.
•Batteries are low or dry.
Display show “ovr”
•If Sensor input is more than specified range which
is given in Table 1, display can show “ovr” (Over the
range).
•Sensor is not inserted.
•Wrong Sensor type selection during batch
configuration.
•Sensor wire broken.
Display show “udr”
•If Sensor input is less than specified range which is
given in Table 1, display can show “udr” (Under the
range).
•Sensor is not inserted.
•Wrong Sensor type select during batch
configuration.
•Sensor wire broken.
Device does not Connect in
Application.
•Micro USB data Cable not working.
What change is required for
4- 20 / 0-20 mA sensor input?
•For 4-20mA, 0-20mA sensor input, make DIP
switch near sensor connector in “ON” position to
get internal resistance 50 Ω.
•If another sensor type is selected, then DIP switch
must be in “OFF” position.