G-Tek LM Pro 63 Series User manual

CONTENTS
Contents................................................................................................................................ 0
List of Tables................................................................................................................... 2
List of Figures ................................................................................................................. 3
Safety and the environment............................................................................................ 4
3.1 Use .....................................................................................................................................4
3.2 Ensure Safety ......................................................................................................................4
3.3 Protecting the environment.................................................................................................4
Specifications ................................................................................................................. 5
4.1 Use .....................................................................................................................................5
4.2 Features..............................................................................................................................5
4.3 Technical Data.....................................................................................................................6
Unpacking and inspection of data logger ........................................................................ 8
5.1 Overall mechanical dimensions for Round plate data logger.................................................9
5.2 Overall mechanical dimensions for Square plate data logger ..............................................10
Electrical installation .................................................................................................... 11
6.1 Wiring diagram for Data logger..........................................................................................11
6.2 RS485 connection Diagram................................................................................................12
Operation..................................................................................................................... 13
7.1 Front panel of Data logger.................................................................................................13
7.2Zero offset ........................................................................................................................14
7.3 Status of LED Indication.....................................................................................................15
7.4 Seven segment LED display................................................................................................16
Configuration ............................................................................................................... 17
6.1 Configurable item..............................................................................................................17
6.2 Main menu sequence ........................................................................................................18
6.3 CPAR (Configurable Parameters)........................................................................................19
6.3.1 AOND (Alarm on delay)..........................................................................................................................20
6.3.2 AOFT (Alarm off delay)...........................................................................................................................20
6.3.3 ALSH (Alarm set point high)...................................................................................................................21
6.3.4 ALSL (Alarm set point low).....................................................................................................................21

Page. 1 LM P RS485 Data Logger
6.3.5 UNIT .......................................................................................................................................................22
6.3.6 OFST (offset) ..........................................................................................................................................23
6.3.7 MUL (Multiplier) ....................................................................................................................................23
6.4 RTC (Real time clock).........................................................................................................24
6.5 UPDR (Update Display Refresh Rate)..................................................................................25
6.6 PSEN (Password Enable) ....................................................................................................25
6.7 CHPS (Change Password)...................................................................................................26
6.8 **BSTS (Batch start/stop)..................................................................................................26
6.9 **SINT (Store interval) ......................................................................................................27
Communication ............................................................................................................ 28
7.1 COMM (Communication Type)...........................................................................................29
7.2 BAUD (Baud rate)..............................................................................................................29
7.3 DADR (Device address)......................................................................................................30
7.4 PRTY (Parity).....................................................................................................................30
7.5 AVGE (Average Enable)......................................................................................................31
Modbus RTU Communication........................................................................................ 32
8.1 Modbus RTU Protocol .......................................................................................................32
8.2 Modbus RTU Message Framing..........................................................................................32
8.3 Modbus ASCII Message Framing ........................................................................................33
8.4 Modbus function codes .....................................................................................................33
8.5 Read Current Pressure Data in RTU mode ..........................................................................34
8.6 Read Device Information in RTU mode...............................................................................35
Troubleshooting guide .................................................................................................. 37
Order code ................................................................................................................ 38

Page. 2 LM P RS485 Data Logger
LIST OF TABLES
Table 1 Specifications....................................................................................................................................6
Table 2 Pressure Units with their range........................................................................................................7
Table 3 Connection notations.....................................................................................................................11
Table 4 RS485 Connection notations..........................................................................................................11
Table 5 Status of LED's................................................................................................................................15
Table 6 Configurable item...........................................................................................................................17
Table 7 MEI Current pressure data query...................................................................................................34
Table 8 MEI Query response.......................................................................................................................36
Table 9 Troubleshooting guide ...................................................................................................................37
Table 10 Order code ...................................................................................................................................38

Page. 3 LM P RS485 Data Logger
LIST OF FIGURES
Figure 1 Front and back view of Round plate LM P RS485 data logger (Model No:63xx)............................8
Figure 2 Front and back view of Square plate LM P RS485 data logger ((Model No:64xx) ..........................9
Figure 3 Overall mechanical dimensions for Round plate data logger (Model No:63xx).............................9
Figure 4 Overall mechanical dimensions for Square plate data logger (Model No:64xx) ..........................10
Figure 5 Wiring Diagram of Data logger .....................................................................................................11
Figure 6 4-Wire RS485 Wiring diagram......................................................................................................12
Figure 7 2-Wire RS485 wiring diagram ......................................................................................................12
Figure 8 Front panel of data logger ............................................................................................................13
Figure 9 Seven segment LED display...........................................................................................................16
Figure 10 Main menu sequence..................................................................................................................18
Figure 11 Configurable parameters ............................................................................................................19
Figure 12 AOND (Alarm on delay)...............................................................................................................20
Figure 13 AOFT (Alarm off delay)................................................................................................................20
Figure 14 ALSH (Alarm set point high)........................................................................................................21
Figure 15 ALSL (Alarm set point low)..........................................................................................................21
Figure 16 Unit Sequence.............................................................................................................................22
Figure 17 OFST (Offset)...............................................................................................................................23
Figure 18 MUL (Multiplier)..........................................................................................................................23
Figure 19 RTC (Real time clock)...................................................................................................................24
Figure 20 UPDR (Update Display Refresh Rate)..........................................................................................25
Figure 21 PSEN (Password Enable) .............................................................................................................25
Figure 22 CHPS (Change Password)............................................................................................................26
Figure 23 BSTS (Batch start)........................................................................................................................26
Figure 24 BSTS (Batch stop) ........................................................................................................................27
Figure 25 SINT (Store interval)....................................................................................................................27
Figure 26 Communication (Password authentication) ...............................................................................28
Figure 27 COMM (Communication Type) ...................................................................................................29
Figure 28 BAUD (Baud rate)........................................................................................................................29
Figure 29 DADR (Device address)................................................................................................................30
Figure 30 PRTY (Parity)................................................................................................................................30
Figure 31 AVGE (Average Enable) ...............................................................................................................31

Page. 4 LM P RS485 Data Logger
SAFETY AND THE ENVIRONMENT
3.1 USE
➢This instruction manual is an essential component of the product.
➢Please read this documentation 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.
3.2 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.
3.3 PROTECTING THE ENVIRONMENT
➢Dispose of faulty rechargeable batteries/spent batteries in accordance to 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.

Page. 5 LM P RS485 Data Logger
SPECIFICATIONS
4.1 USE
➢The LM-P-PRO series of differential pressure data logger / indicator is very helpful
in monitoring differential pressure especially for clean rooms. Large 0.56” LED
digital display eliminates the human error in reading the data. The device is field
programmable for most common of the eight measuring units. The decimal point
gets selected automatically for displaying with best resolution.
➢It also has a feature to set the high and low alarm limit. Whenever the limit is
crossed, appropriate LED indicates the alarm condition. Display also starts
blinking, for better attention.
➢Programming of various parameters like, unit, alarm limits, calibration parameters
(zero and span), communication parameters etc. are all settable through 4 keys.
Data is scanned every second. It has RS485 2/4 wire communication port to
connect to any SCADA using MODBUS RTU/ASCII protocol. User can get the
current data and device identification information over protocol.
➢Device also has an optional memory to store the data. It is possible to store the
data at an interval between 1 second to 18 hours interval. The stored data can only
be retrieved through our web- based data acquisition software gtekNetTM. It is
also possible to configure the entire device from this software. gtekNetTM enables
the user to see, modify, generate report with 21CFRPart 11 compliance using any
standard browser from anywhere over network connected device.
4.2 FEATURES
➢Differential Pressure
➢8 engineering units of measure →Pascal, KPA, mBar, PSI, mmWC, inWC,
mmHg, InHg
➢Digital Display
➢Alarm set point high / low
➢Alarm Indicator
➢Wide power supply 5-30V DC
➢RS 485 MODBUS compatible
➢SS 314 Front facia

Page. 6 LM P RS485 Data Logger
4.3 TECHNICAL DATA
Table 1 Specifications
Specifications For LM-P RS485 data logger
Model No
LM-P RS485 data logger
Display Details
Display
Digital, 4 digits ultra-bright LED Numeric/semi
alphabetic display
Status Indicator
Unit Indication, High and Low Alarm Indication, and
storage on Indication
Display Refresh rate*
1 reading / second
Analog Input Details
Input Media
Air and non-combustible and non-corrosive gases.
For Wetted Materials, consult factory.
Pressure Sensor
MEMS sensor either Differential or Absolute pressure
Measurement parameters
[ 8 units]
Pascal (PA), Kilo pascal (KPA), milli bar (mbar), psi
(PSI), mm of Water Column (mmWC), inch of Water
Column (INWC), mm of Hg (mmHG), inch of Hg (INHG)
Measuring range Pressure
-500 to +500 pascal(refer Table2 for other units’ range)
Pressure Accuracy
± 1.5 %FSD
Pressure Input port
Quick Connect/Disconnect port 3 mm tube ID
Environmental conditions
Temperature
(Operating) -5 to +65 oC
(Storage) -40 to +125 oC
Relative Humidity
(Operating) 10 to 80 % RH Noncondensing
(Storage) 5 to 90 % RH Noncondensing
Altitude
<2000 meter
**Batch Storage Data/Memory Details
Start / Stop Batch
Remote Start –Stop through gtekNetTM
Store Interval
0 To 240 min in Step of 1 Sec
Memory Size
4000 records totals; Rollover
Power Requirements
Supply Voltage
5 –30 V DC,1 A
Communication Details
Communication
EIA 4 wire RS 485
Protocol
Modbus RTU/ASCII Protocol
Baud rate
User settable –4.8k, 9.6k, 19.2k & 38.4k bps
Parity
User settable –None, Even & Odd
Device Address
1 to 247 –User settable
Alarm Details
Alarm Set-point
High/Low individually settable for channel
Buzzer
Audible alarm on high/low condition
Alarm high/low status
Alarm High/low individual status LEDs

Page. 7 LM P RS485 Data Logger
Table 2 Pressure Units with their range
NOTE: Please refer the order code for detailed features.
# Pressure range will be as per the selected order code. Table 2 show the pressure range for ± 5
mbar sensor.
* Display refresh rate is settable by user from menu.
The starred (**) parameter varies with order code selection. As per selection, if the device is with
no memory, then some features like batch operation and store interval are not provided.
Mechanical Dimensions and Mounting
Housing Material
ABS Plastic
Mounting Orientation
Mounting unit in vertical plane
Size (L x W x D) mm
190 x 190 x 40
Panel Cutout (Diameter) mm
115
Housing (Diameter) mm
112
Weight
500 gms Approx.
Unit
No.
Pressure Unit
Unit list on Display
Pressure Range#
1
Pascal
PA
-500 to +500
2
Kilo Pascal
KPA
-0.500 to +0.500
3
Milli Bar
mbar
-5.00 to +5.00
4
Pound Square per inch
PSI
-0.072 to +0.072
5
mm of Water Column
Mh2o
-50.9 to +50.9
6
Inch of Water Column
Ih2o
-2.01 to +2.01
7
mm of mercury
mmhg
-3.75 to +3.75
8
Inch of mercury
Inhg
-0.147 to +0.147

Page. 8 LM P RS485 Data Logger
UNPACKING AND INSPECTION OF DATA LOGGER
➢6X Pressure 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 there is evidence of damage, the device should not be operated, and the local
representative contacted for instructions. Ensure that all accessories and
documentation is removed from the box.
➢There are two variants of LM P RS 485 data logger(refer order code) –Square and
Round plate as shown in figure 1 and figure 2.
➢If the 6X Pressure data logger is for immediate use, you can start installing it as
per Installation instructions.
➢Please preserve the original packing along with all internal packing for future
transport requirements.
Figure 1 Front and back view of Round plate LM P RS485 data logger (Model No:63xx)