Comet System T2114 User manual

Programmable atmospheric pressure transmitter
T2114
with 4-20 mA output
Instruction Manual
©Copyright: COMET SYSTEM, Ltd.
It is prohibited to copy and make any changes in this manual, without explicit agreement
of company COMET SYSTEM, Ltd. All rights reserved.
COMET SYSTEM, Ltd. makes constant development and improvement of their products.
Manufacturer reserves the right to make technical changes to the device without previous notice.
Misprints reserved.
Manufacturer is not responsible for damages caused by using the device in conflict with this
manual.
To damages caused by using the device in conflict with this manual cannot be provide free repairs
during the warranty period.
Read carefully instruction manual before the first device connection.
Contact address of this device’s producer:
COMET SYSTEM, s.r.o.
Bezrucova 2901
756 61 Roznov pod Radhostem
Czech Republic
www.cometsystem.com

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Instruction manual for use of T2114 device
Device is designed for measurement of atmospheric pressure at hPa, PSI, inHg, mBar, oz/in2,
mmHg, inH2O and kPa. It is possible to set pressure correction for altitude (offset). Device setting
is provided by user’s software, see latter. Pressure sensor is placed inside the electronic case.
Measured value is optionally shown on LCD display. Display can be switched OFF too. Device
is connected to circuitry by means of current loop. Current loop has two-wire connection and
requires power from evaluation device.
All transducer setting is performed by means of the PC connected via the optional SP003
communication cable (not included in delivery). Program TSensor for transducer setting
is available to download free at www.cometsystem.com. Program enables to set pressure measuring
range of current output. It supports make the adjustment of the device too. This procedure
is described at file „Calibration manual.pdf“ which is installed commonly with the software.
Transmitter version TxxxxLwith watertight male connector instead of a cable gland
is designed for easy connection/disconnection of the output cable. The protection of male Lumberg
connector RSFM4 is IP67.
Models marked TxxxxZare non-standard versions of the transmitters. Description is not
included in this manual.
Please read instruction manual before the first device connection.
Device setting from the manufacturer
If special setting was not required in the order device is set from the manufacturer to
the following parameters:
value at output I1: 4 –20 mA corresponds to atmospheric pressure from 800 to 1100 hPa
1
correction for altitude: 0 hPa (absolute pressure)
display: switched ON
pressure unit: hPa
Modification of the setting is possible to do by means of the PC using procedure described
at the end of this document.
Device installation
Device is designed for wall mounting. There are two mounting holes at the sides of the case.
It is NOT recommended to use the device for long time under condensation conditions. It could be
the cause of water steam condensation inside the sensor’s cover into water phase. This liquid phase
stays inside sensor’s cover and can’t escape from the cover easily. If water condensation occurs
for longer time it can cause device damage. Don’t connect device while power supply voltage is on.
Interconnection terminals of T2114 are accessible after unscrewing four screws and removing the
lid. Lace the cable through a gland at the case wall. Connect the cable to terminals with respecting
the signal polarity (see figure). Terminals are self-clamping and can be opened by a suitable
screwdriver. For the opening, insert the screwdriver to upper terminal hole and lever by him. Do not
remember to tighten glands and case lid with inserted packing after cables connecting. Connect
complementary female connector for T2114L transmitter in accordance with the table
in Appendix A of this manual. Working position is with communication cable entering from the top
side.
1
It is possible to set own output scale with user’s software

IE-SNC-T2114-03 3
It is recommended to use shielded twisted copper cable, maximal length 1200m. The cable
must be located at indoor rooms. The cable should not be led in parallel along power cabling. Safety
distance is up to 0.5 m, otherwise undesirable induction of interference signals can appear. Outside
diameter of the cable for T2114 device must be from 3.5 to 8 mm (e.g. SYKFY), for device T2114L
with respect to the female connector. Do NOT connect shielding at connector side.
Electrical system (wiring) may do only worker with required qualification by rules in operation.
Setting of pressure correction for altitude
If there is necessary to read value of atmospheric pressure corrected with respect to altitude,
it is possible to set corresponding pressure offset for this altitude. It is possible to do it with Users
software. This value is then automatically added to measured pressure value. The resultant value of
pressure with added correction for altitude must be between 300 hPa and 1350 hPa (from 4.351 PSI
to 19.580 PSI). Outside this range device sends value of Error 2!
Dimensions –T2114
Connection:
Dimensions –T2114L
Connection: see Appendix A

4 IE-SNC-T2114-03
Typical application wiring
Calculation of minimum power voltage Uss for proper
operation:
Uss min > Uo +Imax*Rz,
where: Uo = 9 V
Imax... about 20 mA
Rz...sensing resistor (shunt))
LCD Info mode
It is possible to check stored output scale without using of computer. It is necessary to have
connected current loop I1 (device is powered throw loop).
Unscrew the transducer lid and shortly press button between display and interconnection
terminals by means of a tool (e.g. screwdriver).
It shows preset value of pressure for current output I1. Lower LCD line
shows current value (at mA) which is associated to the lowest pressure
output (value displayed at upper LCD line). Here 4 mA corresponds to
800 hPa.
Press button again to get value for upper point similarly as at previous point.
Here 20 mA corresponds to 1100 hPa.
Notice: during info mode no measurement and no output current generation
proceed. The device stays at info mode 15 s and then automatically goes back to measuring cycle.
Readings on LCD display
hPa, PSI, inHg,
Reading next to this symbol is measured pressure or error state of value. If selected pressure unit is
mBar or oz/in2or mmHg or inH2Oor kPa, there is shown only value (number) without
corresponding pressure unit!
symbol 3 near by left display margin
Is on if jumper is closed.
Technical parameters:
Power: 9 to 30 V dc, maximum ripple 0.5 %
Measuring parameters:
Atmospheric pressure:

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- accuracy of value shown on LCD display:
Unit
hPa, mBar
PSI
mmHg
inHg
inH2O
oz/in2
kPa
Range
600
8.70
450.0
17.72
240.9
139.2
60.00
1100
15.95
825.1
32.48
441.6
255.3
110.00
accuracy
T=23 °C
±1.3
±0.02
±1.0
±0.04
±0.5
±0.3
±0.13
0≤T≤40°C
±1.5
±0.02
±1.1
±0.04
±0.6
±0.3
±0.15
Else
±2.0
±0.03
±1.5
±0.06
±0.8
±0.5
±0.20
Response time
2
: t90 <44 s
Analog output:
Range: 4 to 20 mA
Current output in case of error: <3.8 mA or >24 mA
Output accuracy: ±(accuracy of value shown on LCD display + 0.06 % FS) hPa
Recommended calibration interval: 1 year
Measuring interval and LCD display refresh: 2 s
Communication with computer:via USB port by means of USB communication
cable SP003 (option)
Protection: IP54
Operating conditions:
Operating temperature range: -30 to +80 °C, over +70 °C switch LCD display OFF
Operating humidity range: 0 to 100 %RH
Outer characteristics in accordance with Czech National Standard 33-2000-3:
normal environment with the specifications: AE1, AN1, BE1
Working position: communication cable is entering from the top side
Electromagnetic compatibility: complies EN 61326-1
Not allowed manipulations: It is not allowed to operate the device under other than
specified conditions in technical parameters. Devices are not designed for locations
with chemically aggressive environment. Do not use the device in an explosive
environment.
Storing conditions: temperature -30 to +80 °C,
humidity 0 to 100 %RH without condensation
Dimensions: see dimensional drawings
Weight: approximately 135 g
Material of the case: ASA
Procedure of modification of device adjustment:
•Device adjustment is performed by means of the optional SP003 communication cable,
connected to USB port of the PC.
•It is necessary to have installed configuration program TSensor on the PC. It is free to
download at www.cometsystem.com. During installation please take care about
installation of driver for USB communication cable.
•Connect SP003 communication cable to the PC. Installed USB driver detect connected
cable and create virtual COM port inside the PC.
2
There is possible to change response time. For more details see file “Description of calibration and
adjustment procedure.pdf”, which is installed together with Users software.

6 IE-SNC-T2114-03
•Unscrew four screws of the device lid a remove the lid. If device is already installed to
measuring system, disconnect leads from terminals.
•Connect SP003 communication cable to the device. Display must light up, or at least
must light up all symbols for one second (if LCD was switched OFF by program
before).
•Run installed TSensor program and select corresponding communication COM port
(as described above).
•When new setting is saved and finished, disconnect the cable from the device, connect
leads into its terminals and place the lid back to the device.
Error States of the device
Device continuously checks its state during operation. In case error is found LCD displays
corresponding error code:
Error 0
There is a reading „Err0“ on LCD display.
Check sum error of stored setting inside device’s memory. Output value is <3.8 mA. This error
appears if incorrect writing procedure to device’s memory occurred or if damage of calibration data
appeared. At this state device does not measure and calculate values. It is a serious error, contact
distributor of the device to fix.
Error 2
There is a reading „Err2“ on LCD display.
Atmospheric pressure measurement error occurred. Output value is about 3.8 mA. Measured
pressure value with added correction for altitude is outside of range from 300 hPa to 1350 hPa
(from 4.351 PSI to 19.580 PSI) or the pressure sensor is damaged. Please check setting of pressure
correction for altitude with User’s software.
Error 4
There is a reading „Err4“ on LCD display.
It is internal device error during pressure sensor initialization. Under this condition device does
NOT measure atmospheric pressure Output value is about 3.8 mA. Pressure sensor is probably
damaged. It is a serious error, contact distributor of the device.
End of operation
Device itself (after its life) is necessary to liquidate ecologically!
Technical support and service
Technical support and service is provided by distributor. For contact see warranty certificate

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Appendix A