Comet T5540, T6540, T5541, T6541, T5545 User Manual

Specifications are subject to change without notice. IE-SNC-N-T5(6)5xx-06

CO2 transmitters Web Sensor T554x and T654x

with Ethernet connection

PRODUCT DESCRIPTION

CO2 transmitters Web Sensor T554x and T654x with Ethernet connection are designed for measurement of temperature and relative

humidity of air and for measurement of CO2 concentration in air. Transmitters can be used in a chemically non-aggressive environment.

The CO2 concentration is measured using the dual wavelength NDIR sensor with the multipoint calibration. This principle compensates
aging of the sensing elements and offers maintenance free operation and outstanding long term stability.

Relative humidity transmitters allows to determine other calculated humidity variables like dew point temperature, absolute humidity,
specific humidity, mixing ratio and specific enthalpy.

Measured and calculated values are displayed on a two-line LCD display or can be read and then processed via Ethernet interface. The
device is also equipped with three-color LED for visual indication of the CO2 concentration. The following formats of Ethernet
communication are supported: www pages with user-design possibility, Modbus TCP protocol, SNMPv1 protocol, SOAP protocol and XML.
The transmitter may send also a warning message if the measured value exceeds adjusted limit. The messages can be sent up to 3 e­mail addresses or to Syslog server and can be sent by SNMP Trap too. The alarm states are also displayed on the websites. The device
setup can be made by the TSensor software (see www.cometsystem.com) or using the www interface.

type *

measured values

construction

mounting

T5540

CO2

ambient air

wall

T6540

T + RH + CO2 + CV

ambient air

wall

T5541

CO2

probe on cable

wall

T6541

T + RH + CO2 + CV

probes on cable

wall

T5545

CO2

duct mount

fix by means of the cable gland

* models marked TxxxxZ are custom - specified devices T…temperature, RH…relative humidity, CO2…concentration CO2 in air, CV…computed values

INSTALATION AND OPERATION

The transmitters T5540 (T6540) and T5541 (T6541) fasten on a flat surface with two screws or bolts. The external CO2 probe unpack and
connect to the T5541 (T6541) device. Place the external probes into the measured area. The T5545 transmitter install by inserting the
metal stem into the Pg21 cable gland so that the measured air was fed into the head of device (see Technical specification). To fasten the
stem it is also possible to use the flange PP4 (optional accessory). Pay attention to the location of the device and probes. Incorrect choice
of working position could adversely affect accuracy and long-term stability of measured value. Devices don’t require special maintenance.
We recommend you periodical calibration for validation of measurement accuracy.

DEVICE SETUP

For network device connection it is necessary to know new suitable IP address. The device can obtain this address automatically from a
DHCP server or you can use the static IP address, which you can get from your network administrator. Install the latest version of TSensor
software to your PC and according to the “Device connection procedure” (see next page) you connect the Ethernet cable and power supply
adapter. Then you run TSensor program, set the new IP address, configure the device in accordance with your requirements (alarm
conditions, limits of CO2 LED indication, sending of e-mail) and finally store the settings. The device setup can be made by the web
interface too (see manual for devices at www.cometsystem.com ).

After device switching on starts internal test. During this time (about 20 s) LCD display shows ---- instead value of CO2 concentration.
The IP address of each device is set by the manufacturer to 192.168.1.213.

ERROR STATES

Device continuously checks its state during operation and if an error appears, it is displayed relevant code: Err 1 - measured value (except
of CO2 concentration) or calculated value is over the upper limit, Err 2 - measured or calculated value is below the lower limit or
concentration CO2 measurement error occurred, Err 0, Err 3 and Err 4 - it is a serious error, please contact distributor of the device.

SAFETY INSTRUCTIONS

- Don´t use and don’t store the devices without the cover of the temperature and humidity sensors.

- Temperature and humidity sensors have not to be exposed to direct contact with water and other liquids.

- It is not recommended to use the humidity transmitters for long time under condensation conditions.

- Take care when unscrewing the filter cap as the sensor element could be damaged.

- Use only the power adapter according to technical specifications and approved according to relevant standards.

- Don’t connect or disconnect transmitters while power supply voltage is on.

- Installation, electrical connection and commissioning should be performed by qualified personnel only.

- Devices contain electronic components, it needs to liquidate them according to legal requirements.

- To complement the information in this data sheet read the manuals and other documentations that are

available in the Download section for a particular device at www.cometsystem.cz.