CO Sensor - Gas detector Vemer - Free user manual and instructions

Product Type	Gas Detector (Carbon Monoxide)
Brand	Vemer
Model	CO Sensor (VE207700)
Power Supply	From control unit SRG or SRG.4
Current Consumption	40 mA at 6.5 V
Connection	Terminals: C (common), S (signal), A (power supply), 2.5 mm²
Calibration Gas	Carbon monoxide
Calibration Level	200 ppm CO
Max Cable Length	50 m
Housing Material	Self-extinguishing plastic
Protection Rating	IP30
Operating Temperature	0 °C to +50 °C
Humidity	≤90% RH (non-condensing)
Mounting	Wall-mounted, vertical position
Positioning Height	Approximately 1.5 m from floor
Lifespan	5 years from installation
Compliance	2006/95/EC (LVD), 89/336/EEC (EMC)
Annual Check	Recommended at least once a year
Replacement Interval	After 5 years

Frequently Asked Questions - CO Sensor Vemer

What does the Vemer CO Sensor detect?

The Vemer CO Sensor detects carbon monoxide (CO) gas in indoor environments. It is calibrated to alarm at 200 ppm.

How do I install the CO Sensor?

Install the sensor wall-mounted vertically using screws and plastic plugs. Open the container by unscrewing the bottom screw. Avoid touching the sensor or calibration devices.

Where should I place the CO Sensor?

Place the sensor approximately 1.5 meters above the floor (breathing zone) in areas with natural air circulation, away from dust, water jets, and gas appliances to prevent false alarms.

How do I connect the CO Sensor to the control unit?

Use normal electrical cables (shielded if electromagnetic interference is high). Connect to terminals: C (common), S (signal), A (power supply) on the control unit SRG or SRG.4. Max cable length: 50 m.

What is the power supply requirement for the CO Sensor?

The sensor is powered from the control unit (SRG or SRG.4) and draws 40 mA at 6.5 V. Do not install switches or devices that could accidentally cut power.

How often should I check the CO Sensor?

Check operation at least once a year. Also test after extended disuse or if the sensor is replaced. Regular maintenance ensures proper detection.

When should I replace the CO Sensor?

The average lifespan is 5 years from installation. Replace the sensor after that period to ensure reliable performance.

What safety warnings should I follow during installation?

Install by a competent person. Ensure power is off before opening the cover. Do not power on if any part is damaged. Follow positioning guidelines.

Is the CO Sensor compatible with all Vemer control units?

Yes, it is designed specifically for connection to SRG and SRG.4 control units to create gas detection systems.

What standards does the CO Sensor comply with?

It complies with 2006/95/EC (Low Voltage Directive) and 89/336/EEC (EMC Directive) as amended.

USER MANUAL CO Sensor Vemer

Connection diagrams

■ CH4 Sensor. CO Sensor and LPG Sensor are probes for the detection of methane gas, carbon monoxide and LPG to be connected to SRG and SRC.4 control units to create systems for detecting gas in areas such as boiler rooms, warehouses, etc.

It is wall-mounted in a vertical position using screws and plastic plugs.

SAFETY WARNINGS

During installation and operation of the instrument, comply with the following instructions:

1) The device must be installed by a competent person
2) Before removing the cover, make sure that power is NOT provided to the device
3) Before accessing the terminals, make sure that the electrical leads are not live
4) Install the detector in the correct position (see "Installation")
5) Do not power on the device if any part of it is damaged

Code Model Description

VE205100 CH4 SENSOR Methane detection sensor

VE206900 LPG SENSOR LPG sensor

VE207700 CO SENSOR Carbon monoxide sensor

TECHNICAL CHARACTERISTICS

• Power supply: from the control unit SRG or SRG.4
- Current input (at 6.5V): 40mA
- Connection: terminals of 2.5mm ^2 C (common), S (signal), A (power supply)
• Models and calibration:
- Methane gas: CH4 Sensor, (default) 10% LIE of methane
- LPG: LPG Sensor, (default) 12% LIE of isobutene
- Carbon monoxide: CO Sensor, (default) 200ppm of carbon monoxide
• Max. length of connection: 50 m
- Container: in self-extinguishing plastic material
• Fastened to wall using screws and plastic plugs
• Protection: IP30
• Operating temperature: 0 ÷ +50^
• Humidity: ≤90% R.H. without condensation

INSTALLATION

LPG, CO and CH4 Sensors are designed to be wall-mounted (vertically), using screws and plastic plugs. To proceed with installation, open the container by unscrewing the screw located on the lower side. Make sure not to damage the sensor and not to touch the calibration devices.

POSITIONING

The correct installation of the probe is essential to proper operation of the system. Therefore, it must be installed:

• In areas with circulation of natural air;
- In areas that are not subject to dust or dirt that may render the sensor inoperative;
• Near jets of water, intake grilles, openings, etc.
- At an adequate distance from users of gas so as to prevent the system from intervening improperly due to functional leakage.
Also, positioning depends on the type of gas to be detected, specifically:
- CH4 Sensor: Methane gas – at top, about 20-30 cm from the ceiling
• LPG Sensor: LPG - at bottom, about 20-30 cm from the floor
• CO Sensor: carbon monoxide – about 1.5 m from the floor

For new systems, the probe must be installed as late as possible, so that typical construction site activities do not damage the detector.

CONNECTIONS

Normal electrical cables can be used for connections. In any case, when installation is in places that are strongly exposed to electromagnetic disturbances, it is advisable to use shielded cables. The detection system must always be in operation. Therefore, the electrical power supply of the detector must not include switches or other devices that may accidentally shut it off. The average lifespan of the probes is 5 years from the date of installation. Therefore, at the end of that time they will need to be replaced.

Note. Make sure you check operation at least once a year, and in any case whenever there is an extended period of disuse or in the event of replacement. Any tampering may compromise correct operation of the system.

REFERENCE STANDARDS

Compliance with Community Directives:

2006/95/EC (low voltage)

89/336/EEC mod. from 92/31/EEC and from 93/68/EEC (E.M.C.)

is declared with reference to the following standards: