Energizer PORTABLE GAS DETECTION INSTRUMENT Especificaciones descargar pdf (Pagina 7)

Neck Strap

Attach the strap to the top connectors and place

around the neck. Adjust the length of the strap until

the instrument is in a comfortable working position.

Chest Harness

Leave the neck strap in position. Attach the other

strap to the side connectors and link around the

chest. Adjust the strap lengths until the instrument is

in a comfortable working position.

Gas Sampling

To take a sample of a gas in a conﬁned space or

where there are unknown levels of gas present using

G-TECTA™ 4GP, the ﬂow sample method can be used.

Note: A ﬂow cap and a 2 metre length of hose

are included in the box with your G-TECTA™ 4GP

instrument. The aspirator bulb and hose (Article Numbers

ASGTAK2 or ASGTAK3) is an additional accessory.

Pumped Instruments

A ﬂow cap must be ﬁtted over the sensors on the

front of the instrument and a hose ﬁtted onto the

ﬂow cap “gas in” nozzle.

1. To ﬁt the ﬂow cap, slide the top of the ﬂow cap

into the small recess at the top of the instrument

and screw the thumbscrew until it is tightly ﬁtted

into place.

2. Attach the sampling hose onto the “gas in” nozzle.

3. The G-TECTA™ 4GP pump will draw the gas

sample through the “gas in” nozzle and out

through the “gas out” nozzle.

4. To remove the ﬂow cap, unscrew the

thumbscrew and lift it away from the instrument.

Diffusion (Non-Pumped) Instruments

A ﬂow cap must be ﬁtted over the sensors on the

front of the instrument, a hose ﬁtted onto the ﬂow

cap “gas in” nozzle and an aspirator bulb ﬁtted onto

the “gas out” nozzle.

1. To ﬁt the ﬂow cap, slide the top of the ﬂow cap

into the small recess at the top of the instrument

and screw the thumbscrew until it is tightly ﬁtted

into place.

2. Attach the sampling hose onto the “gas in” nozzle.

3. Attach the aspirator bulb onto the “gas out” nozzle.

4. Check the aspirator bulb is attached correctly by

covering the end of the bulb and by squeezing

it gently. If there are no leaks, the aspirator bulb

should remain deﬂated for a few seconds.

5. Squeeze the aspirator bulb once per second to

create a steady ﬂow of air into the instrument. We

recommend the operator squeezes the aspirator

bulb at least 10 times (using the 2 metre hose

supplied). Longer lengths of hose and metal

probes can be purchased. For additional lengths

of hose, we recommend that the aspirator bulb is

squeezed once for every additional 30cm of hose

to enable the gas sample to reach the sensor.

Continue to squeeze the bulb for an additional

45 seconds, or until gas readings stabilise.

6. To remove the ﬂow cap, unscrew the

thumbscrew and lift it away from the instrument

W A R N I N G



Manual aspirator remote sampling only

provides continuous gas readings for the area in which

the hose or probe is located and when the aspirator

bulb is being continuously squeezed. Each time a new

gas reading is required, the aspirator bulb must be

squeezed a sufﬁcient number of times to bring a fresh

sample and a stabilised reading to the sensor.

Maintenance, Calibration

and Gas Testing

Cleaning

Ensure the G-TECTA™ 4GP display, operator button and

sensor ﬁlter remain free from dirt build up. Regularly

wipe over your G-TECTA™ 4GP unit with a damp cloth

and inspect the sensor ﬁlters for dirt or damage.

Gas (bump) testing

The atmosphere in which G-TECTA™ 4GP instruments

are used can have lasting effects on the sensors.

Sensors may suffer losses in sensitivity leading to

degraded performance if exposed to certain substances.

The Linde Group recommends a bump test each time

G-TECTA™ 4GP instruments are used or issued for

use. As a minimum, a monthly bump test is required

to conﬁrm sensor operation. Test gases of known

composition (compatible with the settings on the

instrument sensor modules) need to be applied,

to verify sensor response and alarm function.

Note: Please see The Linde Group data sheet

“Gas Detector Calibration Frequency” for further

advice on bump testing and calibration.

The Linde Group manufactures and supplies Gas Test

Cylinders under numerous global product brands,

including Linde, BOC, AGA, Afrox etc. The Linde

Group gases supplied for use with your G-TECTA™

4GP gas detection instruments are specially

formulated, high stability long life multi-gas mixes.

The G-TECTA™ 4GP instrument will determine

Pass/Fail status for the gas test.

In order to perform successful gas tests ensure:

The gas used has the recommended gas •

concentration and it is within the validity date

speciﬁed by The Linde Group

The gas ﬂow path is leak tight. It is important •

to check that the ﬂow cap is properly ﬁtted

to the G-TECTA™ 4GP unit, the outlet hose is

not restricted in any way, nor additional hose

length used.

The G-TECTA™ Gas Test Kit comprises a full gas

cylinder and regulator with interconnecting hose, a

gas test key (used to activate Gas Test Mode on the

instrument), a ﬂow cap to attach to the G-TECTA™

4GP, and a vent line. The Gas Test Kit is supplied in a

convenient carry case.

Gas in

Gas out

Flow adapter

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