Bosean Electronic Technology BH-90a Manuel utilisateur

BH-90a

Portable Single gas Detector

User Manual

Ver：BSA20150424005

Bosean Electronic Technology Co.,Ltd

ISO9001-2008

Bosean Electronic Technology Co.,Ltd www.bosean.com

Tel:86-371-86533226 Email: sales@bosean.com

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To avoid personal safety injury, Instrument damage and potential dangerous accident;

do not use the product before reading this manual.

1. Description

BH-90a portable single gas detector can make continuous

detection to combustible and toxic gases. It is suitable for

combustible and toxic gas leakage detection in

underground pipe or mines, and keeps the workers safe,

prevents the facilities from being destroyed.

The detector, adopting excellent-quality sensor, makes

detection in the way of natural diffusion. It has good

sensitivity and reproducibility. The detector adopts

embedded MCU controller, easy to operate.

The shell adopts special high strength material and

anti-smooth rubber, with the characters of water-proof and dust-proof.

2. Features and specifications

2.1 Features

Advanced MCU control with low power consumption;

Adjustable low and high alarm level;

Adjustable calibrating level;

High concentration protection for combustible gas;

Self test for the combustible gas sensor;

Low battery indication;

Self-adjustment function

Visual and audible alarm with vibration;

Advanced self-examination and self-renovation function

Password management to avoid wrong operation;

Explosive proof housing

2.2 Specifications

Range: See attached table 1.

Gas Detected: combustible gas (CH4,C3H8,H2) and toxic gas, oxygen, Other rare

toxic gas like ammonia, NO, PH3, NH3, NO2, HCN, SO2etc also available,Can be

specified by the Customer in advance.

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Alarm set points: see attached table 1.

Accuracy: ≤±5% F.S. Response time: T<30s

Indication: LCD indicates the time and state

Indication of alarm, fault and low voltage with LED, sound, vibration

Operating Environment:

Operating temperature -40℃～70℃(for combustible gas)

Operating temperature: -10℃～55℃(for toxic gas)

Humidity: <95%RH non-condensing

Operating voltage: DC3.7V Li battery 1500mAh

Working time: < 8h continuously

Charging time: 4h～6h

Sensor life: 2 years

Protection category: IP65

Weight: about 130g (including battery but without accessories)

Dimension: 109mm×60mm×30mm

3. Structure & Function

3.1 Appearance

Alarm light

Buzzer

Buttons

USB charging connection

LCD screen

Sensor

Back clip

3.2 Detector structure: the main shell, circuit boards, batteries, display, sensors,

chargers of the components.

3.3 Principle: Electrochemical or Catalytic sensor or others.

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4. Operation & Function

4.1 Display Elements

Gas type

10:45

Time

Full voltage

ppm

Concentration value

25.5 ℃

Temperature

4.2 Push buttons

Push button

Description

To active the detector, press and hold it for 5 seconds

Press it to cancel the the operation;

To deactive the detector, press and hold it for 5 seconds

Press it to set up the parameters

▼▲

Can check parameters, alarm record, low alarm, high alarm, zero

calibration, calibration,time set.

4.3 Turn on

Press the button for 5s and then release it. The interface shows “Starting”, “LED

Testing”, and then vibrates with “Motor Testing”, then beep and flashes with “Sound and

Alarm Testing”, shows low alarm value, high alarm value, detecting range, it enters into

detecting status.

At this time, it displays the concentration of gas in the environment as figure 1.

Fig 1

0ppm

25.5 ℃10:45

0ppm

25.5 ℃10:45

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4.4 Turn off

To deactivate the detector, press key, then it displays the following information:

At this time, the buzzer gives beep sound. After 3 seconds, when it displays the

following figure on the screen, loosen the key. The detector is turned off.

Attentions：When the detector is not detecting status, press continuously till it

returns to the detection mode.

4.5 Menu Operating Instructions

The user menu contains the following options:

Zero calibration, calibration, time set, alarm record, low alarm settings, high alarm

settings, unit set.

In the detection state, press key, the screen displays the following screen, directly

into user menu as shown in figure 4:

Fig. 4

→ Gas Zero

Gas Calib

Set time

Record

LA Set

HA Set

Unit set

ESC

Turn off

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Parameter setting of the detector

Display

Description

Fig 5

Fig 6

Fig 7

Fig 8

1. Zero function setting

Press the button in the menu interface, the

interface shown as Figure 14: press key to enter

into the zero setting page as Figure 5: press the

button ▲for zero drift, as shown in Figure 6: the

instrument directly into the menu settings page, press

the button to save the drift value, interface as

shown in Figure 7: the instrument directly into the

menu screen, press the button again, the

instrument enters the normal detection interface.

Warning: this operation is to ensure that the operation

is carried out in clean air, otherwise the concentration

of the reaction gas in the environment will affect the

accuracy of the portable gas detector.

Fig 9

Fig10

2. Calibration settings function

Press the button in the menu interface, move

the cursor with▼key, the interface shown as Figure

9: press enter into the calibration setting page as

Figure 10: press ▲to choose number, press ▼to

adjust the number, input password 8888 and press

the button into calibration interface.

Input the standard calibration gas value in the

calibration interface as Figure 11, for example, CO, it

s 500ppm on the gas cylinder, input 500, and press

“Next” into gas entry interface as Figure 12.

Please inject standard calibration gas, once the

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Fig11

Fig12

value is stable after 2 minutes, press “SAVE”

calibration is done. The rate of flow 500ml/min is

recommended.

Fig13

Fig14

Fig15

3. Time setting

Press the button in the menu interface, move

the cursor with▼key, choose the set time, the year

interface shown as Figure 13: press → to move the *,

press ▲to adjust number, press Next to confirm.

After set year, press next, you can set month, date,

hour, minute, Press “SAVE” to complete the time set.

Fig16

4. Alarm Record

Enter alarm record interface, display date and

max alarm value, it save the max alarm value every 3

minutes as shown Figure 16, “11.29.12.36” means

29th November 12:36, “65” display the max alarm

value within 3 minutes. Press “ESC” return main

interface, Press ▼to delete the record as shown

Figure 17.

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Fig17

Fig18

5. Low alarm setting

Enter “LA set” menu, use ▲to adjust the cursor, use

▼to adjust the value, choose the right value and

press “SAVE”. then it will return the normal detecting

interface show as Figure 18. If no special

requirement, please do not revised alarm value.

6. High alarm setting

The setting is same as low alarm setting. Note: High

alarm value never lower than low alarm value. If no

special requirement, please do not revised alarm

value.

Fig19

7. Unit set

Enter “Unit set” function show as Figure 19, choose

the suitable unit and save it. Note, this function can

be used on the PPM unit gas.

Fig20

8. ESC

Under the menu function interface, choose ESC,

press to return normal detecting interface.

Fig21

9. Turn off

Under the menu function interface, choose “Turn off”,

press ▲to turn off, press ▼to return normal

detecting interface.

4.6 Alarm information

The following table shows the details of each alarm:

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Alarm type

Low alarm:

Short slow alarm tone;

The alarm indication is yellow;

The red alarm light flashes;

Device vibrates .

High alarm:

Abnormal harsh alarm tone;

The alarm indication is red;

The red alarm light flashes;

Device vibrates.

Low battery alarm:

When the device is in low battery, it will give slow short

alarm every minute to remind user.

4.7. Charging

Please charge the detector when it shows low battery or the detector can’t be turned on

due to low battery. Before charging, please turn off the detector to avoid any potential

damage. When the battery mark on the screen is full and doesn’t change any more, it

means the charging is completed, you can pull off the charger.

Warning: During charging status, the detector can’t detect the gas leakage. Please do

not try to charge it at testing places to avoid fire or explosion. Please do not charge it

when the detector is working to avoid potential damage.

Note: Make sure full charge for at least once within 1 months

If do not use it for a long time.

5. Possible fault and corresponding solution

Possible fault

Possible reason

Corresponding solution

No response to alarm

Wrong alarm point

Please reset the alarm point

Fault of electric circuit

Please contact the manufacturer

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No response to gas

detected

Zero drift

Calibrate zero point

Fault of electric circuit

Please contact the manufacturer

Inaccurate indication

Sensor is overdue

Please contact manufacturer to

replace gas senor

Uncalibrated for long time

Please calibrate it in time

Insufficient working

hours

Fault of Charger

Please change charger

Fault of the Device

Please contact the manufacturer

Can not charge

electricity

Fault of Charger

Please change charger

Fault of the Device

Please contact the manufacturer

6. Notices

6.1 Falling down from high places or strong shake is prohibited.

6.2 The detector may not work properly at interferential high-concentration gas.

6.3 To avoid incorrect result or possible damage to the detector, please operate and

handle the detector in accordance with the manual.

6.4 The detector should be not stored or used neither under the circumstance with

caustic gas (such as Cl2), nor under the other rugged circumstances, including

excessive high or low temperature, high humidity, electromagnetic field and strong

sunshine.

6.5 If there is dust on the surface of the detector after a long-term use, please clean it

lightly with clean soft cloth. The surface may be scraped or destroyed with caustic

solvent or hard things.

6.6 To assure the testing accuracy, the detector should be calibrated periodically. And

the calibration period should be less than one year.

6.7 Please put the used Lithium batteries to the appointed places or send to our

company. Don’t discard them into the dustbin randomly.

7. Standard accessories:

Gas detector 1pc

Calibration cap 1pc

Charger 1pc

User manual 1pc

Suit case packaging 1pc

Warranty card 1pc

Quality card 1pc

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