ST8900 4 in 1 Gas Detector Oxygen O2 Hydrogen Sulfide H2S Carbon Monoxide CO Combustible Gas Lel Gas Analysis

ST8900 4 in 1 Gas Detector Oxygen O2 Hydrogen Sulfide H2S Carbon Monoxide CO Combustible Gas Lel Gas Analysis

Regular price $334.99
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ST8900 4 in 1 Gas Detector Oxygen O2 Hydrogen Sulfide H2S Carbon Monoxide CO Combustible Gas Lel Gas Analysis

Description:


This product is a portable handheld instrument that can continuously monitor four different gases: CO, H₂S, O₂, and LEL. When these gases are detected, all concentrations will be displayed on the LCD. The unit also provides user-configurable high and low alarms, as well as STEL/TWA alarm functions. Once the alarm conditions are exceeded, the device has audio and vibrating visual alarms.


Features:


1. It can detect 4 kinds of gases: carbon monoxide (CO), hydrogen sulfide (H2S), oxygen (O2) and combustible gas (LEL).

2. The concentration of CO, H₂S, O₂ and LEL gas in the environment can be continuously monitored, and the measurement is professional and accurate.

3. When the concentration of any one of CO, H₂S, O₂ and LEL reaches the alarm level, the sound and light vibration alarm works.

4. Provide automatic shutdown time and concentration alarm value.

5. Equipped with a large color LCD screen with backlight, which is convenient for reading at night and works normally.

6. It can be connected to a sampling pump to operate in a confined place.

7. It is widely used in shipping, mining, petroleum exploration, chemical industry, gas pipeline, tunnel construction, coal, metallurgy, papermaking, fire protection, municipal administration, textile and other industries.


Specifications:

Sensor specifications

Gas

Range

Resolution

Carbon monoxide (CO)

0-999pm

1ppm

Hydrogen Sulfide (H2S)

0-500ppm

1ppm

Oxygen (O2)

0-30%

0.1%

Combustible gas (LEL)

0-100%

1%

Other specifications

Model

ST8900

Working current

230mA

Working voltage

3.7V

Battery type (included)

BL-9C rechargeable battery

Operating humidity

15%-95%

Storage temperature

0-40℃

Short circuit current

3A

Maximum open circuit voltage

≤ 4.2V

Display type

Segment LCD

Operating temperature

-10°C-50°C

Weight

360 grams

Battery working time

6 hours (no alarm clock)

Detection gas

carbon monoxide (CO, hydrogen sulfide (H2S), oxygen (O2), combustible gas (LEL)

Solution

CO: 1ppm, H2S: 1ppm, O2: 0.1% VOL, LEL: 1% LEL

Warm-up time

<20 seconds

Size

75*138*43MM


Package Included:


1 * Multi-function gas meter

1 * User Manual

1 * Charging adapter

1 * USB data cable

1 * Calibration certificate



(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.

Note:

(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

for more information please visit our Shipping Policy Page.

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Sizing & Fit Guide

Please be aware that most of our clothing is Juniors' sizing, which runs smaller than regular US / European Women sizing. Refer to the measurements chart for each individual product to determine the best size for you. Product specific size chart and information can be found in product description or in product picture gallery.

Our team does it's best to include accurate size details and measurement of each item in the product descriptions. If you have questions regarding sizing or any other information on a specific item, please email us at support@mrslm.com for specific details.

Find the best size

When comparing your measurements to those listed on the site, make sure to check if the fabric is stretchy or not. If it is, it can stretch an inch or more.

  • Bust: Wrap the measuring tape loosely around the fullest part of your bust to ensure a comfortable fit.
  • Waist: Measure the narrowest part of your natural waist, holding the measuring tape loose enough to fit comfortably.
  • Hips: Drape the measuring tape around the widest part of your hips, resting the tape comfortably against your body.
  • Length: For tops and dresses, measure from the top of your shoulder to the hem. For strapless dresses, measure from the highest part of the neckline to the hem. For pants and skirts, measure from the top of the waist to the hem.
  • Sleeve: With your arm outstretched, measure from the base of your neck to the end of the sleeve hem to determine where the sleeve length will fall on you.

Size Chart


Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Tops Size Chart

Tops Size Chart (Inch)
TOPS
SIZE IN INCHES
SIZE US / CAN BUST WAIST
XS 0 31"-32" 24"-25"
S 2-4 33"-34" 26"-27"
M 6-8 35"-36" 28"-29"
L 10-12 37"-39" 30"-32"
XL 14 40"-42" 33"-35"
Tops Size Chart (cm)
TOPS
SIZE IN CM
SIZE US / CAN BUST WAIST
XS 0 78.7-81.2 60.9-63.5
S 2-4 83.8-86.3 66-68.5
M 6-8 88.9-91.4 71.1-73.6
L 10-12 93.9-99 76.2-81.2
XL 14 101.6-106.6 83.8-88.9

Bottoms Size Chart

Bottoms Size Chart (Inch)
BOTTOMS
SIZE IN INCHES
SIZE US / CAN WAIST HIPS
XS 0 24"-25" 34"-35"
S 2-4 26"-27" 36"-37"
M 6-8 28"-29" 38"-39"
L 10-12 30"-32" 40"-42"
XL 14 33"-35" 43"-45"
Bottoms Size Chart (cm)
BOTTOMS
SIZE IN CM
SIZE US / CAN WAIST HIPS
XS 0 60.9-63.5 86.3-88.9
S 2-4 66-68.5 91.4-93.9
M 6-8 71.1-73.6 96.4-93.9
L 10-12 76.2-81.2 101.6-106.6
XL 14 83.8-88.9 109.2-114.3

Denim Size Chart

Denim Size Chart (Inch)
DENIM
SIZE IN INCHES
WAIST SIZE JUNIOR SIZING WAIST LOW WAIST HIPS
24 0 24"-25" 26"-27" 32"-33"
25 1 25"-26" 28"-29" 33"-34"
26 3 26"-27" 30"-31" 34"-35"
27 5 27"-28" 31"-32" 35"-36"
28 7 28"-29" 32"-33" 36"-37"
29 9 29"-30" 33"-34" 37"-38"
30 11 30"-31" 34"-35" 38"-39"
31 13 31"-3" 35"-36" 39"-40"
32 15 32"-33" 36"-37" 40"-41"
Denim Size Chart (cm)
DENIM
SIZE IN CM
WAIST SIZE JUNIOR SIZING WAIST LOW WAIST HIPS
24 0 60.9-63.5 66-68.5 81.2-83.8
25 1 63.5-66 71.1-73.6 83.8-86.3
26 3 66-68.5 76.2-78.7 86.3-88.9
27 5 68.5-71.1 78.7-81.2 88.9-91.4
28 7 71.1-73.6 81.2-83.8 91.4-93.9
29 9 73.6-76.2 83.8-86.3 93.9-96.5
30 11 76.2-78.7 86.3-88.9 96.5-99
31 13 78.7-81.2 88.9-91.4 99-101.6
32 15 81.2-83.8 91.4-93.9 101.6-104.1

Swimwear Size Chart

Swimwear Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"
Swimwear Size Chart (cm)
SWIMWEAR
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 83.8-86.3
S 2 83.8-86.3 66-68.5 88.9-93.9
M 4 88.9-91.4 71.1-73.6 93.9-96.5
L 6 93.9-99 76.2-81.2 99-104.1
XL 8 101.6-106.6 81.2-88.9 106.6-111.7

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.

NOTE:

  • All models are wearing size small in tops and dresses, and size 1, 3, or 5 in jeans depending on their body type.
  • Most kalles jeans & dresses have some stretch, please refer to product description for fabric details.
  • Most kalles bottoms have an inseam of 31-34” depending on the cut and style. Sizing may vary depending on cut and style.

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