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| Brand Name: | CESTSEN |
| Model Number: | EST-301 |
| MOQ: | 1 pieces |
| Delivery Time: | 7-15 Working day |
| Payment Terms: | T/T |
Gas Detection Alarm-Wall-mounted Installation Offers The Option Of Multiple Probes
1. Product introduction
EST-301-O3 fixed ozone detector is a fixed gas concentration measuring instrument, which adopts high-precision circuit design, and its core is imported sensor chip. It has been developed and calibrated by Wanyi Technology, signal amplification, calibration and strict testing before it is delivered to the factory.
Design and production of instruments shall be in accordance with relevant national standards:
GB/T18883-2002 Indoor Air Quality Standard GB3095-1996 Ambient Air Quality Standard
GB50325-2010 Code for Indoor Environmental Pollution Control in Civil Construction Engineering
GB50325-2001 Code for Indoor Environmental Pollution Control of Civil Building Engineering
Industrial standard of GB12358-2006 "General technical requirements for environmental gas detection and alarm devices in workplaces"
2.Product highlights
1.The design of flameproof safe cavity meets the requirements of IEC60079 for flameproof electrical appliances; Aluminum explosion-proof shell has good sealing, corrosion resistance, long life, low temperature resistance, resistance to sulfide and silane gas poisoning; Suitable for offshore platforms and various harsh environments such as high temperature and high humidity.
2.Adopt advanced imported sensors, with high precision, long service life, high repeatability and stability.
3.Automatic identification of sensor probes, sensor probes of different gas types can be used; After replacing the sensor probe, the program automatically identifies and obtains parameters such as gas type, range, low alarm value and high alarm value.
4.With backlight LCD, the concentration value is displayed on site, and the control unit is not affected by on-site and remote setting and maintenance; Magnetic induction completes calibration and parameter setting in a non-contact way.
5.Four ultra-bright LED lights, prompting power supply, low and high alarms and function prompts respectively, and the low and high alarm action values can be programmed; At the same time, the sound alarm sounds and informs the field staff at the first time.
6.With digital/analog signal output, the analog signal is a standard three-wire 4-20mA current signal; The digital signal is RS485, which can communicate with the upper computer very conveniently.
7.It can be provided with a password to enter the menu to prevent other personnel from arbitrarily operating and changing parameters, which is safe and reliable.
8.A variety of ways of use, such as: wall-mounted, column-mounted and other installation methods.
3.Technical indicators
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1. Working voltage: 12-30VDC |
18. Working temperature:-10℃ ~+40℃ |
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2. Working current: 20-30mA (static) |
19. Relative humidity: ≤ 95%RH without solidification. |
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3. Display mode: 4-bit LCD with backlight. |
20. Atmospheric pressure: ±10% atm |
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4. Display unit: PPM |
21. Signal output: 3-wire 4-20mA (analog) and RS485 (digital) |
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8. Detection object: hydrogen chloride |
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9. Detection principle: electrochemistry |
22. Transmission distance: ≤100m(4-20mA) and ≤1000m(RS485). |
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10. Detection method: diffusion type. |
23. Explosion-proof grade: Ex d IIC T6 |
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11. Response time: 40s. |
24. Protection grade: IP65 |
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12. Alarm value: settable (0 means to cancel the alarm). |
25. Connection mode: M20*1.5 internal thread |
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13. Alarm mode: two-stage acousto-optic alarm (external acoustic alarm, optional). |
26. Installation method: wall-mounted |
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14. Alarm error: ≤ 5% alarm setting value. |
27, shell material: aluminum explosion-proof shell (main shell), stainless steel (attached |
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15. Output of contact capacity: 10A 250VAC |
Pieces) |
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16. Repeatability: ≤ 2%; |
28. Overall machine size: 226*177*92mm. |
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17. Stability: ≤ 2% f.s/6h (zero point), ≤ |
29. Overall weight: about 1.5kg. |
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5%F.S/6h (gain) |
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Range selection:
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model |
Gas type |
Standard range |
display resolution |
sensitivity |
precision |
Response time |
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EST-301-O3-20 |
ozone |
0-20PPM |
0.01PPM |
0.03PPM |
±5%F.S. |
<50S |
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EST-301-O3-100 |
ozone |
0-100PPM |
0.1PPM |
0.06PPM |
±5%F.S. |
<50S |
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EST-301-O3-200 |
ozone |
0-200PPM |
0.1PPM |
0.1PPM |
±5%F.S. |
<50S |
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The sensitivity is the lowest test concentration of the instrument, and the above is the conventional gas concentration measurement range, and other ranges can be customized if needed. |
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