Supply of Portable Combustible Gas Detector

The company bids for the following:-

* Qty=10Nos.,Portable Combustible (LEL) Gas Detector with digital indications and alarms and in-built suction pump for sampling complete with carrying case, shoulder traps, respiratory bulb with not less than 5 m long sampling line.

Technical Specification:
1. Type of Sensor: Catalytic Plug & Play
2.Measuring principle: Heat of Reaction & Thermal Conductivity
3. Measuring Gas: Combustible Gases (LEL)
4. Measuring Range: 0 – 100% LEL / 0 – 5 Vol% / 0 – 100 Vol%
5. Resolution: 1% LEL (For 0 – 100% LEL), 0.01 Vol% (For 0 – 5 Vol%) & 1 Vol% (For 0 – 100 Vol%)
6. Alarm: Audio Visual Alarm for Low Battery, Low and High Range
7. Typical Response Time: ? 15 Seconds
8. Display: 7 Segments LCD (Display for Alarm, LEL%, Low Battery, Calibration etc.) with backlight
9. Power Pack: Nickel-Cadmium Rechargeable Battery Pack
10. Operating Time: ? 12 Hours
11. Charging Time: ? 4 Hours
12. Minimum Sensor Life: 2 Years
13. Approval: Directorate General of Mines Safety (DGMS), Dhanbad
14. Hazardous area: Intrinsically Safe, Explosion Proof suitable for use in Class – I, Division – I, Group – I, IIA, IIB, IIC and Dust Area Zone 21 and 22
15. Operating Temperature: - 20 Deg. C to + 55 Deg. C
16. Ingress Protection: IP 65
17. Features: Auto Zero Self Check, Auto Diagnostics
18. Additional Features: Data Logging Capability (up to 50 hrs.)
19. Humidity: 10 to 95% R.H.
20. Accessories with each unit: Protective Carry Case (Leather),
Sampling Kit with Probe/Filter with PVC tubing (5 meter) Aspirator Bulb, Single unit Battery Charger (Supply 230 VAC), Rechargeable Battery, Installation Software with Interface Data link Cable.
21. Weight & Size: Light Weight, Hand-Held, Portable, Not more than 500 gm
22. Instruction Manual: Complete in all respect should be provided

Standard Accessories
1. Spare Sensor for above Gas Detector: 10 Nos.
2. Calibration Gas (Methane): Pressurized in Portable Cylinder / Can of 3 litres capacity with 50% LEL – 2 Nos.

* Spare Sensor for above Gas Detector: 30 Nos. Calibration Gas (Methane): Pressurized in Portable Cylinder / Can of 3 litres capacity with 50% LEL – 6 Nos.

* Spare Sensor for above Gas Detector: 10 Nos. Calibration Gas (Methane): Pressurized in Portable Cylinder / Can of 3 litres capacity with 50% LEL – 2 Nos.

* Qty=02Nos.,Portable Combustible (LEL) Gas & Oxygen Level Detector (Multigas) with digital indications and alarms and in-built suction pump for sampling complete with carrying case, shoulder traps, respiratory bulb with not less than 5 m long sampling line with technical specification as follows:

1. Type of Sensor: Catalytic Plug & Play
2. Measuring principle: Heat of Reaction & Thermal Conductivity
3. Measuring Gas: Combustible Gases (LEL) and Oxygen Level
4. Measuring Range:
(a) For Combustable Gases (LEL): 0 – 100% LEL / 0 – 5 Vol% / 0 – 100 Vol%
(b) For Oxygen: 0 - 30% of Volume
5. Resolution:
(a) For Combustable Gases (LEL): 1% LEL (For 0 – 100% LEL), 0.01 Vol% For 0 – 5 Vol%) & 1 Vol% (For 0 – 100 Vol%)
(b) For Oxygen: 0.1% increment.
6. Alarm: Audio Visual Alarm for Low Battery, Low and High Range
7. Typical Response Time: ? 15 Seconds
8. Display: 7 Segments LCD (Display for Alarm, LEL%, Low Battery, Calibration etc.) with backlight
9. Power Pack: Nickel-Cadmium Rechargeable Battery Pack
10. Operating Time: ? 12 Hours
11. Charging Time: ? 4 Hours
12. Minimum Sensor Life: 2 Years
13. Approval: Directorate General of Mines Safety (DGMS), Dhanbad
14. Hazardous area: Intrinsically Safe, Explosion Proof suitable for use in Class – I, Division – I, Group – I, IIA, IIB, IIC and Dust Area Zone 21 and 22
15. Operating Temperature: - 20 Deg. C to + 55 Deg. C
16. Ingress Protection: IP 65
17. Features: Auto Zero Self Check, Auto Diagnostics
18. Additional Features: Data Logging Capability (up to 50 hrs.)
19. Humidity: 10 to 95% R.H.
20. Accessories with each unit: Protective Carry Case (Leather), Sampling Kit with Probe/Filter with PVC tubing (5 meter) Aspirator Bulb, Single unit Battery Charger (Supply 230 VAC), Rechargeable Battery, Installation Software with Interface Data link Cable.
21. Weight & Size: Light Weight, Hand-Held, Portable, Not more than 500 gm
22. Instruction Manual: Complete in all respect should be provided

Standard Accessories
1. Spare Sensors for above Gas Detector: 2 Sets (2 nos. each =
2 nos. LEL and 2 nos. Oxygen)

* Spare Sensors for above Gas Detector: 10 Sets (10 nos. each
= 10 nos. LEL and 10 nos. Oxygen). Calibration Gas (Methane): Pressurized in Portable Cylinder / Can of 3 litres capacity with 50% LEL – 2 Nos.