Pico GC THT-TBM

Analysis System of odorants quantity in fuel gas

Pico GC is an automatic gas chromatographic solution for the continuous determination of the odorants (THT or TBM) amount injected into the distribution network.

The automatic odorants quantity measurement system consists of two parts: a compact and reliable micro-gas chromatograph suitable for installation directly in the gas network proximity and a SCADA data storage, processing, and communication system.

This device is ATEX Zone 1 certified  and carries out the analysis in a similar way to gas chromatographic systems that are currently used in a portable way.

The system makes it possible for continuous, unattended monitoring of the odorant rate in distribution networks. This allows gas network operators to ensure that the minimum odour rate required by law is respected. At the same time, it allows minimizing the amount of odorant injected saving money without compromising safety.

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Enclosure Pico GC ATEX

IP66, 450 x 350 x 251 mm, <27 kg

Certifications Pico GC

CE ATEX II 2G Ex db IIB+H2 T6 Gb – IECEx Ex db IIB+H2 T6 Gb

RCB Enclosure

IP66 325 x 428,2 x 178 mm, 4 Kg

Gas Carrier

Helium (He) or Hydrogen (H2):

  • duration He gas cylinder 14L @200 barg: 9 years with (4 analysis/hours)
  • duration H2 gas cylinder 14L @200 barg: 8 years with (4 analysis/hours)
  • quality purity: 5.5; ≥ 99.9995%
  • pressure: 3.5 ± 0.5 barg
THT Compounds analysed

Range: 0 – 200 mg/Sm3
Detection Limit (S/N = 3): 0.5 ppm – 1.86 mg/Sm3

TBM Compounds analysed

Range: 0 – 200 mg/Sm3
Detection Limit (S/N = 3): 0.5 ppm – 1.91 mg/Sm3

Repeatability

Retention time: ≤ 0.04%% RSD
THT: <0.6 % %RSD @ 32.0 mg/Sm3 (32 ± 0.5 mg/Sm3)
TBM: <3 %RSD @ 9.3 mg/Sm3 (9.3 ± 0.6 mg/Sm3)

Operating Temperatures

From -35°C a +60°C- Outdoor

Nominal power consumption

35 W @ 0°C; maximum absorption of current 120 W

Minimum Analysis Time

30-120 seconds (according to the carrier gas)

Brochure Pico GC THT – TBM (EN)
File type: Pdf
Size: 1.34 MB
Language:
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Monitoraggio continuo e automatizzato dei composti odorizzanti TBM o THT nelle reti di Distribuzione del Gas Naturale
TBM or THT odorants compounds monitoring in natural gas distribution networks

Natural gas, biomethane and LPG (Liquefied Petroleum Gas) circulating in distribution networks or stored in special tanks, are gas mixtures which are odorless. In order to allow leak to be detectable also by people without specific instruments, they add some substances, called Odorants, used to odorize above-mentioned gas and make them detectable to human nose. […]
RCB

Remote Control Box (RCB)
Pollution Guardian

Pollution Guardian

Market:

Gas | Energy

Compounds:

C4H10S, C4H8S

Technology:

GC, microGC, TCD

Brand:

Pollution