LANDTEC BG3K2, Руководство по эксплуатации, Страница: 23 / 181

Operating Manual
BIOGAS 3000 Overview
23
© Copyright 2016 OMBG3000 – Rev1
Warning For this option, additional filtration will be required
external to the equipment on ‘Sample Gas 1’.
BG3KD
3.5.5

The BG3KD measures CH
4
, CO
2
, O
2
and high and low range H
2
S as
standard (high range internal to the module and low range external)
from two sample points.

It has user selectable sample and air purge intervals that are exhausted
back to the process and atmosphere respectively.

The system has bypass solenoids in order to divert high levels of H
2
S
from the low range sensor, which will prolong its life.

The 4-20mA and Modbus outputs are updated at the end of each
sample.

The following image is a simple block diagram of the system:
BG3KE
3.5.6

The BG3KE measures CH
4
, CO
2
, and O
2
as standard with a choice of up
to one additional gas (external to module only) from one sample point.

It measures CH
4
, CO
2
, and O
2
continuously that is exhausted back to the
process.