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3.3
Mounting with a sampling cell
EE371 mounting with a sampling cell is recommended:
• in case of high process temperature
• for keeping the sensing head out of the main air (gas) stream
• for easy installing / removing the probe without process disruption.
Please note:
• Pressure gradients between the process and the sampling chamber lead to significant measuring
errors.
• The mounting of EE371 with sampling cell shall be tight; moisture ingress from the surroundings
falsify the measurement results. Do not employ any hygroscopic materials for mounting EE371 or the
sampling cell.
• Keep the sampling line as short as possible.
• The response time increases for air (gas) flow < 1 l/min (0.25 gpm).
• A too low gas flow can result in back-diffusion of humidity from the environment and consequently to
false measurement.
3.3.1
Basic sampling cell
Pressure range: 0...64 bar (0...928 psi)
Order code: HA050103 (ISO)
3
Fig. 4
Basic sampling cell
3.3.2
Sampling cell with quick connector
The sampling cell features a quick-connector suitable for standard compressed air connections DN7.2.
It allows the cell to be installed and removed without process interruption.
The air (gas) flow along the sensing head of EE371 can be adjusted using the bleed screw.
Pressure range: 0...10 bar (0...145 psi)
Order code: HA050102
3
Fig. 5
Sampling cell with quick connector
Manual EE371 Dew point transmitter
HA050105 (NPT)
1
2
1
2
3
1
2
1
G 1/2" ISO
2
Bleed screw
3
Quick connector DN7.2
ISO
nPt
G 1/2"
1/2"
G 1/4"
1/4"
G 1/4"
1/4"
9
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