![Air Monitor VELTRON DPT-plus Скачать руководство пользователя страница 14](http://html1.mh-extra.com/html/air-monitor/veltron-dpt-plus/veltron-dpt-plus_installation-operation-and-maintenance-manual_2875322014.webp)
VELTRON DPT-
plus
Air Monitor Corporation
116-010-91.P65 (09/18/09)
VELTRON DPT-
plus
- IO&M Manual
9
SECTION 4 – INSTALLATION
4.4 – PROCESS CONNECTIONS
The VELTRON DPT-
plus
has two 1/4"-18 FPT process connections at 2-1/8" center-to-center on the bottom of the
stainless steel base.
Figure 4.3
To the selected process connections, customer should install appropriate fitting required to connect process signal
tubing/piping from process sensor.
When connecting the VELTRON DPT-
plus
to an airflow measuring device, connections must be completed as follows:
– High Port on VELTRON DPT-
plus
connects to Total Pressure from airflow measuring device.
– Low Port on VELTRON DPT-
plus
connects to Static Pressure from airflow measuring devices.
When connecting VELTRON DPT-
plus
for positive room pressurization, connections must be completed as follows:
– High Port on VELTRON DPT-
plus
connects to sensor from monitored room.
– Low Port on VELTRON DPT-
plus
connects to reference sensor.
When connecting VELTRON DPT-
plus
for negative room pressurization, connections must be completed as follows:
– High Port on VELTRON DPT-
plus
connects to reference sensor.
– Low Port on VELTRON DPT-
plus
connects to sensor from monitored room.
Although any size of tube/pipe can be used, the response time of the VELTRON DPT-
plus
to process change increases
if with increasing tube/pipe size or increasing in tube/pipe length.
CAUTION
It is extremely important that no pressure be present in signal tubing at the time
of installation, and the orientation of high and low pressure signal lines
is maintained between the source and the VELTRON DPT-
plus
.