Tubing (Optional) - Honeywell SPM Flex User Manual

SPM Flex Gas Detector

Tubing (optional)

Sample and exhaust tubing calculations
This table shows the flow rate, tubing length, transport time, and maximum
pressure and vacuum at the inlet and exhaust points�
Allowable tubing lengths vary among gases (see
62)� If the pressure or vacuum on the inlet/exhaust lines does not meet the
recommended values, the detector may encounter flow faults� The maximum total
tubing length (inlet + outlet) is 100 ft� (30 m)�
Description
Tubing length, ft. (m)
Transport time (sec)
Inlet
Flow rate (cc/min.)
Tubing OD. in. (mm)
Tubing ID, in. (mm)
Tubing length, ft. (m)
Outlet Tubing OD, in. (mm)
Tubing ID, in. (mm)
The overall maximum load on the pump between the inlet and the exhaust should not exceed 10 inches H
CAUTION
!
Do not operate the detector in a positive-pressure environment� Refer to
TechNote 1998-0195 R1 Sampling Point Guidelines.
An external filter must be installed on the detector's "in" line for most gases (see
"Detectable Gases" on page
for local monitoring, or at the end of the sampling line, for remote monitoring� A
filter can also be installed on the exhaust port to reduce noise�
filter
Figure 17. External filter
26
Sample Specifications
100 (30) 66 (20)
19 13
700-1200 (flow is set and controlled per calibration)
0.125 (3.18)
0.188 (4.76)
62)� Filters can be placed either at the detector,
(arrow indicates
direction of flow)
push
fittings
"Detectable Gases" on page
Value
33 (10) 0
7 1
0.25 (6.35)
100 (30)
0.25 (6.35)
O.
2