EBTRON HTx104-F SWSI or DWDI Fan Airflow Measurement Instruction Manual

: June 5, 2024
: EBTRON

Table of Contents

HTx104-F SWSI or DWDI Fan Airflow Measurement
REFER TO FIGURE “A” WHEN COMPLETING STEPS 2 TO 15.
References
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HTx104-F SWSI or DWDI Fan Airflow Measurement
Instruction Manual

HTx104-F SWSI or DWDI Fan Airflow Measurement

-F Probe Installation (Forward Mounting)

Step 1. Select a location on the fan that allows clearance for probe placement and installation.
Single and dual inlet fan applications (-F/SI and -F/DI) use two probes per inlet, one each LEFT and RIGHT. Fan array models (-F/An) can use either one or two probes per inlet. If using one probe per inlet it is recommended to install probes alternating LEFT and RIGHT starting with LEFT in fan 1.
If installing two probes in the fan inlet, probes should be installed parallel to each other.
It is recommended probes be installed vertically with sensors on the horizontal centerline and cables exiting downward. Due to obstructions in the fan inlet it may be necessary to rotate the probes to complete installation.

REFER TO FIGURE “A” WHEN COMPLETING STEPS 2 TO 15.

When installing probes, the sensor housing shroud should always be pointing toward the side of the fan inlet bell indicated by the LEFT/RIGHT labels of the sensors. Figure “A” shows the LEFT side probe.
Step 2. Mark the centerline [10] of the fan inlet bell [1].
Step 3. Measure the diameter `b’ straight across the horizontal centerline of the fan inlet bell [1], from where the flat outer flange of the fan inlet bell ends and the radius begins [2].
Step 4. Use the following table to determine ‘a’ (the distance from the vertical centerline [10] of fan to the centerline of the mounting feet [3]):
Table 1. Forward Mount Dimension ‘a’ Determination

Inlet Face
Diameter “b” (in)| “a” (in)| Inlet Face
Diameter “b” (mm)| “a” (mm)| | Inlet Face Diameter “b” (in)| “a” (in)| Inlet Face
Diameter “b” (mm)| “a” (mm)| | Inlet Face
Diameter “b (in)| “a” (in)| Inlet Face
Diameter “b” (mm)| “a” (mm)
---|---|---|---|---|---|---|---|---|---|---|---|---|---
6| 1-10/16| 152.40| 41.28| 26| 8-11/16| 660.40| 220.66| 46| 15-12/16| 1168.40| 400.05
7| 2| 177.80| 50.80| 27| 9-1/16| 685.80| 230.19| 47| 16-2/16| 1193.80| 409.58
8| 2-5/16| 203.20| 58.74| 28| 9-6/16| 711.20| 238.13| 48| 16-8/16| 1219.20| 419.10
9| 2-11/16| 228.60| 68.26| 29| 9-12/16| 736.60| 247.65| 49| 16-13/16| 1244.60| 427.04
10| 3-1/16| 254.00| 77.79| 30| 10-2/16| 762.00| 257.18| 50| 17-2/16| 1270.00| 434.98
11| 3-6/16| 279.40| 85.73| 31| 10-8/16| 787.40| 266.70| 51| 17-8/16| 1295.40| 444.50
12| 3-12/16| 304.80| 95.25| 32| 11| 812.80| 279.40| 52| 17-14/16| 1320.80| 454.03
13| 4-2/16| 330.20| 104.78| 33| 11-3/16| 838.20| 284.16| 53| 18-4/16| 1346.20| 463.55
14| 4-7/16| 355.60| 112.71| 34| 11-8/16| 863.60| 292.10| 54| 18-9/16| 1371.60| 471.49
15| 4-12/16| 381.00| 120.65| 35| 11-14/16| 889.00| 301.63| 55| 18-15/16| 1397.00| 481.01
16| 5-3/16| 406.40| 131.76| 36| 12-4/16| 914.40| 311.15| 56| 19-4/16| 1422.40| 488.95
17| 5-8/16| 431.80| 139.70| 37| 12-10/16| 939.80| 320.68| 57| 19-10/16| 1447.80| 498.48
18| 5-14/16| 457.20| 149.23| 38| 12-15/16| 965.20| 328.61| 58| 20| 1473.20| 508.00
19| 6-3/16| 482.60| 157.16| 39| 13-8/16| 990.60| 342.90| 59| 20-6/16| 1498.60| 517.53
20| 6-8/16| 508.00| 165.10| 40| 13-10/16| 1016.00| 346.08| 60| 20-11/16| 1524.00| 525.46
21| 6-14/16| 533.40| 174.63| 41| 14| 1041.40| 355.60| 61| 21| 1549.40| 533.40
22| 7-4/16| 558.80| 184.15| 42| 14-4/16| 1066.80| 361.95| 62| 21-7/16| 1574.80| 544.51
23| 7-10/16| 584.20| 193.68| 43| 14-11/16| 1092.20| 373.06| 63| 21-12/16| 1600.20| 552.45
24| 8| 609.60| 203.20| 44| 15-1/16| 1117.60| 382.59| 64| 22-2/16| 1625.60| 561.98
25| 8-5/16| 635.00| 211.14| 45| 15-7/16| 1143.00| 392.11|

Step 5. Mark the location determined in Step 4, on the flat outer flange of the fan inlet bell [1].
Step 6. Insert upper mounting rod [5] (attached to mounting foot [3] at inner roll pin) into the hole of the sensor mounting block [6] furthest from sensor housing [7].
Step 7. Insert lower mounting rod [9] (attached to mounting foot [3] at outer roll pin) into the hole of the sensor mounting block [6] closest to sensor housing [7].
Use the included hex wrench to tighten set screws in the probe only enough to hold the rods while marking.
Step 8. Using the mounting feet [3] as a template, mark and drill the four pilot holes on the fan inlet bell flange, so that the mounting feet [3] will be centered on the lines that were marked in Step 5.
Step 9. Confirm that the airflow directional arrow is pointing in the direction of airflow, and the cable is exiting downward.
Step 10. Position the probe on the fan inlet bell, and secure it with four mounting screws [4] in the pre-drilled holes.
Failure to properly install the probe can result in the probe and/or fan damage.
Step 11. If necessary, loosen set screws and position the sensor on the rods, so that it is on the centerline of the fan inlet bell.
S tep 12. Once centered, tighten the set screws using the hex wrench provided.
Step 13. Using the tie wraps [8] provided secure cable to mounting rod (minimum of two tie wraps [8] per probe).
Step 14. If installing two probes in the fan inlet, repeat Steps 5 to 13, otherwise, continue to Step 15.
Step 15. For dual fan inlet or fan array applications, repeat the steps above to install probes at the other fan inlet opening(s).
Step 16. Probe installation is complete! Figure “B” shows a completed two-probe installation.

Installation_-F_Forward_r1d
-F Probe Physical Installation (Forward Mounting)Page 2
EBTRON, Inc
1663 Hwy 701 S., Loris, SC 29569
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