4.1 Mounting ST 3000 Transmitter, Continued
Remote seal mounting
ATTENTION
Use the procedure in Table 10 to mount a remote diaphragm seal transmitter model. Figure 10 shows a typical installation for a remote diaphragm seal transmitter for reference.
Mount the transmitter flanges within the limits stated here for the given
IF the fill fluid is… | THEN mount the flange… |
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Silicone DC 200 Oil | no greater than 22 feet (6.7 meters) |
| below the transmitter |
Silicone DC 704 Oil | no greater than 19 feet (5.8 meters) |
| below the transmitter |
Chlorotrifluorethylene | no greater than 11 feet (3.4 meters) |
| below the transmitter. |
NOTE: The combination of tank vacuum and high pressure capillary
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| head effect should not exceed 9 psi (300 mm Hg) absolute. | |||||||
Table 10 |
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| Mounting Remote Diaphragm Seal Transmitter | |||||||
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| 1 | Mount transmitter at a remote distance determined by length of |
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| 2 |
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| If Transmitter Model |
| Then Connect Remote |
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| Number is… |
| Seal on… |
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| STR93D or STR12D |
| high pressure (HP) side of |
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| transmitter to lower flange |
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| mounting on tank wall for |
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| variable head H1. |
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| STR13D |
| low pressure (LP) side of |
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| transmitter to lower flange |
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| mounting on tank wall for |
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| variable head H1. |
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| ATTENTION | On insulated tanks, remove enough insulation to |
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| accommodate the flange extension. |
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| Continued on next page | ||
32 | ST 3000 Release 300 Installation Guide | 2/05 |