Smart Flange Mounted Liquid Level Transmitter
ST3000
Flange mounted level transmitters are essentially DP transmitters where a process mounting flange is used instead of the NPT process connection on a DP transmitter. These transmitters are used to measure fluid level in vented or pressurized tanks.
The mounting flange is connected to the High Pressure port, and the Low Pressure port is open to atmosphere, or connected to pressure line from the top of the tank. Smart transmitters have the benefit of adjustable measuring span or range within specified limits. These units can be re-ranged in the field or instrument shop with hand-held communication tools and/or pressure standards. To select the appropriate model, determine the pressure range of the media being measured, identify the temperature of the media being measured, understand the corrosive nature of the media, and consider the mounting of the unit for practical installation, calibration and maintenance of the unit.
Select a link under the "item" tab below to order.
| Table 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 |
| XXXXXX | X | X | X | XX | XX |
| Table 1 | Range |
| STA140 | (0-5 to 0-500 PSIA) |
| STA922 | (0-50 to 0-780 mm HGA) |
| STA940 | (0-20 to 0-500 PSIA) |
| STA122 | (0-50 to 0-780 mm HGA) |
| Table 2 | Partial list |
| A | carbon steel head, 316L diaphragm (air service only) |
| E | 316 SS head, 316L diaphragm |
| F | 316 SS head, Hastelloy C276 diaphragm |
| J | Hastelloy C276 head and diaphragm |
| Table 3 | Fill fluid |
| 2 | CTFE inert fill (use oxidizing applications) |
| 1 | DC200 silicone (standard) |
| Table 4 | Process connection |
| G | 1/2 “FNPT |
| Table 5 | Options |
| UM | Hard copy of full user manual |
| TG | stainless steel wired on tag |
| TC | transmitter span configured electronically |
| CC | custom calibrated span and ID in transmitter memory |
| LP | transient voltage protection, lightning protection |
| ZS | zero and span adjustments |
| SM | local digital meter |
| FF | Foundation Fieldbus communication |
| AN | analog output only, no communication |
| HC | HART compatible electronics |
| DE | Honeywell DE protocol (formerly standard, must specify) |
| F1 | calibration test report and certificate o conformance |
| FB | flat bracket for wall mounting only |
| SB | 316 SS bracket for 2” pipe stand or wall mounting |
| MB | CS bracket for 2” pipe stand or wall mounting |
| Table 6 | Approvals |
| 1C | FM Explosion Proof & Intrinsically Safe Class 1 Div 1 |
| 2J | CSA Explosion Proof & Intrinsically Safe Class 1 Div 1 |
| 3H | ATEX approvals, see spec sheet for details |
