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 |
| STA122 | (0-50 to 0-780 mm HGA) |
| STA140 | (0-5 to 0-500 PSIA) |
| STA922 | (0-50 to 0-780 mm HGA) |
| STA940 | (0-20 to 0-500 PSIA) |
| 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 |
| 1 | DC200 silicone (standard) |
| 2 | CTFE inert fill (use oxidizing applications) |
| Table 4 | Process connection |
| G | 1/2 “FNPT |
| Table 5 | Options |
| MB | CS bracket for 2” pipe stand or wall mounting |
| SB | 316 SS bracket for 2” pipe stand or wall mounting |
| FB | flat bracket for wall mounting only |
| UM | Hard copy of full user manual |
| F1 | calibration test report and certificate o conformance |
| DE | Honeywell DE protocol (formerly standard, must specify) |
| HC | HART compatible electronics |
| AN | analog output only, no communication |
| FF | Foundation Fieldbus communication |
| SM | local digital meter |
| ZS | zero and span adjustments |
| LP | transient voltage protection, lightning protection |
| CC | custom calibrated span and ID in transmitter memory |
| TC | transmitter span configured electronically |
| TG | stainless steel wired on tag |
| 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 |
