Home > Transmitters > Honeywell > ST3000 900 Series > Honeywell STD974 Differential Pressure Transmitter
Honeywell STD974 Differential Pressure Transmitter

Differential Pressure Transmitter

Differential Pressure Transmitter Honeywell STD974 series of intelligent differential pressure transmitter is based on the microprocessor-based intelligent transmitter. The latest R300 version, to enhance the accuracy of the transmitter, reliability and long-term stability indicators. It can measure a variety of liquid and gas differential pressure, pressure or level, and output the corresponding 4 ~ 20mA analog and digital signals. Its unique temperature and static pressure error automatic correction function to make it meet the harsh environment. It has DE communication protocol, with Honeywell’s ExperionPKS distributed control system and intelligent field communicator (SFC) to achieve two-way digital communication, eliminating the analog signal transmission error, to facilitate the transmitter debugging, verification and fault diagnosis The

STD924 features

1. Advanced sensor technology:

Using the ion implantation silicon technology, the static pressure sensor and the temperature sensor, at any time to correct the process temperature and static pressure caused by the error, improve the measurement accuracy and stability.

2. High reliability: Mean time between failures 470 years.

3. High stability: ± 0.01% / year.

4. High precision: ± 0.065%.

5. High static pressure:

Ordinary type is 31.5MPa, up to 42MPa.

6 Wide measuring range:

STD9240 ~ 100kPa

STD9300 ~ 700kPa

STD9740 ~ 21MPa

7. Complete specifications:

The liquid part has a variety of anti-corrosion materials, to meet the conditions of the use of a variety of conditions, special needs

8. With a variety of intrinsically safe and flameproof certification.

9. Optional HART protocol.

10. Optional fieldbus (FF) communication protocol.

11. Use the field communicator or MCT multi-protocol communicator to achieve the ST3000 transmitter configuration, checksum fault diagnosis.

12. Configurable with SCT configuration tool via a portable computer.

13. Digital integration with Honeywell ExperionPKSTM distributed control system.

14. Small size, light weight: 4.1Kg.


Isolated diaphragm material
STD924: 316L SS, Hastelloy C-276, Monel alloy, tantalum
STD930: 316L SS, Hastelloy C-276, Monel alloy, tantalum
STD974: 316L SS, Hastelloy C-276

Process interface material
STD924: 316 SS, carbon steel (galvanized), Monel alloy, Hastelloy
STD930: 316 SS, carbon steel (galvanized), Monel alloy, Hastelloy
STD974: 316 SS, carbon steel (galvanized), Monel alloy

O-type gasket: standard for Teflon (polytetrafluoroethylene), fluorinated rubber
Body bolts: carbon steel (galvanized), or 3166 SS nut 304SS bolts; or NACE A286SS bolts, 304SS nut or B7M bolt nut
Mounting bracket: carbon steel (galvanized) or stainless steel angle bracket, or carbon steel plate bracket
Filling liquid: silicone oil DC200 or CTFE (fluorine oil)
Case: epoxy polyester paint, low copper and aluminum alloy. Meet NEMA AX (waterproof) and NEMA 7 (explosion proof) requirements. Optional stainless steel
Process connection: 1/4 inch NPT; 1/2 inch NPT adapter, DIN wiring 16AWG (1.5mm diameter)
Installation: Use a standard mounting bracket that can be installed in any position. The bracket is mounted on a 2 inch (50 mm) vertical or horizontal pipe
Stability: 0.03% of full scale / year
Output (two lines): 4 ~ 20mA, or DE digital communication. Optional FF field bus and HART protocol