Honeywell STR94G, STR93D manual Application Data

Page 11

34-ST-03-57 Page 11

Application Data

Liquid Level: Closed Tank Determine the minimum and maximum pressure differentials to be measured (Figure 17).

PMin = (SGp x a) - (SGf x d)

=LRV when HP at bottom of tank

=–URV when LP at bottom of tank

PMax = (SGp x b) - (SGf x d)

=URV when HP at bottom of tank

=–LRV when LP at bottom of tank

Where:

minimum level = 4mA

maximum level = 20 mA

a = distance between bottom tap and minimum level

b = distance between bottom tap and maximum level

d = distance between taps

SGf = Specific Gravity of capillary fill fluid (See Page 9 for values.)

SGp = Specific Gravity of process fluid

Max

Level

 

 

 

b

 

 

 

 

 

 

 

Min

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Level

 

 

 

 

 

 

 

 

 

 

a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

¥ Transmitter above datum

Max

Level

b

Min

Levela

¥ Transmitter at datum

Max

Level

b

LP

HP

LP

HP

LP

Min

Level

a

HP

¥ Transmitter below datum

24253

Figure 17—Closed tank liquid level measurement distances

Image 11
Contents Introduction Guide34-ST-03-57 Description of Diaphragm SealsStainless Steel Nipples are available Description FeaturesOperating Conditions All Models Silicone DC200 CtfeMbar ParameterDescription BarParameter Description Performance Under Rated Conditions General for all ModelsNon-Sparking, Zone Physical and Approval BodiesIntrinsically Safe, Zone 0/1 EEx ia IIC T4, T5, T6 97/23/EC 34-ST-03-57 Parameter DescriptionApplication Data Density, direct acting transmitter configuration Inches 34-ST-03-57 Reference DimensionsmillimetersSTR94G LGP/I Remote Seal with Vertical Pipe Mount Options Avail InstructionsKey Number DescriptionDIN DN80-PN40 ST-03-57 Table II SealsSpec. Figure Wetted Material Hastelloy C Monel Tantalum Ansi Class 150/300/600 GFA Table II Seals Bolt SelectionCommunication Options Transmitter Housing & Electronics OptionsServices/Certificates Options Warranty OptionsApproval Type Location or Classification Selection Body Table III OptionsRestriction Available Only With Not Available With Letter RestrictionsRestrictions 21a Flush Flanged Seal Dimensions and drawingsDimensions and drawings, Dimensions and drawings, Dimensions and drawings, Dimensions and drawings, HART* is a trademark of the Hart Communication Foundation

STR94G, STR93D specifications

The Honeywell STR93D and STR94G are advanced temperature controllers designed for precision temperature management in a variety of applications, from industrial processes to HVAC systems. These intelligent devices are engineered to enhance efficiency, reliability, and user flexibility, catering to both simple and complex control scenarios.

The STR93D is characterized by its dual-channel capability, making it ideal for processes requiring simultaneous temperature monitoring and control. Its robust design ensures stable performance even in demanding environments. The controller features a user-friendly interface that includes a large, backlit display, allowing operators to easily navigate through menus and settings. The intuitive design simplifies the setup process, reducing installation time and minimizing user error.

On the other hand, the STR94G takes automation a step further with its advanced features and connectivity options. This model is equipped with a comprehensive set of control algorithms, including PID, on-off, and fuzzy logic controls, ensuring precise temperature regulation. The STR94G also supports multiple input types, such as thermocouples and RTDs, providing versatility across various applications.

Both models incorporate Honeywell's proprietary Smart Control technology, which optimizes energy consumption and enhances operational efficiency. This technology not only ensures accurate temperature management but also contributes to reduced operational costs by minimizing energy waste. Additionally, the controllers support communication protocols such as Modbus and BACnet, facilitating easy integration into existing systems and enabling remote monitoring capabilities.

Both controllers are built with durability in mind, featuring a rugged housing that protects against environmental factors, including dust and moisture. This makes them suitable for use in harsh industrial settings as well as in less demanding environments. Their adaptability and advanced technology provide users with solutions that not only meet but exceed industry standards.

In summary, the Honeywell STR93D and STR94G are exemplary temperature controllers that stand out in their field. They combine advanced control features, robust design, and exceptional connectivity, making them suitable for a wide range of applications. Whether for industrial use or commercial HVAC installations, these controllers deliver reliability and efficiency, setting a benchmark in temperature control solutions.