In semiconductor applications, your pressure instrumentation needs to stand up to the conditions as well as meet high-purity standards and regulations. Ashcroft's line of fluoropolymer pressure transducers provides reliable pressure measurements for your semiconductor applications.
How do you know which of these transducers is the right one for your application?
This blog will compare Ashcroft’s ZL91, ZL92 and ZL95 pressure transducers and discuss their features and benefits to help you find the best solution for your needs.
ZL91 and ZL92 Pressure Transducers
The ZL91 and ZL92 transducers are specifically designed for applications that require all fluorine resin wetted parts and require low metal ion elusion in the process.
The Ashcroft ZL91 pressure transducer is designed for ultrapure and de-ionized water applications. It is constructed with fluoropolymer (PTFE/PFA) wetted parts that minimize metal ion elution. Its compact design helps to reduce contamination and maintain the purity of your process fluid.
The Ashcroft ZL92 pressure transducer is designed for use in semiconductor processes that require PTFE/PFA wetted parts for improved chemical compatibility with corrosive gases and fluids, including Hydrofluoric acid or other aggressive acids. A secondary isolation diaphragm and vent design isolates the ceramic sensing element from corrosive gases and liquids, which extends the lifespan of the transducer.
ZL95 Pressure Transducer
Ashcroft’s ZL95 fluoropolymer pressure transducer provides a 4-digit LED display and is specifically made for use in corrosive environments. The PTFE/PFA wetted parts provide extended cycle life and corrosion resistance.
The ZL95, which is essentially a ZL92 with a display, features an easy-to-read LED display along with NPN switch outputs. In addition, the ZL95 includes a pushbutton zero as a standard feature.
Similarities and Differences
Similarities between these transducers include fluoropolymer (PTFE/PFA) wetted materials for use in semiconductor applications and Class 100,000 cleanroom packaging and bagging. Each of the ZL models utilizes a capacitance sensor for excellent thermal stability. In addition, all units offer multiple mounting options that include tube connections, press fit nuts, flared nuts and threaded nuts.
Unlike the ZL91, the ZL92 and ZL95 both feature a special vent design to isolate the sensing element from corrosive liquids and gases in order to increase the lifespan of the transducer. The ZL91 and ZL92 offer a 4-20 mA or 1-5 Vdc output signal, while the ZL95 offers a number of analog output options including 4-20 mA, 0-5 Vdc, 0-10 Vdc and 1-5 Vdc. The other major difference between the three transducers is that the ZL95 provides an LED display.
We don’t like to pressure you, but we have more information.
Now that you know the differences and similarities between Ashcroft’s ZL91, ZL92 and ZL95 pressure transducers, you can research the solution that’s best for your application. Keeping all of these factors in mind can help you avoid problems and keep your process running with reliable and accurate pressure measurements.
If you want to learn more about pressure transducers, read some related blogs:
- Product Review: ZL91 and ZL92 Pressure Transducer for Semiconductor Applications
- Product Review: ZL95 Fluoropolymer Pressure Transducer with Display
- What Factors Make the Best Pressure Transducer for Semiconductor?
- How Much Do Pressure Transducers Cost? (6 Factors Impacting Price)
Feel free to contact us today to talk to one of our industry experts and get your questions answered.
