Temperature transmitter

Hand Held Temperature Measure Transmitter dual input High Precision 

Quick Detail:

Building on the YTA310, the YTA320 adds dual inputs and dual input functions to enhance your process information. Dual input functions include Failed Sensor Backup, Temperature Averaging, and Differential Temperature. The YTA320 also adds the availability of FOUNDATION™ Fieldbus all digital communication. The YTA320 is the choice for control and safety applications.

Key YTA320 features include:

§                                 Dual Inputs

§                                 Choice of BRAIN Protocol, HART® 5 Protocol, or FOUNDATION™ Fieldbus

§                                 TUV NORD SIL 2/3 Certification (BRAIN and HART Protocols)

Description:

Rugged Construction

Robust dual compartment housing with hermetically sealed terminals protects the electronics from moisture ingress and eliminates the need to expose the electronics to the environment. This ensures a long service life and long stability, while reducing maintenance and cost of ownership. Reliability and durability are guaranteed with NEMA 4x and IP67 compliance.

The durable epoxy paint maximizes chemical resistance; however, for maximum protection in marine environments where salt spray and semi immersion are common, a stainless steel housing is available.

Accuracy

The YTA320 enables advanced linearization of 20 types of industrial temperature sensors and input signals. Utilizing a selected high grade 16bit A/D converter allows the YTA320 to achieve a performance of ±0.05% of calibrated span accuracy wth BRAIN or HART 5 communication. With FOUNDATION™ Fieldbus, the calibrated span accuracy is ±0.009 of calibrated span.

Stability

The YTA320's stability is inherited from its meticulous product design and development philosophy. Containing a precision internal reference, YTA320 can detect and automatically correct for any instability, delivery a 5 year stability guarantee.

Communications

The YTA320 has 4 to 20 mA analog output signal with Brain Protocol or HART® 5 digital protocol rider. It also has the option of the all digital FOUNDATION™ Fieldbus protocol.

Dual Sensor Input

The YTA320 in capable of dual sensor input. With the processing capablilty of the tarnsmitter, this dual input can be used to provide Failed Sensor Backup, Temperature Averaging, or Differential Temperature measurement.

The YTA320 has an automatic failed sensor backup function that transfers seamlessly to the standby sensor when needed. When the primary sensor fails, the transmitter will automatically switch over to the standby secondary sensor. An error message is displayed on the local indicator and an alarm message is generated for the host system and asset manager. The failed sensor can then be replaced without losing vital process information. This allows the sensor to be replaced at the next convenient maintenance period, avoiding unnecessary trips to the field and a possible unscheduled plant shutdown.

Sensor Matching

The Yokogawa YTA320 uses the IEC751 standard to define the relationship between resistance and temperature for RTD sensors. This relationship is referred to as a Standard Curve. Sensor manufacturers use this same standard, but, because of construction process, each sensor has a unique temperature / resistance relationship. This is referred to as the Real RTD Curve. (The Real RTD Curve falls within the tolerance band of IEC751 standard) In the 1920's, Hugh Longbourne Callendar and M.S. Van Dusen developed a set of coefficients that would modify the Standard Curve to match the Real RTD Curve; thus, removing the error generated by the difference between the two curves. Yokogawa's YTA320 with the CM1 option can accept these coefficients to adjust the Standard Curve to match the Real RTD Curve of the sensor; eliminating this error improves the accuracy of the YTA320 / Sensor system.

Applications:

Electrolyzer Solution: Instruments and Solution for Ion-Membrane Electrolyzer Plant Application

Caustic soda and hydrochloric acid, produced in electrolyzer plants, are fundamental materials used in varieties of industries; chemicals, pharmaceuticals, petrol-chemicals, pulp and papers, etc. Profit is the result of the effective production with minimized running / maintenance cost. Proper control of the process brings you stabilized quality of products with the vast operational profit.

Measurement in Cogeneration and Captive Power Boiler

Steam is still one of the most popular methods of providing an energy source to a process and its associated operations. The more accurate and reliable measurements that are made, the more informed decisions can be taken that affect costs and product quality.

Industries: Oil & Gas Upstream, Refining, Bulk& Petrochemical, Specialty Chemical, Power, Pulp and Paper, Iron and Steel

Pulp & Paper: Instruments and Solution for Pulp & Paper Industry

Continuous technology improvement is ongoing in the pulp & paper industry to obtain the best possible performance. The improved plant performance translates to the higher quality improvement and lower cost, and simultaneously environmental friendly plant operation.

Industry: Pulp and Paper

Specifications:

Competitive Advantage:

1. Outstanding performance

Microprocesser-based sensing technology ensures high accuracy and reliability.
 2.High reliability
Dual-compartment housing realizes high resistance capability to harsh environments, and YTA110 has SIL2 capability for safety requirement. 
3.Variety of sensor inputs

The type of sensor input is user-selectable from thermocouples (T/C), RTDs, ohms, or DC milivolts.  

4.Digital communication
 BRAIN or HART® communication protocol is available. The insturment configuration can be changed by the user with using the BT200 or HART communicator

5.Self-diagnostics function
Continuous self-diagnostics capability ensures longterm performance and lower cost of ownership.

6.LCD display with bargraph
The LCD display provides both a digital readout and percent bargraph simultaneously. 

7. Dual universal inputs (Model YTA320)
The YTA320 can accept two thermocouple, RTD, ohm or DC milivolt inputs.  Differential or average temperature measurement is selectable. The sensor backup function for automatically switches-over from the primary to the backup upon sensor failure.