Yokogawa YTA 310 temperature transmitter
Product Introduction
The YTA310 is a high performance field-mount temperature transmitter that accepts a single sensor input. This input can be from a RTD, thermocouple, ohm, or DC millivolt. It converts the sensor input to a 4 to 20mA DC analog signal. The YTA110 supports either BRAIN or HART® 5 digital communication protocol. The YTA310 is the choice for control and safety applications.
Features
The YTA310 uses the IEC751 standard to define the relationship between resistance and temperature for RTD sensors. This relationship is referred to as aStandard 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 YTA310 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 YTA310 / Sensor system.
Accuracy
The YTA110 enables advanced linearization of 20 types of industrial temperature sensors and input signals. Utilizing a selected high grade 16bit A/D converter allows the YTA310 to achieve a performance of ±0.05% of calibrated span accuracy.
Stability
The YTA110's stability is inherited from its meticulous product design and development philosophy. Containing a precision internal reference, YTA310 can detect and automatically correct for any instability, delivery a 5 year stability guarantee
Specifications
Accuracy (typical) | YTA110: ±0.1% of span |
Cold junction Compensation accuracy | (For T/C only) |
Power supply effect | ±0.005% of calibration span per volt |
Ambient temperature effect | ±0.1%/10 deg C (YTA110) |
Input signal | YTA110/YTA310: single input, YTA320: dual input |
Output | Two wire 4 to 20 mA DC or FOUNDATION fieldbus signal (YTA320) |
Supply voltage | BRAIN and HART: 10.5 to 42 V DC |
Ambient temperature | Option code may affect limits |
Mounting | Optional mounting bracket can be used either for two-inch pipe or flat panel mounting. |
Weight | 1.2 kg (2.6lb) without integral indicator and mounting bracket. Integral indicator weighs 0.2kg (0.4lb). |
Degrees of protection | IP66, IP67 and NEMA 4X |
Certificates | CENELEC, CSA, FM, IECEx or TIIS |
SIL Certificate | Certified by TÜV NORD in compliance with the IEC61508 SIL 2 capability for single transmitter use. |
