The Yokogawa Temperature Transmitter YTA320-FA2NN/KS25 is the highly accurate temperature transmitters that accept Thermocouple, RTD, ohms or DC milivolts inputs and converts it to a 4 to 20 mA DC signal for transmission.
The YTA320 is a single sensor input model, and the Yokogawa Temperature Transmitter YTA320-FA2NN/KS25 is a dual input model. Both models support either BRAIN or HART® communication protocol, and also supports FOUNDATION fieldbusTM.
The YTA320 in their standard configuration, with the exception of the Fieldbus type, are certified by TÜV as complying with SIL 2 for safety requirement.
Features
Yokogawa Temperature Transmitter YTA320-FA2NN/KS25
Outstanding performance
Microprocessor-based sensing technology ensures high accuracy and stability.
High reliability
Dual-compartment housing realizes high resistance capability to harsh environments.
SIL Certification
Yokogawa Temperature Transmitter YTA320-FA2NN/KS25 has been certified by TÜV NORD as being compliant with the requirements of the IEC61508 for SIL 2.
Variety of sensor inputs
The type of sensor input is user-selectable: thermocouples, RTDs, ohms, or DC milivolt.
Digital communication
The BRAIN and HART communication protocols are available.
The instrument configuration can be changed by the user with a BT200 terminal or HART communicator.
The Yokogawa Temperature Transmitter YTA320-FA2NN/KS25 also supports FOUNDATION fieldbus communication protocol.
Self-diagnostics function
Continuous self-diagnostics capability ensures long-term performance and lower cost of ownership.
LCD display with bargraph
The LCD display simultaneously displays a digital readout and a bargraph.
Specifications
Yokogawa Temperature Transmitter YTA320-FA2NN/KS25
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Accuracy (typical)
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YTA110: ±0.1% of span
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YTA310/320: ±0.05% of span
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Cold junction Compensation accuracy
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(For T/C only)
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±0.5 deg C (0.9 deg F)
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Power supply effect
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±0.005% of calibration span per volt
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Ambient temperature effect
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±0.1%/10 deg C (YTA110)
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Input signal
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YTA110/YTA310: single input, YTA320: dual input
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Input type is selectable: thermocouples, 2-, 3-, and 4-wire RTDs, ohm and DC milivolt
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Output
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Two wire 4 to 20 mA DC or FOUNDATION fieldbus signal (YTA320)
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Supply voltage
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BRAIN and HART: 10.5 to 42 V DC
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(10.5 to 30 V DC for Intrinsically safe type)
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Fieldbus: 9 to 32 V DC
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(9 to 24 V DC for Entity and 9 to 17.5 V DC for FISCO)
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Ambient temperature
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Option code may affect limits
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-40 to 85 deg C (-40 to 185 deg F)
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-30 to 80 deg C (-22 to 176 deg F) with integral indicator
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Mounting
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Optional mounting bracket can be used either for two-inch pipe or flat panel mounting.
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Weight
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1.2 kg (2.6lb) without integral indicator and mounting bracket. Integral indicator weighs 0.2kg (0.4lb).
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Degrees of protection
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IP66, IP67 and NEMA 4X
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Certificates
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CENELEC, CSA, FM, IECEx or TIIS
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SIL Certificate
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Certified by TÜV NORD in compliance with the IEC61508 SIL 2 capability for single transmitter use.
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Models and Suffix Codes
Yokogawa Temperature Transmitter YTA320-FA2NN/KS25
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Model
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Suffix Codes
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Descriptions
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YTA310 YTA320
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• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
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Temperature Transmitter with Single Sensor Input
Temperature Transmitter with Dual Sensor Input
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Output Signal
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-D • • • • • • • • • • • • • • • • • • • • -E • • • • • • • • • • • • • • • • • • • •
-F • • • • • • • • • • • • • • • • • • • •
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4 to 20mA DC with digital commnuication (BRAIN protocol)
4 to 20mA DC with digital communication (HART protocol)
Digital communication (FOUNDATION Fieldbus protocol)*1
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-------
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A • • • • • • • • • • • • • •
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Always A
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Electrical Connection
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0 • • • • • • • • • • • • • 2 • • • • • • • • • • • • •
3 • • • • • • • • • • • • •
4 • • • • • • • • • • • • •
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G1/2 female
1/2 NPT female
Pg 13.5 female
M20 female
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Integral Indicator
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D • • • • • • • •
N • • • • • • • •
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with digital indicator
None
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Mounting Bracket
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B • •
D • •
J • •
K • •
N • •
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SUS304 Stainless steel 2-inch horizontal pipe mounting *1
SUS304 Stainless steel 2-inch vertical pipe mounting *1
SUS316 Stainless steel 2-inch horizontal pipe mounting *1
SUS316 Stainless steel 2-inch vertical pipe mounting *1
None
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Optional Codes
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/◊ Optional Specifications
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*1: Applicable only for YTA320, refer to GS 01C50T02-00E for Fieldbus communication.
*2: For flat-panel mounting, please prepare bolts and nuts.