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Yokogawa Model YTA110 Temperature Transmitter
The YTA110 is the high performance temperature transmitter that accepts Thermocouple, RTD, ohms or DC milivolts inputs and converts it to a 4 to 20 mA DC signal for transmission. The YTA110 supports either BRAIN or HART communication protocol. The YTA110 in it standard configuration is certified by
TU¨ V as complying with SIL2 for safety requirement.
■ FEATURES
High performance
Microprocesser-based sensing technology ensures long-term accuracy and high reliability.
High reliability
Dual-compartment housing realizes high resistance capability to harsh environments, and YTA110 has SIL2 capability for safety requirement.
Variety of sensor inputs
The type of sensor input is user-selectable from thermocouples (T/C), RTDs, ohms, or DC milivolts.
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.
Self-diagnostics function
Continuous self-diagnostics capability ensures longterm performance and lower cost of ownership.
LCD display with bargraph
The LCD display provides both a digital readout and percent bargraph simultaneously.
■ STANDARD SPECIFICATIONS
PERFORMANCE SPECIFICATIONS
Accuracy
(A/D accuracy/span + D/A accuracy) or 0.1 % of calibrated span, whichever is greater.
See Table 1. on page 3.
Cold Junction Compensation Accuracy
(For T/C only)
± 0.5°C (± 0.9 °F)
Ambient Temperature Effect (per 10 °C change)
± 0.1 % or ± (Temperature Coefficient /span),whichever is greater. See Table 2. for Temperature
Coefficient.
Stability
RTD:
0.1% of reading or 0.1°C per 2 years,whichever is greater at 232°C.
T/C:
0.1% of reading or 0.1°C per year,whichever is greater at 232°C.
5 Year Stability
RTD:
0.2% of reading or 0.2°C,whichever is greater at 232°C.
T/sC:
0.4% of reading or 0.4°C,whichever is greater at 232°C.
RFI Effect
Tested per EN 50082-2, field intensity up to 10 V/m.
Power Supply Effect
±0.005 % of calibration span per volt
Vibration Effect
10 to 60 Hz 0.21 mm peak displacement
60 to 2000 Hz 3G
Position Effect
None
FUNCTIONAL SPECIFICATIONS
Input
Input type is selectable: Thermocouples, 2-, 3-, and 4-wire RTDs, ohms and DC milivolts. See Table 1.on page 3.
Span & Range Limits
See Table 1. on page 3.
Input signal source resistance (for T/C, mV)
1 k or lower
Input lead wire resistance (for RTD, ohm)
10 per wire or lower
Output
Two wire 4 to 20 mA DC. Output range: 3.68 mA to 20.8 mA
BRAIN or HART ® protocol is superimposed on the 4 to 20 mA signal.
Any single value from the followings can be selected as the analog output signal.
Sensor 1, Terminal Temperature.
Also, up to three of the above values can be displayed on LCD display or read via communication.
Isolation
Input/Output/GND isolated to 500 V DC
Sensor Burnout
High (21.6 mA DC) or Low (3.6 mA DC),userselectable.
Output in Transmitter Failure
Up-scale: 110%, 21.6 mA DC or more (Standard or Optional code /C3)
Down-scale: –5%, 3.2 mA DC or less (Optional code /C1 or /C2)
Update Time
Approximately 0.5 seconds
Turn-on Time
Approximately 5 seconds
Damping Time Constant
Selectable from 0 to 99 seconds
Ambient Temperature Limits
Option code may affect limits.
-40 to 85 °C (-40 to 185 °F)
-30 to 80 °C (-22 to 176 °F) with Integral Indicator
Ambient Humidity Limits
5 to 100 % RH at 40 °C (104 °F)
EMC Conformity Standards ,
EN61326-1 Class A, Table2 (For use in industrial locations)
EN61326-2-3
SIL Certification
YTA110 temperature transmitter is certified by TU¨ V NORD CERT GmbH in compliance with the following standards;
IEC 61508: 2000; Part1 to Part 7 Functional Safety of Electrical/electronic/programmable electronic related systems;
SIL 2 capability for single transmitter use, SIL 3 capability for dual transmitter use.
Self-calibration
The analog-to-digital measurement circuitry automatically self-calibrates for temperature update by
comparing the dynamic measurement to extremely stable and accurate internal reference elements.
Self-diagnostics
Loss of input error, ambient temperature error,EEPROM error, and CPU error. Up to four error
history can be stored in the memory.
Manual Output Function
The output value can be set manually.
Supply & Load Requirements
Supply Voltage
10.5 to 42 V DC for general use and flameproof type
10.5 to 32 CV DC for lightning protector (Optional code /A)
10.5 to 30 V DC for intrinsically safe, Type n,nonincendive, or non-sparking type
Minimum voltage limited at 16.4 V DC for digital communications, BRAIN and HART® protocols
Load
0 to 1335 for operation
250 to 600 for digital communication
See Figure 1. on page 4.
Communication Requirements
BRAIN:
Communication Distance
Up to 2 km (1.25 miles) when using CEV polyethylene-insulated PVC-sheathed cables. Communication distance varies depending on type of cable used.
Load Capacitance
0.22 F or less
Load Inductance
3.3 mH or less
Input Impedance of communicating device
10 k or more at 2.4 kHz.
PHYSICAL SPECIFICATIONS
Enclosure
Material
Low copper cast-aluminum alloy
Coating
Polyurethan resin baked finish
Color: Deep-sea moss green (Munsell 0.6GY3.1/2.0)
Degrees of Protection
IP67, NEMA4X, JIS C0920 immersion proof
Data and tag plate
SUS304 Stainless steel
Mounting
Optional mounting brackets can be used either for two-inch pipe or flat panel mounting.
Terminal Screws
M4 screws
Integral Indicator
Optional LCD digital indicator includes 5-digit numerical dispaly with °C, K, °F,°R, % and mV, 0 to 100 % bargraph and dot-matrix display.
Weight
1.2 kg(2.6 lb) without Integral indicator and Mounting
bracket. Integral indicator weights 0.2 kg(0.4 lb).

YTA50

YTA50-A

YT50-A/KS2

YTA70-E

YTA70-E/KS2

YTA110-EA4DN/KU2

YTA110-EA2DN/KU2/C3

YTA110-EA4DD/KU2/C3

YTA110-EA4NB/X1/KU2

YTA110-EA4DB/D2/KU2

YTA110-EA2DB/KU2

YTA110-EA4DD/KU2/X1/A/D2

YTA110-EA4DN/KU2

YTA110-EA2DB

YTA110-DA0DB/A

YTA110-DA2DB/KU2/X1

YTA110-EA4DB/X1/A

YTA110-EA2DD/FF1/D2

YTA110-DA2DB

YTA110-EA2NN/KU2

YTA110-EA4DN

YTA110-EA2DB/KU2/A

YTA110-EA2DD/X1/KU2/CA

YTA110-EA2DD/KU2/C3

YTA110-EA2DN/KU2/C3

YTA110-EA2DB/KU2/C3

YTA110-EA2DB/A/KU2

YTA110-EA2DN/KU2

YTA110-EA2DB/KU2

YTA110-EA4DD/KU2/C3

YTA110-EA4NB/X1/KU2

YTA310-EA0DN

YTA310-FA2NN/KS25

YTA320-EA2DBA/SU2

YTA320A-EA2DB/A/KU2

YTA320-FA4NN/KU2

YTA320-FA4NN/KS25

YTA320-FA4DD/KS25/X1

YTA320-FA2DN/KS25

YTA320-FA2DN/KS25

YTA320-FA4DD/KS25/X1

YTA320-FA4NB/X1/KS25

YTA320-FA4NN/X1/KS25

YTA320-EA4ND/A/X1

YTA320-EA4DB/D2/KU2

YTA320-EA4DB/D2/KU2

YTA320-EA4ND/A/X1

YTA320-FA4NN/KS25

YTA320-EA4DB/A/X1/CM1

YTA320-FA4NB/X1/KS25

YTA320-FA4NN/X1/KS25

YTA320-FA4DN/KF2/X1

YTA320-FA2DN/KS25

YTA320-FA2DD/KS25

YTA320-EA4DJ/KU2

YTA320-FA4DJ/KS25/LC2

YTA320-EA4DJ/KU2