The YTA610 is the highly accurate temperature transmitter that accepts Thermocouple, RTD, ohms or DC millivolts inputs and converts it to a 4 to 20 mA DC or Fieldbus signal for transmission. The YTA610 supports HART and FOUNDATION Fieldbus communication protocols. HART type is certifi ed as complying with SIL 2 for safety requirement
Dual-compartment housing realizes high resistance
capability to harsh environments.
Variety of sensor inputs
The type of sensor input is user-selectable from
thermocouples (T/C), RTDs, ohms, or DC millivolts.
HART protocol revision is 7 and FOUNDATION Fieldbus.
The instrument confi guration can be changed by the
user with using the Fieldmate or Handheld terminal.
Local Parameter Setting
Parameter confi guration by the push button offers
easy and quick setup for parameters.
Continuous self-diagnostics capability ensures
longterm performance and lower cost of ownership.
Dual universal inputs
Dual input can accept two thermocouple, RTD,
ohm or DC millivolt 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.
■ PERFORMANCE SPECIFICATIONS
HART communication type:
A/D accuracy/span + D/A accuracy
(See Table 1 on page 4.)
Fieldbus communication type:
A/D accuracy (See Table 1 on page 4.)
Cold Junction Compensation Accuracy
± 0.5°C (± 0.9 °F) for T/C only
Ambient Temperature Effect (per 10°C change)
See Table 2 on page 5.
Stability (at 23±2°C)
RTD: ±0.1% of reading or ±0.1°C per 2 years,
whichever is greater.
T/C: ±0.1% of reading or ±0.1°C per year, whichever
5 Year Stability (at 23±2°C)
RTD: ±0.25% of reading or ±0.25°C, whichever is
T/C: ±0.5% of reading or ±0.5°C, whichever is
The YTA610 is tested to the following specifi cations
with no effect on performance per IEC 60770-1
10 to 60 Hz : 0.21 mm peak displacement
60 to 2000 Hz : 3G
Power Supply Effect (HART type)
±0.005% of calibrated span per volt
■ FUNCTIONAL SPECIFICATIONS
Input number: single and dual input
Input type is selectable: Thermocouples, 2-, 3-, and
4-wire RTDs, ohms and DC millivolts.
See Table 1. on page 4.
Input Signal Source Resistance (for T/C, mV)
1 kΩ or lower
Input Lead Wire Resistance (for RTD, ohm)
10 Ω per wire or lower
Span & Range Limits
See Table 1. on page 4.
Two wire 4 to 20 mA DC type
Output range: 3.68 to 20.8 mA DC
HART protocol is superimposed on the 4 to 20 mA
Output signal based on FOUNDATION Fieldbus
Input/Output/GND isolated to 500V DC
Except lightning protector option.
Manual Test Output Function
The output value can be set manually.
Sensor Burnout (HART type)
High (21.6 mA DC) or Low (3.6 mA DC), user
Output in Transmitter Failure (HART type)
Down-scale: –5%, 3.2 mA DC or less (Optional code
C1 or C2)
Up-scale: 110%, 21.6 mA DC or more (Standard or
Optional code C3)
Update Time (HART type)
Approximately 0.5 seconds for a single sensor (0.8
second for dual sensors)
Turn-on Time (HART type)
Approximately 6 seconds for a single sensor (7
seconds for dual sensors)
Damping Time Constant
Selectable from 0 to 100 seconds
Self-diagnostic function based on the NAMUR NE107
standard detects failures.
Hardware failure: Detect in CPU, ADC, Memory, etc.
Sensor failure: Detect the disconnection of sensor.
Sensor line information: Measure the line resistance.
Sensor drift: Detect the difference between sensor1
Fieldbus Functions (Fieldbus type)
Functional specifications for Fieldbus communication
conform to the standard specifications (H1) of