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

High       reliability

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.

Digital    communication

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.

Self-diagnostics    function

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.

STANDARD SPECIFICATIONS

■ PERFORMANCE SPECIFICATIONS 

Accuracy
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
is greater.
5 Year Stability (at 23±2°C)
RTD: ±0.25% of reading or ±0.25°C, whichever is
greater.
T/C: ±0.5% of reading or ±0.5°C, whichever is
greater.
Vibration Effect
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 Signals

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.

Output Signals

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

signal.

Fieldbus type

Output signal based on FOUNDATION Fieldbus

communication protocol.

Isolation

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

selectable.

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-Diagnostics

Self-diagnostic function based on the NAMUR NE107

standard detects failures.

Hardware-Diagnostics

Hardware failure: Detect in CPU, ADC, Memory, etc.

Sensor-Diagnostics

Sensor failure: Detect the disconnection of sensor.

Sensor line information: Measure the line resistance.

Sensor drift: Detect the difference between sensor1

and sensor2.

Fieldbus Functions (Fieldbus type)

Functional specifications for Fieldbus communication

conform to the standard specifications (H1) of

FOUNDATION Fieldbus.