Product Name: Model ATT61/71 (Integral Sensor type)
Product Description
OVERVIEW: -
The models ATT61/71 Smart Transmitter are temperature transmitters for th e model ATT90 integral temperature sensor and models ATT9 protecting wells for the temperature
sensor. It converts and transmits the input signal from a thermocouple or resistance thermometer into a
4~20mA DC or a digital signal. The SFC (Smart Field Communicator) facilitates remote
setting of various parameters, calibration or self-diagnostics. The models ATT61/71 Transmitter, consisting of a sensor and a transmitter have been certified to conform with the
JIS Flameproof structure standard. For this reason, use of Yamatake's Model ATT sensor are highly recommended.
FEATURES: -
1. Vastly improves maintenance efficiency. The SFC facilitates setting, calibration and self-diagnostics of the transmitter from the control room
2. Reduces transmitter inventory Single model accepts wide range of sensor types.
3. Reduces installation costs. Two-wire system eliminates the need for compensating lead wire or three-core shield cable from site to control room.
4. Self-diagnostic functions facilitates simple operation: Abnormal ambient temperature:
If deviates from the range of -40 ~ +85°C (Current ambient temperature can be monitored)
Abnormal cold junction: If platinum temperature sensor for cold junction becomes abnormal
Abnormal input: If temperature sensor output shows irregularity Open thermocouple wire:
If thermocouple wire becomes open
5. An optimal range for process operation can be selected The maximum/minimum holding function allows read out if the range is exceeded.
6. Useful integral indicator
Integral digital indicato r provides both field indication and signal transmission.
7. Explosion-proof model can be used in an acetylene or a
hydrogen atmosphere
The transmitter has been certified for JIS Flameproof,
Exd IIC T6.
STANDARD SPECIFICATIONS: -
Converter:
Input type (Select by SFC)
Thermocouple
SJ(J), SK(K), ST(T) SE(E) SN(N), SR(R), SS(S),
SB(B)
Resistance temperature detector (RTD)
Pt100, Jpt100
mV
Measurable range:
All temperature ranges listed in official JIS
-20~120mV
Burn-out:
Up-scale (over 21.1mA DC) or down-scale (under 3.6mA DC)
Cold joint compensation:
External/internal selectable from an SFC
Cold joint compensation accuracy:
±0.5 °C
Conversion accuracy:
Depends on the sensor type and measurement span. (For details refer to Table 2.)
Output:
Analog (4~20mA DC), or digital (DE protocol) selectable by SFC
Digital indication:
An optional LCD display is in 4.5-digit with an engineering unit (degree C) including 0-100% bar graph.
Power supply/load resistance:
17.5~42V DC/2 50~1271
Ambient temperature range:
Waterproof model:
Without LCD display: -40~85 °C
With LCD display: -20~70°C
JIS Flameproof model:
-20~60°C regardless of LCD display
Ambient humidity:
5~100% RH (No condensation)
Additional features:
Influence of ambient temperature
±0.5% F.S. (30°C)
Influence of ambient humidity
±0.01%F.S. (5~100% RH)
