SITRANS TF280 WirelessHART temperature transmitter

Input

Sensor

• Sensor type

Pt100 as per IEC 751/EN 60751¹⁾

• Connection

Two, three or four-wire system

• Measuring range

-200 ... +850 °C (-328 ... +1560 °F)

Cable length SITRANS TF280 and Pt100 sensor element

≤ 3 m

Measuring accuracy²⁾

Accuracy

< 0.4 % of the measured value

Long-term drift

< 0.035 % of the measuring range in first year

Temperature drift

Max. ±0.01 °C/10 K

Rated conditions

Ambient temperature

-40 ... +80 °C (-40 ... +176 °F)

Storage temperature

-40 ... +85 ° C (-40 ... +185 °F)

Relative humidity

< 95%

Climatic class

4K4H in accordance with EN 60721-3-4
(stationary use at locations not protected against weather)

Degree of protection

IP65/NEMA 4

Max. permissible temperature at transmitter for directly mounted Pt100

80 °C (176 °F)

Design

Enclosure

Die-cast aluminum

Shock resistance

According to EN 60068-2-29/03.95

Resistance to vibration

EN 60068-2-6/12.07

Weight

• without battery

1.5 kg (3.3 lb)

• With battery

1.6 kg (3.5 lb)

Dimensions (W x H x D)

See dimensional drawing

Thread for cable gland/sensor connection

M20x1.5
other threads via adapter

Material of the protective tube and process connection (only with pre-installed sensor tube)

Stainless steel 1.4404 (AISI 316L, UNS S 31603, X2CrNiMo17-12-2)

Cable between transmitter and sensor element

≤ 3 m for two-, three- or four-wire connections

Cable resistance < 10 О© (setting range in mО© 0 ... 9 999)

Sensor break

Is recognized

Displays and controls

Display (with illumination)

• Size of display

104 x 80 pixels

• Number of digits

Can be set

• Number of spaces after comma

Can be set

Setting options

• Locally with 3 buttons
• With SIMATIC PDM or HART Communicator

Auxiliary power

Battery

3.6 V DC

Communication

Wireless standard

WirelessHART V7.1 conforming

Transmission frequency band

2.4 GHz (ISM-Band)

Range under reference conditions

Up to 250 m (line of sight) in outside areas

Up to 50 m (greatly dependent on obstacles) in inside areas

Communication interfaces

• HART communication with HART modem
• WirelessHART

Certificates and approvals

Wireless communication approvals

R&TTE, FCC

General product safety

CSA_US/C, CE, UL

Pressure Equipment Directive

This device is not covered by the pressure equipment directive; classification as per the pressure equipment directive (DGRL 2014/68/EU), Directive 1/40; Section 1, Subsection 2.1.4.