Technical data iTEMP TMT82
44 Endress+Hauser
12 Technical data
For secure HART
®
communication in accordance with functional safety as defined in
IEC 61508 (SIL mode), measured values are sent securely from the transmitter via the
HART
®
protocol to a connected control system where they are processed further in a
secure manner. Secure HART
®
communication works using special HART
®
commands
that are only available in the SIL mode.
The secure HART
®
protocol includes technologies that are licensed by Rockwell
Automation.
For more information please refer to the Functional Safety Manual SD01172T/09
12.1 Input
Measured variable Temperature (temperature-linear transmission behavior), resistance and voltage.
Measuring range It is possible to connect two sensors that are independent of one another
1)
. The measuring
inputs are not galvanically isolated from each other.
Resistance thermometer
(RTD) as per standard
Description α Measuring range limits Min. span
IEC 60751:2008
Pt100 (1)
Pt200 (2)
Pt500 (3)
Pt1000 (4)
0.003851
–200 to +850 °C (–328 to +1 562 °F)
–200 to +850 °C (–328 to +1 562 °F)
–200 to +500 °C (–328 to +932 °F)
–200 to +250 °C (–328 to +482 °F)
10 K
(18 °F)
JIS C1604:1984 Pt100 (5) 0.003916 –200 to +510 °C (–328 to +950 °F)
10 K
(18 °F)
DIN 43760 IPTS-68
Ni100 (6)
Ni120 (7)
0.006180
–60 to +250 °C (–76 to +482 °F)
–60 to +250 °C (–76 to +482 °F)
10 K
(18 °F)
GOST 6651-94
Pt50 (8)
Pt100 (9)
0.003910
–185 to +1 100 °C (–301 to +2 012 °F)
–200 to +850 °C (–328 to +1 562 °F)
10 K
(18 °F)
OIML R84: 2003,
GOST 6651-2009
Cu50 (10)
Cu100 (11)
0.004280
–180 to +200 °C (–292 to +392 °F)
–180 to +200 °C (–292 to +392 °F)
10 K
(18 °F)
Ni100 (12)
Ni120 (13)
0.006170
–60 to +180 °C (–76 to +356 °F)
–60 to +180 °C (–76 to +356 °F)
10 K
(18 °F)
OIML R84: 2003, GOST
6651-94
Cu50 (14) 0.004260 –50 to +200 °C (–58 to +392 °F)
10 K
(18 °F)
- Pt100 (Callendar van Dusen)
Nickel polynomial
Copper polynomial
- The measuring range limits are specified by entering the
limit values that depend on the coefficients A to C and
R0.
10 K
(18 °F)
• Type of connection: 2-wire, 3-wire or 4-wire connection, sensor current: ≤0.3 mA
• With 2-wire circuit, compensation of wire resistance possible (0 to 30 Ω )
• With 3-wire and 4-wire connection, sensor wire resistance up to max. 50 Ω per wire
Resistance transmitter Resistance Ω 10 to 400 Ω
10 to 2 000 Ω
10 Ω
10 Ω
1) In the case of 2-channel measurement the same measuring unit must be configured for the two channels (e.g. both °C or F or K). Independent 2-
channel measurement of a resistance transmitter (Ohm) and voltage transmitter (mV) is not possible.
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