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Alternative article: TAD991 + E33403 – Product comparison: TAD961 / TAD991
Note any deviating technical data for the selection of the alternative article and the accessories.
discontinued article


Temperature transmitter with drift detection


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Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Measuring range
-25...160 °C -13...320 °F
Process connection Aseptoflex
Installation length EL [mm] 40
Special feature Gold-plated contacts
Measuring element 1 x Pt 1000 + 1 x NTC; (thermically coupled, with backup function (temperature measuring even if one element fails))
Media liquids and gases
Pressure rating [bar] 50
Minimum installation depth [mm] 15
No dead space yes
Electrical data
Operating voltage [V] 20...32 DC; (according to EN 50178 SELV/PELV)
Current consumption [mA] 23; (24 V)
Protection class III
Reverse polarity protection yes
Power-on delay time [s] 4
Integrated watchdog yes
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Total number of outputs 2
Output signal switching signal; analogue signal; (configurable)
Electrical design PNP/NPN
Number of digital outputs 1
Output function normally open / normally closed / diagnostic signal; (parameterisable)
Max. voltage drop switching output DC [V] 2
Permanent current rating of switching output DC [mA] 250
Diagnostic output diagnostic output for drift and fault monitoring
Number of analogue outputs 1
Analogue current output [mA] 4...20
Max. load [Ω] (Ub - 10 V) x 50
Short-circuit protection yes
Type of short-circuit protection pulsed
Overload protection yes
Measuring/setting range
Probe length L [mm] 40
Measuring range
-25...160 °C -13...320 °F
Drift warning
0.2...5 °C 0.4...9 °F
Drift alarm
0.2...5 °C 0.4...9 °F
In steps of
0.05 °C 0.1 °F
Resolution of analogue output [K] 0.05
Accuracy / deviations
Precision analogue output [K] ± 0,2 (-10...100°C); ± 0,3 (-25...-10/100...150°C); (probe completely inserted into the measured medium up to the sealing chamfer)
Drift monitoring [K] ± 0,2 (-10...100°C); ± 0,3 (-25...-10/100...150°C) *); (probe completely inserted into the measured medium up to the sealing chamfer)
Temperature coefficient [% of the span / 10 K] < ± 0,01; (in case of deviation from the reference condition 25 ± 5 °C)
Response times
Dynamic response T05 / T09 [s] 6 / 13
Software / programming
Parameter setting options drift warning/drift alarm threshold; Fail-Safe; Display unit; scaling of the analogue output; redundancy switching; performance diagnostic output; switching logic; normally open / normally closed; programmable via EPS interface
Operating conditions
Ambient temperature [°C] -25...70
Note on ambient temperature
electronics: -25...70 °C
Process connection: -32...170 °C
Storage temperature [°C] -40...85
Protection IP 67; IP 69K
Tests / approvals
DIN EN 61000-4-2 ESD 4 kV CD / 8 kV AD
EN 61000-4-3 HF radiated 10 V/m
DIN EN 61000-4-4 Burst 2 kV
EN 61000-4-6 HF conducted 10 V
Shock resistance
DIN IEC 68-2-27 50 g (11 ms)
Vibration resistance
DIN EN 60068-2-6 20 g (10...2000 Hz)
MTTF [years] 220
Note on approval
Including free 5-point calibration certificate.
Mechanical data
Weight [g] 0.456
Materials stainless steel (1.4404 / 316L); PEI; FKM
Materials (wetted parts) stainless steel (1.4404 / 316L)
Process connection Aseptoflex
Surface characteristics Ra/Rz of the wetted parts Ra: < 0.6
Installation length EL [mm] 40
referring to UL: for use on a low voltage circuit with overcurrent protection
in accordance with UL873 tab. 28.1 or Imax = 100/Ub (Ub = voltage of the circuit)
The 3-A qualification is only valid if adapters with 3-A qualification are used for installation.
Notes discontinued article
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12; Contacts: gold-plated
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — TAD961-01 — 09.09.2013 —