OTMT84

On order

WIKA · Temperature measurement · Family OTMT

Digital temperature transmitter, head-mounted version

Name: Digital temperature transmitter, head-mounted version
Brand: WIKA

For PROFIBUS ® PA or FOUNDATION™ Fieldbus

Range

-270…2500 °C

Output

PROFIBUS® PA

Accuracy

See typical measuring deviation per DIN EN 60770

Protection

IP00

CERoHSNAMUR NE21NAMUR NE89EACREACHEx ia IICT6...T4GaEx ecPTB 07 ATEX 2056 XBVS 08.0001X (IECEx certificate)

Price

On request

Depends on configuration

Request a quote

+38 (067) 285-77-70·info@avigan.com.uaViberTelegram

Description

The models OTMT84 and OTMT85 temperature transmitters with FOUNDATION™ Fieldbus or PROFIBUS ® PA communication feature a universal input for temperature measurements with resistance thermometers, thermocouples, resistance sensors and voltage sources, which are possible with or without customer-specific linearisation. Differential, average or redundancy temperature measurements can be realised.

The temperature transmitters are characterised by their reliability, long-term stability, high accuracy and extended diagnostic options.

For FOUNDATION™ Fieldbus, the OTMT85 is available with LAS functionality (Link Active Scheduler) and PID controller. These functionalities allow for master-independent regulations in the field instrument.

for further approvals see page 7

Special features

Model OTMT84: PROFIBUS ® PA profile 3.02
Model OTMT85: FOUNDATION™ Fieldbus H1
Explosion-protected version Ex ia (intrinsically safe/FISCO) and Ex ec available

Identification

Model	OTMT84
Product family	OTMT
Subcategory	Fieldbus temperature transmitter

Measuring range

Temperature ranges

−50…+1768 °C · +0…+2315 °C · −200…+850 °C · −60…+250 °C · −270…+1372 °C · −260…+400 °C · +40…+1820 °C · +0…+2500 °C · −210…+1200 °C · −200…+900 °C · −270…+1000 °C · −270…+1300 °C · −200…+600 °C

Accuracy

Accuracy class

See typical measuring deviation per DIN EN 60770

Electrical characteristics

Output signal	PROFIBUS® PA · FOUNDATION™ Fieldbus H1 · PROFIBUS PA · FOUNDATION Fieldbus H1 · FOUNDATION™ Fieldbus
Power supply	DC 9 ... 32 V
Electrical connection	Screw terminals, ≤ 2.5 mm² (14 AWG)

Operating environment

Ambient temperature	−40…+85 °C
IP rating	IP00
Weight	0.045 kg

Certifications and approvals

Certifications	CERoHSNAMUR NE21NAMUR NE89EACREACH
Explosion protection	ATEX: PTB 07 ATEX 2056 X, Zones 0, 1; II 1G Ex ia IIC T6...T4 GaIECEx: BVS 08.0001X, II 1G Ex ia IIC T6...T4 GaEx ia IICT6...T4GaEx ecPTB 07 ATEX 2056 XBVS 08.0001X (IECEx certificate)

Additional details

Sensor type	Pt100, Pt1000, Ni100, TC type J, K, L, E, N, T, U, R, S, B, C, D, A, mV sensor, resistance sensor
Sensor class	IEC 60751:2008, JIS C1604:2013, DIN 43760:1987, GOST R8.8585-2001, IEC 60584-1
Datasheet languages	EN, DE

Tables from datasheet

Measuring element

Sensor type	Max. configurable measuring range	Standard	Digital measuring deviation ( ± ) 1)	Non-re- peatability ( ± )
Maximum	Measured value dependent
Pt100	-200 ...+850 °C	IEC 60751: 2008	≤ ±0.12 °C	0.06 °C + 0.006 %x(MV-MRS)	≤ 0.05 °C
JIS C1604: 2013	≤ ±0.09 °C	0.05 °C + 0.006 %x(MV-MRS)	≤ 0.04 °C
Pt1000	-200 ...+850 °C	IEC 60751:2008	≤ ±0.09 °C	0.03 °C + 0.013 %x(MV-MRS)	≤ 0.05 °C
Ni100	-60 ...+250 °C	DIN 43760: 1987	≤ ±0.05 °C	0.05 °C + 0.006 %x(MV-MRS)	≤ 0.03 °C
Resistance sensor	■ 10 ...400Ω ■ 10 …2,000Ω	-	■ 32mΩ ■ 300mΩ	-	■ 15mΩ ■ ≤ 200mΩ
Potentiometer	0 ...100%	-	10%	-	≤ ±0.50%
TC type J (Fe-CuNi)	-210 ... +1,200 °C	IEC 60584-1 Cor.1:2015	≤ ±0.27 °C	0.27 °C - 0.005 %x(MV-MRS)	≤ 0.08 °C
TC type K (NiCr-Ni)	-270 ... +1,372 °C	IEC 60584-1 Cor.1:2015	≤ ±0.35 °C	0.35 °C - 0.005 %x(MV-MRS)	≤ 0.11 °C
TC type L (Fe-CuNi)	■ -200 ...+900 °C ■ -200 ...+800 °C	■ DIN 43760: 1987 ■ GOST R8.8585-2001	■ ≤ ±0.29 °C ■ ≤ ±2.2 °C	■ 0.29 °C - 0.009 %x(MV-MRS) ■ 2.2 °C - 0.015 %x(MV-MRS)	■ ≤ 0.07 °C ■ ≤ 0.15 °C
TC type E (NiCr-Cu)	-270 ... +1,000 °C	IEC 60584-1: 2014	≤ ±0.22 °C	0.22 °C - 0.006 %x(MV-MRS)	≤ 0.07 °C
TC type N(NiCrSi-NiSi)	-270 ... +1,300 °C	IEC 60584-1: 2014	≤ ±0.48 °C	0.48 °C - 0.014 %x(MV-MRS)	≤ 0.16 °C
TC type T (Cu-CuNi)	-260 ...+400 °C	IEC 60584-1: 2014	≤ ±0.36 °C	0.36 °C - 0.04 %x(MV-MRS)	≤ 0.11 °C
TC type U (Cu-CuNi)	-200 ...+600 °C	-	≤ ±0.33 °C	0.33 °C - 0.028 %x(MV-MRS)	≤ 0.10 °C
TC type R (PtRh-Pt)	-50 ... +1,768 °C	IEC 60584-1 Cor.1:2015	≤ ±1.12 °C	1.12 °C - 0.03%xMV	≤ 0.76 °C
TC type S (PtRh-Pt)	-50 ... +1,768 °C	IEC 60584-1: 2014	≤ ±1.15 °C	1.15 °C - 0.022%xMV	≤ 0.74 °C
TC type B (PtRh-Pt)	40 ... 1,820 °C	IEC 60584-1: 2014	≤ ±1.50 °C	1.5 °C - 0.06 %x(MV-MRS)	≤ 0.67 °C
TC type C (W5Re-W26Re)	0 ... 2,315 °C	IEC 60584-1: 2014	≤ ±0.66 °C	0.55 °C + 0.0055%xMV	≤ 0.33 °C
TC type D (W3Re-W25Re)	0 ... 2,315 °C	IEC 60584-1: 2014	≤ ±0.75 °C	0.75 °C - 0.008%xMV	≤ 0.41 °C
TC type A (WRe-WRe)	0 ... 2,500 °C	IEC 60584-1: 2014	≤ ±1.33 °C	0.8 °C + 0.021%xMV	≤ 0.52 °C
mV sensor	■ -20 ...100mV ■ -5 ...+30mV	-	10 µV	-	4 µV

Measuring element

Sensor type	Long-term stability after 1 year (max.)	Ambient temperature: Effect (±) per 1 °C change	Supply voltage: Effect (±) per V change
		Maximum (digital 1) )	Measured value dependent (digital 1) )	Maximum (digital 1) )	Measured value dependent (digital 1) )
Pt100	≤ 0.03 °C + 0.024%x measuring span	■ ≤ 0.02 °C ■ ≤ 0.01 °C	0.002 %x(MV-MRS), min. 0.005 °C	■ ≤ 0.12 °C ■ ≤ 0.01 °C	0.002 %x(MV-MRS), min. 0.005 °C
Pt1000	≤ 0.034 °C + 0.02%x measuring span	≤ 0.01 °C	0.002 %x(MV-MRS), min. 0.005 °C	≤ 0.01 °C	0.002 %x(MV-MRS), min. 0.004 °C
Ni100	≤ 0.026 °C + 0.015%x measuring span	≤ 0.05 °C	-	≤ 0.005 °C	-
Resistance sensor	■ ≤ 10 mΩ+0.022%x measuring span ■ ≤ 144 mΩ+0.009% x measuring span	■ ≤6mΩ ■ ≤30mΩ	0.0015 %x(MV-MRS), min.1.5mΩ 0.015 %x(MV-MRS), min.15mΩ	■ ≤6mΩ ■ ≤30mΩ	■ 0.0015 %x(MV-MRS), min.1.5mΩ ■ 0.015 %x(MV-MRS), min.15mΩ
Potentiometer	-	-	-	-	-
TC type J (Fe-CuNi)	≤ 0.06 °C + 0.019%x measuring span	≤ 0.02 °C	0.0028 %x(MV-MRS), min. 0.02 °C	≤ 0.02 °C	0.0028 %x(MV-MRS), min. 0.02 °C
TC type K (NiCr-Ni)	≤ 0.09 °C + 0.022%x (MV + 150 °C)	≤ 0.04 °C	0.003 %x(MV-MRS), min. 0.013 °C	≤ 0.04 °C	0.003 %x(MV-MRS), min. 0.013 °C

Measuring element

Sensor type	Long-term stability after 1 year (max.)	Ambient temperature: Effect (±) per 1 °C change	Supply voltage: Effect (±) per V change
		Maximum (digital 1) )	Measured value dependent (digital 1) )	Maximum (digital 1) )	Measured value dependent (digital 1) )
TC type L (Fe-CuNi)	■ ≤ 0.06 °C + 0.017% x measuring span ■ ≤ 0.08 °C + 0.015% x measuring span	≤ 0.02 °C	-	≤ 0.02 °C	-
TC type E (NiCr-Cu)	≤ 0.06 °C + 0.018%x measuring span	≤ 0.03 °C	0.003 %x(MV-MRS), min. 0.016 °C	≤ 0.03 °C	0.003 %x(MV-MRS), min. 0.016 °C
TC type N(NiCrSi-NiSi)	≤ 0.13 °C + 0.015%x (MV + 150 °C)	≤ 0.04 °C	0.0028 %x(MV-MRS), min. 0.020 °C	≤ 0.04 °C	0.0028 %x(MV-MRS), min. 0.020 °C
TC type T (Cu-CuNi)	≤ 0.09 °C + 0.011%x measuring span	≤ 0.01 °C	-	≤ 0.01 °C	-
TC type U (Cu-CuNi)	≤ 0.09 °C + 0.013%x measuring span	≤ 0.01 °C	-	≤ 0.01 °C	-
TC type R (PtRh-Pt)	≤ 0.31 °C + 0.011%x (MV - 50 °C)	≤ 0.06 °C	0.0035 %x(MV-MRS), min. 0.047 °C	≤ 0.06 °C	0.0035 %x(MV-MRS), min. 0.047 °C
TC type S (PtRh-Pt)	≤ 0.31 °C + 0.011%x measuring span	≤ 0.05 °C	-	≤ 0.05 °C	-
TC type B (PtRh-Pt)	≤ ±0.50 °C	≤ 0.06 °C	-	≤ 0.06 °C	-
TC type C (W5Re-W26Re)	≤ 0.15 °C + 0.018%x measuring span	≤ 0.09 °C	0.0045 %x(MV-MRS), min. 0.03 °C	≤ 0.09 °C	0.0045 %x(MV-MRS), min. 0.03 °C
TC type D (W3Re-W25Re)	≤ 0.21 °C + 0.015%x measuring span	≤ 0.08 °C	0.004 %x(MV-MRS), min. 0.035 °C	≤ 0.08 °C	0.004 %x(MV-MRS), min. 0.035 °C
TC type A (WRe-WRe)	≤ 0.17 °C + 0.021%x measuring span	≤ 0.14 °C	0.0055 %x(MV-MRS), min. 0.03 °C	≤ 0.14 °C	0.0055 %x(MV-MRS), min. 0.03 °C
mV sensor	≤ 2 µV + 0.022%x measuring span	≤ 3 µV	-	≤ 3 µV	-

Further details on: Measuring element

Measuring current during measurement	Max. 0.3 mA(Pt100)
Connection methods
Resistance thermometer (RTD)	1 sensor in 2-/3-/4-wire connection or 2 sensors in 2-/3-wire connection →For further information, see 'Designation of connection terminals'
Thermocouples (TC)	1 sensor or 2 sensors →For further information, see 'Designation of connection terminals'
Max. lead resistance
Resistance thermometer (RTD)	50 Ωeach wire, 3-/4-wire
Thermocouples (TC)	5 kΩ each wire
Cold junction compensation, configurable	Internal cold junction (Pt100) External cold junction:Value adjustable -40 ...+85 °C [-40 ...+185 °F]

View all (20)

Accuracy specifications

Typical measuring deviation (per DIN EN 60770, 25 °C ±3 °C, supply voltage 24 V DC)
Input sensor type	Standard	Measuring range	Typical measuring deviation (±) Digital value 1)
Pt100	IEC 60751: 2008	0 ... 200 °C	0.08 °C
Pt1000	IEC 60751: 2008	0 ... 200 °C	0.08 °C
TC type K (NiCr-Ni)	IEC 60584-1	0 ... 800 °C	0.31 °C
TC type S (PtRh-Pt)	IEC 60584-1	0 ... 800 °C	0.97 °C
TC type L (Fe-CuNi)	GOST R8.8585-2001	0 ... 800 °C	2.18 °C

Pt100 / Measuring range 0 ... 200 °C / Ambient temperature 25 °C / Supply voltage DC 24 V

Measuring deviation	0.084 °C
0.06 °C + 0.006 %x(200 °C - (-200 °C))

Pt1000 / Measuring range 0 ... 200 °C / Ambient temperature 35 °C / Supply voltage DC 30 V

Measuring deviation 0.06 °C + 0.006 %x(200 °C - (-200 °C))	0.084 °C
Influence of ambient temperature (35 - 25) x (0.002 %x200 °C - (-200 °C)) min. 0.005 °C	0.08 °C
Influence of supply voltage (30 - 24) x (0.002 %x200 °C - (-200 °C)) min. 0.005 °C	0.048 °C
Measuring deviation (typical) √(measuring deviation² + influence of ambient temperature² + influence of supply voltage²	0.126 °C

Output signal
Analogue output	■ FOUNDATION™ Fieldbus ■ PROFIBUS ® PA
Version of analogue output
FOUNDATION™ Fieldbus	H1, IEC 61158-2
PROFIBUS ® PA	EN 50170 vol. 2 / profile 3.02
Residual current FDE (Fault Disconnection Electronic)	0mA
Data transfer rate (supported baud rate)	31.25 kBit/s
Signal coding	Manchester
Functionality	Basic or LAS
Function blocks
FOUNDATION™ Fieldbus	2 x 3 analogue input (AI) 1 x standard PID controller 1 x input selector (ISEL)
PROFIBUS ® PA	4x analogue input (AI)
Execution time, PID controller	< 200 ms
Response time (programmable)	1 ... 60 s
Updating time	< 400 ms
Execution time, analogue input block	< 50 ms
Factory configuration
Sensor	Pt100
Connection method	3-wire connection
Measuring range ('Limit Handling')	0 ... 100 °C
Communication
Communication protocol	Model OTMT84 PROFIBUS ® PA profile 3.02 Model OTMT85 FOUNDATION™ Fieldbus H1
Configuration software	Endress+Hauser FieldCare (DTM) SIMATIC PDM (EDD)
Configuration
User linearisation	Store customer-specific sensor characteristics in the transmitter using software (other sensor types can be used in this way) Number of data points: min. 2 / max. 30
Monitoring functions
Test current for sensor monitoring 3)	Nom.20 µA during test cycle, otherwise 0 µA
Sensor break monitoring	Always active
Sensor short-circuit monitoring	Active (only for resistance thermometers)
Self-monitoring	Active permanently, e.g.RAM/ROM test, logical program operating checks and validity check
Measuring range monitoring	Monitoring of the set measuring range for upper/lower deviations Standard: Deactivated

Output signal
Monitoring functionality when 2 sensors have been connected (dual sensor)	Redundancy	In the case of a sensor error (sensor break, lead resistance too high or outside the measuring range of the sensor) of one of the two sensors, the process value will be only based on the error-free sensor.Once the error is rectified, the process value will again be based on the two sensors, or on sensor 1.
	Ageing control (sensor drift monitoring)	An error signalling on the output is activated if the value of the temperature difference between sensor 1 and sensor 2 is higher than a set value, which can be selected by the user. This monitoring only generates a signal if two valid sensor values can be determined and the temperature difference is higher than the selected limit value. (Cannot be selected for the 'Difference' sensor functionality, since the output signal already indicates the difference value).
Voltage supply	C C
Supply voltage U B	DC 9 ...32V Not dependant on polarity (max. 35 V)

Electrical connection

Connection type B B	Screw terminals
Wire cross-section	≤ 2.5 mm² (14 AWG)
Cable design	Rigid or flexible
Max. lead resistance 24.1 24.1
Resistance thermometer (RTD)	50 Ωeach wire, 3-/4-wire
Thermocouples (TC)	5 kΩ each wire
Insulation voltage (input to analogue output)	AC 2 kV, (50 Hz / 60 Hz); 1 s

Sensor input 2	Sensor input 1
RTD or resistance sensor, 2-wire	RTD or resistance sensor, 3-wire	RTD or resistance sensor, 4-wire	Thermocouple (TC), voltage source
RTD or resistance sensor, 2-wire	x	x	-	x
RTD or resistance sensor, 3-wire	x	x	-	x
RTD or resistance sensor, 4-wire	-	-	-	-
Thermocouple (TC), voltage source	x	x	x	x

Materials

Non-wetted parts	Case: Polycarbonate (PC) Screw terminals: Nickel-plated brass, gold-plated contact Potting:WEVOPU403 FP/FL

Operating conditions

Ambient temperature	-40 ...+85 °C
Storage temperature	-40 ...+100 °C
Max. relative humidity per IEC 60068-2-30	95%
Condensation per IEC 60068-2-33	Condensation allowed
Climate class per IEC 654-1: 1993	Cx (-40 ...+85 °C, 5 ... 95 %r.h.)
Shock and vibration resistance per DIN EN 60068-2-6	10 …2,000 Hz at 5 g
Ingress protection of the complete instrument (per IEC/EN 60529)	IP00 (with screw terminals)
Service life	Max. service life of 20 years (in line with ISO 13849-1)

Logo	Description	Country
	EU declaration of conformity	European Union
	EMCdirective EN 61326 emission (group 1, class B) and immunity (industrial application), and also NAMUR NE21
	RoHS directive

Logo	Description	Country
	EU declaration of conformity ATEX directive Hazardous areas	European Union
	IECEx Hazardous areas	International

Logo	Description
-	China RoHS directive
NAMUR	NAMUR ■ EMCper NAMUR NE21 ■ Sensor break monitoring per NAMUR NE89

Certificates

Certificates	■ 2.2 test report ■ 3.1 inspection certificate
Calibration	DAkkS calibration certificate

Safety-related characteristic values (Ex)	PTB 07 ATEX 2056 X
	Zones 0, 1 II 1G Ex ia IICT6…T4Ga
Connection values / Intrinsically safe supply and signal circuit (4 ... 20 mA current loop)
Terminals	+ / -
Supply voltage U B	DC 9 ... 32 V, not dependant on polarity
Maximum voltage U i	DC 24V (or DC 17.5 V)
Maximum current I i	250 mA(or 380 mA)
Maximum power P i	≤ 1,400mW
Effective internal capacitance C i	5 nF
Effective internal inductance L i	2.75 µH
Sensor circuit connection values
Terminals	3 - 7
Maximum voltage U 0	DC 7.2V
Maximum current I 0	25.9mA
Maximum power P 0	46.7mW
Effective internal capacitance C i	5 nF
Effective internal inductance L i	Negligibly small
Maximum external capacitance C 0	Gas, category 1 and 2, group IIC	0.97 µF
Gas, category 1 and 2, group IIB	4.6 µF
Gas, category 1 and 2, group IIA	6 µF
Maximum external inductance L 0	Gas, category 1 and 2, group IIC	20mH
Gas, category 1 and 2, group IIB	50mH
Gas, category 1 and 2, group IIA	100mH
Characteristic curve	Linear

Application	Ambient temperature range	Temperature class
Group II	-20 ...+60 °C	T4
Gas, category 1	-20 ...+50 °C	T5
	-20 ...+40 °C	T6
Group II	-40 ...+85 °C	T4
Gas, category 2	-40 ...+70 °C	T5
-40 ...+55 °C	T6

Model	Description	Order number
	Adapter	Suitable forTS 35 per DIN EN 60715 (DIN EN 50022) or TS 32 per DIN EN 50035 Material: Plastic / stainless steel Dimensions: 60 x 20 x 41.6mm	- 2 3593789
	Adapter	Suitable forTS 35 per DIN EN 60715 (DIN EN 50022) Material: Steel, tin-plated Dimensions:49x8x14mm	3619851