MTP 300I-SIL

The fastest SIL2-certified thermocouple transmitter in the world. In high pressure processes like plastic production, in gas turbines and other application, the quick measurement of the temperature is a crucial factor. Especially in LDPE plants, in which rapid decomposition reactions are a dangerous and costly risk, several milliseconds play a significant role for detecting decompositions and preventing damage to the plant

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Measures: Voltage

Industries: Animal Feed, Chemical, Hydrogen, Manufacturing, Paper, Pharma, Wood

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The 2-wire temperature transmitter MTP300i-SIL-* has one, the MTP300-SIL-2* two galvanic isolated thermocouple-inputs. They have been specially developed for rapid temperature measurement in the hazardous area. Each TC-input is equipped with a Pt100 sensor for the cold-junction compensation. The thermocouple transmitter must be intrinsically safe supplied by a repeater power supply or with a ZENER barrier.

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Properties

2-wire transmitter for thermocouples
Galvanically isolated measuring inputs with cold-junction compensation
Signal pass-through time: without Butterworth filter ≤ 3 ms with Butterworth filter ≤ 38 ms
Installation in zone 1 or 2 permissible
Intrinsic safety according to EN 60079-11
SIL 2 according to IEC 61508
Device type B according to IEC 61508
Error indication according to NAMUR NE 43
LED for status indication

Parameter	Specification
Certificate	Ex certificate IECEx BVS 14.0073 X, Ex ib [ia Ga] IIC T4 Gb
Functional Safety (SIL)	SIL 2 according to EN 61508
Power Supply – Ex ib IIC (terminals 1 and 4)	Voltage Ui: 28 VDC Current Ii: 95 mA Power Pi: 655 mW Effective inner capacity Ci: 26 nF Effective inner inductivity Li: negligible
Thermocouple Input – Ex ia IIC / Ex ib IIC (terminals 5-8, 9-12)	Voltage Uo: 1 VDC Current Io: 1.8 mA Power Po: 0.5 mW Permissible outer capacity Co: 10 μF Permissible outer inductivity Lo: 100 mH
Input Signal (terminals 5-8)	Thermocouple type NiCr-Ni K, fixed range (see nameplate), Cold-junction compensation with Pt100 sensor (-10 … +70°C)
Output Signal (terminals 1-4)	Current proportional to temperature Io: 4–20 mA, Max current < 24 mA, Behavior by failure Io ≤ 3.6 mA
Status Indicator	Green LED: power / mA signal, Off: behavior by failure
Signal Pass-through Time	Input to output without Butterworth filter ≤ 3 ms, with filter ≤ 38 ms (default)
Transmission Error	Typical < 0.05% (of final value)
Temperature Coefficient	Typical < 0.05% / 10 K
Pt100 Sensor Error	Class B: ±(0.3°C + 0.005 × t), <0.23°C at 70°C
Cold-junction Compensation Error	0°C–50°C: <0.4°C, -10°C–70°C: <1.0°C
Linearization Error	Typical < 0.1°C
Measured Value Deviation	Typical < 0.6°C at 20°C
Electric Isolation	Tested according to EN 60079-11
Electromagnetic Compatibility	Tested according to EN 61326-3-2
Current Loop Supply	Voltage range (RLoad 70–800 Ω): 12.5–28 V, Current range: >3.5–<24 mA, Power dissipation: Min 50 mW, Max 560 mW
Ambient Temperature	Operation: -10°C to +70°C, Storage/Transport: -20°C to +80°C
Humidity	Permissible operation: 10–95% r.H, no condensation
Housing Material	Polyamide, Light grey
Protection Class	IP20
Dimensions	Width × Length × Height: 22.5 × 115 × 108 mm (with terminal blocks)
Inflammability Class	UL94 V0
Housing Type for Mounting	35 mm DIN rails
Weight	Approx. 200 g (with terminal blocks)
Connection Data	Solid wire: 0.2–2.5 mm² Stranded wire: 0.2–2.5 mm² AWG: 24–14 Stripping length: 7 mm Connection method: pluggable screw connection Tightening torque: 0.5–0.6 Nm
Installation	Safe area: Install in clean, dry environment Ex area (zone 1 or 2): Install in suitable housing with minimum IP54