Four channel digital temperature to bus converter for many popular sensors

Resistance thermometer inputs, types Pt/Ni 100, Pt/Ni 500, Pt/Ni 1000
Thermocouples inputs, types J, T, K, E, N, S, R, B, C or inputs a mV/T-characteristic curve. Selectable internal or external reference junction
A bipolar mV-Voltage input. Free linearizing curves possible.
Freely definable scaling of the quantity to be measured through stating range, decimal point position and unit from the list or defined unit.
Zoom function, expanded scale, linearizing, inverse modus.
Non-volatile saving of all set parameters.
4 measuring channels

The 4-channel transmitter AD-MV 554 GT is a programmable measuring device for measuring resistance and millivolt signals. Thanks to the integrated function blocks and free linearization curves, the AD-MV 554 GT can be used universally, preferably for temperature measurement with temperature sensors. The measured values are accessed via appropriate registers using the Modbus RTU protocol. Device addresses from 1 to 99 can be set using the address switches accessible on the front. All parameters are set up via the RS485 interface using the „AD-Studio“ PC configuration software. The interface parameters can also be set for inserting the devices into existing bus systems. The operating voltage is indicated by means of a green light-emitting diode. The data communication is signaled with a yellow light emitting diode. Invalid measuring signals outside the defined measuring range are detected. In this case the green LED flashes.

Resistance thermometer inputs Pt100, Pt500, Pt1000 to DIN EN 60751
Measuring range	-200 … +850 °C
Connection method	2-, 3-, 4-wire system
Resolution	16 Bit
Accuracy	2 K
Smallest measuring spans	30 K
Max line resistance¹⁾	10 Ohm / cable
Sensor supply
For 4-wire connection	< 500 µA
For 2 – and 3-wire connection	< 250 µA
¹⁾With 2-conductor the line resistance comes as an offset into the measurement.
Resistance thermometer inputs Ni100, Ni500, Ni1000 to DIN EN 43760
Measuring range	-60 … +230 °C
Connection method	2-, 3-, 4-wire system
Resolution	16 Bit
Accuracy	2 K
Smallest measuring spans	30 K
Max line resistance¹⁾	10 Ohm / cable
Sensor supply
For 4-wire connection	< 500 µA
For 2 – and 3-wire connection	< 250 µA
¹⁾With 2-conductor the line resistance comes as an offset into the measurement.
Thermocouples
Comparative place:
Internal	Measurement at device terminals
External	Cold junction temperatureselectable by parameters
Resolution	16 Bit
Accuracy	0,2 % of measuring range
Measuring range type J	-200 … +1200 °C
To DIN EN 60584:
Measuring range type T	-200 … +400 °C
Measuring range type K	-200 … +1360 °C
Measuring range type E	-200 … +1000 °C
Measuring range type N	-200 … +1300 °C
Measuring range type S	-40 … +1760 °C
Measuring range type R	-40 … +1760 °C
Measuring range type B	+400 … +1800 °C
After standard ASTM E988:
Measuring range type C	0 … +2320 °C
Smallest measuring spans	100 K
Voltage inputs
Measuring range	-18 … +18 mV
	-36 … +36 mV
	-72 … +72 mV
	-144 … +144 mV
Resolution	16 Bit
Accuracy	0,2 % of measuring range
Transmission behaviour
Sampling rate	1 measure / s
Temperature influence	+/- 100 ppm / K of full scale
RS485-Bus
Software protocol	Modbus-RTU
Data format	19200, e, 8, 1
Max. bus users	99
Bus termination	120 ohms both sides at the end
Max. length of bus	500 m (no spur lines)
Cable	Twisted and shielded
LEDs
Green [On]	Supply (blinking on error)
Yellow [DATA]	RS485 Communication
Controls
Address switch	01 … 99
Supply
Supply voltage	20 … 253 V DC / 50 … 253 V AC
Max. power consumption	0,6 W / 1,4 VA
Housing
Dimensions (WxHxD)	71 x 90 x 58 mm³
Manner of fastening	DIN rail mounting 35mm, EN 50022
Type of protection	IP 20
Connection method	Screw clamp
Bolting torque terminals	0,5 Nm
Wire cross section	Max. 2,5 mm²
Weight	Ca. 30 g
Environmental conditions
Permissible ambient temperature	-10 … +50 °C
Storage and transport	-10 … +70 °C (no condensation)
EMC
Product family standard²⁾	EN 61326-1
Emitted interference	EN 55011, CISPR11 Cl. B, Gr. 1
²⁾During electromagnetic disturbance minor changes in output signal are possible.
Electrical safety requirements
Product family standard	EN 61010-1
Overvoltage category	II
Pollution degree	2
Galvanic isolation, test voltages
Signal / supply unit	3 kV, 50 Hz (1 min.)
Signal / RS485 bus	Nogalvanic isolation
Signal / Signal	Nogalvanic isolation

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