:::VERTEX::: VT-NR, VT-NB Microprocessor Based Temperature Transmitter

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	Microprocessor Based Temperature Transmitter

Feature:
VT-NB and VT-NR comprehends a family of head mount and    DIN rail mount 4-20mA temperature transmitters for the most    common temperature applications.
One single model can be configured to accept several    thermocouple types and Pt100 RTDs.
Manual zero (offset) adjustment can be done by means of a    wire jumper simulating a keyboard for the VT-NB or with 2 front    keys in the VT-NR.
Sensor failure protection: programmable burnout upscale or    downscale.
Cold junction compensation for thermocouples

Configuration:

Configuration is achieved by means of an RS232 cable connected to a PC with the convenient software.

Specification:

Programmable input:	thermocouples type J, K, T, E, N, R, S, Pt100 RTD
	and 0-50mV with programmable working range.
	2-wire loop powered 4-20 mA output.
	Linearized 4 to 20 mA or 20 to 4 mA output for t/c and Pt100.
	Optional 0 to 10 Vdc for VT-NR only.
	Digital filter can be set for best 50 or 60 Hz performance.
Power supply:	18 to 32 Vdc.
Maximum load (RL) :	RL(max.)=(Vdc-12)/0.02〔Ω〕 where: Vdc= Power supply voltage
Accuracy:	Pt100 and 0 to 50 mV ± 0.2% full scale.
Accuracy:	Thermocouples ± 0.3% max. of full scale
Temperature effect:	0.003% SPAN/°C.
Working temperature:	-40 to +85°C (-40 to 185°F).
Humidity:	0-90% RH
Resolution:	0.004mA(12 bits)
Response Time :	<100ms
Electromagnetic compatibility:	EN50081-2, EN50082-2
	No isolation between the sensor and the 4-20 mA loop.
	Internal protection against polarity inversion.
Housing:	ABS plastic

Input Types and Ranges :

User can easily program input type and temperature range as below:

INPUT	RANGE	MIN SPAN
Thermocouple K	0 to 1370°C / 32 to 2500℉	100℃
Thermocouple J	0 to 760°C / 32 to 1400℉	100℃
Thermocouple R	0 to 1760°C / 32 to 3200℉	400℃
Thermocouple S	0 to 1760°C / 32 to 3200℉	400℃
Thermocouple T	0 to 400°C / 32 to 752℉	100℃
Thermocouple N	0 to 1300°C / 32 to 2372℉	100℃
ThermocoupleE	0 to 720°C / 32 to 1328℉	100℃
Pt100	-200 to 650°C / -328 to 1202℉	40℃
Voltage	0 to 50mV	5mV

Configuration :

Configuration is achieved by means of an RS232 cable connected to a PC with the convenient software.

Dimension:

Electrical Connections:

Ordering Infomation:

VT－NB－

__________

－RANGE

VT－NR－

－RANGE

INPUT	CODE	MAX. RANGE	MIN. SPAN
Thermocouple J	J	0 to 760°C / 32 to 1400℉	100℃
Thermocouple K	K	0 to 1370°C / 32 to 2500℉	100℃
Thermocouple R	R	0 to 1760°C / 32 to 3200℉	400℃
Thermocouple S	S	0 to 1760°C / 32 to 3200℉	400℃
Thermocouple T	T	0 to 400°C / 32 to 752℉	100℃
Thermocouple N	N	0 to 1300°C / 32 to 2372℉	100℃
Thermocouple E	E	0 to 720°C / 32 to 1328℉	100℃
Pt100	D	-200 to 650°C / -328 to 1202℉	40℃
Voltage	V	0 to 50mV	5mV