Intrinsically safe explosion proof resistance thermometer NR (Japan Standards)

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Sheathed and solid-pack temperature sensors, when combined with a Zener barrier or insulation barrier, have passed the intrinsically safe explosion proof equipment inspection by the Technology Association of Industrial Safety (a type inspection agency designate the Ministry of Health, Labor and Welfare).

■ Zener Barrier
· DIN rail mounting and intrinsic safety ground (earthing) are possible at the same time.
- Three-terminal connection is possible, and one barrier can be used with one sensor.

■ insulation Barrier
No installation work required. Excellent noise immunity due to no installation.
Compatible with 2-wire, 3-wire, and 4-wire resistance thermometer (switchable).

configuration of a sensor, a Zener barrier, and an insulation barrier

Specifications

Intrinsically safe explosion proof resistance thermometer

Sensors	Models	NR Series
	Wire and element	Pt100
	Protection tube dimensions	Outer diameter φ2.0 to 8.0 mm Length: 50 to 5,000 mm
explosion proof specifications	models name	IS21
	explosion proof structure types	Intrinsically safe explosion proof proof structure (IA)
	Explosion class and ignition level of the target gas or vapor	IICT4
	Permissible voltage of intrinsically safe circuit	6.6V
	Permissible current of intrinsically safe circuit	900mA
Type inspection approval number		No. TC19308

Zener barrier (for resistance thermometer)

Combination Barrier	Models	MTL7756ac
	Non-intrinsically safe circuit allowable voltage	250V AC 50/60Hz 250V DC
	Voltage and current used	0.7V AC 250mA
	terminal resistance	19Ω (max)
Type inspection approval number		No. TC16437

insulation barrier (for resistance thermometer)

Combination Barrier	Models	MTL5582
	Non-intrinsically safe circuit allowable voltage	250V AC 50/60Hz 250V DC
	Output Signal	resistance thermometer (RTD) output
	Power supply	20-35VDC
	Maximum current consumption	33mA (at 24V DC)
Type inspection approval number		No. TC20279

*Please refer to the catalog for other specifications.

Download Documents & Softwares

Catalog

Specification Sheet (PS Sheet)

Intrinsically safe explosion proof insulation barrier (for thermocouples/ resistance thermometer)

ファイルサイズ1MB

Document No.

PE-70-2

Downloads
Intrinsically safe explosion proof Zener barrier (for thermocouples/ resistance thermometer)

ファイルサイズ1MB

Document No.

PE-58-3

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Temperature Sensors (Japan Only)

ファイルサイズ1MB

Document No.

PE-02-9

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General Industrial Temperature Sensors

ファイルサイズ1MB

Document No.

PE-03-13

Downloads
Sheathed resistance thermometer

ファイルサイズ1MB

Document No.

PE-31-13

Downloads
English) NR Sheathed resistance thermometer

ファイルサイズ1MB

Document No.

PSE-393

Downloads

CAD Data

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Instruction Manual

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Softwares

Application Examples

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