Thermocouple assembly.

WRNWith thermocouple As a measurement of the temperature transmitter and usually display instrument …

Description：

Productoverview:

WRN With thermocouple As a measurement of the temperature transmitter and usually display instrument and record instrument and electronic regulator supporting the use of. It can be directly measured in various production processes from 0 to 1800 DEG C. the range of liquid, steam and gas and solid surface temperature.According to state regulations, thermocouple assembly production company according to the international standard IEC 30 - Platinum Division No. 6, 10 Platinum Rhodium Platinum, nickel chromium nickel silicon, nickel constantan etc..

Two, work principle:

WRN series of <strong> assembly type thermocouple</strong> electrodes by two different conductor materials. The working principle of two different components of the conductor ends by welding, forming a loop direct temperature measuring end call measurement end, terminal end call reference end. When there is temperature difference between the measuring terminal and a reference terminal, will produce thermal emf in the circuit, connected to display instrument, the instrument will indicate the corresponding temperature of the thermocouple electromotive force generated by the value of the.

WRN series <strong> thermocouple assembly</strong> of the thermoelectric power with the measuring end temperature rise, thermoelectric sizeonly withthermocouple conductor material and the temperature difference between the two ends of the length, diameter and thermal electrode without thermocouple assembly is mainly composed of a junction box, protection tube, insulation casing, terminals, power extremely basic structure, and in a variety of fixed device.

Three, main features:

1, simple assembly, convenient replacement;

2, the pressure spring type temperature sensing element, good anti vibration performance;

3, large range of temperature measurement;

4, high mechanical strength, good pressure resistance.

Four, technical parameters:

Product executive standard

IEC584

IEC1515

GB/T16839-1997

JB/T5582-91

Insulation resistance at room temperature:

When the environment temperature is 20 + 15 ~ C, the relative humidity is not more than 80%, the test voltage is 500 + 50V (DC) insulation >1000 resistor between.M electrode and outer tube.

Fifth, the measurement range and basic error limit:

Thermocouple type	Code	Graduation	measuring range	Basic error limit
Nichrome constantan	WRK	E	0-800 C	+ 0.75%t
Nickel chromium nickel silicon	WRN	K	0-1300 C	+ 0.75%t
13- platinum rhodium	WRB	R	0-1600 C	+ 0.25%t
Platinum Rhodium 10 platinum	WRP	S	0-1600 C	+ 0.25%t
30 platinum rhodium 6	WRR	B	0-1800 C	+ 0.25%t

Note: t is the sense of temperature measured temperature component values (c) thermal inertia level

Thermal inertia level	Time constant (seconds)	Thermal inertia level	Time constant (seconds)
I	90180	III	10-30
II	30-90	IV	< 10

Nominal pressure thermocouple: generally refers to the static outer protective tube can withstand working temperature and pressure rupture.
Thermocouple: minimum insertion depth should be not less than 8-10 times the diameter of the protective sleeve (Frederick product exception)
Insulation resistance: when the ambient air temperature is 15-35 DEG C, relative humidity is less than 80% when the insulation resistance is more than 5 megohm (voltage 100V). With the splash proof junction box of the thermocouple, when the relative temperature is 93 + 3 DEG C, the insulation resistance of more than 500 billion euro (voltage 100V)
The insulation resistance of high temperature thermocouples under high temperature, the thermal electrode (including double type) and the insulation resistance between protection tube and double heat electrode (per meter) should be greater than the value specified under the table.
Sixth, code:

W	R	Specifications					Content (Zhongwei control)
		R					30- platinum rhodium 6
		P					10- platinum rhodium
		N					Nickel chromium nickel silicon
		E					Nickel - chromium (chromium Constantan)
		heat electric even materialmaterial	-	One			No fixed device
				Two			Fixed screw type
				Three			Movable flange
				Four			Fixed flange
				Five			A movable flange square form
				Six			Fixed thread taper protection tube
				Fixed form	Two		Splash proof
					Three		Waterproof type
					Four		Flameproof type
					Connection box	Zero	16mm protection tube
						One	25mm protection tube (double casing)
						Two	16mm high aluminum tube (single tube)
						Three	20mm high aluminum tube
						DesIgn Serial Number	.
W	R	.	-	.	.	.	.

Seventh, design selection and ordering information:
Please provide the indexing number, precision grade, fixed form, protection material, length or depth of insertion tube (protective tube length L=l+150, special insertion depth and protection tube material can be ordered according to the agreement).
Customer service service commitment:
1, my company sold thermocouple series products in quality problems arise within twelve months, responsible for free maintenance.
2, the warranty period if the products of our company have any quality problems, our company is responsible for free repair or replacement.
3, the warranty period if the user use undeserved, cause damage to the product, our company is responsible for the maintenance, collect the damaged parts cost.
4 after the warranty period, product quality problems, our company is responsible for the maintenance, collect the damaged parts cost.
5, if the user needs to our service, our company in the province of the user service personnel arrived at the scene within 12 hours, 48 hours outside users arrive at the scene.

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