Price of digital integrated temperature transmitter

NegotiableUpdate on 06/11

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Nature of the Manufacturer: Producers

Product Category

Place of Origin

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Overview

Brief description: Digital integrated temperature transmitters are usually used in conjunction with display instruments, recording instruments, electronic computers, etc., with an output of 4-20mA. They directly measure the temperature of liquid, steam, gas media, and solid surfaces within the range of 0-1800 ℃ in various production processes.

Product Details

1、 Application of digital integrated temperature transmitter

SF-W integrated temperature transmitter is usually used in conjunction with display instruments, recording instruments, electronic computers, etc., with an output of 4-20mA. It directly measures the temperature of liquid, steam, gas media, and solid surfaces within the range of 0-1800 ℃ in various production processes.

2、 Main features of digital integrated temperature transmitter

● Two line output of 4-20mA, strong anti-interference ability;
Save the cost of compensating wires and installing temperature transmitters;
● Large measurement range;
Cold end temperature automatic compensation, non-linear correction circuit.

3、 Working principle of digital integrated temperature transmitter

The change in thermoelectric potential (resistance) measured by a thermocouple (resistor) in working condition generates an unbalanced signal through the bridge of a temperature transmitter, which is amplified and converted into a 4-20mA DC electrical signal for the working instrument to display the corresponding temperature value.

4、 Main technical parameters of digital integrated temperature transmitter

○ Product execution standards
IEC584
IEC1515
IEC751
JB/T7391-94
○ Temperature measurement range and allowable deviation
● Thermistor

Digital integrated temperature transmitter（LCD）

model	Graduation	Temperature measurement range ℃	accuracy class	Allowable deviation
WZPB	Pt100	-200～+500	A-level	±（0.15+0.002\|t\|）
WZPB	Pt100	-200～+500	Grade B	±（0.30+0.005\|t\|）
WZCB	Cu50 Cu100	-50～+100	-	±（0.30+0.006\|t\|）

● Thermocouple

model	Graduation	Allowable error and material grade
		Level I		class ii
		Allowable deviation	Temperature measurement range ℃	Allowable deviation	Temperature measurement range ℃
WRNB	K	±1.5℃ ±0.004│t│	-40～+375 375~1000	±2.5℃ ±0.0075│t│	-40～+333 333~1200
WRMB	N	±1.5℃ ±0.004│t│	-40～+375 375~1000	±2.5℃ ±0.0075│t│	-40～+333 333~1200
WREB	E	±1.5℃ ±0.004│t│	-40～+375 375~800	±1.5℃ ±0.004│t│	-40～+333 333~900
WRFB	J	±1.5℃ ±0.004│t│	-40～+375 375~750	±1.5℃ ±0.004│t│	-40～+333 333~750
WRCB	T	±1.5℃ ±0.004│t│	-40-～+125 125~350	±1℃ ±0.0075│t│	-40～+333 133~350
WRPB	S	±1℃ ±[1+0.003（t-1100）]	0～+1100 1100~1600	±2.5℃ ±0.0025│t│	0~600 600~1600

Output signal: 4-20mA, load resistance 250 Ω, transmission wire resistance 100 Ω
○ Output method: Two line system
○ Tolerance level: 0.1; 0.2； zero point five
○ Power supply: 24V DC ± 10%
○ Protection level: IP65

insulation resistance

The insulation resistance between the instrument output terminal and the casing should not be less than 50 Ω

thermal response time

When there is a step change in temperature, the time required for the current output signal of the instrument to change to 50% of the step change is usually represented by τ 0.5. When the step response stabilization time of the temperature transmitter does not exceed one-fifth of the thermocouple (resistance) thermal response stabilization time τ 0.5, the thermocouple (resistance) thermal response time is used as the thermal response time of the instrument;
When the step response stability time of the temperature transmitter does not exceed half of the thermal response stability time τ 0.5 of the thermocouple (resistance), the thermal response time of the temperature transmitter is used as the thermal response time of the instrument.

Basic error

The basic error of the instrument should not exceed the combined error of the basic errors of the thermocouple (resistor) and temperature transmitter.

work environment

Installation site level	Temperature ℃	Relative humidity%	Atmospheric pressure KPa
Cx1	-25～+55	5~95	86~106
Cx2	-25～+70
Cx3	-40～+80

5、 Model naming method

W	Temperature instrument
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|
	category
	R Z	thermocouple thermal resistance
	\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Index number of temperature sensing element material
		M N E F C P Q R	Nickel chromium silicon nickel silicon N Nickel chromium nickel silicon K Nickel chromium copper nickel E Iron Copper Nickel J Copper Copper Nickel T Platinum rhodium 10 platinum S Platinum rhodium 13 platinum R Platinum rhodium 30- Platinum 6B
		P C	Platinum Pt100 Copper Cu50
		\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	B	temperature transmitter
			\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|
					Installation fixed form
					1 2 3 4 5 6	No fixed device Fixed thread Movable flange Flange Flexible tube connector type Fixed thread cone form
					\| \| \| \| \| \| \| \| \| \| \| \|	Form of junction box
						2	Anti spray type
						\| \| \| \| \| \| \| \| \| \| \|	Protection tube diameter
							0 1 2 3	Φ16 Φ12 Φ 16 high alumina pipe Φ 20 high alumina pipe
							\| \| \| \| \| \|	Workplace format
								G	variable cross-section
								\| \| \| \|	Display mode
									N S	Display without header Digital display (LCD liquid crystal display)
									\|
TS-W	R	N	B	--	2	2	0	G	N

Selection Notice

1) Model number
2) Dividing number
3) Accuracy level of thermocouple (resistor)
4) Installation fixed form
5) Material of protective tube
6) Length or insertion depth
Example A: Thermocouple with temperature transmitter, K-type, fixed thread M27 × 2, protective tube 316L, length 450mm, insertion depth 300mm. TL-WRNB-220, L=450 × 300, dIIBT4, protective tube 316L, thread M27 × 2.