WR □ B series explosion-proof thermistor with temperature transmitter-Fornitore globale

Product Groups

Firm Information

Transaction Level

VIP member
Contact
Phone
Address

No. 69 Qiaotian Street, Tianchang City, Anhui Province

Contact Now

WR □ B series explosion-proof thermistor with temperature transmitter

Contact Supplier

More Products

Product details

name:

WR □ B series explosion-proof thermistor with temperature transmitter

explain:

application

Usually used in conjunction with display instruments, recording instruments, electronic computers, etc., it outputs 4-20mA. It directly measures the temperature of liquid, steam, gas media, and solid surfaces within the range of -200~1300 ℃ in various production processes.

Working principle

Explosion proof thermocouples utilize the principle of gap explosion-proof. When an explosion occurs inside the chamber, it can be extinguished and cooled through the gap between the joint surfaces, preventing the temperature of the flame after the explosion from being transmitted outside the chamber, thus enabling temperature measurement. The resistance value produced by the thermal resistor generates an unbalanced signal through the bridge of the temperature transmitter, which is amplified and converted into a 4-20mA DC electrical signal to the working instrument. The working instrument then displays the corresponding temperature value.

characteristic

·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 self compensation, non-linear correction circuit

Main technical numbers

Product execution standards

IEC584

IEC751

IEC1515

GB3836-2000

JB/T5518-91

JB/T7391-94

Temperature measurement range and allowable deviation

thermal resistance

model	Graduation	Measuring 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~+150	-	±（0.30+0.006│t│）

Output signal: 4~20mA, load resistance 250 Ω, transmission wire resistance 100 Ω

Output method: Two line system

Protection level: IP65

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

Accuracy level: Temperature transmitter Accuracy level: 0.1; 0.2； zero point five

Display accuracy: Analog indication level 2.5; Digital display level 1.0

Power supply: 24V DC ± 10%

Explosion proof grade:

Explosion proof form: dIIBT4, dIICT5, dIICT6

Intrinsic safety form: ia Ⅱ CT6

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, usually represented by t0.5. When the step response stabilization time of the temperature transmitter does not exceed one-fifth of the thermal response stabilization time t0.5 of the thermal resistance, the thermal response time of the thermal resistance 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 t0.5 of the thermal 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 thermistor and temperature transmitter

△ =△₁+△₂

△₁Indicating the allowable deviation of thermal resistance;

△₂Indicate the basic error of the transmitter;

work environment

Installation site level	Temperature ℃	Relative humidity%	Atmospheric pressure kPa
C×1	-25~+55	5~95	86~106
C×2	-25~+70
C×3	-40~+80

Model and specifications

Selection Notice1. Model 2. Index number 3. Explosion proof grade 4. Thermal resistance accuracy grade 5. Temperature transmitter (display) accuracy grade 2. Installation and fixing form 7. Material of protective tube 3. Length or insertion depth

·Non fixed device type

model	Graduation	Temperature measurement range ℃	thermal response time	Explosion proof level	specifications
					d	L₁
WRMB-140	N		<90S	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ16	300 350 400 450 500 550 650 900 1150 1650 2150
WRMB-140G		0~800	<24S
WRNB-140	K		<90S
WRNB-140G		0~800	<24S
WREB-140	E	0~600	<90S
WREB-140G			<24S
WRCB-140	T	0~350	<90S
WRCB-140G			<24S
WRFB-140	J	0~500	<90S
WRFB-140G			<24S
WZPB-140	Pt100	-200~500	<120S
WZPB-140G			<24S
WZCB-140	Cu50 Cu100	-50~150	<120S
WZCB-140G			<24S

·Fixed thread type

model	Graduation	Temperature measurement range ℃	thermal response time	Explosion proof level	specifications
					d	L×1
WRMB-240	N	0~800	<90S	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ16	300×150 350×200 400×250 450×300 500×400 650×500 900×750 1150×1000 1650×1500 2150×2000
WRMB-240G			<24S
WRNB-240	K	0~800	<90S
WRNB-240G			<24S
WREB-240	E	0~600	<90S
WREB-240G			<24S
WRCB-240	T	0~350	<90S
WRCB-240G			<24S
WRFB-240	J	0~500	<90S
WRFB-240G			<24S
WZPB-241	Pt100	-200~500	<120S		φ12
WZPB-241G			<24S
WZCB-241	Cu50 Cu100	-50~150	<120S
WZCB-241G			<24S

·Fixed flange type

model	Graduation	Temperature measurement range ℃	thermal response time	Explosion proof level	specifications
					d	L×1
WRMB-440	N	0~800	<90S	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ16	300×150 350×200 400×250 450×300 500×400 650×500 900×750 1150×1000 1650×1500 2150×2000
WRMB-440G			<24S
WRNB-440	K	0~800	<90S
WRNB-440G			<24S
WREB-440	E	0~600	<90S
WREB-440G			<24S
WRCB-440	T	0~350	<90S
WRCB-440G			<24S
WRFB-440	J	0~500	<90S
WRFB-440G			<24S
WZPB-441	Pt100	-200~500	<120S		φ12
WZPB-441G			<24S
WZCB-441	Cu50 Cu100	-50~150	<120S
WZCB-441G			<24S

·Flexible tube connector type

model	Graduation	Temperature measurement range ℃	thread specification	Explosion proof level	specifications
					d	L₁
WRMB-54	N	0~800	M20×1.5	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ3 φ4 φ5 φ6 φ8	250 275 295 350 400 450 550 650 750 900 1150
WRMB-54A			NPT1/2
WRNB-54	K	0~800	M20×1.5
WRNB-54A			NPT1/2
WREB-54	E	0~600	M20×1.5
WREB-54A			NPT1/2
WRCB-54	T	0~350	M20×1.5
WRCB-54A			NPT1/2
WRFB-54	J	0~500	M20×1.5
WRFB-54A			NPT1/2
WZPB-54	Pt100	-200~500	M20×1.5		φ5 φ6 φ8
WZPB-54A			NPT1/2
WZCB-54	Cu50 Cu100	-50~150	M20×1.5
WZCB-54A			NPT1/2

·Straight pipe joint type

model	Graduation	Temperature measurement range ℃	thread specification	Explosion proof level	specifications
					d	L₁
WRMB-74	N	0~800	M20×1.5	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ3 φ4 φ5 φ6 φ8	250 275 295 350 400 450 550 650 750 900 1150
WRMB-74A			NPT1/2
WRNB-74	K	0~800	M20×1.5
WRNB-74A			NPT1/2
WREB-74	E	0~600	M20×1.5
WREB-74A			NPT1/2
WRCB-74	T	0~350	M20×1.5
WRCB-74A			NPT1/2
WRFB-74	J	0~500	M20×1.5
WRFB-74A			NPT1/2
WZPB-74	Pt100	-200~500	M20×1.5		φ5 φ6 φ8
WZPB-74A			NPT1/2
WZCB-74	Cu50 Cu100	-50~150	M20×1.5
WZCB-74A			NPT1/2

·Fixed threaded pipe joint type

model	Graduation	Temperature measurement range ℃	thread specification	Explosion proof level	specifications
					d	L₁
WRMB-84	N	0~800	M20×1.5	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ3 φ4 φ5 φ6 φ8	250 275 295 350 400 450 550 650 750 900 1150
WRMB-84A			NPT1/2
WRNB-84	K	0~800	M20×1.5
WRNB-84A			NPT1/2
WREB-84	E	0~600	M20×1.5
WREB-84A			NPT1/2
WRCB-84	T	0~350	M20×1.5
WRCB-84A			NPT1/2
WRFB-84	J	0~500	M20×1.5
WRFB-84A			NPT1/2
WZPB-84	Pt100	-200~500	M20×1.5		φ5 φ6 φ8
WZPB-84A			NPT1/2
WZCB-84	Cu50 Cu100	-50~150	M20×1.5
WZCB-84A			NPT1/2

·Active threaded pipe joint type

model	Graduation	Temperature measurement range ℃	thread specification	Explosion proof level	specifications
					d	L₁
WRMB-94	N	0~800	M20×1.5	dⅡBT4 dⅡCT5 dⅡCT6 iaⅡCT6	φ3 φ4 φ5 φ6 φ8	250 275 295 350 400 450 550 650 750 900 1150
WRMB-94A			NPT1/2
WRNB-94	K	0~800	M20×1.5
WRNB-94A			NPT1/2
WREB-94	E	0~600	M20×1.5
WREB-94A			NPT1/2
WRCB-94	T	0~350	M20×1.5
WRCB-94A			NPT1/2
WRFB-94	J	0~500	M20×1.5
WRFB-94A			NPT1/2
WZPB-94	Pt100	-200~500	M20×1.5		φ5 φ6 φ8
WZPB-94A			NPT1/2
WZCB-94	Cu50 Cu100	-50~150	M20×1.5
WZCB-94A			NPT1/2