Product Details

K Type Explosion-proof Thermocouple Temperature Sensor

1.Explosion-proof thermocouple sensor type k
2.assembly sheathed stainless steel rtds
3.temp -200C to 1300C
4.pt100,cu50 rtds

Main technical parameters standards

IEC584/IEC751/IEC1515/JB/T5518-91/JB/T7391-94

measuring range and allowance tolerance

rtds

model

graduation number

temperature range °C

accuracy class

Allowable tolerance

WZPB

Pt100

-200 to +500

A B

±(0.15+0.002ItI)

±(0.30+0.005 ItI)

WZCB

Cu50 Cu100

-50 to +100

±(0.30+0.005 ItI)

thermocouples

model	graduation number	tolerance level
		I		II
		tolerance value	temperature range °C	tolerance value	temperature range °C
WRNB	K	±1.5°C	-40-375	±2.5°C	-40-333
WRNB	K	±0.004 ItI	375-1000	0.0075 ItI	333-1200
WRMB	N	±1.5°C	-40-375	±2.5°C	-40-333
WRMB	N	±0.004 ItI	375-1000	0.0075 ItI	333-1200
WREB	E	±1.5°C	-40-375	±1.5°C	-40-333
WREB	E	±0.004 ItI	375-800	0.004 ItI	333-900
WRFB	J	±1.5°C	-40-375	±1.5°C	-40-333
WRFB	J	±0.004 ItI	375-750	0.004 ItI	333-750
WRCB	T	±1.5°C	-40-125	±1°C	-40-133
WRCB	T	±0.004 ItI	125-350	0.0075 ItI	133-1000

Accuracy grade:

temperature transmitter accuracy: 0.1 0.2 0.5
display accuracy grade: indicating analogue type grade 2.5; figures show grade type 0.5.

power supply: 24V.DC ±10%

protection class: IP65

explosion-proof grade:
flameproof type: dIIBT4 dIICT5 dIICT6
intrinsically safe: iaIICT6

insulation resistance: instrument output terminals and the insulation resistance between the shell should be not less than 50.

thermal response time
when the temperature step change occurs, the instrument output signal changes to the current step change equal to 50% of the time required, usually expressed as the temperature transmitter t0.5 step response settling time of less than thermocouple (resistance) thermal response and stable one-fifth of the time t0.5, then use the thermocouple (resistance) thermal response time as thermal response time of the instrument; when the temperature stability of the transmitter step thermal response time of less than thermocouple (resistance) and stable thermal response time t0.5 two points short, the thermal response time with temperature transmitters as a thermal response time of the instrument

Order guidelines

1. Model

2. Graduation mark

3. Installation forms

4. Diameter and material of protective tube

5. Precision grades

6. Using temperature

7. Length and insert depth

8.Types of junction box

For example: sheathed thermocouple, K Type, I level, Fixed thread, Protection tube GH3030,length 450mm,Insert depth300mm,

WRNK-231,K, L=450*300,I L, Protection tube GH3030.

If your order is big enough, we can give you a discount price. Thank you again. Any more questions please feel free to ask me.Wait for your reply.