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Shanghai Automation Instrument Company Jinan Branch

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    576082652@qq.com

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    18521942435

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    No. 70 Lishan Road, Lixia District, Jinan City

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Explosion proof temperature transmitter

NegotiableUpdate on 01/09
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Overview
The SBW series explosion-proof and intrinsically safe temperature transmitter with thermocouple or thermistor is a field installed temperature transmission unit in the DDZ-S series instruments. It integrates a thermocouple (resistor) and a transmitter to directly measure the temperature of liquids, vapors, and vapor media within the range of -200~800 ℃ in various industrial processes. The temperature is converted into a 4-20mADC unified output signal proportional to the temperature of the thermocouple thermistor or the output electrical signal, which is sent to display, record, adjust instruments or computers.
Product Details
SBW series explosion-proof temperature transmitterThe intrinsically safe temperature transmitter with thermocouple or thermistor is a field installed temperature transmission unit in the DDZ-S series instruments. It integrates a thermocouple (resistor) and a transmitter to directly measure the temperature of liquids, vapors, and vapor media within the range of -200~800 ℃ in various industrial processes. The temperature is converted into a 4-20mADC unified output signal proportional to the temperature of the thermocouple thermistor or the output electrical signal, which is sent to display, record, adjust instruments or computers. The explosion-proof performance of explosion-proof and intrinsic safety thermocouple (resistor) temperature transmitters is designed and manufactured in accordance with the national standard for 'Explosion proof Electrical Equipment for Explosive Environments' (GB3836). The thermoelectric characteristics comply with international IEC standards and have been tested and qualified by the National Instrument Explosion proof Safety Supervision Station. It is an ideal integrated product for temperature sensor transmission in explosive environments, which can be used in hazardous areas with flammable gases or vapors of flammable liquids. The intrinsically safe thermocouple (resistor) temperature transmitter must be combined with the associated equipment safety barrier to form an explosion-proof system. The explosion-proof certificate numbers are GYBJ93265, 93266, 97336, 97337. As a new generation temperature transmitter, it can be widely used in various departments such as metallurgy, petroleum, chemical, power, light industry, textile, food, national defense, and scientific research.

The explosion-proof cable distribution parameter control range for intrinsically safe temperature transmitters with thermocouples is: total inductance ≤ 2mH. Total electrical capacity ≤ 0.06uF. At the same time, associated equipment safety barriers are used, with models MTL728, Z928, LB928, and safety barriers. For specific wiring, please refer to the manufacturer's instructions.

Characteristics of explosion-proof intrinsic safety type temperature transmitter with thermocouple (resistor):

The transmitter components are miniaturized and placed inside the junction box of explosion-proof and intrinsically safe thermocouples (resistors) to form an integrated temperature transmitter, used in industrial sites.

As an integrated temperature transmitter, it can directly output 4-20mA signals in industrial sites, which not only saves expensive compensation wires but also improves the anti-interference ability during long-distance signal transmission.

The transmitter components have high precision, low power consumption, wide temperature range, stable and reliable operation, and due to the use of silicone rubber sealing structure, the transmitter is shock resistant, temperature resistant, moisture resistant, and explosion-proof, suitable for installation and use in various harsh on-site environments.

Choose explosion-proof temperature transmitters with thermocouples (resistors) to isolate the input and output terminals, increasing their resistance to mode interference and making them more suitable for computer use.

Main technical specifications of explosion-proof temperature transmitter

Thermal response time: see instruction manual

Accuracy level of platinum thermistor: Class B

Division number: Pt100. (resistance value at 0 ℃)

R=1000.12 Ω (Class B)

Allowable deviation: Δ t (℃) ± (0.30+0.005 ∣ t ∣) (Class B)

Input: Thermocouple: K, E

Thermal resistance: Pt100

Output: Within the range of measurement, output a 4-20mA DC signal that is linear with the input electrical signal of the thermistor or the millivolt signal input by the thermocouple, and linear with the measured temperature of the thermistor or thermocouple.

Basic error: Calculation formula Δ=Δ 1+Δ 2

Allowable deviation of Δ 1 thermocouple (resistance)

Δ 2 transmitter basic error ± 0.5% FS

Transmission method: two-wire system

Transmitter working power supply: voltage ranging from 12V to 35V, rated working voltage of 24V.

Load: The maximum load resistance is calculated according to the following formula

RL(max)=50×(Vmin-12)

At 24V, the load resistance can be selected within the range of 0-600 Ω, with a rated load of 250 Ω. )

a. Environmental temperature: -25 ℃ to 80 ℃ (not higher than 70 ℃ in hazardous areas).

b. Relative humidity: 5% to 95%.

c. Mechanical vibration: f ≤ 55Hz, amplitude<0.5mm

d. There is no medium in the surrounding air that can cause corrosion of the transmitter.

Explosion proof grade:

Explosion proof type: d Ⅱ BT4d Ⅱ BT6 or d Ⅱ CT4d Ⅱ CT6

Intrinsic safety type: ib Ⅱ BT4ia Ⅱ BT4ia Ⅱ CT6 (multi pair), associated equipment models MTL728, Z928, LB928.

Shell protection level: IP65

Allowable deviation of electromotive force

category graduation mark level Operating temperature range ℃ Allowable deviation △ t ℃
thermocouple E 0~600 ± 2.5 ℃ or ± 0.0075t
Nickel chromium copper nickel
thermocouple K 0~800
Nickel chromium copper silicon
Thermocouple WZP Pt100 A -50~500 ±(0.15+0.002t
B ±(0.30+0.005t

Note: ① is the measured temperature (℃) ② The maximum allowable deviation is * A * for special product orders.

Explosion proof grade marking instructions

Specifications Content
d flameproof type
ib Intrinsic safety type
ia Intrinsic safety type
Electrical equipment category: (Factory electrical equipment)
Explosion proof equivalent pole Explosion proof type: B-pole, C-pole
Temperature Class Explosion proof type: T1~T6
Intrinsic safety type: T1~T6

Categories of electrical equipment

Electrical equipment is divided into two categories

Class I - Electrical equipment used underground in coal mines.

Class II - Factory Electrical Equipment

Explosion-proof rating

The explosion-proof level of explosion-proof and intrinsic safety thermocouples is classified into three levels: A, B, and C, based on the maximum safe clearance or minimum ignition current ratio applicable to explosive gas mixtures

Temperature Class

The maximum surface temperature (exposed part) allowed for explosion-proof and intrinsic safety thermocouples (resistors) is divided into six groups, T1 to T6.

Temperature Class Maximum allowable surface temperature ℃
T1 450
T2 300
T3 200
4 135
T5 100
T6 85

Insulation resistance of thermocouple

When the ambient air temperature is between 15-35 ℃; When the corresponding humidity is 45% and the atmospheric pressure is 86-106KPa, for thermocouples with a length exceeding 1m. Its insulation resistance value at room temperature multiplied by its length should not be less than 1000M Ω, and the test voltage is DC 500 ± 50V. The insulation resistance of armored thermocouples (insulated type)

At an ambient temperature of 20 ± 15 ℃ and corresponding humidity not exceeding 80%, the insulation resistance value at room temperature should not be less than 100M Ω, and the test voltage should be DC 100V.

Thermal resistance allows current to pass through

The maximum current measured through a platinum resistor shall not exceed 5mA.

□ Model representation


S DDZ-S series electric unit combination instrument
B Transmission unit
W temperature
Universal Type (None)
Z thermistor
R thermocouple
□ Output nature 2) Output and corresponding temperature
4) The output is linear with the corresponding input signal
□ Sensor 0) Universal type
thermocouple 0) E nickel chromium copper nickel
1) K nickel chromium nickel silicon
2) S Platinum Rhodium 10 Platinum
thermal resistor 1)Cu50
2)Cu100
3)Pt100
□ Circuit category 7) Isolation type (with temperature measuring element)
8) Non isolated type (with temperature measuring element)
□ Device category 0) Type
1) Intelligent type
2) Digital display type
3) Pointer type
4) Intelligent digital display type
5) Intelligent pointer type
6) Equipped with communication protocol
□ Installation fixed form 2) Fixed thread
4) Fixed flange
6) Fixed thread conical protective tube
8) Internal thread fixation
9) Hot sleeve protective tube
□ Form of junction box 4) Explosion proof type
□ Design number S) Introducing platinum resistors
0) Thermocouple
1) Insulated (armored)
2) Shell type (armored)
Number of components 3) Triple Pair
□ Additional explanation K) Armored type
□ Environmental characteristics d) Explosion proof type
i) Intrinsic safety type

□ Type and specification

Specification Table for Explosion proof and Intrinsic Safety Temperature Transmitters with Thermocouples

model graduation mark measurement range structural characteristics Protective tube material Specifications Thermal response time Nominal Pressure Explosion-proof rating
(℃) Factory L (mm) Insertion depth ò (mm) (S)T0.5 (MPa)
SBWR-2280/240d K 0-400 M27 ´ 2 fixed thread 1Cr18Ni9Ti or 0Cr18Nni12M02Ti T4L=ò+150 T6 L=ò+250 150 £90 10 BIIBT4 or
SBWR-2280/240i 0-600
SBWR-4280/240d 0-800 200 BIICT4 or ibIIBT4
SBWR-4280/240i 200-500
SBWR-4270/240d 400-800 250
SBWR-2180/240d E 0-400/0-500 1500
SBWR-2180/240i 0-600
SBWR-4180/240d 100-300 2000
SBWR-4180/240i 200-400
SBWR-4170/240d 200-600
SBWR-2280/440d K 0-400 Fixed flange £90 6.4
SBWR-2280/440i 0-600
SBWR-4280/440d 0-800
SBWR-4280/440i 200-500
SBWR-4270/440d 400-800
SBWR-2180/440d E 0-400
SBWR-2180/440i 0-500
SBWR-4180/440d 0-600
SBWR-4180/440i 100-300
SBWR-4170/440d 200-400
SBWR-4170/640d 200-600
SBWR-2180/640d
SBWR-4280/640d
SBWR-4270/640d k 0-400/0-600 taper 150 30 BII BT4 or bIICT6
SBWR-2280/640d 200-500 protective tube 200
SBWR-4280/640d 400-800 M33´2 250

Note: The longest thermal resistance of explosion-proof armor shall not exceed 1000mm

□ Structural principle

Explosion proof type and intrinsic safety type temperature transmitters with thermocouples (resistors) adopt an explosion-proof structure, so when the explosive mixed gas inside the shell explodes, the shell will not be damaged, and the resulting heat energy cannot be smoothly diffused and transmitted outward. It can only be slowly transmitted to the outside of the shell through small gaps with sufficient connection length on the shell. At this time, the instantaneous temperature transmitted to the outside of the shell is not enough to ignite the explosive gas outside, that is, it will not cause an explosion. The explosion-proof category of explosion-proof type temperature transmitters with thermocouples (resistors) is dIIBT, Diibt6, or dIICT4, and the explosion-proof category of intrinsic safety type transmitters is ibIIBT4, ibIIBT4 (multi pair). Under strict adherence to usage rules, it has reliable explosion-proof performance

□ Install fixed position

The installation of fixed positions can be divided into three forms: fixed threads, tapered fixed threads, and fixed flanges. The structural dimensions are shown in the table.

Straight protective tube fixing thread Used to protect the diameter of the tube (d) M h s D0 Flow velocity m Maximum operating pressure (MPa)
16 M27´2 32 32 40 10
Conical protective tube fixing thread M33´2 33 36 48 80 30
Fixed flange 16 D2 D1 D0 d0 H h 6.4
95 65 45 14 15 2

□ Explosion proof and intrinsically safe temperature transmitter with thermocouple (resistor) external structure diagram


model
SBWR-2180/240d. 240i
SBWR-4180/240d. 240i
SBWR-4170/240d
SBWR-2280/240d. 240i
SBWR-4280/240d. 240i
SBWR-4270/240d
SBWZ-2480/24sd. (24si)
SBWZ-2470/24sd
SBWZ-4480/24sd. (24si)
SBWZ-4470/24sd.
SBWR-2180/440d. (440i)
SBWR-4180/440d. (440i)
SBWR-4170/440d
SBWR-2280/440d. (440i)
SBWR-4280/440d. (440i)
SBWR-4270/440d
SBWZ-2480/44sd. (44si)
SBWZ-2470/44sd
SBWZ-4480/44sd. (44si)
SBWZ-4470/44sd.
SBWR-2180/240kd. (240ki)
SBWR-4180/240kd. (240ki)
SBWR-4170/240kd
SBWR-2280/240kd. (240ki)
SBWR-4280/240kd. (240ki)
SBWR-4270/240kd
SBWZ-2480/24skd. (24ski)
SBWZ-2470/24skd
SBWZ-4480/24skd. (24ski)
SBWZ-4470/24skd.
SBWR-2180/440kd. (440ki)
SBWR-4180/440kd. (440ki)
SBWR-4170/440kd
SBWR-2280/440kd. (440ki)
SBWR-4280/440kd. (440ki)
SBWR-4270/440kd
SBWZ-2480/44skd. (44ski)
SBWZ-2470/44skd
SBWZ-4480/44skd. (44ski)
SBWZ-4470/44skd.
SBWR-4170/64d
SBWR-2180/64d
SBWR-4180/64d
SBWR-4280/64d
SBWR-2280/64d
SBWR-4270/64d
SBWZ-2470/64d
SBWZ-2480/64d
SBWZ-4480/64d
SBWR-2280/8413kd. (8413ki)
SBWR-4280/8413kd. (8413ki)
SBWR-4270/8413kd. (8413ki)
SBWR-2180/8413kd. (8413ki)
SBWR-4180/8413kd. (8413ki)
SBWR-4170/8413kd. (8413ki)

Note: (1) The flange is a flat flange corresponding to the instrument industry standard ZBY02481 and the Ministry of Chemical Industry standard ZB81-59

(2) The parentheses (240i), (24ki), (240ki), and (44ski) are all intrinsic safety specifications,

For example: SBWZ-4480/44ski

□ Explosion proof and intrinsically safe intelligent temperature transmitter with thermocouple (resistor) external structure legend

model
SBWR-2181/440d
SBWR-2181/440i
SBWR-4181/440d
SBWR-4181/440i
SBWR-2281/440d
SBWR-2281/440i
SBWR-4281/440d
SBWR-4281/440i
SBWZ-2481/44sd
SBWZ-2481/44si
SBWZ-4481/44sd
SBWZ-4481/44si
SBWR-2181/240d
SBWR-2181/240i
SBWR-4181/240d
SBWR-4181/240i
SBWR-2281/240d
SBWR-2281/240i
SBWR-4281/240d
SBWR-4281/240i
SBWZ-2481/24sd
SBWZ-2481/24si
SBWZ-4481/24sd
SBWZ-4481/24si
SBWR-2181/440kd
SBWR-2181/440ki
SBWR-4181/440kd
SBWR-4181/440ki
SBWR-2281/440ki
SBWR-2281/440kd
SBWR-4281/440kd
SBWR-4281/440ki
SBWZ-2481/44skd
SBWZ-2481/44ski
SBWZ-4481/44skd
SBWZ-4481/44ski
SBWR-2181/240kd
SBWR-2181/240ki
SBWR-4181/240kd
SBWR-4181/240ki
SBWR-2281/240kd
SBWR-2281/240ki
SBWR-4281/240kd
SBWR-4281/240ki
SBWZ-2481/24skd
SBWZ-2481/24ski
SBWZ-4481/24skd
SBWZ-4481/24ski

□ Explosion proof type, intrinsic safety type with thermocouple (resistor) intelligent digital temperature transmitter external structure legend


model
SBWR-2184/440d
SBWR-2184/440i
SBWR-4184/440d
SBWR-4184/440i
SBWR-2284/440d
SBWR-2284/440i
SBWR-4284/440d
SBWR-4284/440i
SBWZ-2484/44sd
SBWZ-2484/44si
SBWZ-4484/44sd
SBWZ-4484/44si
SBWR-2184/240d
SBWR-2184/240i
SBWR-4184/240d
SBWR-4184/240i
SBWR-2284/240d
SBWR-2284/240i
SBWR-4284/240d
SBWR-4284/240i
SBWZ-2484/24sd
SBWZ-2484/24si
SBWZ-4484/24sd
SBWZ-4484/24si
SBWR-2184/440kd
SBWR-2184/440ki
SBWR-4184/440kd
SBWR-4184/440ki
SBWR-2284/440kd
SBWR-2284/440ki
SBWR-4284/440kd
SBWR-4284/440ki
SBWZ-2484/44skd
SBWZ-2484/44ski
SBWZ-4484/44skd
SBWZ-4484/44ski
SBWR-2184/240kd
SBWR-2184/240ki
SBWR-4184/240kd
SBWR-4184/240ki
SBWR-2284/240kd
SBWR-2284/240ki
SBWR-4284/240kd
SBWR-4284/240ki
SBWZ-2484/24skd
SBWZ-2484/24ski
SBWZ-4484/24skd
SBWZ-4484/24ski

□ Ordering Notice

When placing an order, please specify

1. Product name and model

2. Explosion proof level

3. Structural form

4. Division number

5. Measurement range

6. The total length and insertion depth (for multiple pairs) must specify the length of each component

7. Name and brand of protective tube material

8. Quantity

Special specification orders must be determined through mutual consultation between both parties

• Intrinsic safety temperature transmitter associated equipment models: MTL728, Z928, LB928

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