ZRN-WRB integrated temperature transmitter

ZRN-WRB integrated temperature transmitter

Product description:

ZRN-WRB series Integrated Temperature Transmitter By the temperature probe, temperature conversion module, the protective housing of three parts. Temperature probe PT1000 platinum resistance using a high-impedance type, filtering through the regulator internal conversion module, operational amplifier, nonlinear correction, V / I converter, constant current and After reverse power protection circuit such as processing, is converted into a linear relationship with the temperature of the electrical output, the products are widely used in process temperature petrochemical, power, metallurgy, medicine, food and other industrial areas of control with the composition of the instrument or PLC Distributed Computer Control system.

Technical Parameters
1. Platinum Resistance: Pt1000
2. Temperature range: (-50 ~ 400) ℃
3. Common Accuracy: 0.5%, 0.2%, 0.1%
4. Output: 4 ~ 20mA, 0 ~ 5V, etc.
5. atmospheric pressure, there is no pressure for the conditions, please indicate

Physical map
Thread and flange specifications
No connection
Threaded connections, no cold end
Common Thread Size: M
27 = M27 * 2 specified
Standard Products:
C = L + 150
1. Screw the top tight
2. The locking sleeve
Threaded connections, cold end
Threaded sleeve connection
Events flange connection
Flange diameter (mm)
Apply pressure
Flange connection
Flange diameter (mm)
¢95, ¢105
¢ 115 three sizes
Apply pressure

selected type table
Platinum thermal resistance model
1 = 2 = -50 to 100 -50 to 200 -50 to 250 designated 3 =
Temperature range (℃)
5=0.5% 2=0.2% 1=0.1%
Sensor accuracy
A = 4 ~ 20mA B = 0 ~ 5V designated
output signal
100=100 150=150 350=350
550=550 600=600
The total length of the protective tube (mm)
4 = 48 = 812 = 12 16 = 16 designated
Protection tube diameter (mm)
1 = SUS321 4 = SUS304 6 = SUS316 specified
Material threaded portion
A = No Connection
B = threaded connections, no cold end
C = threaded connection, cold end
D = threaded sleeve connection
E = connection flanges
F = fixed flange connection
See thread and flange specification table
Process connection type
1 = BOP formula
2 = waterproof specify
Junction Box Type
0 = no, do not fill
2 = Armour type
3 = embalmed
special request
Remark : For user-specified parameters required, directly to the number or text can be marked out.
Selection example : ZRN-WRB -T2- P5- OA- C350 / D8 / S4 -NCM16 - G2
Explanation : Temperature range -50 ~ 200 ℃, accuracy 0.5%, protection tube diameter 8mm, output 4-20mA, protection tube total length 350mm.
Thread size M16 * 1.5 junction box is waterproof formula

Output 4-20mA, 1-5V anti-jamming;
Saving temperature transmitter compensation wire and installation costs;
Safe, reliable, long life;
Automatic cold junction temperature compensation, nonlinear correction circuit;
working principle
TC (resistance) in working condition measured thermoelectric power (resistance) changes.
After the bridge temperature transmitter unbalanced signal after amplification converted into 4-20
mA electrical signal to the working instruments, working instrument will show the corresponding temperature value.
Proof thermocouple (resistance) the use of space explosion principle, when the cavity explosion.
Flame through the gap and cooling joints, so after the explosion of flame and temperature not pass cavity
In addition, in order to carry out temperature thermocouple (resistance) produced by thermoelectric power (resistance value) through
Bridge temperature transmitter unbalanced signal after amplification converted into a 4-20mA
DC signal to the workers instruments, working instrument shows the corresponding temperature value.

WB integrated temperature transmitter is a contact site with instruments to measure temperature, usually their corresponding secondary instrument or computer acquisition measurement system supporting the use, can accurately measure the temperature of the production process in a variety of media work or objects (using the range of -200 ℃ ~ 1600 ℃).
WB integrated temperature transmitter is waterproof or explosion-proof junction box assembly temperature sensor mounted transmitter amplification module, and the sensor is connected to form an integrated, output standard 4 ~ 20mA DC (two-wire) .JWB explosion Integration temperature transmitters, while meeting the flameproof d II BT4 and intrinsically safe explosion-proof performance iaII CT5 of (intrinsically safe barrier must be fitted).
This series of products GB reference to the relevant standards and regulations related content JJG issued by the State, taking and related documents in accordance with IEC standards, and with reference to the advantages of similar products at home and abroad to optimize the design of the entire product more reliable and accurate, ideal for a variety environmental site temperature measurement.

1, the basic structure: Sensor + (connecting device + junction box + protective tube) + transmitter module
2, the length of representation: L = total length * protection tube insertion length (unit: mm, sealing surface following is inserted length)
3, to determine the length of the cold end: Because determining the overall length of the protective tube and inserted length, will determine the length of the protective tube of non-insertion portion, namely the length of the cold end of the cold end length standard 150mm; the temperature below 125 ℃. measurement, see the impact of temperature on the cold side of the situation can be appropriately extended, such as 250mm or 300mm.
4, the length of the cold end uses:
a, transmission module operating temperature of -10 ~ 75 ℃, through the length of the cold end of the temperature field to conduction and radiation to reduce the temperature between the junction box to protect the circuit transmission module.
b, if you must have a thermocouple sensor cold end length.
c, to protect the terminals and cables.
Output: Two-wire 4 ~ 20mADC
Power supply: 24VDC (12V ~ 36VDC)
Accuracy: A grade of 0.2%; grade B 0.5%
Load: ≥650Ω (24VDC)
Output protection: open sensor output ≤25mA, when sensor short circuit output ≤3.8mA
Range: selected according to usage requirements and definitions refer to 57 *.
Installation: selected according to usage requirements and definitions refer to page 52-55 *.
Functional structure: selected according to usage requirements and definitions refer to page 56-57 *.
Protection tube length: selected according to usage requirements and definitions refer to 51 *.
(Note: Content plus an asterisk must be clearly when ordering.)

The main technical parameters
Product performance standards
JB / T5518-91
JB / T7391-94
Measuring range and tolerance
1) Thermal resistance temperature measurement range and tolerance
2) thermocouple range and tolerance