WRN-230D and WRN-430D multi-point thermometers (multi-point resistance thermometers, multi-point thermocouples) are suitable for production sites where temperature gradients are not significant and multiple positions or locations need to be measured simultaneously. As a temperature sensor, multi-point thermometers are usually used in conjunction with display regulators, recorders, and electronic regulators to directly measure the temperature of liquid, vapor, gas media, and solid surfaces in various production processes ranging from 0 ℃ to 1300 ℃. Widely used in large fertilizer synthesis towers, storage tanks, and other devices.
Main technical parameters of WRN-230D and WRN-430D multi-point thermometers
Electrical export: M27X2, NPT3/4
Hot sound time: ≤ 8S
Wire diameter: Φ 3
Protection level: IP65
3. Model and specifications
| model |
Dividing number |
Temperature measurement range ℃ |
Temperature measurement points |
protective tube material |
| WRN-230D |
K |
0-1000 |
2-12 |
GH3030 |
| 0-827 |
1Ci18Ni9Ni |
| WRE-230D |
E |
0-1122 |
1Ci18Ni9Ni |
| WRN-430D |
K |
0-1000 |
GH3030 |
| 0-827 |
1Ci18Ni9Ni |
| WRE-430D |
E |
0-1122 |
Ci18Ni9Ni |
1) Order thermometer level I according to the agreement;
2) Order the remaining materials of the multi-point thermometer protection tube according to the agreement;
3) Users of multi-point thermometer external protective tubes should bring their own
4. Installation fixed form
Fixed thread
| Temperature points |
M |
D |
H |
h |
SW |
d |
| 2—6 |
M27x2 |
¢40 |
twenty-eight |
five |
thirty-two |
¢20 |
| 7—12 |
M33x2 |
¢48 |
thirty-three |
five |
thirty-six |
¢34 |
Fixed flange
| Temperature measurement points |
D |
D1 |
D2 |
H |
do |
d |
| 2—6 |
¢105 |
¢75 |
— |
five |
thirty-two |
¢20 |
| 7—12 |
¢115 |
¢85 |
— |
five |
thirty-six |
¢34 |
5. Selection Notice
1) Model number
2) Dividing number
3) Accuracy level
4) Number of thermometer points
5) Installation fixed form
6) Material of protective tube
7) Length or insertion depth
Example: Multi point thermometer, K-type, 3 points. L grade, fixed thread M27X2, L1=1200, L2=1500, L3=2000, WRN-220D3I grade L1=1200, L2=1500, L3=2000, thread M27x2