Product Description:
Although they are contact temperature measurement instruments, but their temperature measurement range is different.
Thermocouple used in higher temperature environment, because they are in the middle, low temperature zone when the output thermal potential is very small, when the potential is small, the anti-interference measures and the secondary table and the requirements are very high, otherwise the measurement is not allowed, and also, in the lower temperature region, the cold end of the temperature changes and changes in the ambient temperature caused by the relative error is prominent, not easy to get the full compensation.
At this point in the low temperature, the general use of RTD temperature measurement range of 200 ~ 500 ºC, and even lower temperatures can be measured (such as carbon resistance can be measured to the low temperature of about 1K). Now the normal use of platinum RTD Pt100. (There are also Pt50, copper resistance is also used in industry, but the temperature range is smaller, in a 50 ~ ~ 150 ºC between. In some special occasions and indium resistance, manganese resistance, etc.).
Product Parameters:
| characterization |
Input signal/display range/output signal can be adjusted without switching error. |
| Accuracy |
0.15% FS +1C. |
| Display Range |
High brightness red LED: 0.8" 4-digit 0~9999 Counts. |
| Cold Point Compensation |
<=0.3°C/°C. Within 0~40°C. |
| Wire break protection |
Display OPEN when detecting a broken thermocouple. |
| Linearity correction |
Digital linear correction, with digital °C/°F switching function. |
| Input and output protection |
Input/output, open or short circuit without damage. |
| Response speed |
<=1sec |
| Zero Adjustment |
Built-in, with zero offset function. |
| Analog output capability |
Current output:<=500Ω at 20mA output, Voltage output:10mA Maximum. |
| Digital output characteristics |
Adopt RS-485 output, transmission speed 1200,2400,4800,9600,19200,38400Baud Rate can be selected by yourself. |
| Setting function |
Alarm contact setting: Hi or Lo can be selected by yourself, and each group of alarm contacts will have an LED light when it is in action. |
| Setting range |
-19999~19999 Counts adjustable. |
| Inoperative band |
0~9999 Counts adjustable. |
| Delay time |
0~99 seconds adjustable. |
| Contact capacity |
SPDT AC 120V 5A,250V 3A DC24V 3A.4 Set and 5 Set 120V 3A, 250V 3A, DC24V 3A. |
| Voltage resistance |
AC 2kV / 1 minute between input/power supply/enclosure, AC 1.6KV/1 minute between input/output/power supply/enclosure. |
| Long-term stability |
Annual drift<=0.2%. |
| Temperature Coefficient |
<=80ppm/°CFrom0~60°C;<=50ppm/25°C at 5°C. |
| Environment |
-10°C~+65°C 20~90% RH without condensation. |
| Storage conditions |
-20°C~+75°C 20~90% RH without condensation. |
| Power supply |
AC/DC85~265V, 7VA. DC24V+15%, 7W. |
| Shell material |
Non-flammable ABS injection molding. |
| Dimensions/Mounting |
Fixed disk, 96*48*77mm (depth). Opening size: 92+0.8 x 45+0.8 mm. |
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