The Gap Sensor Probe GJCT-15-E is used in conjunction with the Gap transmitter GJCF-15 and power supply GJCD-15.
The GJCF-15 Gap transmitter for air preheaters is a device used to measure the gap of boiler air preheaters. The design principle is to calculate the size of the gap by measuring the pressure and temperature inside the preheater.
Specifically, the transmitter consists of two sensors: a pressure sensor and a temperature sensor. These sensors are installed at the inlet and outlet of the preheater to measure the pressure and temperature at the inlet and outlet. In addition, the transmitter also includes a microprocessor to calculate the gap size and output the corresponding signal.
During operation, air flows through pressure and temperature sensors through the preheater. These sensors transmit the measured data to the microprocessor, which calculates the size of the gap by comparing the differences in inlet and outlet pressure and temperature. The calculated gap size will be output in the form of an electrical signal for the monitoring system to record and process.
Performance Index
| measure scope | 0-10mm |
| resolution | ≥0.1mm |
| frequency response | ≥50Hz |
| temperature resistance for sensor | ≥420℃ |
| temperature resistance for transmitter | ≥65℃ |
| output signal | output signal can be chosen from 0-10mA or 4-20mA |
| Maintenance cycle of measuring devices | Two years (without cooling air device) |
| Four years (installation of cooling air device) |
Supporting dedicated power supply
A high-performance analog power supply GJCD-15 equipped with a high-temperature eddy current displacement detection device.
| Spec. | ±12VDC,four-way |
| rated current | 0.5A |
| precision | ±5％ |
| ripple coefficient | 0.5% |
Gap Sensor Probe GJCT-15-E Show
