HCDAR-66 PTFE Antenna Level Meter

A customer, a major water engineering contractor in the Middle East, purchased 500 explosion-proof radar level transmitters (model RL-****) at one time for storage tank level monitoring. After the goods arrived at the port and were installed and commissioned, the customer reported that about 120 units experienced signal drift in high-temperature and high-humidity environments, with empty-tank readings deviating by more than ±15mm, exceeding the contractually agreed accuracy range of ±5mm. The customer provided on-site test records, serial numbers of faulty devices (first 6 digits uniformly ***), and video evidence, demanding a full return and replacement of the affected batch, as well as coverage of the resulting dismantling, reinstallation, and sea freight costs.

1. We immediately established a dedicated after-sales team, connected with the customer via video to confirm the fault phenomenon, and requested the customer to return 6 faulty units for failure analysis; 2. Laboratory testing confirmed that the sealant on a certain batch of circuit boards degraded under high temperatures, causing abnormal signal processing, which was identified as a batch-level material issue; 3. We agreed to fully replace all remaining 480 units in stock and the 120 installed faulty units. The new batch uses improved sealing technology and adds 100% high-temperature aging testing; 4. We will bear the return shipping costs, air freight for new units, on-site labor costs for customer disassembly and installation, and additionally compensate the customer for part of the project penalties incurred due to schedule delays; 5. New units will be shipped within 10 days from the customer's confirmation of the replacement plan.

A major oil and gas engineering contractor in the Middle East (customer name: ***) purchased 500 radar level gauges and 200 ultrasonic level gauges at one time for multiple tank farm renovation projects. After the goods arrived at the port, the customer's on-site engineers reported issues such as large measurement fluctuations and communication failures on multiple instruments after installation, with a preliminary abnormal rate exceeding 15%. The customer's technical team had never used this brand of instruments in bulk before, and the project schedule was tight, requiring urgent mastery of correct installation, commissioning, and troubleshooting methods, otherwise they would face huge schedule penalty fees.

Our company promptly activated the batch after-sales training service plan, dispatching 2 senior application engineers to the customer's site to conduct a 5-day customized training and hands-on guidance program. The training content includes: 1) Installation specifications for radar and ultrasonic level meters, antenna/probe selection, and anti-interference grounding requirements; 2) On-site diagnosis of all 75 installed problematic instruments one by one, with live demonstrations of parameter setting, echo curve analysis, and false echo suppression; 3) Organizing 30 on-site customer technicians into groups for hands-on drills, including HART/RS485 communication debugging, upper computer configuration and joint commissioning, and common fault simulation and troubleshooting; 4) Providing bilingual (Chinese/English) copies of the "Batch Instrument Quick Debugging Manual" and "Fault Code Quick Reference Table", and establishing a remote technical support group for continuous online Q&A after the training concludes.

A Middle Eastern customer purchased 200 explosion-proof radar level transmitters through our company. After 6 months of operation, approximately 35% of the devices gradually developed issues such as significant signal fluctuation, no echo, or erratic display values. The customer reported on-site that these transmitters are mainly used for level monitoring in seawater desalination pre-treatment tanks and brine storage tanks, where humidity is high and salt spray corrosion is severe. Some tanks also experience steam condensation and foam interference. Due to the large number of affected devices, the high failure rate, and the fact that the customer's project is in the acceptance phase, all troubleshooting and repairs must be completed within 4 weeks, or the customer will face substantial penalty fines for breach of contract.

Our company has urgently launched a batch repair service plan: 1. Arrange after-sales engineers to remotely retrieve parameter records and logs of faulty equipment, preliminarily determining that the problem is concentrated in two batches of antenna seals aging and PCB boards affected by moisture causing signal processing anomalies; 2. Dispatch a 4-person repair team carrying spare parts to the customer site, diagnose all 200 devices one by one within 2 weeks, disassemble and repair 58 units, replace sealing rings and circuit boards, and for another 12 units with condensation water accumulation due to installation position, adjust installation angle on site and add rain covers; 3. Perform preventive maintenance on the remaining 130 devices, recalibrate and upgrade firmware; 4. After repair completion, build a simulated working condition test platform at the customer site, conduct 48-hour continuous operation verification on 30% batch sampling, and issue bilingual Chinese-English repair reports and quality inspection certificates.

The customer is a large-scale seawater desalination and municipal water supply project contractor in the Middle East. They purchased 200 radar level gauges and 50 pressure transmitters from us in one batch for level monitoring in multiple reservoirs and pump stations. During installation and commissioning after delivery, the customer reported that about 37 instruments experienced level jumping, echo loss, or communication interruption with the PLC. On-site engineers could not resolve the issues and requested urgent remote support. Due to the tight project schedule and the large number of devices involved, the customer is anxious and needs quick problem identification and restoration of all instruments to normal operation.

Our company immediately formed a dedicated technical support team, remotely accessing the customer's SCADA system via VPN, while retrieving equipment logs and radar echo curves. After analyzing one by one, it was found that about 20 units had installation positions too close to the water inlet pipe, causing vortex and foam interference; 12 units had false echoes generated by the agitator inside the tank; 5 units had RS485 communication address conflicts. Our side remotely guided the customer to adjust installation angles and optimize radar echo suppression parameters, reassign communication addresses, and provided detailed bilingual (Chinese/English) debugging manuals and video guidance in batches, with 48 hours of continuous online accompaniment for debugging.