CALEX Repair Services India
CALEX Electronics is a UK-based manufacturer specializing in precision temperature controllers, process instrumentation, and industrial thermal management systems. With over four decades of expertise, CALEX serves global manufacturing, pharmaceutical, food processing, and chemical industries. In India, CALEX equipment is widely deployed across automotive, textiles, plastics processing, and pharmaceutical manufacturing facilities where precise temperature regulation is mission-critical.
CALEX Electronics is a UK-based manufacturer specializing in precision temperature controllers, process instrumentation, and industrial thermal management systems. With over four decades of expertise, CALEX serves global manufacturing, pharmaceutical, food processing, and chemical industries. In India, CALEX equipment is widely deployed across automotive, textiles, plastics processing, and pharmaceutical manufacturing facilities where precise temperature regulation is mission-critical.
Synchronics Electronics has established deep expertise in CALEX controller repair and calibration since our founding in 1994. We service CALEX temperature controllers, data loggers, process instrumentation, and integrated thermal management systems used across Indian industrial plants. Our 180+ engineers understand CALEX firmware, sensor interfacing, and precision calibration standards — ensuring your temperature-sensitive processes maintain compliance and uptime.
CALEX thermal control repair certified by Synchronics across all major Indian industrial hubs.
CALEX Product Lines We Repair
Our engineers are trained on the full CALEX product range. Below are the major product families we service.
Pyro Temperature Controllers
CALEX Pyro series single and dual-loop controllers for furnace, oven, and process heating control. Common faults include sensor input errors, relay failures, and PID tuning drift affecting temperature stability in industrial kilns and heat treatment equipment.
Firewire Temperature Data Loggers
CALEX Firewire USB-enabled data loggers for temperature monitoring and validation across pharma, food, and cold-chain logistics. Repair issues include USB interface faults, memory corruption, and sensor calibration drift requiring recalibration against reference standards.
Infra-Red Pyrometers
CALEX non-contact infrared temperature sensors for high-temperature process monitoring in steel mills, glass plants, and metal foundries. Common repairs include optical lens cleaning, emissivity calibration errors, and 4-20mA output signal conditioning.
Process Instrumentation Modules
CALEX modular I/O and signal conditioning units for multi-channel thermocouple and resistance temperature detector (RTD) conversion. Repair focus includes cold-junction compensation faults, linearization errors, and isolated analog output failures in distributed control systems.
Comms Industrial Wireless Transmitters
CALEX wireless temperature and humidity transmitters for remote monitoring in confined spaces, rotating equipment, and hazardous areas. Repairs address battery management, radio frequency module faults, and sensor signal loss in industrial IoT deployments.
DIN Rail Digital Indicators
CALEX compact DIN-mounted digital panel meters for direct thermocouple and RTD input in control cabinets. Common issues include display segment failure, input linearization faults, and relay output stiction affecting process shutdown logic.
Why Choose Synchronics for CALEX Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on CALEX equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common CALEX Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in CALEX equipment arriving at our workshop.
- ✓Thermocouple cold-junction compensation error — CALEX Pyro and converter modules experience cold-junction reference drift due to internal sensor aging or PCB thermal stress, causing 5-15 degree Celsius reading errors in furnace controllers used across Indian steel and automotive heat-treatment plants.
- ✓Infrared pyrometer optical window fouling and low signal — CALEX Cyclops and Raytemp pyrometers accumulate dust, metal fumes, and thermal gradient artifacts on lens surfaces in high-temperature foundry and glass-melting environments across India, reducing signal-to-noise ratio and triggering false low-temperature alarms.
- ✓4-20mA output signal intermittent or stuck at fault level — CALEX process instrumentation and data logger output stages fail due to broken isolation transformers, stuck analog multiplexer relays, or corrupted firmware current-loop driver code — common in high-vibration textile mills and petrochemical units where CALEX monitors critical process temperatures.
- ✓USB interface timeout and data logger memory access failure — CALEX Firewire data loggers experience USB port micro-fractures or corrupted firmware boot sector after extended thermal cycling in pharmaceutical cold-storage environments, blocking data download and validation workflows critical to GxP compliance.
- ✓PID control loop oscillation and sluggish temperature response — CALEX Pyro controller tuning parameters drift or become unstable due to aging proportional band resistors, sensor lag changes, or firmware revision incompatibility — affecting oven ramp rates in Indian plastics processing and pharmaceutical drying operations.
- ✓Wireless transmitter dropouts and range reduction — CALEX Comms TX series transmitters lose RF signal strength due to corroded antenna, depleted batteries, or interference from adjacent industrial WiFi networks in crowded Indian manufacturing zones with multiple temperature-monitoring systems on same frequency band.
How We Repair Your CALEX Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using CALEX Equipment
We serve plant maintenance teams across all major industries where CALEX automation is deployed.
Frequently Asked Questions — CALEX Repairs
Do you repair CALEX equipment anywhere in India?+
Yes. Synchronics repairs the full CALEX product range — temperature controllers, infrared pyrometers, data loggers, process instrumentation, and wireless transmitters. We offer PAN-India door pickup and drop from major metros: Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and beyond. All repairs completed at our Vadodara, Gujarat headquarters with final validation before return.
What is CALEX thermocouple sensor input error E3 or E4 on Pyro controllers?+
Error E3 indicates open thermocouple circuit (broken sensor wire or connector); E4 indicates out-of-range sensor voltage suggesting reversed thermocouple polarity or cold-junction failure. Synchronics diagnoses via signal injection and bench testing, replaces failed thermocouple breakout boards or cold-junction reference modules, and recalibrates before return. We supply certified replacement CALEX sensor connectors if customer's original wiring is compromised.
Can you recover data from a corrupted CALEX Firewire data logger?+
Yes, in most cases. Synchronics uses JTAG and EEPROM readers to extract raw data from flash memory before firmware recovery or replacement. If memory sectors are physically damaged, we document loss and restore from backup if available. Full memory test and validation performed post-repair to prevent recurrence in pharmaceutical or food safety environments where audit trails are mandatory.
How often should CALEX infrared pyrometers be recalibrated?+
CALEX recommends annual calibration in industrial environments; 6-monthly in high-temperature furnace or glass-melt settings. Synchronics offers CALEX pyrometer calibration service using blackbody reference sources traceable to NIST standards, with ISO 17025 certificates. On-site field calibration also available for large foundry or mill customers across India unable to ship equipment.
What is the typical turnaround time for CALEX controller repair at Synchronics?+
Standard CALEX repair: 5-7 working days (diagnostic, parts, test, calibration, validation). Emergency express repairs: 2-3 days available for mission-critical temperature control in pharma or food processing. Shuttle service available from customer facility to Vadodara with insured pick-up. Rush fees apply. Contact our CALEX repair coordinator for availability.
How do I send my CALEX unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a CALEX drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on CALEX repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your CALEX unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
CALEX Repair Catalog
No products found for CALEX
Don't See Your CALEX Model Listed?
We repair the full range of CALEX industrial electronics — even if the specific model is not yet in our catalog. Send us the unit details and we'll confirm repairability within 24 hours.
Free evaluation • 6-month warranty • PAN India pickup
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Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service