HERSEY Repair Services India
Hersey Instruments is a US-based manufacturer specializing in precision flow measurement, pressure monitoring, and process control instrumentation since 1948. Known for durable mechanical and electronic flow meters, pressure switches, and transmitters used across chemical, pharmaceutical, oil and gas, and water treatment industries globally. Hersey equipment is widely deployed in Indian refineries, petrochemical plants, and municipal water systems for critical process monitoring.
Hersey Instruments is a US-based manufacturer specializing in precision flow measurement, pressure monitoring, and process control instrumentation since 1948. Known for durable mechanical and electronic flow meters, pressure switches, and transmitters used across chemical, pharmaceutical, oil and gas, and water treatment industries globally. Hersey equipment is widely deployed in Indian refineries, petrochemical plants, and municipal water systems for critical process monitoring.
Synchronics Electronics repairs the complete Hersey instrumentation portfolio — flow meters, pressure transmitters, level switches, and control electronics. Our 180+ engineers have extensive experience diagnosing Hersey sensor drift, transmitter calibration failures, and switch malfunction issues. We maintain genuine spare components and provide on-site commissioning support to keep your Hersey instruments operating at specification across Indian manufacturing facilities.
Expert Hersey flow meter and transmitter repair across India since 1994.
HERSEY Product Lines We Repair
Our engineers are trained on the full HERSEY product range. Below are the major product families we service.
Hersey Turbine Flow Meters
Positive displacement and turbine-type flow measurement instruments for liquids and gases. Common issues include rotor blade wear, bearing degradation, electronic pickup coil failure, and signal dropout under low-flow conditions.
Hersey Pressure Switches and Transmitters
Mechanical and electronic pressure monitoring devices for process control and safety interlocks. Typical failures involve diaphragm rupture, electrical contact corrosion, 4-20mA transmitter nonlinearity, and hysteresis drift in switch setpoints.
Hersey Level Switches and Indicators
Float-operated and electrode-type level detection for tanks and vessels. Repair challenges include float stiction, electrode fouling in conductive liquids, relay contact failure, and false alarm triggering due to vibration sensitivity.
Hersey Flow Control Valves
Proportional and solenoid-actuated control valves for precise flow regulation. Common defects include solenoid coil burnout, spool stiction from contamination, internal leakage, and pilot supply blockage in combination units.
Hersey Electronic Controllers and Interfaces
Panel-mount and DIN-rail controllers for multi-parameter process supervision. Typical faults include capacitor degradation, relay contact wear, analog input card failure, and communication protocol errors with SCADA systems.
Why Choose Synchronics for HERSEY 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 HERSEY 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 HERSEY Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in HERSEY equipment arriving at our workshop.
- ✓Turbine rotor blade wear and bearing failure — Hersey turbine meters experience mechanical wear from abrasive particle contamination and cavitation erosion in high-velocity flow streams. Bearing wear causes rotor eccentricity and increased friction, reducing meter accuracy and generating erratic pulse output.
- ✓Pressure transmitter 4-20mA signal drift — Hersey electronic pressure transmitters suffer from internal diaphragm stress relaxation, capacitor aging in the amplifier circuit, and resistor tolerance shift over time. Zero and span drift typically occurs in 2-5 year old units operating in harsh environments.
- ✓Pressure switch contact chatter and false alarms — Hersey mechanical pressure switches develop contact bounce and chatter due to inadequate damping in the microswitch mechanism, corrosion on precious metal contacts, and spring fatigue reducing switch hysteresis. Vibration sensitivity increases in aging units, causing unwanted alarm triggering.
- ✓Electronic flow meter pickup coil failure — Hersey turbine meter inductive pickup coils fail due to vibration-induced winding fractures, moisture ingress in connector seals, and electromagnetic interference in industrial environments. Coil resistance drift causes weak pulse signals and flow totalization errors.
- ✓Level switch float stiction and jamming — Hersey float-operated level switches experience float rod friction and binding caused by corrosion scale buildup, chemical deposits on the guide rod, and mechanical damage from water hammer or thermal cycling. Stiction causes delayed switch response and level measurement hysteresis.
- ✓Solenoid valve coil burn-out and plunger stiction — Hersey solenoid valve coils fail from sustained overvoltage, insufficient coil cooling in high-frequency duty cycles, and internal electrical short circuits. Plunger stiction develops when pilot orifices become fouled by system contamination, preventing valve closure.
How We Repair Your HERSEY 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 HERSEY Equipment
We serve plant maintenance teams across all major industries where HERSEY automation is deployed.
Frequently Asked Questions — HERSEY Repairs
Do you repair Hersey instrumentation across India?+
Yes. Synchronics Electronics provides comprehensive Hersey equipment repair and calibration nationwide from our Vadodara, Gujarat facility. We offer PAN India door-to-door pickup service from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Bangalore, and all other industrial cities. Turnaround time for Hersey flow meters and transmitters is typically 5-7 business days including recalibration.
Can Hersey turbine flow meters be recalibrated to ISO 4359 or AGA-3 standards?+
Absolutely. Synchronics maintains NIST-traceable pressure and flow test rigs specifically calibrated for Hersey turbine meter verification. We can recalibrate units to ISO 4359 (turbine meter accuracy), AGA-3 (gas flow), or your customer-specified tolerance band. All recalibration data is documented with certificates suitable for regulatory audit and custody transfer applications.
What is the typical repair cost for a Hersey pressure transmitter 4-20mA drift issue?+
Hersey transmitter drift repair costs between Rs. 3,500-6,500 depending on complexity and calibration range required. This includes disassembly, circuit inspection, capacitor replacement if needed, recalibration against pressure standards, and loop testing. We provide transparent quotations before work begins and offer 12-month warranty on all transmitter repairs against recurrence of the same fault.
Do you stock genuine Hersey spare parts and how long are lead times?+
Synchronics maintains inventory of critical Hersey wear items including turbine rotor assemblies, diaphragm kits, solenoid coils, pickup coils, and microswitch cartridges. Most spares are in stock for immediate use. Original Hersey components not in inventory can be procured within 2-3 weeks through our authorized distribution channels, minimizing downtime on your process equipment.
Can Hersey flow meters be repaired if they have been exposed to corrosive or abrasive fluids?+
Yes. Synchronics performs post-exposure inspection and restoration on Hersey meters used with aggressive fluids. We assess rotor damage using magnetic particle inspection, clean chambers ultrasonically, and replace corroded internal components. For severely damaged meters, we source rebuilt or reconditioned Hersey turbine cores and verify full functionality before shipment to your facility.
How do I send my HERSEY 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 HERSEY 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 HERSEY 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 HERSEY 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.
HERSEY Repair Catalog
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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