Quick Answer
Prism Calibration Centre (NABL CC-2480) provides calibration for Gujarat's cement plants: kiln thermocouple calibration (Type S/B, 1200–1500°C), weigh feeder and belt scale calibration, clinker temperature pyrometers, and QC lab instruments (Blaine fineness, particle size, compressive strength testing machines).
Key Takeaways
- Kiln thermocouple calibration covers 1200°C to 1500°C (Type R, S, B thermocouples).
- Weigh feeder and belt scale calibration per OIML and BIS standards.
- Particle size analyser calibration for cement fineness (Blaine method).
- Compressive strength testing machine calibration per IS 516 and EN 196-1.
- BIS product certification (IS 269, IS 455, IS 1489) requires NABL-calibrated test equipment.
Cement Plant Instruments Calibrated
- Kiln inlet/outlet thermocouples (Type R/S/B, 900–1500°C)
- Preheater and cooler temperature instruments (Type K, 400–1000°C)
- Clinker pyrometers (infrared, 800–1600°C)
- Weigh feeders and belt conveyors (mass flow weighing)
- Cement storage silo level instruments
- Compressive strength testing machine (IS 516 calibration)
- Vicat apparatus and Le Chatelier flask (setting time)
- Particle size analyser (laser diffraction, Blaine fineness)
BIS Cement Testing — Calibration Requirements
IS 269 (OPC), IS 455 (SRC), IS 1489 (PPC) — all BIS cement specifications require quality testing in an accredited laboratory with calibrated test equipment. Compressive strength cubes must be tested in a calibrated cube crushing machine. Fineness (Blaine) must be measured with calibrated apparatus. NABL calibration by Prism satisfies these BIS testing requirements.
Frequently Asked Questions
Can Prism calibrate kiln shell pyrometers (scanning type)?
Yes. Prism calibrates infrared scanning pyrometers used for kiln shell temperature monitoring using a NABL-calibrated blackbody source at relevant temperatures.
Does Prism calibrate cube crushing machines for cement testing?
Yes. Prism calibrates cube compression testing machines per IS 516 and EN 196-1 for compressive strength testing of cement mortar cubes (50 mm × 50 mm).
How often should cement plant instruments be calibrated?
Annual calibration for most instruments. Kiln thermocouples (subject to high-temperature drift) should be calibrated every 6 months. Weigh feeders should be calibrated every 6 months in continuous operation.
Can Prism calibrate belt weighers / conveyor belt scales?
Yes. Prism calibrates belt conveyor scales (weigh feeders, integrating belt weighers) using calibrated test chains or material test run method per OIML R 50 and IS 6117.
Does Prism provide on-site calibration for cement plants?
Yes. Prism has experience with on-site calibration at cement plants, including kiln instrument calibration during planned shutdowns and weigh system calibration at quarry crushing stations.
Written by
Er. Parthiv Kinariwala
Managing Director · Prism Calibration Centre · NABL CC-2480 · Ahmedabad
Er. Parthiv Kinariwala founded Prism Calibration Centre in 2004 and has over 20 years of hands-on experience in calibration engineering, NABL accreditation, and industrial compliance. His team performs 10,000+ calibrations annually from the Vatva GIDC laboratory, serving 5000+ industries across Gujarat.
Prism Calibration Centre — Vatva GIDC, Ahmedabad
Prism Calibration Centre
F-101, Rudraksh Complex 2, Phase 3, GIDC Vatva, Near Jasoda Nagar Cross Road, Ahmedabad — 382445, Gujarat, India
Phone: +91 98245 26444
Email: info@prismcalibration.com
NABL: CC-2480 · ISO/IEC 17025:2017
Hours: Mon–Sat, 9:00 AM – 7:00 PM