Reliable, end-to-end calibration coordination for industrial dial pressure gauges, process transmitters, and vacuum instrumentation. Delivered through an organized network of specialized technical calibration providers, with clear scope confirmation, seamless drop-off at Nagpur and Raipur, and calibration certificates issued by the responsible calibration provider according to the agreed service scope.
We simplify instrument calibration for maintenance managers, quality heads, and plant engineers across Central India through an organized technical coordination model.
Drop off instruments directly at our registered operating centres in Nagpur (Gandhi Nagar) and Raipur (Tatibandh), or coordinate batched dispatches during scheduled plant maintenance shutdowns.
Our technical team reviews your instrument list, pressure ranges, process media requirements, connection threads (BSP/NPT), and target accuracy classes before confirmation to avoid scope mismatches.
Gain access to specialized calibration service providers equipped with master reference standards (Deadweight Testers and digital calibrators) tailored to your specific pressure instrumentation.
Receive a calibration certificate issued by the responsible calibration provider according to the agreed service scope, detailing reference standards, observed deviations, and measurement uncertainty data.
We coordinate calibration for process instrumentation operating across steam, hydraulic, pneumatic, and chemical installations. Below we strictly distinguish customer instruments submitted for calibration (Units Under Test) from laboratory reference equipment utilized by our partner calibration network during verification.
Bourdon tube dial gauges, glycerin-filled dampers, capsule gauges, and diaphragm-sealed indicators manufactured in accordance with IS 3624 standards.
Sub-atmospheric and dual-scale instruments calibrated for vacuum drying, condenser exhausts, suction pumps, and low-pressure draft systems.
Process transmitters providing electronic output (4–20 mA, HART, Fieldbus) for continuous pressure, hydrostatic level, and flow measurement.
Laboratory reference standards and comparators utilized by calibration partner laboratories to apply and measure known reference pressures against customer instruments.
Every pressure instrument follows a structured technical process from physical intake to final certificate delivery, supporting repeatability, error analysis, and provider-documented traceability where included in scope.
Managed at Nagpur Operating Centre & Raipur Operating Centre
Upon receipt, our technicians inspect the instrument for physical integrity, dial visibility, thread condition (BSP/NPT), and signs of overpressure. The measuring range, accuracy class (per IS 3624 nameplate), and service requirements are recorded.
Executed using provider-specified master calibrators
The instrument is mounted on a hydraulic or pneumatic test comparator alongside a traceable master calibrator. Known test pressures are applied in ascending and descending steps across the operational span (minimum 5 test points per IS 3624 / DKD-R 6-1 guidelines).
Comparison against manufacturer accuracy class limits
Observed deviations between the Unit Under Test (UUT) and the master reference standard are calculated. Technicians evaluate maximum indication error, repeatability, and measurement uncertainty to confirm compliance with the instrument's declared class.
Documentation issued by the responsible calibration provider according to the agreed service scope
Calibration certificate issued by the responsible calibration provider, according to the agreed service scope. The document details instrument identification, observed deviation readings, reference standards used, and environmental conditions. Calibration labels are affixed to the casing.
In compliance with our strict factual integrity policy, all calibration scopes, test procedures, and uncertainty evaluations reference documented Indian and international standards.
Specification for Pressure and Vacuum Gauges
The foundational Indian Standard governing Bourdon tube pressure, vacuum, and compound dial gauges. Defines construction requirements, scale dial divisions, nominal accuracy classes (Class 0.25 to 4.0), and maximum permissible indication errors (MPE).
Guidelines on the Calibration of Pressure Gauges
Authoritative technical procedures for comparative calibration of mechanical and electromechanical pressure measuring instruments. Defines ascending/descending test point distributions, thermal stabilization periods, and measurement uncertainty calculation models.
Master Standard Records & Documented Traceability
Calibration certificates are issued directly by the responsible external calibration provider according to the agreed service scope. Master reference standards, certificate numbers, calibration validity dates, and measurement traceability details (such as to NPL India or SI units) are established on each provider's official certificate and scope documentation.
Operating Hubs in Nagpur & Raipur
Sunrise provides localized coordination and physical handling from its operating centres in Nagpur and Raipur. Activities genuinely performed include physical instrument receipt, visual condition checks, dial and connection thread inspection (BSP/NPT), secure packing, routing to specialized calibration providers, and return dispatch. Commercial registrations (GSTIN: 22AESFS5787A1ZQ, Udyam: UDYAM-CG-14-0029276) establish official business identity.
Under ISO 9001:2015 Clause 7.1.5 (Monitoring and Measuring Resources), measuring equipment should be calibrated or verified at specified intervals, or prior to use, against traceable measurement standards. Organisations should establish suitable calibration or verification intervals for their measuring equipment, considering applicable requirements, equipment usage, measurement risks and historical performance.
Gauges installed on boilers, steam pipelines, chemical reaction vessels, and safety relief systems carry high operational risks. Plant quality procedures, safety risk assessments, or statutory mandates (such as Indian Boiler Regulations) dictate specific surveillance intervals.
Pneumatic compressor headers, reciprocating pump discharges, and hydraulic power packs expose Bourdon tubes to mechanical fatigue and zero-shift. Organizations often establish shorter verification intervals or intermediate zero-checks for high-stress locations.
By maintaining calibration history across multiple cycles, quality teams can evaluate instrument stability over time. Documented drift data enables organizations to responsibly justify and adjust calibration intervals in compliance with Clause 7.1.5 requirements for fitness for purpose.
Common questions regarding instrument intake, service coordination, provider documentation, and turnaround logistics.
We coordinate calibration for analog dial pressure gauges (Bourdon tube per IS 3624, glycerin-filled, diaphragm seals), negative and compound vacuum gauges, industrial digital pressure indicators, hydrostatic test gauges, and electronic differential pressure (DP) transmitters. Specific ranges, process media compatibility, and connection fittings are verified during technical intake.
Sunrise acts as your trusted technical partner. We assist in reviewing your instrument scopes, verify physical condition and fittings at our Nagpur or Raipur hubs, route instruments to specialized calibration providers equipped with matching master standards, and oversee calibration certificate delivery and return dispatch.
A pressure gauge or transmitter submitted by a customer is the Unit Under Test (UUT). A master pressure calibrator (such as a Deadweight Tester or high-precision digital reference indicator) is the laboratory reference standard used by responsible calibration providers to apply and measure known reference pressures to verify the accuracy of the UUT.
You receive a calibration certificate issued by the responsible calibration provider, according to the agreed service scope. The document records instrument identification, reference standards, observed deviations across test points, environmental conditions, and stated measurement uncertainty. Applicable traceability details can be confirmed with the responsible calibration provider.
Yes. Portable instruments can be delivered to our Nagpur Operating Centre (Plot No. 19, Gandhi Nagar) or Raipur Operating Centre (Harshit Jewels, Tatibandh). Alternatively, plants with multiple instruments can arrange consolidated courier dispatch or schedule on-site plant verification for non-removable process lines.
Yes. Our metrology team reviews your equipment register, dial diameters, connection types (1/4" or 1/2" BSP/NPT), process media compatibility, and accuracy classes to help define the appropriate calibration scope before submission, avoiding scope mismatches and audit queries.
Contact Sunrise Testing & Calibration Centre directly to review instrument scopes, calibration turnaround, or drop-off logistics.
Speak directly with technical personnel regarding your instrument list or on-site plant calibration requirement.
Instruments can be dropped off directly at our operating bases in Nagpur and Raipur.
