✓ ISO 9001:2015 Certified Manufacturer

India's Trusted Instrumentation Cable Manufacturer - Direct from Factory

 Instrumentation Cable  from 1 pair to 50 pair — 2 core, 5 pair, 8 pair and custom configurations, screened or unscreened, armoured or unarmoured — engineered for noise-free signal transmission and Dispatched pan-India on committed schedules from our ISO-certified Bhiwadi facility.

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Trusted by India's Top Industrial Plants & PSUs

Our instrumentation cables have been supplied and approved on projects and plants of India’s leading public and private sector organisations.

 
Product Introduction

What Makes an Instrumentation Cable Different — and Why It Matters

Instrumentation cables are the signal highways of any industrial plant. Unlike standard power cables that carry high current at elevated voltages, instrumentation cables are …designed to transmit low-level signals — 4–20 mA current loops, millivolt thermocouple outputs, RTD resistance signals, HART, Fieldbus, and Modbus data — from field instruments to control rooms and DCS panels.

The fundamental engineering challenge is maintaining signal accuracy across long cable runs in environments full of electrical interference — motors, VFDs, high-voltage switchgear, and RF sources. This is why every properly engineered instrumentation cable uses twisted pair or twisted triad construction combined with EMI shielding (Al-Mylar tape screen + tinned copper drain wire) to achieve reliable, noise-free signal transmission.

As a BIS-licensed cable manufacturer, BMI produces the complete instrumentation cable  range — manufactured and tested to IS, IEC and BS 5308

Instrumentation Signal Cables - BMI Cables
Complete Product Range

Shielded & Screened Instrumentation Cables We Manufacture

From basic twisted cable for single-loop instruments to complex multi-triad IS+OS armoured designs — BMI supplies the complete spectrum of screened and shielded instrumentation cables, direct from our ISO-certified factory in Bhiwadi, Rajasthan.

Cable type Shielding Armour Pairs / triads Sizes (sq mm) Insulation Outer sheath Application
Overall Screened Unarmoured
OS/UA
Al-Mylar overall screen + drain wire None 1P – 50P 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR Process control, indoor runs
IS+OS Screened Unarmoured
IS+OS/UA
Individual + overall screen (Al-Mylar / Cu tape) None 2P – 50P 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR Low-noise loops, DCS panels
Overall Screened Armoured
OS/A
Al-Mylar / Cu braid overall screen GI Wire / Strip / Tape 1P – 50P 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR Outdoor, trenches
IS+OS Screened Armoured
IS+OS/A
Individual + overall screen (tape / braid) GI Double Tape / Wire / Strip 2P – 50P 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR Oil & gas, hazardous areas
Shielded Twisted Pair
2P–50P
Individual or overall screen (per spec) Armoured / Unarmoured 2P – 50P 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR Analog signals, SCADA
Triad Cables (3-Wire RTD) Individual triad + overall screen (optional) Armoured / Unarmoured 1T – 24T* 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR 3-wire RTD, 4–20mA loops
Multi-Pair / Multi-Triad
Up to 50P
Individual + overall screen (Al-Mylar + Cu braid) Armoured / Unarmoured Up to 50P / 36T* 0.5 / 0.75 / 1.0 / 1.5 / 2.5* PVC / XLPE / FR-XLPE / EPR PVC GP / PVC FR / FRLS / LSZH / HFFR DCS/SCADA, power plant control

Higher triad counts and 2.5 sq mm conductors available on request. Custom pair/triad combinations manufactured to your project datasheet.

Need a custom specification? We manufacture to your project datasheet, purchase order, or IS/IEC standard.

Industries We Serve

Instrumentation Cables for Every Critical Industry

Our shielded and screened instrumentation cables are specified and installed in India’s most demanding industrial environments across six major sectors.

Oil & Gas

Refineries & Petrochemicals — 4–20 mA transmitter loops, DCS wiring, and IS circuits for hazardous areas.

Steel & Metals

Thermocouple and RTD circuits for furnaces, rolling-mill automation in high-EMI zones.

Cement & Mining

kiln and crusher instrumentation built for dust, vibration, and rough handling.

Railways & Metro

Signalling, telecom, and SCADA circuits along electrified corridors.

Fertilizers & Chemicals

Process-control loops and intrinsically safe signal wiring in corrosive plants.

Power Plants

Thermal, Hydro & Nuclear — boiler and turbine instrumentation, vibration monitoring, plant-wide SCADA.
OEM & Tender Supply

Your Instrumentation Cable Supplier for OEM & Tender-Based Procurement

From panel manufacturers needing custom configurations to EPC contractors sourcing against tender specifications — BMI supplies instrumentation cables in bulk with complete documentation.

OEM Supply Capability

For panel manufacturers, machine builders & industrial OEMs

EPC & Tender Supply Support

For EPC contractors, consultants & public sector procurement
Why Engineers Specify BMI

Why Engineers & Procurement Managers Specify BMI Instrumentation Cables

✓ Direct Manufacturer — Zero Distributor Markup

Buy directly from the ISO-certified factory. No dealer margin, no middleman, you get factory pricing with full quality accountability.

✓ Complete MTC & Third-Party Inspection Support

Manufacturer’s test certificates, batch test reports, and full TPI support from RITES, Bureau Veritas, TUV, Intertek, or any client – nominated agency.

✓ Engineering Support — Cable Selection Assistance

Our technical team reviews your plant layout, instrument list, and environmental conditions and recommends the correct shielding, insulation, and armour specification before you commit to procurement.

✓ Approved Vendor — PSU & Private Sector

Already on approved vendor lists for BPCL, HPCL, NTPC, JSW, and 100+ industrial plants, which typically eliminates requalification delays on your project.
Our Manufacturing Facility

See Where Your Cable Gets Built

A look inside our Bhiwadi factory, where every Instrumentation Cable is wound, tested, and dispatched directly to your site.

Certifications & Standards

Manufactured to Indian & International Standards

Our instrumentation cables are manufactured and tested under a comprehensive quality framework that satisfies the most demanding industrial buyers, EPC engineers, and PSU procurement specifications.

IS 7098
For XLPE Insulated Cables
IS 694
For PVC Insulated Cables
IS 9968
For Rubber Insulated Cables
IS 1554
PVC Insulated (Heavy Duty) Electric Cables
ISO 9001:2015
QMS Certificate

Instrumentation Cable — Technical & Commercial FAQs

Instrumentation cables carry low-level analogue or digital signals (4–20mA, 0–10V, RTD, thermocouple) and must have twisted pairs/triads with EMI shielding (Al-Mylar screen + drain wire) to prevent signal distortion from electrical interference.

Control cables carry switching signals at higher voltages (110V, 230V, 415V) and do not require shielding. Using a control cable in a DCS instrumentation loop causes signal noise, measurement errors, and loop calibration failures.

Individual Screened (IS): Each pair has its own Al-Mylar screen and drain wire. Eliminates cross-talk between signal loops in a multi-pair cable. Essential for DCS multi-loop systems.

Overall Screened (OS): One screen covers all pairs. More economical. Adequate for single-loop or where all pairs carry signals from the same instrument.

IS + OS: double-layer protection — required in high-EMI environments like refineries and near HV transformers.

0.5 sq mm — Short-distance wiring inside panels and marshalling cabinets (under 50m)
0.75 sq mm — Standard field runs up to 200–250m for 4–20mA loops
1.0 sq mm — General purpose field runs, medium distance
1.5 sq mm — Long-distance field wiring (300m+), intrinsically safe circuits
2.5 sq mm — Solenoid valve power, high-current field devices, very long runs.

We can calculate the exact conductor size based on your loop resistance requirement. Contact us with your transmitter model and cable run length.

Yes. Every batch from our Bhiwadi factory comes with a Mill Test Certificate (MTC) covering conductor resistance, insulation resistance, spark test, and dimensional data as per the applicable IS/IEC standard.

For EPC and government project orders, we support third-party inspection by agencies such as RITES, Bureau Veritas, TUV, Intertek or any client – nominated agency. Pre-dispatch inspection can be arranged at our factory with advance notice.

  • Non-standard core counts (e.g. 7-pair, 15-triad, mixed pair + triad)
  • Special insulation colour codes per customer BOM or IEC standard
  • Custom reel lengths (100 m, 250 m, 500 m, 1000 m drums)
  • Private labelling with your brand/project name printed on the sheath.
  • Special sheath colours (grey, blue, black, red, orange).
  • Combined pair + triad cables in a single design.

Standard PVC: Most economical. Adequate for general industrial use. Releases halogen gases when burned — not suitable for enclosed spaces.

FRLS-H: (Flame Retardant Low Smoke) — self-extinguishing, low smoke density. Required for buildings, metros, hospitals. Still contains halogens.

LSZH / ZHFR: Zero halogen gas emission. Mandatory in tunnels, ships, offshore platforms, pharma cleanrooms, nuclear facilities. Higher cost but critical for personnel safety in enclosed spaces.

EMI screening is standard on our instrumentation cables — specify overall screened (OS), individually screened (IS), or IS+OS double-screened construction depending on your interference environment. For low-noise indoor applications we also manufacture plain unscreened twisted pair constructions on request. Either way, we build to your exact datasheet — Al-Mylar tape, copper braid, or both, with tinned copper drain wire.

India's Trusted Instrumentation Cable Supplier

Ready to Source Instrumentation Cables Direct from the Manufacturer?

Talk to our instrumentation cable specialists for expert guidance on shielded twisted pair, screened signal cables, and complete pair cable solutions tailored to your project requirements.

 
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Corporate / Sales & Marketing Office
SF-1, 1st Floor, Bhikaji Cama Bhawan, Bhikaji Cama Place,
New Delhi 110066, India

Works
F-81 to 84, & G-108, RIICO Industrial Area, Kushkhera, Bhiwadi, Distt. Alwar, Rajasthan-301019