Hindustan Scale Company · Est. 1955Wireless crane scales — safe-distance readout

A day of lifts is a day of data. Today most of it evaporates at shift change.

At six in the evening in most steel, scrap and foundry bays the day’s weights are in a notebook in the crane operator’s pocket, on the back of a challan, or in nobody’s memory at all. Crane scale data logging keeps them somewhere better. The scale still hangs on the hook and weighs the load — but every lift is stored the moment the reading settles, with weight, tare, time and the scale’s own identity, and nobody writes anything down. Here is what a lift record must contain, why it settles disputes, what Indian law says about it, and how to start on one crane in thirty days.

CRHSS – Electronic Flame Proof SS Crane Scale with Remote & Printer - the HSCo product this paper is about.
The scale weighs the bundle, stores the lift and prints the slip. Nobody in the bay has written a number down.

Where the day’s lifts go at six o’clock

India made 164.9 million tonnes of crude steel in 2025 — second in the world, according to the Ministry of Steel’s July 2026 overview of worldsteel data. Much of it is bought, sold or yielded by the weight on a crane hook, and the Ministry’s June 2026 economic report put 10 mm TMT bar at ₹57,950 a tonne, including GST, in Mumbai on 30/06/2026 — roughly ₹2.9 lakh passing under the hook in one 5 t lift.

Count your own crane’s lifts for one shift. Then ask where those numbers are at shift change.

In most bays the answer is “with the day shift”. The UK Health and Safety Executive states that “many accidents have occurred because of failure of communication at shift handover”. Its standing example is Piper Alpha: the Cullen Inquiry into the July 1988 platform fire, which found 167 people had died, found that the status of a pump under maintenance was never passed to the night shift — the permit for its removed safety valve was left in the control room and never found. Nobody dies when a lift tally goes missing. The mechanism is the same: information that lives in one person’s head or notebook leaves with that person. The HSE’s remedy is a written handover. In a weighing bay the writing should come from the scale, not from a tired operator at the end of the shift.

Because handwriting is the second leak. A 2012 study in PLoS One of 21,887 data fields found that single keying of hand-written numbers produced about 6.7 errors per 1,000 fields, against 0.046 per 1,000 when structured machine data was captured automatically. The strictest record-keeping regimes agree: the PIC/S data-integrity guide (2021) calls “scraps of paper” kept for later transcription a major deficiency, and the US FDA’s 21 CFR Part 11 requires secure, computer-generated, time-stamped audit trails. Pharmaceutical rules, not scrap-yard rules. The principle travels anyway.

Comparison figure: a notebook entry holding a weight alone against a complete lift record with weight and unit, gross, net and tare, time, scale ID and integrity check
The notebook says 5020. The record says 5,020 kg, gross and tare, when, on which scale, and that nothing has been changed since.

What does crane scale data logging actually record?

A number on its own is not a record. The international recommendation for weighing instruments, OIML R 76-1, and the European WELMEC software guide (7.2:2022) describe the same stored dataset: the weight with its unit; the gross, net and tare values, with tare marked as tare; an identification of the weighing — a consecutive number, or the date and time; the identity of the scale; and a checksum, so a stored value cannot be altered without it showing. A row that holds a weight alone fails that test.

Two more rules decide whether a log can be trusted. First, OIML R 76-1 says the legally relevant data “shall be stored automatically” — the storing function “must not depend on the decision of the operating person”. A log that exists only when somebody remembers to press Print is a notebook with a battery. Second, nothing may be stored while the load is still swinging: OIML R 76-1 holds storage until the reading is stable within one scale division, a rule NIST Handbook 44 (2026 edition) repeats for the United States.

What the record carries Why it is there
Weight and unit (kg or t) A bare “5020” is neither a weight nor a record
Gross, net and tare, tare marked “T” A slung coil and a bare hook are never confused
Date and time, or a running number Ties the lift to the truck, the heat or the invoice
Scale ID Which crane, which scale, which verification stamp
Integrity check Shows if a value was changed after the event
Product, customer, operator, vehicle Optional; they turn a lift list into a report

That is how Hindustan Scale Company (HSCo) builds it. Each connected crane scale in the CRH and CRHBT families sends every reading with its own scale ID. The reading reaches a remote desktop indicator with an RS-232 / USB output, a hand-held display with a built-in printer for a slip at the lift, or the data logging and reports service, which stores each weighing with its date and time stamp, product, batch, operator and vehicle, produces shift-, operator-, product- and customer-wise reports, and exports to PDF, Excel and CSV. Cloud storage adds a live dashboard, viewable on a phone.

Diagram of one lift becoming one record: crane scale, reading settled, record fields, printed slip, desk indicator and cloud dashboard
The scale on the hook waits for the reading to settle, stores the lift with its fields, and sends it to the slip, the desk and the cloud — no operator decision in the chain.

Why the record, not memory, settles a dispute

Even a perfectly verified crane scale is allowed to be wrong by a stated amount, and the amount doubles once the scale is in service. OIML R 76-1 allows a Class III scale half a division of error up to 500 divisions, one up to 2,000 and one-and-a-half up to 10,000 at verification — and in service “twice the maximum permissible errors on initial verification”. Worked through for a generic Class III 5 t crane scale with a 2 kg division: up to ± 3 kg on a full 5 t lift at verification, up to ± 6 kg in service. Over 100 lifts of 5 t that is up to 600 kg of legally permitted drift either way. The record of the verified scale — which scale, which lift, what time, what tare — is the only thing that shows which way the drift went.

The scale’s identity matters because the stamp is attached to it. The Legal Metrology Act, 2009 requires every weight or measure used in a transaction to be verified before use (section 24); using an unverified one carries a fine of ₹2,000 to ₹10,000 for a first offence and up to a year’s imprisonment for a repeat (section 33). Verification of an electronic weighing instrument runs twelve months (Delhi Weights and Measures FAQ; enforcement Rule 27). A log that names the scale on every lift tells you at a glance whether last March’s lifts were made on a scale whose stamp was in date. (See what government stamping means.)

Why now: Indian law already treats the log as a document

Since 01/07/2024 the Bharatiya Sakshya Adhiniyam, 2023 has defined a “document” to include electronic and digital records. Under section 63, output from a computer in regular use, fed in the ordinary course of the business, is admissible without the original — provided a certificate from the person in charge accompanies it. PRS Legislative Research notes the certificate requirement was deliberately kept: admissible with a certificate, not automatically accepted. A lift log kept by the scale system in the ordinary course of the bay’s work, with a named person in charge, is the kind of record the section contemplates. A notebook re-typed after the shift is not.

Two other duties sit on the same paperwork. Section 36 of the Central Goods and Services Tax Act, 2017 requires accounts and records to be kept for 72 months from the due date of the annual return. Section 29 of the Factories Act, 1948 requires every lifting machine to carry a plainly marked safe working load and an identification mark, never to be loaded beyond it, and to be examined at least every twelve months with a register kept. Neither section obliges you to log every lift. But a log of each weight against the crane and scale ID is the one record that can show, six years later, that no lift exceeded the marked load and that the tonnage on the invoice was lifted on a stamped scale.

What crane scale data logging is not

It is not a replacement for the stamped reading. In trade use the verified display on the scale remains the legal weight; the log is a faithful, time-stamped copy of it.

It is not a way to spy on the crane operator. It records the lift, not the person — and “I lifted 42 coils” becoming a list of 42 lifts with times settles arguments in his favour as often as against him.

It is not an ERP. It feeds one through the ERP and billing integration route, or stands alone as reports and a dashboard.

And it is not “set and forget”. Every scale needs a name, the clock has to be right, and somebody has to be the person in charge who can sign for the record. Half-day jobs, but jobs.

Two shift supervisors at a steel-yard office window at dusk with the day's lifts on a wall dashboard instead of in a notebook
Shift change at six. The outgoing supervisor has nothing to hand over: the day's lifts are already on the screen.

What changes on Monday morning

For the crane operator. He hooks the load, lets it settle and reads the weight on the hand-held display or the phone. The lift is already stored. Nothing to write, nothing to remember at six o’clock.

For the dispatch clerk. The shift’s lifts arrive as a list, tare shown as tare, every row time-stamped, ready to total by customer or by vehicle. No slip from a shirt pocket, no re-typing.

For the owner. “What did we lift for that customer on the 14th?” is a search, not an argument. Yield per heat, tonnes per shift and tonnes per operator are the same data cut three ways.

For the safety officer. The register of loads against each crane’s identification mark writes itself.

How to start: one crane, thirty days

  1. Pick the one crane whose tally is argued over most — usually the one that loads trucks.
  2. Decide what one record must carry beyond the mandatory fields: product, customer, operator, vehicle.
  3. Choose where the record goes: a printed slip at the hook, a desk indicator in the dispatch office, the cloud dashboard — or all three.
  4. Name the person in charge of the system — the name on the certificate if the log is ever produced in a dispute.
  5. Count for thirty days: lifts made against lifts recorded, disputes over a weight, minutes spent totalling at shift end.
  6. Roll out to the next crane only when the count says so.

Hindustan Scale Company has made weighing scales in Mumbai since 1955 and builds the crane scale, the indicator, the software and the cloud platform itself — one supplier for the whole chain. The wider connected range is on the IoT connected weighing scales page.

Frequently asked questions

What is crane scale data logging?

It is the automatic storage of every lift a crane scale makes — the weight with its unit, gross, net and tare, the date and time or a running number, and the scale’s own ID — the moment the reading settles, with no clerk writing anything down. The stored lifts are then totalled into shift, operator, product and customer reports.

Does the operator have to press a button for every lift?

No, and by the international recommendation he should not have to. OIML R 76-1 says the storing of legally relevant data must not depend on the decision of the operating person. The scale stores the lift once the reading is stable within one division; the operator can add a product or a customer, but the record exists either way.

Will a crane scale log be accepted in a dispute or in an Indian court?

An electronic record is a document under the Bharatiya Sakshya Adhiniyam, 2023, in force since 01/07/2024, and output from a system in regular use is admissible without the original when a certificate from the person in charge accompanies it. Keep the system in regular use and name that person. In trade the stamped display remains the legal weight.

What happens to the records if the network or the PC is down?

The right behaviour, described in OIML D 31, is to keep weighing, hold the records locally and forward them in order when the link returns. A printed slip at the hook is the belt-and-braces option where paper is still wanted. Ask any supplier how their scale behaves during a three-hour outage before you buy.

Can I get the lift data into Excel or my ERP?

Yes. HSCo’s data logging service exports to PDF, Excel and CSV and to customer formats, and the ERP and billing integration route is there for plants that want the weight to land directly on the invoice.

Does logging make the crane scale more accurate?

No. A verified Class III scale keeps its legal error band — for a generic 5 t scale with a 2 kg division, up to ± 6 kg on a full lift in service. Logging does not shrink that band; it records which scale, when and with what tare, which is what settles a dispute.

Next step

Tell us which crane’s tally is argued over most, and we will propose a thirty-day crane scale data logging pilot for it.

Hindustan Scale Company (HSCo) · Mumbai · est. 1955 · www.hindustanscale.com · hsc@hindustanscale.com

Sources

  1. OIML R 76-1:2006 — Non-automatic weighing instruments, Part 1, clauses 3.5.1–3.5.2 (Class III tolerances, doubled in service), 4.4.2 and 4.4.6 (no storing until stable within 1 e), 4.6.11 (N and T marking) and 5.5.3.2–5.5.3.5 (stored data; storage “must not depend on the decision of the operating person”).
  2. OIML D 31:2023 — General requirements for software-controlled measuring instruments, clauses 6.2.7, 6.3.4.2, 6.3.4.3 and 6.3.4.4.1 (timestamps, completeness of stored data, automatic storing, local buffering).
  3. WELMEC Guide 7.2:2022 — Software Guide (Measuring Instruments Directive 2014/32/EU), requirements L1/T1 and L4/T4.
  4. NIST Handbook 44 (2026 edition), Section 2.20 Scales — S.2.5.1 (recording only when stable within ± 1 division); Table 6 and T.N.3.2 (maintenance and acceptance tolerances).
  5. The Legal Metrology Act, 2009, sections 10, 24 and 33; Department of Weights and Measures, Government of NCT of Delhi — FAQs; S.S. Rana & Co. — “Verification of Weights & Measures under the Legal Metrology Act” (06/12/2021), Rule 27.
  6. UK Health and Safety Executive — “Human factors: Shift handover” (citing the Cullen Report); Wikipedia — “Piper Alpha” (summary of the Cullen Inquiry, 1990).
  7. Paulsen A., Overgaard S., Lauritsen J. M. — “Quality of Data Entry Using Single Entry, Double Entry and Automated Forms Processing”, PLoS One 7(4): e35087 (2012); Barchard K. A., Pace L. A. — “Preventing human error”, Computers in Human Behavior 27(5) (2011).
  8. PIC/S PI 041-1 — Good Practices for Data Management and Integrity in Regulated GMP/GDP Environments (01/07/2021), sections 9.4 and 11.2; MHRA — GXP Data Integrity Guidance and Definitions, Revision 1 (March 2018); US FDA — 21 CFR 11.10(e).
  9. Bharatiya Sakshya Adhiniyam, 2023 (Act 47 of 2023, in force 01/07/2024), sections 2(1)(d) and 63; PRS Legislative Research — analysis of the Bharatiya Sakshya (Second) Bill, 2023.
  10. Central Goods and Services Tax Act, 2017, section 36; The Factories Act, 1948, section 29.
  11. Ministry of Steel, Government of India — An Overview of Steel Sector (July 2026, worldsteel and Joint Plant Committee data) and Monthly Economic Report, June 2026 (JPC retail prices, Mumbai, 30/06/2026); Wikipedia — “List of countries by steel production”.
  12. Hindustan Scale Company — Data Logging & Reports page; crane scale range pages (September 2026).