The W3140 is the digital data-export accessory kit for the Accuris Series DX and TX balances — bundles an RS232-to-USB converter, the connecting cable, and the Accuris iWeight software for data collection, statistics, and graphing on a connected PC. Distinct from the W3141 sister kit which ships the iWeight PRO software with 21 CFR Part 11 compliance for regulated environments — the W3140 base kit is the standard digital-data-export accessory for non-regulated workflows.
Key Specifications
| SKU | W3140 |
| Type | Communication kit + iWeight software for DX / TX balance digital data export |
| Compatible balances | Accuris DX and TX balance series (Dx and Tx analytical-balance lines) |
| Hardware included | RS232-to-USB converter + connecting cable |
| Software included | iWeight (data collection, statistics, graphing) |
| PC connection path | Balance RS232 → RS232-to-USB converter → PC USB port |
| List price | $250 |
Datasheet detail note (FQ-014): iWeight software version, OS compatibility (Windows / macOS / Linux), file export formats (CSV / Excel / proprietary), RS232-to-USB chipset, and OS driver requirements are not stated in the available brochure-extract corpus and are intentionally not stated here rather than guessed. Confirm full kit specifications at quote with Accuris.
W3140 vs W3141 — Base iWeight vs iWeight PRO
The Accuris communication kit ships in two variants for different workflow tiers:
| Variant | Software | 21 CFR Part 11 | List price | When to pick |
| W3140 (this product) | iWeight (base) | No | $250 | Standard digital-data-export workflows for research and non-regulated lab use |
| W3141 | iWeight PRO | Yes — 21 CFR Part 11 compliant | $495 | Regulated environments — pharma QC, GMP, GLP — that mandate electronic records / electronic signatures compliance |
The pricing differential ($245) reflects the regulated-software premium for 21 CFR Part 11 compliance — audit trails, electronic signatures, user-access control, tamper-evident records. Pick the W3140 base kit when 21 CFR Part 11 compliance is not a workflow requirement; pick the W3141 PRO kit when it is.
When to Order This SKU
Order the W3140 when:
- Digital data export to PC is the primary workflow — replacing paper-printer accessory workflows (W3130 / W3300-TP) with a PC-resident data-collection workflow
- Statistics and graphing are part of the protocol — workflows that compute mean / SD / CV across replicate weighings, or visualize weighing-event time-series data
- Sample-cohort batch weighing — workflows weighing tens to hundreds of samples in a session where the iWeight software collects, indexes, and exports the data set in one operation
- Spreadsheet-resident downstream analysis — workflows where the weighing data feeds into a downstream Excel / spreadsheet workflow
- Non-regulated research, teaching, and QC contexts — where 21 CFR Part 11 compliance is not a mandate (use the W3141 PRO kit when it is)
Ordering & Configuration
RS232-to-USB driver installation. The converter typically requires a USB-serial driver on the PC (FTDI or Prolific is common; specific chipset not stated in available data — confirm at quote). The PC-side OS must support the driver — confirm at quote whether the lab uses Windows, macOS, or Linux for data collection.
iWeight software installation. The included software installs on the PC; confirm version and OS compatibility at order. License model (per-PC / per-lab / network license) should be confirmed at quote.
Confirm at quote: balance model (DX / TX series confirmation), PC OS (Windows version / macOS / Linux), 21 CFR Part 11 requirement (if yes, route to W3141 instead), data-export format requirements, and lead time.
Warranty: Per Accuris standard accessory and software-license warranty terms — confirm at quote.
Accuris balance accessory family:
- W3120 — Compact anti-static ionizer
- W3130 — Serial printer (RS232) for Dx / Tx analytical balances
- W3140 (this product) — Communication kit + iWeight software (digital data export)
- W3141 — Communication kit + iWeight PRO software (21 CFR Part 11 compliant variant)
- W3300-TP — Thermal printer (broader compatibility)
Pick W3140 for digital-export workflows in non-regulated contexts. Pick W3141 when 21 CFR Part 11 compliance is required. Pick W3130 / W3300-TP when paper records are the workflow standard instead of PC export.
