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.
