PreCal Sticker – LDARtools

What this report does

Generates a compact precision calibration summary for each selected analyzer, formatted as a physical sticker that can be printed and affixed to the instrument in the field. Each sticker shows the average response time and precision error for each gas cylinder used in the current quarter's precision calibration.

One sticker block is produced per analyzer per probe type (Standard and Extension probes are on separate stickers if both have passing precision calibration records in the current quarter). This report is in the Calibration folder on the Reports tab.

Current quarter only. This report only shows analyzers that have a passing Precision Calibration record in the current calendar quarter. Analyzers without a passing PreCal in the current quarter will not appear.

When to use it

Printing response time stickers to attach to analyzers before field deployment.
Confirming that an analyzer has a current passing precision calibration before use.
Quickly looking up the average response time for each gas range on an analyzer.

Parameters

Parameter	Description	Required	How it filters
Analyzers	One or more analyzers to include	Yes	Only stickers for the selected analyzers are generated; the list shows analyzers with a PreCal record in the past 90 days

Sticker layout

Each sticker block is grouped by analyzer and probe type. The header shows the analyzer name, calibration quarter, and probe type. The body contains one row per gas cylinder:

Column	What it shows
PPM	Target concentration (span) of the gas cylinder
PRECAL BY	Technician who performed the precision calibration
DATE	Date the precision calibration was performed
Avg Resp	Average response time across the three test readings (seconds)
Precision	Precision error — average deviation of the three readings from the cylinder concentration (%)

The calibration quarter (e.g., "1Q2023") identifies which quarter the calibration belongs to and appears in the sticker header.

What's included and excluded

Included:

The most recent passing Precision Calibration for each selected analyzer and probe type in the current calendar quarter.
One row per gas cylinder per precision calibration session.
Both Standard and Extension probe calibrations, if both exist for the current quarter.

Excluded:

Analyzers not selected.
Analyzers without a passing Precision Calibration in the current calendar quarter.
Failed (non-passing) precision calibration sessions.
Daily Calibration and Drift records.

How key values are calculated

Precision

Precision = |Average(Test 1, Test 2, Test 3) ÷ Cylinder Concentration × 100 − 100|

The absolute percentage deviation of the average of the three test readings from the cylinder's certified concentration. A value of 0.00 is reported for zero gas (concentration = 0).

Avg Resp

Avg Resp = Average response time for the three tests (seconds)

Response time is the number of seconds the analyzer takes to reach 90% of the calibration gas concentration. The average of the three test response times is shown.

Calibration Quarter

Derived from the calibration date: formatted as NQ{YYYY} (e.g., 2Q2026 for a calibration performed in April–June 2026).

Tips and common questions

"An analyzer I expect to see is not listed." The Analyzers parameter only shows analyzers with a PreCal record in the past 90 days. If no precision calibration was performed in the current calendar quarter, the analyzer will not appear in the list and will not generate a sticker.
"Two stickers appear for the same analyzer." This is expected when the analyzer has both a Standard probe and an Extension probe precision calibration for the current quarter — one sticker is generated per probe type.
"Avg Resp shows 0.00 for all cylinders." Response times are recorded as part of the precision calibration process. A value of 0.00 may indicate that response time data was not captured during the calibration session.
"How does this relate to the Precision Calibration report?" The Precision Calibration report shows the full detail of each precision calibration session (all three test readings, all cylinders, any date range). The PreCal Sticker shows only the most recent passing session for the current quarter, in a compact printed format.
"Which calibrations are included — what does 'current quarter' mean?" The report includes only PreCal records from the current calendar quarter (January–March, April–June, July–September, or October–December). A PreCal performed in the previous quarter will not appear even if it was the most recent one. If no passing PreCal exists for an analyzer in the current quarter, that analyzer will not appear on the sticker.
"What is this report used for?" The PreCal Sticker is designed to be printed and physically affixed to each analyzer. It serves as a quick reference showing the most recent passing precision calibration result for that device. One block is generated per analyzer per probe type, so a single printout covers all probe configurations for that analyzer.

Sample output

Report run for Analyzer: phx42-6252

What the rows illustrate:

0 PPM (zero gas) — Precision is always 0.00 for zero gas.
500 PPM through 10,000 PPM — Two span gas cylinders; Precision values of 3.52% and 1.76% indicate the average deviation of two test readings from each cylinder's certified concentration.

Output format

One sticker block per analyzer per probe type, each containing one row per gas cylinder. Ordered by calibration date and cylinder concentration within each sticker. Designed for printing and physical attachment to the analyzer. Also available for on-screen viewing.

Related reports

Precision Calibration — full precision calibration detail for any date range; shows all three individual test readings, response times, and pass/fail status.