Calibration Due-Date Reminders: The Email That Arrives Before You're Overdue

A CPS calibration due-date reminder is an automatic email that reaches you before your instruments come due: it looks 30 days ahead, goes out on a weekly cycle, and lists every unit approaching its calibration due date — manufacturer, model, description, serial number, and due date — in one email covering your whole fleet. Units you have already scheduled are left off, so the reminder only ever shows what still needs booking.

Every overdue gas detector has the same biography. The calibration got done, the certificate got filed, and the due date got remembered by nobody — because remembering due dates was nobody's actual job. Twelve months later the date passes silently, and the instrument keeps going out on jobs, reading a little worse each month, until an auditor, an insurer, or an incident investigation reads the sticker and asks the question nobody wants to answer.

The reminder exists so that story ends at the calendar instead of the audit. This post explains exactly how the CPS reminder cycle works — what triggers it, what it lists, and what it deliberately leaves out.

How Do CPS Calibration Due-Date Reminders Work?

The mechanism is simple, and it runs off the record every calibration creates:

1. Every calibration sets the next due date. When CPS calibrates an instrument, the due date goes on its record the same day — the clock starts from the work, not from somebody's spreadsheet.
2. The system looks 30 days ahead, every week. On a weekly cycle, it checks every active instrument's due date against a 30-day window. Anything coming due inside that window is flagged.
3. One email per customer, listing the fleet. You do not get an email per instrument. You get one email covering every unit in that window — the whole list, in one place, ready to forward to whoever books the work.
4. Already-scheduled units are excluded. If a unit is already booked for service, it drops off the list. The reminder never nags you about work that is already handled.
5. Calibration resets the clock. Once the instrument is calibrated, its new due date is set and the cycle starts over — the next reminder comes ahead of the next due date.

No contract starts this and no monthly fee keeps it running. The reminders are part of the CPS Calibration Program: have an instrument calibrated by CPS and its due date is watched from that day on.

What Does the Reminder Email Actually List?

Everything needed to act on it without opening another system:

Notably absent: internal tracking numbers you'd have to look up, and anything you have to log in to see. The email is the working document — forward it to your maintenance planner, your safety manager, or your own calendar and the booking conversation starts from a complete list.

Why Does the Reminder Look 30 Days Ahead?

Because calibration has logistics, and logistics need runway:

• Ship-in customers need time to pull instruments out of rotation, box them, and get them to Rockwood, TN — plus transit back — without leaving a crew unmonitored in the meantime.
• On-site customers need a date that fits the plant's schedule, not a scramble during a shutdown week.
• Everyone needs time to batch: when three units are due in the same window, one shipment or one visit handles all of them instead of three emergencies.

Thirty days is enough runway for all of that. A reminder that arrives the week of the due date is just a warning; a reminder that arrives a month ahead is a planning tool. And because the cycle runs weekly, a unit that enters the 30-day window on a Tuesday is in your inbox within the same week — the lookahead never quietly shrinks to 23 days.

What Should You Do When the Reminder Arrives?

Book the work the way you always do — the reminder changes the timing, not the process:

• Drop off or schedule in-shop if you're near Rockwood: in-house calibration is $55 single-gas, $90 for 4- and 5-gas instruments.
• Ship the listed units in if you're not: the same bench rates apply, and the instruments come back with fresh certificates and new due dates already on their records.
• Book an on-site visit if the fleet can't travel: on-site work is quoted in writing and costs more than bench work — you're paying for the convenience, and every unit serviced still feeds the same record.

However you book it, the calibration services page and one call to 865-900-8844 are the whole procedure. The cost picture is in our calibration cost breakdown.

What the Reminder Is Not

Honesty about the edges, because a reminder system you can't predict is one you stop trusting:

• It's one reminder per due cycle, not a nag sequence. If you've been reminded about a unit and haven't booked it, you won't get a drip of follow-ups. The responsibility to act on the email is yours — the system's job is to make sure the date never surprises you, and it does that once, clearly.
• It only covers instruments CPS calibrates. A detector serviced by another provider has its due date on that provider's certificate, not in your CPS record. Instruments enter reminder tracking with their first CPS calibration.
• It doesn't replace the sticker. The due date on the instrument is still the field check. The reminder's job is upstream — making sure the sticker never gets a chance to be expired in the first place.

Frequently Asked Questions

What is a calibration due-date reminder?

A calibration due-date reminder is an automatic email sent before a gas detector's calibration comes due, so the work gets booked while there is still time. At CPS, the reminder lists every unit approaching its due date — manufacturer, model, description, serial number, and due date — in one email per customer covering the fleet. It replaces the calendar, spreadsheet, or memory that most facilities rely on to track due dates.

How far in advance does CPS send calibration reminders?

Thirty days ahead. The CPS reminder system checks due dates on a weekly cycle against a 30-day lookahead window, so any instrument coming due within the next 30 days appears in that week's reminder email. Thirty days is deliberate: it leaves time to ship instruments in, batch several units into one booking, or schedule an on-site visit around plant operations.

What information does the CPS reminder email include?

Each unit is listed with its manufacturer, model, description, serial number, and calibration due date — everything needed to identify the exact instrument and act on it. One email covers the customer's whole fleet of approaching units rather than one email per instrument. The list contains no internal tracking numbers and requires no login to read.

Will I get a reminder for a detector I already scheduled?

No. Units that are already scheduled for service are excluded from the reminder. The list only shows instruments that still need booking, so you never have to sort out which lines you've already handled. Once a scheduled unit is calibrated, its new due date is set and it re-enters the tracking cycle for the next round.

Do calibration due-date reminders cost extra?

No. Due-date reminders are part of the CPS Calibration Program and come with calibration work — there is no contract, no monthly fee, and no per-reminder charge. You pay for calibrations themselves: $55 for a single-gas instrument and $90 for a 4- or 5-gas instrument at in-house rates, with on-site work quoted in writing.

Will CPS keep emailing me until I book the calibration?

No. The system sends one reminder per due-date cycle; a unit that has been reminded is not re-sent in later weekly emails for the same due date. You get one clear notice with the full list, a month ahead — acting on it is up to you. After the instrument is calibrated, the reminder state resets and the next cycle begins from the new due date.

What if I have gas detectors at several locations?

The reminder covers your fleet in one email, and your calibration history is organized with per-location views, so instruments at different sites stay distinguishable by their records even though they arrive in a single list. Multi-site customers use the unit lines — manufacturer, model, description, and serial number — to route each instrument's booking to the right location.

Which instruments get due-date reminders?

Every instrument with a calibration record at CPS: any detector CPS has calibrated, whether the work was done in-shop, shipped in by mail, or performed on-site. An instrument enters tracking at its first CPS calibration, when its due date is first set on its record. Instruments calibrated only by other providers aren't tracked, because their due dates live in the other provider's records.

Can I book ship-in calibration from the reminder?

Yes. Ship-in is a standard booking route: send the listed units to CPS Calibrations, 109 S. Front Street, Rockwood, TN 37854, and they are calibrated on the same bench at the same rates — $55 single-gas, $90 for 4- and 5-gas — and returned with certificates and new due dates on their records. The 30-day lookahead exists partly to give shipping and transit time room to work.

How do I start getting calibration due-date reminders?

Have an instrument calibrated by CPS. The first calibration opens the instrument's record and sets its due date in the tracking system, and the reminder cycle applies from then on — no enrollment, no contract, no monthly fee. Call CPS Calibrations at 865-900-8844 or bring or ship an instrument to 109 S. Front Street, Rockwood, TN 37854 to start.

The Bottom Line

An overdue detector is almost never a calibration problem — it's a memory problem, and memory is a bad system. CPS reminders remove it: a 30-day lookahead, a weekly check, one email listing every unit coming due with its serial number and date, scheduled units already filtered out.

If your due dates currently live in a spreadsheet or somebody's head, the fix starts with one calibration: call CPS Calibrations at 865-900-8844 and put the instrument on a record that watches the date for you — the fleet history link keeps the proof in the same place.

CPS Calibrations · 109 S. Front Street, Rockwood, TN 37854 · Calibration Services · The CPS Calibration Program