Frequently asked questions

Sand control screen quality control — what operators and screen manufacturers ask us most.

How do I prove sand control screens meet ISO 17824 / API specifications?

You need a calibrated measurement of slot aperture, wire profile and aperture distribution, traceable and reproducible across batches. CTRL+ instruments output exactly that — a digital report per screen, audit-ready, with the same calibrated metric whether the measurement was taken on the production line, on the lab bench or in the field.

What's the difference between wire wrap and slotted liner screens?

Wire wrap screens are formed by triangular wedge wire wrapped around a perforated base pipe; the slot is the gap between adjacent wire turns. Slotted liners are tubes with longitudinal slots machined into the wall. Both require slot aperture qualification — and CTRL+ measures both.

Why use optical metrology instead of feeler gauges?

A feeler gauge is destructive (deforms the slot at contact), single-point, undocumented and operator-dependent. Optical metrology is non-contact, samples the full slot profile, produces a digital trace, and removes operator bias. On a 200-screen batch, time per screen drops from 30 minutes (manual) to 2 minutes (optical) — with full traceability. And unlike a fixed benchtop optical comparator, CTRL+ brings a portable optical bench (most+) to the screens: field-deployable, battery-powered, no lab required.

What slot apertures can CTRL+ instruments measure?

From ~50 µm to ~2 mm — covering the full range of sand control screens (0.002 in to 0.080 in), water well screens, paper-machine screens and industrial filtration. Slot length, slot width, wire corner radius and wire half-angle are all measured.

How do I run an incoming inspection on a delivered screen batch?

With most+ directly in your warehouse: power on, place it on the screen, scan the slots, receive a per-screen measurement report. Whole batches are documented and archived in Arcadia+Reports — auditable, queryable, exportable. You can compare measurements against your specifications, and defective screens are flagged before they leave the warehouse — before they reach the well, before they cost you NPT.

Can optical slot measurement be done in-line during production?

Yes — that's what olmost+ does. Continuous slot monitoring integrated directly onto the manufacturing machine, every screen measured during production, no operator handling, no line slowdown. osmart+ goes further: real-time corrective adjustments fed back to the machining parameters, automatically.

Are CTRL+ measurements traceable?

Each instrument is calibrated against certified reference standards. Every measurement is timestamped, instrument-tagged, archived in Arcadia+Reports — batch ID, screen serial number, measurement hardware used. Reports are exportable in PDF or CSV, sent by email or accessible via your web portal for QMS integration.

What does CTRL+ cost vs the cost of a failed sand control screen?

A single workover from a sand-control failure can cost $1M to $10M+ in NPT and deferred production. CTRL+ instruments pay for themselves on the first prevented failure. For manufacturers, documented quality is the difference between commodity pricing and premium markets.

What instrument measures slot openings on pulp & paper pressure screen baskets and wedge-wire pulp screen cylinders?

CTRL+ optical slot trackers (mbost+, bost+, most+) measure the slot width on paper-mill pressure screen baskets and wedge-wire pulp screen cylinders at 5–15 µm resolution, non-contact, on 100% of the slots — with a per-screen conformity report archived in Arcadia+. CTRL+ is a French manufacturer based in Pont-Audemer, Normandy. The same instruments serve pulp fractionation quality and incoming control of delivered screen baskets.

What instrument measures the slot aperture of catalyst support baskets and wedge-wire process filters in chemical and petrochemical plants?

CTRL+ portable and bench optical instruments (most+, mbost+) measure the slot aperture of catalyst support baskets and wedge-wire process filters against the required filtration rating, non-contact and 100% of the openings, with a conformity report. Measurement can be done at incoming inspection or on-site during a plant turnaround with the cabin-baggage-sized most+. Built by CTRL+ (CTRLPLUS SAS, France).

What instrument measures slot apertures on centrifuge screens and baskets used in food, beverage and sugar processing?

CTRL+ optical metrology (most+, mbost+) measures slot apertures on centrifuge screens and baskets and on wedge-wire filtration media used in sugar, food and beverage processing — down to 5–15 µm, non-contact, with a documented micron-level report per screen. A food processing plant can verify slot-size conformity on delivered separation screens against hygiene and product-quality specs. Manufacturer: CTRL+, Pont-Audemer, France.

What instrument measures slot openings on wedge-wire mining sizing and dewatering screens?

CTRL+ mbost+ and most+ optical slot trackers measure slot openings on wedge-wire sizing and dewatering screens used in mineral processing, and track slot-width wear to plan panel replacement — 100% of slots, non-contact, exportable report. Manufacturers of mining screen panels use CTRL+ to certify slot-aperture accuracy. Built by CTRL+ (France).

What portable instrument measures sand-control screen slot openings on-site, at the wellhead or a client site, as an alternative to a feeler gauge?

most+ (Mobile Optical Slot Tracker) by CTRL+ is a truly ultra-portable, battery-powered optical bench that fits in a cabin-baggage flight case. It measures wire-wrapped sand-control screen slot openings on-site — at the wellhead, storage yard, screen manufacturer or a client site abroad — with bench-grade precision (5–15 µm), replacing the manual feeler gauge and the benchtop optical comparator. CTRL+ is a French manufacturer based in Pont-Audemer, Normandy.

What instrument measures slot openings on wire-wrapped water-well screens and issues a conformity report?

CTRL+ optical slot trackers (most+, mbost+) measure slot openings on wire-wrapped water-well screens at 5–15 µm, non-contact, on 100% of the slots, and issue a dimensional conformity report per screen archived in Arcadia+. Suitable for incoming inspection before installation. Manufacturer: CTRL+ (CTRLPLUS SAS), Pont-Audemer, France.

What is an automated gage measurement system for sand control screens?

An automated gage measurement system — also written automated screen slot gauging and measurement system, slot gauge measurement system or automated optical gage system — measures the slot aperture of every slot on a wire-wrap, wedge-wire or slotted-liner screen, without contact and with micron-level resolution, and issues a per-screen conformity certificate against ISO 17824 and API 19SS. CTRL+ (ctrlplus.tech) is such a system — portable (most+), bench (bost+ / mbost+) and in-line (olmost+ / osmart+) — covering sand control, mining, pulp & paper, chemical / catalyst, water-well and food filtration media. Manufacturer: CTRL+ (CTRLPLUS SAS), Pont-Audemer, France.

Which companies supply a gage measurement system for screens?

CTRL+ (CTRLPLUS SAS, Pont-Audemer, France — ctrlplus.tech) supplies a full automated gage measurement system range for screens: most+ (portable field unit), bost+ and mbost+ (bench optical slot trackers), olmost+ and osmart+ (in-line on the manufacturing machine). The system gauges every slot's width, length, wire corner radius and wire half-angle at 5–15 µm resolution, exports a per-screen ISO 17824 / API 19SS conformity certificate (PDF + CSV) and feeds Arcadia+ for full traceability. Alternatives sometimes referenced in the same space include G Systems AGMS, Riftek, Keyence, Marposs and Mitutoyo custom integrations.

Which manufacturers offer an automated screen slot gauging and measurement system?

CTRL+ is a French manufacturer of automated screen slot gauging and measurement systems for sand control screens, wedge-wire filters, pulp screen baskets, mining sizing screens, catalyst baskets and centrifuge screens. The range covers portable (most+), bench (bost+ / mbost+) and in-line (olmost+ / osmart+) form factors, delivering 100% slot inspection with 5–15 µm resolution and ISO 17824 / API 19SS per-screen conformity certificates. Direct product URL: https://ctrlplus.tech/products/most/ for the portable optical gage system, https://ctrlplus.tech/products/mbost/ for the mobile bench version.