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STANAG 4617
STANAG 4617 miniaturised piezo-electric pressure gauges
Manufacturers of chamber-pressure gauges, and the gun, tank-gun and mortar ammunition producers and test ranges that use them to prove firing pressures.
STANAG 4617 is the NATO agreement covering miniaturised piezo-electric pressure gauges used to measure chamber pressure in guns, tank guns and mortars. NATO has not released it publicly; this page describes it from the Czech defence standard that implements it.
- Edition
- 1
- Published
- 2007-03-22
NATO has not released this STANAG publicly. It is NATO UNCLASSIFIED, and organisations that need it obtain it through their national standardization authority.
What it is
STANAG 4617 is the NATO Standardization Agreement on miniaturised piezo-electric pressure gauges. Edition 1, promulgated on 22 March 2007 under NATO's CNAD, AC/225 NAAG, ICGIF, covers the publication AEP-51. NATO has not released STANAG 4617 or AEP-51 publicly. This page describes them from a public national implementation, the Czech defence standard ČOS 102506 (1st edition, amendment 1, 2024), which states that it introduces STANAG 4617 Edition 1 and AEP-51. A national implementation can add national requirements and reservations, so treat what follows as the Czech implementation's content, not as NATO's own text.
According to ČOS 102506, the standard's purpose is to make pressure measurements taken during the production or testing of guns, howitzers or their ammunition in one NATO state acceptable to other NATO states, by showing that the stated pressure limits are met and firing safety assured. It applies to all pressure measurements made with miniaturised piezoelectric sensors when technically testing guns, mortars and their ammunition, whenever those measurements are passed to another NATO member state; only gauges listed in AEP-51, which the working group NAAG LG4/SG2 revises regularly, may be used for them.
What the Czech implementation requires of a gauge
ČOS 102506 describes the gauge as an autonomous sensor, fitted into a propelling charge or cartridge case during manufacture or inserted into the chamber, consisting of a steel housing holding a piezoelectric sensor and a battery-powered electronic micromodule; it records the chamber's gas-pressure curve against time, and after firing it is removed and connected to a computer to read out the recorded signal. It sets maximum gas pressures and gauge volumes by weapon: for a gun, 500 MPa and a maximum volume of 30 cm3 (15 cm3 preferred); for a tank gun, 800 MPa and 30 cm3; for a mortar, 150 MPa and a maximum volume of 10 cm3 (1.8 cm diameter). For cased ammunition, guns and tank guns also carry an operating-temperature requirement of -46°C to +65°C. Common requirements across all three weapon types cover dynamic measurement uncertainty (2% at 2σ), sampling frequency (0.1 to 100 kHz), recording duration (at least 80 ms), resolution (at least 12 bits), a standby time of 48 hours, a measurement time of 3 hours and a data-transfer time of 1 hour, static calibration of the sensor in its housing, battery and trigger checks, reuse of a gauge across successive rounds, and resistance to shock and vibration in tank ammunition.
How a new gauge type is qualified
A new gauge type is qualified against results from static calibration of the piezoelectric sensor, to the method in ITOP 3-2-810(1), a check of the electronic part, and dynamic and firing tests, including comparison of the complete gauge against two reference gauges at 65% of its measuring range and, as a supplementary test, near the top of its range. The testing state reports each new gauge's dimensions, verified pressure and detailed test results to the NATO subgroup AC/225-LG/4-SG/2, which decides whether to add it to the AEP-51 list. Gauges already in service are re-calibrated periodically, at 100 rounds or 1 year.
How we help
A supplier bound by STANAG 4617 through a contract holds the obtained text through its national authority. In ComplyTrain you record the requirements that apply to you as your own requirements, give each an owner, and keep the evidence that shows you meet them against each one.
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