A multigas detector may have several measurement channels in one body, but the calibration conditions can differ by channel. If you provide only the instrument model name, it may be unclear which gas and range you want calibrated, so the quotation or acceptable intake scope may need to be clarified. To understand cost and turnaround, first identify the result needed for each channel.
Define measurement conditions separately for each gas channel
Each channel may have a different target gas and measured quantity, depending on the sensor. For example, oxygen may be displayed as a volume ratio, while carbon monoxide may use ppm. If units differ, the numbers cannot be compared directly, and a reference gas used for one channel does not establish the measurement relationship for another. So a calibration request should specify not only the gas name but also the measurement range and points at which you need results.
Suppose a detector has oxygen and carbon monoxide channels, but the delivery recipient specifies only the carbon monoxide channel. The oxygen result does not satisfy that requirement. Conversely, that does not mean every channel must automatically be included in the request. A calibration point is a condition under which the instrument indication is compared with a particular value provided by a standard; a result at one point cannot be extended to confirm other concentration conditions. The result answers a different question depending on whether the recipient requests one point or several points within a range, so define the requested scope first.
If several points within a range are checked, standard gas and result records may be needed for each point. Which points to select depends on the instrument and procedure, and on the range the recipient wants to confirm. The number of points alone does not determine cost, but it can affect the work scope because preparation and recordkeeping may differ.
Measurement channels and KOLAS accredited scope are different information
The product configuration shows which sensors and channels are included in the instrument body. A KOLAS accredited scope identifies the fields and measurement ranges for which a calibration body is accredited. The fact that an instrument has a particular channel does not establish that its measurement is within the body’s accredited scope. Conversely, even if a body is accredited for calibration of a particular gas, that does not mean every instrument configuration and range can automatically be accepted. Compare each channel’s gas and requested range with the provider’s current accredited scope and actual intake conditions.
After calibration results are available, adjustment to change the indication or repair of a fault may be needed. Adjustment changes the measurement system; repair is separate work to restore damage or a fault. Check the quote and intake conditions to see whether such work is included in basic calibration. For example, even if a result at a reference point differs from the request, do not assume that adjustment or sensor repair has automatically been performed. The work approved and the result received need to be distinguished.
For example, if the provider’s accredited carbon monoxide range overlaps only partly with the range requested for the instrument channel, the overlap alone does not satisfy the entire request. Compare the units, limits, and conditions in the actual accredited scope with the requested range. This comparison determines what calibration work and documents can meet the requirement; it cannot be replaced by the mere presence of a product channel or general statements about the provider.
Compare quotes and turnaround using the same work scope
Different work conditions may change which standard gases are prepared for a particular gas, the measurement points compared, and which results are recorded in the certificate. Measurement and reporting need to cover the requested items. Quantity, instrument condition, and whether additional work follows inspection can also affect the schedule. There is no basis for multiplying a fixed price by the number of channels or assuming completion within a set number of days. Actual price and delivery timing are determined after confirming the model, range, and document requirements for intake.
Consider two hypothetical quotes. One checks only a single point on the oxygen channel; the other includes several points on oxygen and carbon monoxide channels plus a certificate. It is difficult to judge which is more expensive from the total alone because the two amounts cover different measurement questions. To compare them, first check whether gas channels, ranges, calibration points, and certificate conditions match, and distinguish whether possible adjustment or repair is included.
If a quote uses only a broad phrase such as “all multigas channels,” confirm which channels are actually being measured. For example, even if all sensors are installed in an instrument, the range and calibration points requested by the recipient may apply to only some channels. Clear channel-by-channel work details make it possible to compare certificate results with the requirement and to understand the schedule separately from basic calibration if further inspection or adjustment is needed.
Even if the instrument serial number is correct, you cannot assume that every channel is included on the certificate. Compare the equipment identifier and results by channel to confirm the submission scope. Tell AI Safety Korea Co., Ltd. the channels for each instrument and the result document requested by the delivery recipient, and we can check whether that scope can be accepted and confirm the actual cost and schedule.
Ask about KOLAS calibration scope by channel