What standard calibration devices are used for various instruments in the workshop?

Generally, a 744 is enough to handle everything.

For certification purposes, it is required that all measuring devices be calibrated or verified in accordance with specified standards, which is generally very difficult to achieve. Ordinary pressure gauges, transmitters, and thermometers can be calibrated or verified as long as corresponding standards are established; such devices can be sent to higher-level authorities (departments with the authority or authorized to do so) for verification. The main challenge lies in online flow meters – devices such as orifice plates and vortex flow meters that cannot be removed from the installation – as these cannot be calibrated or verified.

Bro, you seem very familiar with the F744. I’m from Fluke Company; thank you for helping us promote it :handshake :kiss: long.li@fluke.com

I recommend that place as the standards there are of good quality

We have been working on the calibration of local pressure gauges recently

Fluke’s reference standards are quite good; they are generally portable, with a typical accuracy of 0.025%, making them suitable for use in businesses and on-site. Of course, Fluke also has desktop models, which are generally used by metrology institutes. The product’s performance is excellent; it’s just the price that’s an issue. long.li@fluke.com

After reading the comments from those above, I went and checked it out; it seems that the problem raised by the original poster can be solved using Fluke devices. Below is a reproduction of the relevant information: The above information comes from the official website: http://www.fluke.com.cn/cnzh/home/default.htm. Regarding Fluke: As smart transmitters are increasingly used in the process industry, there is a growing demand for new types of calibrators that can communicate via industrial standard digital protocols. The Fluke 744 features multi-functional calibration and HART communication capabilities. This instrument is robust and durable, making it an ideal tool for calibrating, maintaining, and servicing HART and other instruments. The Fluke 744 is multi-functional – with just one compact handheld instrument, it can measure various parameters such as source output, analog and digital pressures, temperature, and electrical signals. In terms of recording, the Fluke 744 can automatically generate calibration procedures and capture data. Of course, it can also help you meet strict standards such as ISO9000, FDA, EPA, and OSHA. Used to measure voltage, current (mA), RTD, thermocouples, frequency, and resistance of sensors, transmitters, and other instruments. Voltages, currents (mA), thermocouples, RTDs, frequencies, resistances, and pressures required for output/analog transmitter calibration. While measuring current, a circuit power supply is provided for the transformer. 29 Fluke 700Pxx pressure modules are used to measure/output pressure. As-found/as-left procedures are developed and executed to meet the quality plan and regulations. Record the measurement results in the selected file format. The downloaded programs and calibration results can be saved for up to a week. It features various functions, including automatic stepping, custom measurement units, data entry during testing, single-point and two-point measurement modes, square root DP flow testing, and programmable measurement delays. Easy to use, with a three-year warranty; it features high-brightness dual displays that allow simultaneous viewing of source parameters and measurement values. It has a multi-language operation interface, and the rechargeable nickel-metal hydride battery enables 10 hours of continuous operation. It includes a battery power management circuit. It is suitable for testing rapid-pulse RTD transmitters and PLCs, with pulses as short as 1 ms. With DPC/Track sampling software. Compatible with various Asset Management software packages