This manual describes the use of Vaisala CARBOCAP® Carbon Dioxide Calibrator (GM K220), including safety, product description, operation and technical data.
This guide provides general information, safety warnings and warranty details for the GMK220 calibrator used with GMP220 series CO₂ probes. It outlines the purpose of the device, required additional equipment, and the basic concepts of spot checking and two‑point calibration.
The operation chapter describes step‑by‑step procedures for spot checking, including cable connections, chamber insertion, serial communication settings (9600 baud, 8 None, 1 stop bit) and power supply requirements (24 VDC). Technical data such as supply voltage, temperature and pressure accuracy, and gas concentration tolerances are also listed.
| Supply Voltage | 24 VDC |
|---|---|
| Serial Baud Rate | 9600 baud |
| Serial Parity | 8/None |
| Serial Stop Bits | 1 stop bit |
| Ambient Temperature Accuracy | ±0.5 °C |
| Barometric Pressure Accuracy | ±1 hPa |
| Calibration Gas Accuracy | ±1 % (or better) |