1 Technical Description
    The pHB-2 pH Meter Calibrator is a fully digital high-precision instrument designed according to the requirements of "JJG119-2005 Verification Regulation for Laboratory pH (Acidity) Meters." It meets the technical specifications of 0.0006pH accuracy as per "JJG919—96 Verification Regulation for pH Meter Calibrators" and can calibrate various laboratory pH meters below class 0.001, portable pH meters, and general laboratory ion meters that can be used as pH meters.
     The pH Meter Calibrator features an RS232C interface, enabling connection to a microcomputer for computer-controlled calibration, automatic data recording, and data processing. It also supports programmed automatic calibration. When connected to the electrical unit of the pH meter under test, the calibrator automatically outputs standard signals according to the JJG119-2005 verification items, significantly improving work efficiency. Manual calibration is also supported. Additionally, the pH Meter Calibrator uses serial EEPROM memory to achieve digital calibration of the instrument.
2 Main Technical Specifications
pH output range: 0–14.0000;
pH indication error: 0.0005pH (0–14.0000);
mV output range: -2000.00mV to +2000.00mV;
mV resolution: 0.02mV;
Temperature compensation range: 0°C–99.9°C.