1 Introduction

CWY300-the intelligent digital pressure calibrator is developed and manufactured with independent intellectual property right, it is mainly used for calibrate pressure transmitters, pressure switches (controllers), the general pressure gauges, precise pressure gauges, blood pressures, or other pressure instruments, and can also be widely used in the precise measurement of pressure.

2 Performance indicators

1. Pressure measuring range: -100kPa～60MPa,  
2. Accuracy: 0.02%F.S,   0.05%F.S,  0.1%F.S,  0.2%F.S
3. Current measuring range: (0～22)mA  accuracy: 0.02,  0.05
4. Voltage measuring range: (0～5.5)V,  accuracy: 0.05
5. Resistance measuring range: (0～20)Ω, accuracy: 1
6. The built-in power supply DC24V
7. Calibration results memory: 28/56 files, 40pcs record/file. 20pcs before and after adjustment
8. Clock function
9. Pressure unit: kPa, psi, inHg, inH2O, mmHg, mmH2O, MPa, bar, mbar, atm, kgf/cm2, , Pa, total 12 options
10.  Pressure overload: It will display overload and warn when pressure measurements are over 110% F S.
11. Ambient conditions:

         a. Temperature: (-5~50)℃;

         b. RH(relative humidity): ＜95%;

         c.atmospheric pressure: (86~105) kPa

1. Compensation temperature: (-5~50)℃
2. Storage temperature: (-30~80)℃
3. Display: LCD screen with white backlight, 5 digits display
4. Power supply mode: 3.7V/3500mAH Lithium battery
5. Auto power-off: Auto power-off after 20 minutes if there is no operation and the pressure change is less than 1% of the range within 1 minute.
6. Communication serial port configuration: Baud rate: 57600;  check bit: no,   data bits: 8 bits;    stop bits: 1 bit;

       It can be used with CWY automatic pressure calibration station as its external pressure module, communicate with TMMS2000 and automatically print verification report.

1. External dimension: gauge head:φ108mm×43mm, overall length: 170mm
2. Weight: about 0.6kg;
3. Pressure connection: M20×1.5 (It can be customized according to user’s requirements eg.NPT); Φ6mm quick socket(differential pressure model);
4. Power connection: φ6 standard banana plug;
5. Additional function: temperature test with ±0.1℃
6. HART function