Yokogawa CA700 pressure calibrator

（3） Maintenance and disposal

Regular maintenance: It is recommended to replace the backup lithium battery (for memory backup) every 5 years and contact the dealer for operation; To ensure measurement accuracy, it is recommended to calibrate once a year. For details on measuring DC voltage/current and calibrating the source function, please refer to the IM CA700-01EN manual.

Equipment disposal: Abandoned equipment must comply with the laws and regulations of the country or region where it is located and cannot be discarded at will; Batteries need to be disposed of separately according to local waste battery disposal standards to avoid environmental pollution.

Technical parameters

（1） Core functional parameters

Pressure measurement: Different models have different measurement ranges. The -01 model has a positive pressure of 0-200kPa and a negative pressure of -80~0kPa, the -02 model has a positive pressure of 0-1000kPa and a negative pressure of -80~0kPa, and the -03 model has a positive pressure of 0-3500kPa and a negative pressure of -80~0kPa; The accuracy after 6 months of zero drift is ± (0.01% reading+0.003kPa) (20-200kPa)/± 0.005kPa (0-20kPa), ± (0.01% reading+0.04kPa), ± (0.01% reading+0.15kPa) for positive pressure, and ± (0.2% reading+0.08kPa) for negative pressure; The resolutions are 0.001kPa, 0.01kPa, and 0.01kPa respectively, with a response time of ≤ 2.5 seconds. The allowable input pressures are 2.7kPa absolute pressure to 500kPa gauge pressure, 2.7kPa absolute pressure to 3000kPa gauge pressure, and 2.7kPa absolute pressure to 4500kPa gauge pressure. The measuring medium is non corrosive, non flammable, non explosive, and non-toxic gases and liquids, with a medium temperature of -10~50 ℃ (liquid 5~50 ℃).

DC current/voltage source: current source (20mA range) accuracy 0.015% set value+3 μ A, analog output accuracy is the same, compliance voltage 24V (HART resistor OFF)/18V (HART resistor ON); Voltage source (5V range) accuracy 0.015% set value+0.5mV, load current ≤ 1mA; temperature coefficient is accuracy × (1/10)/℃ (-10~20 ℃, 26~50 ℃), source load needs to meet C ≤ 0.1 μ F, L ≤ 10mH, ground voltage 42Vpeak, current limit about 30mA, supports step and linear scanning.

DC current/voltage measurement: current (20mA range) accuracy 0.015% reading+3 μ A, 100mA range accuracy 0.015% reading+30 μ A; Voltage (5V range) accuracy of 0.015% reading+0.5mV, 50V range accuracy of 0.015% reading+5mV; circuit measurement provides 24V ± 1V (HART resistor OFF)/24V ± 6V (HART resistor ON) power supply, measurement accuracy of 0.015% reading+3 μ A, temperature coefficient same source function, common mode suppression ratio of about 120dB (50/60Hz), series mode suppression ratio of about 60dB (50/60Hz), input terminal with PTC protection, maximum input voltage of 50Vpeak, current of 120mA.

（2） General parameters

Storage capacity: Manual storage, logging, and leak testing can each save 2000 pieces of data. As Found and As Left for transmitter calibration (5 points) can each save 9 pieces of data, and pressure switch calibration can each save 1 piece of data. The total number of files is up to 250, with a total data volume of approximately 3.5MB.

Display and interface: Dot matrix LCD display screen (320 × 240 pixels), LED backlight, display update rate of about 300ms/time; Supports USB A (storage device) and USB mini B (communication/storage) interfaces, with external sensor interfaces used to connect dedicated sensors.

Physics and Environment: Dimensions approximately 264mm (width) x 188mm (height) x 96mm (depth), weight approximately 2kg; operating temperature and humidity -10~50 ℃, 20%~80% RH (non condensing), storage temperature and humidity -20~60 ℃, 20%~80% RH (non condensing); Insulation resistance ≥ 100M Ω (500VDC), withstand voltage 500VAC/1 minute, in compliance with EN 61010-1 safety standard, EMC in compliance with EN 61326-1 Class A, EN 55011 Class A standards, and in compliance with the EU RoHS directive.