Portable digital pressure calibrator

Portable digital pressure calibrator

I. Overview

l 、

As a multifunctional instrument, it can measure: ± 25mADC current or ± 50VDC voltage while measuring pressure. The pressure switch is tested and automatically records the pressure switch value, with large and small value recording functions. It has a 24VD output and can be used as a power supply for 4-20mA two-wire transmitters.

Portable digital pressure calibrator

2. Using a 24 bit high-performance A/D converter combined with a high-performance microprocessor to continuously adjust the various performance and technical indicators of the instrument, ensuring that the instrument can be used over a wide temperature range for a long time without affecting its accuracy.

3. Low power consumption, the battery adopts imported high-energy lithium batteries, with an aluminum alloy casing and a silicone rubber protective cover, which has a beautiful appearance, is sturdy and durable, and has strong anti-interference ability.

4. Intelligent charging, with automatic shutdown and protection functions for battery overcharging and undervoltage. The low-power shutdown protection function protects the instrument from battery energy damage when not in use for a long time, ensuring the longevity of the battery. It has a battery level display that can provide real-time information on battery usage.

5. The instrument has rich range functions and can be used for multiple purposes.

6. Adopting thin film panels and imported tactile switches, the style is novel and the button life is long.

7. Backlit LCD multi-channel display with low power consumption and long lifespan.

8. The digital calibration of pressure, current, and voltage does not require any hardware adjustment, and can be directly operated on the panel to calibrate zero and full range.

9. Built in six digit high-precision DC digital voltage and current meter.

1. Equipped with RS-23 or RS-485 interfaces, it can communicate with the upper computer, transmit real-time measurement data to the inspection software, record data, automatically generate tables, calculate errors, and store and print inspection data. Can calibrate pressure transmitters, pointer pressure gauges, pressure switches (pressure controllers), etc.

4、 Technical instructions

1. Pressure range: -0.1~60MPa (range selection is shown in the attached table). Multiple intelligent digital pressure modules can also be optionally selected, with unlimited quantity and range, and easy automatic recognition and use (module selection is shown in the attached table). Optional gauge pressure, absolute pressure, or differential pressure measurement can be used in combination with manual pumps or pressure calibrators to calibrate pressure transmitters, spring tube pressure gauges, pressure switches, etc

2. Resolution: Pressure: MiPa, Current: 0.1 μ A, Voltage: 0.1mV

3. Current measurement range: ± 25.0000 mA, voltage measurement range: ± 50.0000 V

4. DC power output: 24VDC ± 10%, high load current 50mA

5. Accuracy: Pressure: 0.05% F • S or 0.02% F • S

Voltage and current: (0.01% R.D+0.005% F • S)

6. Temperature measurement range: -55~125 ° C

7. DC working time: ≥ 150 hours, depending on the working conditions

8. Display: 5 or 6 digits optional

9. Relative humidity: ≤ 80% RH

10. Overload capacity: 1.2-1.5 times the upper range limit

11. Dimensions: The instrument has an outer diameter of 155mm and a thickness of 47mm (the size of the external silicone rubber protective sleeve, the outer diameter of the sensor nozzle is 28mm, and the length is 80mm)

12. Weight: 1000g

13. Power supply: 3.7V/3000mAh lithium battery, charging voltage 5V, with battery level display function, easy to understand battery usage

14. Pressure medium: Within the range of -1000kPa to -250kPa, the pressure medium can only be a dry and non corrosive gas. Within the range of 0.4MPa to 60MPa, the pressure medium is a liquid (gas) compatible with 316L stainless steel