JY850 Intelligent Digital Pressure Calibration Instrument

Product Overview: Measuring voltage and current, providing an independent 24V DC power supply. Cooperate with JY7000 digital pressure module to complete pressure calibration and precision measurement. Calibration equipment: HART intelligent pressure transmitter, ordinary pressure transmitter, pressure gauge, pressure switch, etc. Main features: * Won the invention patent "Low Impedance Current Limiting Anti High Voltage Protection Circuit", the measurement port can withstand 250V AC accidental entry, and the super strong protection circuit prevents damage to the instrument caused by misoperation; *Built in 24V DC circuit power supply and 250 Ω resistor; *The maximum load current of 24V DC power supply is 80mA.

Feature Overview

• The measurement port of the host can withstand the accidental entry of 220V AC;

• The host is equipped with voltage measurement, current measurement, and 24V DC circuit power output;

• Through the pressure interface of the host, combined with the JY7000 series pressure module, pressure measurement, pressure switch detection, and countdown pressure leak detection can be achieved;

• Calibrate ordinary pressure (differential pressure) transmitters;

• Calibrate the HART intelligent pressure (differential pressure) transmitter with a built-in 250 Ω resistor;

• Simultaneously display pressure and current measurement values;

• Pressure percentage display;

• Triggering switch operation;

• Multi functional and programmable unit conversion function, which can convert V and mA measurement values into other engineering units: (℃, ℉,%, kPa, MPa, psi, mmHg, mmHg)₂O、m³/s、m³/min、m³/h、L/s、L/h、L/min、m、？ ）；

• Provide 24V DC circuit power supply and measure the mA signal in the circuit;

• Can lock or unlock measurement values during measurement;

• When measuring numerical values, collect the minimum and maximum values and calculate the average value;

• Can store on-site detection data, use data download software to upload the data stored in the instrument to the computer for management;

• The host display screen and keyboard both have bright backlighting, suitable for use in dim environments;

• Powerful lithium battery 7.4V/4800mAh, the host can work continuously for more than 12 to 30 hours;

• Storage function: Storage capacity for 64 device numbers, 31 records/device numbers;

• Data download software: Upload the data stored in the instrument to the computer and export it to an Excel spreadsheet.

Key Metrics

Electrical measurement indicators (one year, ambient temperature 20 ℃± 5 ℃)★ Represents basic range gear

function	measurement range	Maximum allowable error of 0.01 level	Maximum allowable error of 0.02 level	resolution	input impedance
DC voltage measurement	±59.9999 V	± (0.008% reading+0.5 mV)	± (0.015% reading+0.5 mV)	0.1 mV	≥1 MΩ
	±5.99999 V ★	± (0.008% reading+0.05 mV)	± (0.015% reading+0.05 mV)	0.01 mV	＞500 MΩ
	±599.999 mV	± (0.008% reading+0.005 mV)	± (0.015% reading+0.005 mV)	1 μV
	±119.999 mV	± (0.008% reading+0.003 mV)	± (0.015% reading+0.003 mV)	1 μV
DC current measurement	±119.999 mA	± (0.01% reading+1 μ A)	± (0.015% reading+1 μ A)	1 μA
	±23.9999 mA ★	± (0.01% reading+1 μ A)	± (0.015% reading+1 μ A)	0.1 μA	<10 Ω
The detectable states of switch detection are: on/off; If the switch is equipped with inspection voltage, the voltage range is (1-12) V; Maximum output current of 24V DC circuit power supply: 80mA; Accuracy of 24V DC circuit power supply: 24V ± 5%; Pressure display digits: 4-digit, 5-digit, 6-digit can be set

Other indicators

project	specification
warm-up time	After 5 minutes of startup, the technical specifications are met
Electrical measurement connection	4mm gold-plated lantern plug
Side port connection	Pressure/24V DC HART/RS232 connection	aviation plug
	Charger connection	φ (5.5 × 2.5) mm DC port
Overall dimensions	（205x110x52）mm
weight	About 0.9kg
Operating Temperature	（-10~50）°C
Storage temperature	（-20~60）°C
relative humidity Maximum value without condensation	90% at 35 ° C; At 75% and 40 ° C; 45% at 50 ° C.
Battery Category Capacity	lithium battery pack 7.4V/4800mAh，36Wh
Battery lifespan	Charge and discharge more than 300 times
Battery charging time	About 4 hours
Battery usage time	12 hours (measurement, turn on circuit power 12mA, screen and button backlight on); 16 hours (measurement, screen and button backlight on).
Adapter input	（100-240）V AC，（50-60）Hz
Adapter output	8.6V DC/1A
display screen	3.7-inch monochrome dot matrix LCD display screen
Display Contrast	adjustable
button backlight	LED， closable