I. Overview ZHY300A1 series digital pressure gauge for the whole electronic structure, battery-powered, on-site installation easy. Front-end precision piezoresistive pressure sensor, the output signal from the high-precision, low drift amplifier processing into high-precision A / D converter, the microprocessor can be converted into a digital signal processing, through the arithmetic processing by LCD display shows the actual pressure value. The intelligent digital pressure gauge flexible, easy to operate, easy to debug, safe and reliable. Widely used in water and electricity, water, petroleum, chemical, mechanical, hydraulic and other industries, the pressure of the fluid medium to be measured is displayed. Second, characteristics ◆ Large-screen LCD display, high resolution, ignoring the error. ◆ peak hold function to record measurements during a percentage of the maximum pressure value ◆ pressure dynamic display (progress bar shows) ◆ five kinds of engineering unit selection: psi, bar, kpa, kg / c㎡ Mpa ◆ Select 1 ~ 15min automatic shutdown. ◆ micro-power, the power-saving mode can be more than 2 years of continuous work 2000 hours. ◆ correction function parameters, field instrument capable of zero, the error correction ◆ ◆ define the upper and lower sampling rate range: Pressure 1/3 seconds ◆ for a variety of gases and liquids compatible with stainless steel measuring Third, the technical parameters: Measuring range 0 ~ 100MPa accuracy class 0.5% to 200% overload capacity type pressure gauge stability ≤0.1% / year battery voltage 9VDC Display LCD display range -1999 to 9999 Ambient temperature -20 ℃ ~ 70 ℃ Relative humidity ≤80% Mounting thread M20 * 1.5 Interface Material Stainless steel four, five dimensions, installation ZHY300A1 by pressure fittings (M20 * 1.5) (other sizes available when ordering joints), directly mounted on the hydraulic piping. In critical applications (such as severe vibration or shock), pressure fittings can be performed by micro-mechanical decoupling hose NOTE: Range must be mounted vertically less than 100KPa six instructions:. ◆ open, off: short press "ON / OFF "button ◆ Unit switch: Press" ON / OFF "key ◆ Peak cleared: Press" ZERO "key ◆ Display cleared: Press" ZERO "key (Note: This feature only state in the absence of pressure to use) ◆ Automatic shutdown time setting: Press the "ZERO" "ON / OFF", pay the screen display "LOCK", enter 1000 (short press "ZERO" to modify the current value flashes, press Shift), press the "ON / OFF "button to confirm, pay display offt, the current value of the revised to require automatic shutdown time, press" ON / OFF "button to confirm exit. 00- continuous work. 01 to 15 for the auto-off time. Seven of Use: storage and use of appropriate instruments at an ambient temperature of -20 ℃ ~ 70 ℃, humidity less than 80% now occasions meter connector connecting pipeline should be in service level possible concentric use 9V alkaline battery replacement. battery. VIII Ordering Information: Ordering should indicate the range, accuracy class, port size nine, quality user in compliance with conditions of use and protection rules, instruments from the date of the present one-year warranty from the company after a year of maintenance. The company always welcome customers letter to inquire and make recommendations.