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1. Technical parameters of gas turbine flowmeter
Nominal diameter: Pipeline type: DN4~DN200 Insertion type: DN100~DN2000 Accuracy level: Pipeline type: ± 0.5 level, ± 1.0 level Insertion type: ± 1.5 level, ± 2.5 level Environmental temperature: -20 ℃~50 ℃ Medium temperature: Measuring liquid: -20 ℃~120 ℃ Measuring gas: -20 ℃~80 ℃ Atmospheric pressure: 86KPa~106KPa Nominal pressure: 1.6 Mpa, 2.5 Mpa, 6.4 Mpa, 25 Mpa Explosion proof grade: ExdIIBT4 Connection method: threaded connection, flange clamping, flange connection, insertion type, etc. Straight pipe section requirements: Gas: The upstream straight pipe section should be ≥ 10 DN, downstream straight pipe section should be ≥ 5DN Liquid: upstream straight pipe section should be ≥ 20DN, downstream straight pipe section should be ≥ 5DN Insertion type: upstream straight pipe section should be ≥ 20DS, downstream straight pipe section should be ≥ 7DS (DS is the measured inner diameter of the pipeline)
(1) Remote display: pulse output, current output (with display instrument)
(2) On site display: 8-bit LCD displays cumulative flow rate, unit (m3), 4-digit LCD displays instantaneous flow rate, unit (m3/h), battery level, frequency, flow rate
(3) Temperature and pressure compensation type: A, displays standard instantaneous flow rate and standard cumulative flow rate B, displays current pressure, temperature, battery voltage
(1) Pulse output, The p-p value is determined by the power supply
(2) 4-20mA two-wire current output
(3) Unit volume pulse output and sensor raw pulse output
(4) Equipped with RS485 communication interface
(1) DC5-24V
(2) Standard 3V lithium battery installed inside the instrument can be con
(3) Temperature and pressure compensation type 3V lithium battery installed inside the instrument can be continuously used for more than four years
Transmission distance: The distance from the sensor to the display instrument can reach 500m3.1 Basic parameters: 3.1.1 Instrument caliber and connection method 25, 40, 50, 80, 100, 150, 200, 250 use flange connections.
5, 40 can use threaded connections with accuracy levels of ± 1.5% R and ± 1% R, with a range ratio of 1:10.
; 1:20； 1: 30 display mode: widescreen display simultaneously displays instantaneous flow, daily cumulative flow, total cumulative flow, temperature, pressure, time, date, battery level. Instrument material: 304 stainless steel; Impeller: anti-corrosion ABS or high-quality aluminum alloy; Display: Cast aluminum temperature and pressure sensor, built-in measured medium temperature (℃) -30 ℃, socks~+80 ℃, environmental conditions: medium temperature: -30 ℃~+80 ℃, relative humidity 5%~90%, atmospheric pressure 86~106Kpa, communication signal three wire working condition pulse, three wire standard condition pulse, three wire 4-20mA, RS485 protocol, IC card signal power supply, built-in lithium battery, external 24VDC dual power supply, transmission distance ≤ 1000m, signal line interface, internal screw end, scratch M20 × 1.5 explosion-proof level ExdIIBT6 protection level IP65 3.1.2 accuracy level1.0 level, 1.5 level 3.1.3 usage conditions: · Environmental temperature: -30 ℃~+60 ℃; ·Atmospheric pressure: 86KPa~106KPa; ·Medium temperature: -30 ℃ to+80 ℃; ·Relative humidity: 5%~95% 3.3 Instrument selection 1. Selection instructions: When selecting, users should reasonably choose the mode
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