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四、規格及主要技術參數     1、使用環境溫度：-5℃～40℃     2、外接電源電壓：6V     3、掉電保護電壓：2.78V     4、靜態工作電流：<3μA

結構特點 電磁閥采用雙穩態結構型式，瞬時通電即可保持工作狀態。直流正向得電閥開通，反向得電閥關閉。

主閥與導閥之間設有特殊的隔離膜片，能阻擋燃氣及雜質進入導閥腔，延長了使用壽命且動作更，本結構受專利保護．

經國家防爆站檢測，導閥線圈總成符合ＧＢ３８３６．４－８３防爆標準，取得了防爆合格證，證號為ＧＹＢ９８５１５Ｕ  產品用途:與ＩＣ卡煤氣表配套，用作燃氣管道的二位式通斷切換；也可作為ＣＯ熄火保護報警器及大容量燃氣熱水器配套使用．

 美國 Meriam M201 旋轉式煤氣表測試儀的詳細介紹The new Measure Mode lets the M201 be used as a conventional differential pressure measurement device. Users will appreciate the live pressure display as they check the handheld’s zero or observe DP across rotary gas meters. And when a ｄrop test is made, the M201 uses an internal stop watch to measure the test length. The user only has to start ａnd stop the test; the M201 reports both the test time ａnd the average differential pressure measured during the test. Toggle the Min/Max key to see the minimum ａnd maximum DP measured during the test.Meriam’s M201 has new features to make ｄrop testing Rotary （Natural） Gas Meters even easier! New hardware options protect the M201 from one sided overpressure. Options include a ¼ turn valve manifold ａnd an integral push-to-read cartridge valve in addition to the traditional push-to-read valve manifold. More importantly, new operating features provide users with a live pressure display ａnd more automation to make field use easier than ever before.With hundreds of original M201s at work in the field, Meriam recognizes that some customers will want to continue using the legacy software to stay consistent within their company. The new M201 includes a Mode Selection menu option for Legacy or Enhanced modes – the users chooses which mode is best for them!Rotary Gas Meter Tester M201 AdvantagesAccuracyDN0028: ±0.1% FS 0-28”DN0200: ±0.05% FS 0-200”No temperature effect from 23º to 122ºF （-5º to +50ºC）.Engineering UnitsInches of H2O （ｓelect 4ºC, 20ºC, or 60ºF）, PSI, mm of Hg, inches of Hg, mBars, Bars, kPa, kg/cm2, cm of H2O ａnd user selectable scaling.Media CompatibilityDN: Non-isolated differential sensor for clean, dry, non-corrosive gases.Field Re-calThe M201 can be recalibrated in the field for zero, span, ａnd linearity. The user has the option to ｓelect a 1 point or 5 point calibration procedure. Enables users with accurate primary standards to calibrate their devices locally if desired.Pressure LimitsTwice range on Differential （DN） units when pressurized on high side only ａnd 150 PSI （10.5 Kg/cm2） static when applied to both sides of the sensor simultaneously.Min/Max CaptureCapture speed is 10X per second.OperationEnchanced - A push-to-read or 1/4 valve assembly keeps HI ａnd LO sides equalized during connection across meter. Turn M201 "ON" to get message "Press Hold to Acquire Data." Press "Hold" key to start test. User determines test time, ending test by pressing the "Hold" key again. Display will show the test time ａnd averaged differential pressure across the meter during the test. Press the "Hold" key again to start a new test.  Legacy - A push-to-read valve keeps HI ａnd LO sides equalized during connection across meter.  Turn M201 "ON" to get message "Press Hold to Acquire Data."  Press "Hold" key to start test.  User determines test time, ending test by pressing the "Hold" key again.  Display will show the averaged differential pressure across the meter from test start to test stop.  Press the "Hold" key again to start a new test. Auto Shut-OffUser selectable shut-off. Programmable at 10, 20, 30, 45, 60 minutes ａnd disable.Ordering InformationModel Number & DescriptionM201 （specify pressure range） Rotary Gas Meter Tester （only available with DN0028 or DN0200 sensor range）Specify valve type: PTR （Push-to-Read Assembly）                             IPTR （Integral Push-to-Read Valve）                             QTV （1/4 Turn Valve Assembly）All Models Include• Protective Red Boot• 4 AA Alkaline batteries• Hard copy user’s manualOrder Options Z9A000069                Hard Carrying Case Z9P000108                 Hard Carrying Case with Vacuum Pump Z9P000109                 Hard Carrying Case with Pressure Pump ZA34386                    Connector Kit ZA900016-90727       Pete’s Plug Adapter Kit Y 1/8” Needle ZA900016-90733       Pete’s Plug Adapter Kit Y 1/16” NeedleZA36853                    Push-to-Read ManifoldZ9A000001                Integral Push-to-Read ValveZ9A156                      1/4 Turn Valve ManifoldThe digital display eliminates parallax errors, ａnd depending on the range of the gauge, it can have a resolution of 0.01 or 0.001” H2O. A min/max feature also allows the user to see the minimum ａnd maximum pressures recorded during the test. The unit is portable, ａnd with the integral push to read manifold, the M201 Rotary Gas Meter Tester can safely be used with lines having a static pressure of up to 150 PSIG.

煤氣表防盜卡扣，自來水表防盜扣，一次性防盜卡扣，