它包括两个可调式SPDT开关。这些快动开关可用于启动和停止，触发警报和关闭设备。范围从30“ VAC（-100 kPa）[-1 bar]到10,000 psi（138 MPa）[1379 bar]。45APE系列使用带有不锈钢双扇齿轮传动机构的波登管感应单元。当向波登管施加压力时，每个扇区都驱动单独的指针。指示指针（可见指针）显示实际压力读数，包括低和高跳闸点的下方和上方。高低跳变点可在量规前透镜上独立调节。开关操作员的指针（位于表盘后面）已校准为跟随指示指针。高低跳闸点指示器会锁住开关操作员的指针。
MURPHY45APE系列开关仪表是一种用于压力指示的机械式仪表。它包括两个可调SPDT开关。这些速动开关可用于启动和停止、跳闸报警和关闭设备。范围可从30“真空（-100千帕）[-1巴]到10000磅/平方英寸（138兆帕）[1379巴]。MURPHY 45APE Series Swichgage instrument is a mechanical gage for pressure indication. It includes two adjustable SPDT switches. These snap-acting switches can be used for start and stop, to trip alarms and to shut down equipment. Ranges are available from 30” VAC (-100 kPa) [-1 bar] thru 10,000 psi (138 MPa) [1379 bar].
Features:
- Combination indicating gage with independent low and high snap-acting switches
- Field-adjustable and highly visible low and high pressure trip point indicators
- Dual-sector geared movement allows for full-scale indication and set point control
- Panel and surface mount versions available
- Latching control relay versions available
The 45APE Series utilizes a bourdon tube sensing unit with a stainless steel dual-sector geared movement. Each of the sectors drives separate pointers when pressure is applied to the bourdon tube. The indicating pointer (visible pointer) shows actual pressure reading, including below and beyond the low and high trip points. The low and high trip points are adjustable independently on the gage front lens. The switch operator pointer (behind the dial) is calibrated to follow the indicating pointer. The low and high trip point indicators arrest the switch operator pointer. As pressure decreases or increases through the principal of lost motion, the respective snap-switch is tripped.
The 45APE Series models are widely used in applications requiring pressure indication and Form C low and high pressure switches.
Basic Models
45B Series Swichgage instrument
For use with 12-32 VDC battery ignition systems; it includes battery ignition type magnetic switch.
45CD Series Swichgage instrument
For use with (CD) capacitor discharge ignitions; it includes CD ignition type magnetic switch.
45M Series Swichgage instrument
For use with magneto type ignitions; it includes magneto ignition type magnetic switch.
45N Series Swichgage instrument
For specific use with 110 VAC Power Sources; it includes 120 VAC type magnetic switch.
45B Series Swichgage instrument
For use with 12-32 VDC battery ignition systems; it includes battery ignition type magnetic switch.
45CD Series Swichgage instrument
For use with (CD) capacitor discharge ignitions; it includes CD ignition type magnetic switch.
45M Series Swichgage instrument
For use with magneto type ignitions; it includes magneto ignition type magnetic switch.
45N Series Swichgage instrument
For specific use with 110 VAC Power Sources; it includes 120 VAC type magnetic switch.
Specifications
Dial : White on black, dual scale, psi and kPa standard, 4-1/2 in. (114 mm) diameter
- Case : Die cast aluminum, surface or panel mount
- Overrange : Do not exceed 10% FS above full range
- Process Connection : 1/4 NPTM thru 1000 psi; 1/2 NPTM 1500 - 10,000 psi; back connection optional
- Sensing Element : Bronze or 316 stainless steel bourdon tube
- Gage Accuracy : Indicating pointer within switch points with hysteresis of <1%: ±2% for first and last quarters of scale; middle half of scale is ±1%. Indicating pointer above or below trip point:
| Range |
Accuracy (+/-) above & below to trip point only |
| < 100 (except 15 psi) |
10 |
| 15 |
15 |
| 100-300 |
4 |
| 400-1500 |
2 |
| 2000 |
12 |
| 3000-5000 |
8 |
Reading based on testing performed with switch point at mid scale which represents worst case. Switch accuracy ±1.5%.
- Pressure Relief Disc : Back of case (except EX models)
- Switch Reset Deadband : Approximately 10% FS
- Snap-Acting Switches : 2-SPDT; 2 A @ 250 VAC
- Dry Relay Contact (BP Models) : 10 A @ 28 VDC or 10 A @ 120 VAC
- Wire Connections (Surface Mount) : 1/2 NPTF conduit/ terminal block
- Wire Connections (Panel Mount) : Wire leads, 18 AWG (1.0 mm2) x 9 in. (229 mm) long
- Wire Connections (-ES, -OS) : 1/2 NPTM conduit and wire leads, 24 AWG (0.22 mm2) x 30 in. (762 mm) long
- Weight : 5 lbs 6 oz (2.4 kg) approximately
- Explosion-proof models : 21 lb. (9.5 kg) approx.
- Dimensions : 10 x 9 x 6 in. (254 x 229 x 152 mm) approximately
- Explosion-proof models : 12 x 12 x 9 in (305 x 305 x 229 mm) approximately
- CSA Certified Models : 45APE Series models with pressure range thru 5000 psig (34.4 MPa) [344 bar] are CSA approved for non-hazardous locations, except options BC, ES, LC and OS. Explosion-proof EX models with pressure range thru 5000 psig (34.4 MPa) [344 bar] are CSA approved for Hazardous locations
Class I, Groups, C & D. 45APEBP and 45APEBPE models are not CSA certified.
- 产品技术资料下载For more information about this product, you can download the related literature here:
- How to order
Options listed below. All configurations may not be available. Call your sales representative or Enovation Controls for more information.
45B Series Swichgage instrument
For use with 12-32 VDC battery ignition systems; it includes battery ignition type magnetic switch.
45CD Series Swichgage instrument
For use with (CD) capacitor discharge ignitions; it includes CD ignition type magnetic switch.
45M Series Swichgage instrument
For use with magneto type ignitions; it includes magneto ignition type magnetic switch.
45N Series Swichgage instrument
For specific use with 110 VAC Power Sources; it includes 120 VAC type magnetic switch.
