Murphy 20PWC, A25PWC specifications Description, Pecifications, Warranty

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FRANK W.

®

PWC-94125B

 

Revised 02-97

 

 

 

 

Catalog Section 05

 

MFR.

(00-02-0033)

 

 

 

Low Pressure SWICHGAGE®

20PWC, 25PWC and A25PWC Series

2 and 2-1/2 in. (51 and 64 mm) Dial

For Monitoring Fuel Gas Pressure or Engine Crankcase Pressure

Actuate Alarm or Shut Down System When Abnormal Pressure Occurs

Combination Indicating Gage and

Critical Limit Switch

20PWC-10

Description

The PWC Series SWICHGAGE® is excellent for low pressure applications such as engine shutdown when fuel gas pressure falls to low level. Suitable for both natural gas or methane–these SWICHGAGE® instruments can also be used to monitor high engine crankcase pressure (order option “H”).

The 20 and 25 series gage mechanism is enclosed in a steel case coated to resist cor- rosion. The 20 series has a 2 inch (51 mm) diameter dial. The 25 series has a 2-1/2 in. (64 mm) diameter dial.

The A25 series gage has a sealed polycar- bonate case and includes a 2-1/2 in. (64 mm) diameter dial.

All gages feature a polycarbonate, break- resistant lens and a polished, stainless steel bezel to help protect these rugged, built-to- last instruments.

The PWC series is available in either the SWICHGAGE® version with adjustable high and/or low switch contact(s) or in the indi- cating MURPHYGAGE® configuration. The SWICHGAGE® incorporates an accurate direct-reading gage with a limit switch (low contact for fuel gas pressure; high contact for crankcase pressure) that can be adjusted from the front of the gage. The switch can be used to activate alarms and/or shut down equipment.

pecifications

Ranges: 20PWC Series

0-4 in. H2O; single scale

0-10 in. H2O; single scale

0-20 in. H2O / 0-51 cm; dual scale

0-30 in. H2O / 0-76 cm; dual scale

0-50 in. H2O / 0-127 cm; dual scale

25PWC and A25PWC Series

0-30 in. H2O / 0-76 cm; dual scale

0-50 in. H2O / 0-127 cm; dual scale

Contact Rating: 2 A @ 30 Volts AC/DC.

Accuracy: ±3% first and last 1/3 of scale, ±2% middle 1/3 of scale.

Maximum Pressure: 2 x scale.

Process Connection: 1/8-27 NPTM brass.

Dial: White on black; single scale (inches) and dual scale (inches/centimeters).

Limit Switch Adjustment: 1/16 hex wrench.

Mounting Hole: 2-1/16 in. (52 mm).

Bezel: Polished stainless steel.

Lens: Polycarbonate.

Mounting Studs: 10-32 UNF.

Case:

20PWC and 25PWC Series: Plated steel.

A25PWC Series: Polycarbonate.

Wiring (SWICHGAGE® Only):

20PWC Series: One point,

#6 terminal block, case ground.

25PWC Series: Wire lead; 18 AWG x 12 in. (1.0 mm2 x 305 mm).

A25PWC Series: #6 terminal block.

Mounting Clamp: Plated steel.

Shipping Weight:

20PWC Series: 9 oz. (279 g).

25PWC and A25PWC Series: 11 oz. (342 kg).

Shipping Dimensions:

20PWC Series:

3 x 2-3/4 x 2-3/4 in. (76 x 70 x 70 mm).

25PWC and A25PWC Series:

4-3/4 x 4-3/4 x 2-3/4 in. (121 x 121 x 70 mm).

Warranty

A two-year limited warranty on materials and workmanship is given with this Murphy product. Details are available on request and are packed with each unit.

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Contents Description WarrantyPecifications Range Base ModelOptions†

25PWC, 20PWC, A25PWC specifications

The Murphy A25PWC, 20PWC, and 25PWC series represent a remarkable advancement in engine monitoring and control technology. Designed for robust performance in various applications, these powerful devices are pivotal for industries that rely on efficient engine operation.

The A25PWC, 20PWC, and 25PWC are advanced digital engine monitoring units, particularly known for their versatility and reliability. They cater to a range of engine sizes and types, making them highly adaptable for marine, industrial, and agricultural applications. One of the main features of the series is their precise monitoring capabilities, allowing users to keep track of critical engine parameters such as temperature, pressure, and RPM. This real-time data facilitates quick responses to potential issues, enhancing engine longevity and performance.

Another significant feature is their user-friendly interface. The devices are equipped with a bright LED display that provides clear visibility, ensuring operators can easily interpret the data even in challenging lighting conditions. The intuitive layout offers straightforward navigation, allowing users to access vital information with ease.

Built-in alarm capabilities are another critical characteristic of the Murphy A25PWC, 20PWC, and 25PWC series. These units are programmed to trigger alarms based on user-defined parameters, warning operators of any abnormalities. This proactive approach to monitoring helps prevent engine damage and minimizes downtime.

The series also boasts advanced communication technologies. The devices can be integrated into existing systems using various communication protocols, including CANbus and Modbus. This capability enables seamless data sharing with other monitoring and control systems, presenting a comprehensive overview of engine performance.

Moreover, these units are designed for durability and resilience. Crafted with high-quality materials, the A25PWC, 20PWC, and 25PWC can withstand harsh environmental conditions, making them suitable for outdoor and industrial settings.

In conclusion, the Murphy A25PWC, 20PWC, and 25PWC series are cutting-edge solutions for engine monitoring and control. With their precision monitoring, user-friendly interface, alarm systems, advanced communication technologies, and robust design, these devices stand out as essential tools for ensuring optimal engine performance and reliability across various industries. Whether for marine propulsion or power generation, these units provide the assurance needed for effective engine management.