- SKU:
- 77185419
- Weight:
- 0.91 LBS
- so_moq:
- 1
- so_qi:
- 1
- Estimated Special Order Ship Date:
- Approximately 3 - 4 Weeks
- Special Order Available:
- Increments of 1
- QPO:
- 0
- MPN:
- 10706280
The Murphy Temperature Swichgage A20T-HL-250-20-1/2 is a diaphragm-actuated, temperature-indicating gage, with built-in electrical switch for tripping alarms and/or shutdown devices. The gage pointer acts as a temperature indicator and as one switch pole which completes a circuit when it touches the adjustable limit contact. Contact is isolated from ground. it has a self-cleaning motion to enhance electrical continuity.
This rugged, built-to-last instrument is fully sealed from the environment by the unique combination of a polycarbonate case and lens, a polished stainless steel bezel and O-ring seal. This vapor/pressure actuated gage features a sealed capillary tube and a sensing bulb. When subjected to heat, the liquid in the sensing bulb changes to vapor creating pressure against a diaphragm mechanism. The diaphragm translates this vapor pressure into a mechanical gage reading.
Applications for this instrument includes: engines and equipment in the oil field, marine, irrigation, construction and trucking industries, monitoring engine coolant temperature, crankcase oil, transmission oil.
PRODUCT FEATURES:
- Corrosion Resistant Polycarbonate Case
- Indicating Gage and Limit Switch
- Switch Can Activate Alarms and/or Shut Down Equipment
- Critical/High Temperature Limit Switch Is Visible and Adjustable
- Contact(s) Isolated From Ground
- Gage pointer makes with an adjustable contact to complete a pilot-duty circuit
- Comply with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted
PRODUCT SPECIFICATIONS:
- Murphy Part No.: A20T-HL-250-20-1/2
- Series: A20T Series
- Base Model: A20T
- Option: High and Low Contacts
- Range: 130-250°F (60-121°C)
- Capillary: PVC armored copper; 20 ft.
- Adapter Nut: 1/2-14 NPT (Standard)
- Diameter: 2 inch / 51 mm, Dial
- Dial: White on black; U.S.A. standard scale is dual scale °F/°C
- Case: Glass filled/Polycarbonate, corrosion-resistant; steel mounting clamp included
- Bezel: Polished stainless steel, standard
- Pointer: Tempered nickel silver; red tip
- Lens: Polycarbonate, high-impact
- Sensing Element: Beryllium copper diaphragm
- Sensing Bulb: Copper
- Lower 1/3 of Scale Gage Accuracy: ±9°F (±5°C)
- Middle 1/3 of Scale Gage Accuracy: ±5°F (±2.4°C)
- Upper 1/3 of Scale Gage Accuracy: ±4°F (±2°C)
- Maximum Temperature: 310°F (154°C)
- Standard Setting Temperature: 210°F (99°C)
- Low Setting Temperature: 160°F (71°C)
- High Setting Temperature: 210°F (99°C)
- Maximum Ambient Temperature: -40°F (-40°C) through 150°F (66°C)
- Adjustable Limit Contact: SPST contact; pilot-duty only, 2 A @ 30 VAC/VDC; isolated from case ground Closed when the high limit is met. Normally Open when pointer is in normal operating range. Contacts are gold flashed silver.
- Limit Contact Adjustment: by a 1/16 in. hex wrench through 100% of the scale
- Wiring: Number 4 screw terminals
- Unit Weight: 11.9 oz. (0.370 kg)
- Unit Dimensions: 4-3/4 x 4-3/4 x 3 in. (121 x 121 x 76 mm)
Product Condition: NEW
