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Mastercool 99661-AR Digital HVAC Manifold w/thermocouple vacuum sensor & 3-60” manual shut-off valve hoses
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Mastercool 99661-AR Digital HVAC Manifold w/thermocouple vacuum sensor & 3-60” manual shut-off valve hoses

Part Number:MSC99661-AR
Mastercool 99661-AR Digital HVAC Manifold w/thermocouple vacuum sensor & 3-60” manual shut-off valve hoses

HVAC 2-Way Digital Manual Gauge Set includes 3-60" manual shut-off valve hoses, vacuum sensor and cable (98062), clamp-on thermocouple (52336) packaged in a blow molded box

Now compatible with R744 (co2); sensors able to withstand pressure up to 750 psi (50 bar)

Mastercool’s 2-Way Digital Manifold is the most advanced and user friendly Digital Manifold on the market today! This manifold offers a large easy to read LCD that displays Pressures, Saturated Temperatures, Actual Temperatures, Superheat and Subcooling Temperatures for over 60 refrigerants. When used with the clamp-on thermocouple connector it will display the actual temperature and automatically calculate the superheat or subcool temperature. When the vacuum sensor cable is attached to the manifold it will display deep vacuum. To insure lasting performance and durability the manifold case is constructed of ABS material and protected by a rugged rubber boot. The technician now has a fully functional manifold with the intelligence to quickly access and deliver the accurate information needed to do the job right!

Included Refrigerants:
R12, R22, R23, R32, R113, R114, R115, R116, R123, R124, R134, R134a, R141B, R142B, R143, R143A, R290, R401A, R401B, R401C, R402A, R402B, R403A, R403B, R404A, R405A, R406A, R407A, R407B,R407C, R407D, R407F, R408A, R409A, R410A, R410B, R411A, R411B, R412A, R413A, R414A, R414B, R417A (ISCEON MO59), R421A, R422A (ISCEON MO79), R422B, R422C, R422D (ISCEON MO29), R427A (FX100), R434A, R437A, R438A, R441A, R501, R502, R503, R504, R507A, R508B, R509A, R600, R600A, R601, R601A, R744


  • Class 1.0 standard gauge reading
  • Pressure Display: PSI, INHg, Bar, MPa, Kg/cm2
  • Temperature Display: °F or °C
  • Deep Vacuum Display: Micron, mBar, KPa, Pa, Torr, mTorr, mmHg
  • Sensing Resolution: 1 psi (.07 Bar, .007 MPa, .07 Kg/cm2)
  • Sensing Accuracy: ±1 psi or 1% of reading (whichever is greater)
  • Working Pressure: 0 to 750 psi (52 Bar, 5 MPa, 52 Kg/cm2) (does not display 0-5 psi)
  • Proof Pressure: 1000 psi (70 Bar, 7 MPa, 70 Kg/cm2) (Tolerable pressure without internal damage)
  • Refrigerant Temperature Range: -40 to 200°F (-40 to 93°C)
  • Operating Temperature: 32 to 122°F (0 to 45°C)
  • Temperature Accuracy: ±1°F (±0.5°C) between 32 to 160°F (0 to 71°C)
  • Storage Temperature: 10 to 120°F (-12 to 49°C)
  • Connections: 1/4” M-Flare
  • Power: 9V DC battery with optional AC/DC adapter
  • Battery Life: 30-36 hours pressure and temperature mode only (continuous use) / 25-30 hours vacuum and backlight mode (continuous use)
  • Auto-Off: 15 min. with disabling capability

Handsontools® is your one source for auto mechanic and body shop tools, shop equipment, industrial tools and shop supplies. Specialists in vehicle specific mechanic tools, shop tools, industrial tools and shop equipment.

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