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Quartz QG Series Valve Position Monitor
Brand: ValmetThe Quartz is available in explosionproof (QX), nonincendive, intrinsically safe (QN), and general-purpose (QG) versions.
The robust epoxy-coated anodized aluminum construction, and optional stainless steel version, makes this platform extremely durable and well suited for use in corrosive, heavy washdown environments.
QG: General purpose features a clear Lexan cover with mechanical switches. All enclosures are rated NEMA 4, 4x, and 6.
Features- Rapid enclosure access Screw-on cover allows quick enclosure access, saving you valuable maintenance and set-up time. The cover provides a vaportight seal and allows entry to internal components in less than five seconds.
- Faster wiring Pre-wired and labeled terminal strip enables quick, convenient attachment of field wires.
- Quick set cams are easy to adjust Touch and tune switch settings allow you to make adjustments in seconds without the use of tools.
- Dual shaft o-ring seals eliminate corrosion Top inner and bottom outer shaft o-rings seal the drive bushing from both external corrosives and internal contaminants that enter the enclosure.
- Special drive bushing assures long cycle life The oil impregnated bronze bushing maintains smooth operation and eliminates the potential for shaft seizure due to actuator shaft eccentricity.
Specifications
Brand
Communication
- Baud Rate: 125K, 250K or 500K
Conduit Connection
- 1/2” NPT
- 3/4” NPT
- M20
Configuration
- 4-20 mA
- Auxiliary Discrete Input
- Discrete Input
- Discrete Sensor Input
- Modified Output Block
- Multiple DI/DO Blocks
- Power Output
- Single-Pole Double-Throw
- Single-Pole Single-Throw
- Solid State Sensor
- Wire Terminations
Cover Material
- Clear Cover & Indicator: Lexan Polycarbonate
Current
- NAMUR Sensor 45 Current Ratings: Target Off I< 3 mA
- NAMUR Sensor 45 Current Ratings: Target on I< 1 mA
- Stainless Steel Sensors 35 Min. on Current: 0.5 mA
- Stainless Steel Sensors 35, Max.
- Stainless Steel Switching Sensors (_X) Min. on Current: 2 mA
- Stainless Steel Switching Sensors (_X) - Max.
- VCT with Extended Addressing, Max.
- VCT, Max.
Electrical Rating
- 14 Switch (Mechanical Switch) Electrical Rating: 24-125 Vdc
- 14 Switch (Mechanical Switch) Electrical Rating: 4.5 A at 125/250 Vac
- G Switch Electrical Rating: 0.2 A at 120 Vac
- G Switch Electrical Rating: 0.3 A at 24 Vdc
- Gold Contacts (_W Switch) Electrical Rating: 0.5 A at 30 Vdc
- Gold Contacts (_W Switch) Electrical Rating: 1 A at 125 Vac
- H Switch Electrical Rating: 100 W, Max.
- H Switch Electrical Rating: 240 V, Max.
- J & M Switch Electrical Ratings: 0.1 A at 10-30 Vdc
- P Switch Electrical Ratings: 0.15 A at 125 Vac / 30 Vdc
- S Switch Electrical Rating: 0.1 A at 120 Vac
- S Switch Electrical Rating: 0.1 A at 24 Vdc
- Silver Contacts (_V Switch) Electrical Rating: 0.5 A at 125 Vdc
- Silver Contacts (_V Switch) Electrical Ratings: 10 A at 125/250 Vac
Environmental Protection
- IP66
- IP67
- NEMA 4
- NEMA 4X
- NEMA 6
Indication
- Red/Green
Input
- 24 Vdc at 2 mA
Load
- 683 ohms at 24 Vdc
- 700 ohms at 24 Vdc
Materials of Construction
- Drive Bushing: Bronze, Oil Impregnated
- Fasteners: Stainless Steel
- H Switch Contact Composition: Tungsten
- Rhodium
- Ruthenium
Operation
- Normally Closed (Solid State)
- Normally Open (Solid State)
Output
- 4-20 mA
- DeviceNet Output: 4 W at 24 Vdc Outputs Combined
- VCT Bus Powered Output: 2 mA at 6.5 Vdc Each, Current Limited to 2 mA (Bus Powered)
- VCT with Extended Addressing Output: 2 W at 24 Vdc
Power Requirement
- 10-40 Vdc
Range
- 35° to 270°
- 35° to 320°
Seal Type
- Hermetically Sealed
Temperature Range
- -40° to 80° C (-40° to 176° F)
Voltage
- 20-250 Vac
- 5-250 Vdc
Voltage Drop
- G, H, J, M & P Switch, Max.
- G, H, J, M, P Switch, Max.
- S Switch, Max.
- Stainless Steel Sensors 35, Max.
