The PD6770 is a general purpose, field-mount loop-powered indicator that is easy to install and program. It can be seen from considerable distance and even in bright sunlight. The fact that this meter is looppowered means that there is no need to run additional, costly power lines. The meter gets all of the power it needs from the 4-20 mA loop and its 1 V drop results in a minimal burden on the loop. The meter features a wide -40 to +75°C operating temperature range and comes with three ¾" NPT threaded conduit openings and flanges for wall or pipe mounting. Calibration is a quick two-step process involving the adjustment of only high and low, non-interacting potentiometers.
- NEMA 4X, IP66 Loop-Powered Field-Mount Process Meter
- 4-20 mA Input
- 1.0" (25.4 mm) 3½ Digits LCD Display; -1999 to 1999
- 1 Volt Drop (4 Volt Drop with Backlight)
- HART® Protocol Transparent
- Loop-Powered Backlight Standard
- Operates from -40 to 75°C (-40 to 167°F)
- Coarse and Fine Zero & Span Potentiometer Adjustments for Easy Field Scaling
- Flanges for Wall or Pipe Mounting
- Plastic NEMA 4X, IP66 Enclosure
- Conformal Coated PCBs for Dust and Humidity Protection
- Three ¾" NPT Threaded Conduit Openings (Two Plugs Installed)
- Pipe Mounting Kits
- Stainless Steel Tag Available
GeneralDisplay: 3½ digit LCD, 1" (25.4 mm); -1,999 to 1,999
Display Update Rate: 2.5 Updates/Second
Display Orientation: Display may be mounted at 90° increments up to 270° from default orientation
Overrange: Display reads 1 on the left most digit
Programming Method: Four front mounted rotary control dials accessed when the cover is removed.
Recalibration: Recommended at least every 12 months.
Normal Mode Rejection: 60 dB rejection ratio
Operating Temperature Range: -40 to 75°C
Storage Temperature Range: -40 to 75°C
Relative Humidity: 0 to 90% non-condensing. Printed circuit boards are conformally coated.
Connections: Screw terminals accept 12 to 22 AWG wire
Enclosure: NEMA 4X, IP65 plastic field enclosure. Color: grey. Material: Polycarbonate with UV Stabilizer. Three ¾" NPT threaded conduit Two ¾" NPT plastic conduit plugs, with 1.29" wrenching flats and a screwdriver slot, are included.
Mounting: May be mounted directly to conduit. Two slotted flanges for wall mounting or NPS 1½" to 2½" or DN 40 to 65 mm pipe mounting.
Overall Dimensions: 5.67" x 5.25" x 4.18" (144 mm x 133 mm x 106 mm) (W x H x D)
Weight: 1.65 lbs (26.4 oz, .75 kg)
Warranty: 3 years parts and labor
InputInput: 4-20 mA
Accuracy: ±0.1% of full span ±1 count
Temperature Drift: 150 PPM/°C from -40 to 75°C ambient
Decimal Point: User selectable decimal point
Calibration Range: 4 mA input: -1000 to +1000; 20 mA between 20 and 2000 counts greater than 4 mA display. Two point linear display span.
Maximum Voltage Drop: 1 VDC @ 20 mA without backlight; 4 VDC @ 20 mA with loop-powered backlight.
Input Overload: Over current protection to 2 A max.
HART Transparency: Analog input will not interfere with existing HART communications on the wired 4-20 mA signal
Loop-Powered Backlight Option: Factory installed only. Powered directly from the 4-20 mA loop, no batteries required. Backlight can be enabled or disabled via alternative wiring of terminal block. The display brightness will increase as the input signal current increases.