The Precision Digital PD662 NEMA 4X, CSA Certified loop-powered meter is perfect for applications where a simple, inexpensive display is required and AC power is not available. The PD662 derives all its power from the 4-20 mA loop, including its optional backlight feature. It can be easily scaled in the field using four pushbuttons, with or without applying an actual calibration signal. The PD662’s display will read up to 2999; we call this 3½+ digits! The PD662 is housed in a rugged NEMA 4X enclosure and is provided with a one ½” NPT pipe conduit hole.
Precision Digital PD662 Survivor NEMA 4X Loop-Powered Process Meter
- NEMA 4X, IP66 Loop-Powered Field-Mount Process Meter
- 4-20 mA Input
- 0.6″ (15.2 mm) 3½+ Digits LCD Display; -1999 to 2999
- 1.7 Volt Drop (3.7 Volt Drop with Backlight)
- HART® Protocol Transparent
- Loop-Powered Backlight Option
- CSA Certified for -40 to 75°C (-40 to 167°F) Operation
- Four Internal Buttons for Easy Field Scaling
- Max/Min Display
- Programmable Noise Filter
- 32-Point and Square Root Linearization Functions
- Plastic NEMA 4X, IP66 Enclosure
- Conformal Coated PCBs for Dust and Humidity Protection
- One ½” Conduit Hole in Rear of Enclosure
- Pipe & Panel Mounting Kits
- Stainless Steel Tag Available
Display: 0.6″ (15.2 mm) LCD, 3½+ digits; -1999 to 2999
Display Update Rate: 2 Updates/Second
Over-Range: Display Flashes 2999
Under-Range: Display Flashes -1999
Programming Method: 4 Front Panel Pushbuttons
Noise Filter: Programmable HI, LOW, or OFF
Recalibration: Recalibration is recommended at least every 12 months.
Max/Min Display: Max/Min readings reached by the process are stored until reset by the user or until power to the meter is turned off.
Non-Volatile Memory: All programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Normal Mode Rejection: 64 dB at 50/60 Hz
Environmental: Operating Temperature for CSA Certification: -40 to 75°C.
Functional Temperature Range: -40 to 85°C. Storage Temp.: -40 to 85°C.
Relative Humidity: 0 to 90% non-condensing. Printed circuit boards are conformally coated.
Connections: Removable screw terminals accept 12 to 22 AWG
Tightening Torque: Screw terminal connectors: 4.5 lb-in (0.5 Nm)
Enclosure: Impact-resistant polyester plastic, body color gray, clear cover with blue faceplate; NEMA 4X, IP66; ½” conduit hole provided at base
Weight: 9.3 oz (264 g)
Overall Dimensions: 3.15″ x 4.33″ x 2.76″ (80 mm x 110 mm x 70 mm) (W x H x D)
Warranty: 3 years parts & labor
Input: 4-20 mA
Accuracy: ±1 count
Temperature Drift: 50 PPM/°C from -40 to 85°C ambient
Decimal Point: User selectable decimal point
Minimum Span: Input 1 & Input 2: 0.40 mA
Maximum Voltage Drop: 1.7 VDC @ 20 mA; 3.7 VDC @ 20 mA with backlight option.
Equivalent Resistance: 85 Ω @ 20 mA without backlight; 185 Ω @ 20 mA with backlight
Loop-Powered Backlight Option: Factory installed only with field wiring option. Powered directly from the 4-20 mA loop, no batteries required. The display brightness will increase as the input signal current increases.
HART Transparency: Analog input will not interfere with existing HART communications on the wired 4-20 mA signal
Heater OptionPower: 24 VDC, 11 W Maximum.
Required Switch & Fuse: A CSA Approved fuse rated min 30 VDC, 1 A, T and a readily accessible switch or a circuit breaker shall be provided to facilitate the disconnection of power to the heater.
Environmental: Operating Temperature for CSA Certification: -55 to 75°C.
Functional Operation: -55 to 85°C. Storage Temperature: -55 to 85°C.
Relative Humidity: 0 to 90% non-condensing.
Temperature Cutoff: Internal 104°C thermal cutoff for over temperature protection.
CSA Certified: U.S. & Canada. 2252 05 — Process Control Equipment. 2252 85 — Process Control Equipment, U.S. Standards.
CSA File Number: 157123
CSA Applicable Requirements: CAN/CSA C22.2 No. 61010-1-04 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements UL 61010-1:2004, 2nd Edition Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use – Part 1: General Requirements.
The two wire power/signal connection is made on the back of the PD662 on the three position removable terminal block. Follow instructions printed on the unit for two wire loop-powered connections with or without backlight.
PD662 Input Connections with Backlight
PD662 Input Connections without Backlight