With the recent launch of the New Loop Leader, the price of the older loop-powered panel meters is going to increase substantially and they will be discontinued when supplies are exhausted.
The affected older models are the PD683, PD684, PD688, and PD689 loop-powered panel meters. New pricing on these models is effective 7/1/18. We will currently sell these meters for as long as supply of meters and components allows. However, we strongly recommend all our customers plan on moving to the new models immediately. The New Loop Leader PD6600 series is a lower cost, superior display, with many new features. The dual-line LCD, multiple display options, red backlight, solid-state relays, and two open collectors are just a few of the many features making it a no brainer when it comes to replacing your old loop-powered meter. See the comparisons of the old and new Loop Leader below.
The new and old Loop-Leaders both fit in the same 1/8 DIN panel cutout and extend 3.2" behind the panel. They do have different wiring connections as the diagrams illustrate above.
| LOOP LEADER FEATURES COMPARISON CHART | |||
|---|---|---|---|
| Feature | Old Loop Leader | New Loop Leader | |
| Panel Cutout | 1/8 DIN | 1/8 DIN | |
| Case Depth | Shallow Depth (3.2", 81mm) | Shallow Depth (3.2", 81mm) | |
| Display | Single-Line | Dual-Line | |
| Feet & Inches Display | Not Available | Available | |
| Number of Digits | Five | Five & Eight | |
| Number of Digits for Total | Five | Eight (13 using top line) | |
| Digit Height | 0.60" | 0.70" | |
| Engineering Units/Tags | 3 Alphanumeric Characters | 8 Alphanumeric Characters | |
| Pre-defined Engineering Units | Not Available | Standard Feature | |
| Bargraph | Horizontal, 20-segment | Vertical, 20-segment, with numeric percentage display | |
| Backlight | Yes | Yes, with Red on Alarm Option | |
| Programming Method | Front Panel Buttons | Front Panel Buttons and USB Programming Software | |
| Voltage Drop | 2.0 V (5.7 V with Backlight) | 1.5 V (4.7 V with Backlight) | |
| Operating Temp Range | -30°C to 65°C | -40°C to 75°C (Up to 70°C for Hazardous Areas) | |
| NEMA 4X Gasket | Loose | Seated in Place | |
| Accuracy | 0.03% | 0.02% | |
| Temperature Drift | 50 PPM | 25 PPM | |
| Linear, Square Root, and Programmable Exponent | Yes | Yes | |
| Round Horizontal Tank | No | Yes | |
| Approvals | ATEX IS and FM, CSA IS/NI | ATEX & IECEx IS, UL & C-UL IS/NI | |
| Buttons | Embossed Faceplate | Silicone Rubber | |
| Open Collector Output | One | Two | |
| Loop-Powered Relays | None | Two Solid-State | |
| Isolated 4-20 mA Output | None | One | |
| Digital Inputs | None | One | |
| Warranty | 3 Years | 3 Years | |
| Pump Control Features | Not Available | Standard Feature | |
| NEMA 4X/IP65 Front | Standard Feature | Standard Feature | |
| Function Keys | Not Available | Standard Feature | |
| Conformally Coated PCBs | Not Available | Standard Feature | |
| Functionality | Process display, flow rate totalization | Process display, alarming, alarm trip, signal retransmission, loop-powered isolator, lead-lag pump alternation, dual-scale display, flow rate totalization, batch control, etc. | |
| LOOP LEADER PRICE COMPARISON CHART | |||
|---|---|---|---|
| Old Loop Leader | New Loop Leader | ||
| Model | Price | Model | Price |
| PD683 Process Meter | $488.00 | PD6602 Process Meter PD6603 Process Meter PD6604 Process Meter | $194.00 $229.00 $229.00 |
| PD688 Process Meter (I.S. & N.I)(1) | $738.00 | PD6606 Process Meter (I.S. & N.I)(2) PD6607 Process Meter (I.S. & N.I)(2) PD6608 Process Meter (I.S. & N.I)(2) | $319.00 $354.00 $354.00 |
| PD684 Rate/Totalizer | $638.00 | PD6622 Rate/Totalizer PD6624 Rate/Totalizer | $269.00 $304.00 |
| PD689 Rate/Totalizer (I.S. & N.I)(1) | $908.00 | PD6626 Rate/Totalizer (I.S. & N.I)(2) PD6628 Rate/Totalizer (I.S. & N.I)(2) | $394.00 $429.00 |
(2) These models are ATEX & IECEx IS, UL & C-UL IS/NI