Precision Digital PD686 Loop-Powered NEMA 4X Intrinsically Safe & Nonincendive Digital Meter

  • 4-20 mA Input
  • NEMA 4X
  • 1 V Drop
  • 3½ Digit LCD 1″ (25.4 mm) High
  • Operating Temperature Range: -40 to 85°C
  • ½ Conduit Hole Provided
  • Intrinsically Safe with Entity Class I, II, III; Div. 1; Gp A, B, C, D, E, F, G
  • Non-incendive: Class I, II, III; Div2; Gp A, B, C, D, F, G


Input: 4-20 mA @ 30 VDC maximum
Display: 1.0″ (25.4 mm) LCD, 3½ digits; 1999
Accuracy: ±0.1% FS ±1 count
Approvals: FM Approved & CSA Certified as intrinsically safe with entity, for use in Class I, II, III, Division 1, Groups A, B, C, D, E, F, & G; T-code = T4; hazardous locations. Non-incendive for use in Class I, II, III, Division 2, Groups A, B, C, D, F, & G.
Entity Parameters: Vmax= 30 V, Imax = 175 mA, Ci= 0 µF, Li = 0 µH, Pi = 1.3 W
FM Approved: Intrinsically Safe, Class I Zone 0
See Control Drawing LIM686-2 for complete installation instructions.
Decimal Point: User selectable
Calibration: Two-step; non-interacting zero and span
Calibration Range: 4 mA input: -1000 to +1000;
20 mA input: between 20 and 2000 counts > 4 mA display
Display Update Rate: 2.5/second
Maximum Input Current: 30 mA
Maximum Voltage Drop: 1 V @ 20 mA
Operating Temperature: PD686: -40 to 85°C
for Canadian installations -40 to 40°C.
Storage Temperature: -40 to 85°C
Relative Humidity: 0 to 90% non-condensing
Enclosure: Impact-resistant glass filled polycarbonate body, color: gray; impact-resistant clear polycarbonate cover; NEMA 4X, IP67
Connections: Removable screw terminals accept 12 to 26 AWG
HART Transparency: Analog input will not interfere with existing HART communications on the wired 4-20 mA signal
Conduit Hole: One ½” conduit hole provided; refer to Ordering Information to specify conduit hole location; request skus with rear conduit hole (-X) for panel mounting applications.
Weight: 12 oz (340 g)
Warranty: 2 years parts & labor

Data Sheet: 

Instruction Manual:LIM686_F{web} Instruction Manuals

Quick Start Manual

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