The Marsh Bellofram / ATC 365 Long Ranger Computing Timer is a microprocessor-based digital timer engineered for precision industrial timing, process control, and equipment sequencing. Built on continuous computational architecture, the timer digitally re-computes time remaining with every setpoint change, delivering consistent reset timing and measurement accuracy across nine switch-selectable ranges spanning 0.01 seconds to 999 hours. The high-intensity blue vacuum fluorescent display presents three-digit cycle progress (0.3 inch height) with DIP-selectable Timeup or Timedown operation and visual feedback via timing bar that blinks once per second during the cycle and rapidly after timeout.
Technical Specifications
• Timing Range: 0.01 seconds to 999 hours
• Selectable Ranges: Nine switch-selectable ranges (0–9.99, 99.9, or 999 seconds, minutes, or hours)
• Preset Adjustment: Three rotary knobs for setpoint configuration
• Preset Capability: Any three-digit value from 0.01 seconds to 999 hours
• Display: High-intensity blue vacuum fluorescent, 0.3 inch character height
• Output Relays: Two heavy-duty 7A DPDT relays with instantaneous, interval, or delayed control
• Relay Life: 100,000,000 operations
• AC Contact Ratings: 7A at 120V, 240V, or 24V AC; 1/6 HP at 120/240V AC
• DC Contact Ratings: 3A at 24V DC, 1.5A at 48V DC, 0.5A at 125V DC
• Operating Time: 13 ms maximum
• Release Time: 10 ms maximum
• Power Supply: Transformer-based with full-wave bridge rectification
• Noise Immunity: Buffered logic with microcomputer-based noise pulse rejection
• False Reset Protection: Immunity to momentary power interruptions less than 30 mSEC
• Self-Diagnostics: Built-in program verification with “FAIL” display indication
– Key Features
• Microprocessor digital clocking eliminates line voltage or supply variation effects on reset time and pulse length
• Repeat cycle mode with digitally clocked output pulses for consistent timing
• Full gasketing and zero moving parts ensure durability in demanding environments
• Terminal-based design supports selector knob removal for tamper-proof optimization
– Electrical Requirements
• 120V AC: 95–132V AC, 50 or 60 Hz (Inrush: 0.3A, Running: 0.06A)
• 240V AC: 190–264V AC, 50 or 60 Hz (Inrush: 0.15A, Running: 0.03A)
– Typical Applications
Industrial process control, equipment sequencing, automation timing, and precision cycle management in manufacturing and industrial facilities.
