P4 Series ProCE LPG Electronic Dispenser Calculator
The Industry Standard for Electronic LPG Dispensing
Product Overview
The P4 Series ProCE is an electronic calculator designed for LPG autogas dispensing applications. Running software version 4.45C, the P4 Series is NTEP Category 1 certified — the highest weights-and-measures designation available in the United States — meaning no mechanical seal is required and all calibration and configuration changes are tracked electronically in an event log accessible to any W&M inspector.
Engineered for fleet, autogas, and commercial fueling environments, the P4 Series is compatible with Neptune/Liqua-Tech and Liquid-Controls MA4 series meters and supports both single and dual hose configurations. Automatic Temperature Compensation (ATC) is built in per API Standard 2450 / ASTM D 1250 / ISO R91, correcting volume delivery to 60°F reference temperature for accurate, legally defensible transactions.
The P4 Series is ETL listed and carries CE and GOST certifications for international markets, and meets NEC Class 1, Division I and II hazardous area requirements for installation at LPG fueling facilities.
Key Features
Engineered for the demands of commercial LPG dispensing — from transaction accuracy to W&M compliance.
Automatic Temperature Compensation
Built-in ATC corrects LPG volume to the 60°F reference standard per API 2450, ASTM D 1250, and ISO R91 — ensuring accurate, temperature-adjusted delivery for every transaction.
Multi-Pricing
Up to 5 configurable price levels selectable via keypad or nozzle switch. Supports fleet pricing, retail pricing, and bulk discount tiers without hardware changes.
Preset Dispensing
Amount or volume preset entry via keypad or external preset button. Supports single and dual solenoid valve configurations for precise delivery cutoff.
Sales History
Up to 8,000 transaction records stored with timestamp, volume, price, and delivery data. Accessible via keypad or serial port for reconciliation and audit purposes.
Shift Reporting
Attendant login/logoff with shift-level totalizers. Optional receipt printer support via serial port. Shift data supports back-office reconciliation and fuel management system integration.
Serial Communication
Gilbarco protocol over RS232, RS485, or 2-wire current loop. Configurable baud rate (4800, 5787, or 9600). Enables integration with fuel management systems and back-office software.
Card Reader Integration
MCR authorize signal input with programmable pulse output (1, 10, or 100 pulses per unit volume) and configurable pulse width (0.5–30ms) for compatibility with a wide range of card reader and fleet card systems.
NTEP Category 1 Compliant
The highest W&M designation available. Calibration and configuration event logs are maintained electronically and are accessible to any weights-and-measures inspector — no mechanical seal required.
Technical Specifications
| Specification | Value |
|---|---|
| Software Version | 4.45A / 4.45B / 4.45C |
| Display Type | 664-N (6-6-4 LCD) or 866 |
| Pulser Compatibility | 50, 100, or 250 pulses/revolution |
| ATC Standard | API Standard 2450 / ASTM D 1250 / ISO R91 |
| Calibration Factor Range | −99.99% to +99.99% |
| Sales History Capacity | Up to 8,000 transactions |
| Keypad | 16-key alphanumeric |
| Display Languages | English, Spanish |
| Serial Protocol | Gilbarco (4800 / 5787 / 9600 baud) |
| Serial Interfaces | RS232, RS485, 2-wire current loop |
| Supply Voltage | 120 VAC / 60 Hz or 220 VAC / 50 Hz |
| Hazardous Location Rating | NEC Class 1, Division I and II |
| Standards Compliance | UL 495, UL 1203, UL 1238, UL 508 |
| Certifications | ETL Listed, NTEP Category 1, CE, GOST |
Menu System
The P4 Series uses a 6-level password-protected menu hierarchy. Each level controls a discrete set of functions, keeping daily operations separate from calibration and W&M-controlled parameters. Full menu documentation is available in the P4 Series Manual.
Compatible Meters
The P4 Series is factory-configured for the following meter and pulser combinations.
Neptune / Liqua-Tech
Compatible with Neptune and Liqua-Tech LPG meters equipped with the standard Type 100 pulser. Pulser output: 100 pulses per revolution.
Pulser Type 100Liquid-Controls MA4 Series
Compatible with Liquid-Controls MA4 series meters without SCAMP module. Pulser output: 250 pulses per revolution.
Pulser Type 250Liquid-Controls MA4 with SCAMP
Compatible with Liquid-Controls MA4 series meters equipped with the SCAMP temperature compensation module. Pulser output: 250 pulses per revolution.
Pulser Type 250Need support for your P4 Series dispenser?
Access manuals, error codes, troubleshooting guides, and wiring diagrams for the P4 Series.