Cole-Parmer Model 33114-00 Flow Totalizer & Batch Controller

Overview

The Cole-Parmer Model 33114-00 is a DIN-rail mountable, microprocessor-based flow totalizer and batch controller engineered for precision monitoring, accumulation, and discrete volume control in industrial process environments. It operates on the principle of pulse counting or analog signal integration to compute real-time flow rate (e.g., L/min, gal/hr) and cumulative volumetric total (e.g., L, gal), supporting both continuous process oversight and discrete batch operations. Designed for integration into liquid and gas metering systems—including turbine, paddlewheel, vortex, and ultrasonic flowmeters—the device accepts pulse inputs from frequency-output sensors or analog 4–20 mA signals from differential pressure or magnetic flow transmitters. Its architecture complies with fundamental requirements for industrial process instrumentation per IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions), and its NEMA 4X front panel ensures protection against dust, water ingress, and hose-directed spray—making it suitable for washdown environments in food & beverage, chemical, and pharmaceutical manufacturing.

Key Features

• Real-time flow rate display with user-configurable high/low alarm thresholds and programmable total reset points
• 6-digit red LED display (1/2-inch height) for high-visibility operation under ambient lighting or low-illumination conditions
• Dual SPDT relays (on select models including 33114-06 and 33114-16) for direct actuation of solenoid valves, motor starters, or pumps during batch termination or alarm events
• RS-485 serial communication (Modbus RTU protocol) for integration with PLCs, SCADA systems, or centralized HMIs
• 4–20 mA analog output with configurable range scaling and optional square-root extraction to linearize outputs from orifice plates or other quadratic-response sensors
• 15-point user-defined linearization table for compensation of non-linear sensor characteristics without external signal conditioners
• Batch control logic supporting single-valve (coarse/fine) or dual-valve configurations to minimize overshoot and improve volumetric repeatability
• Three independent counters: batch totalizer (auto-resets per batch), grand totalizer (non-volatile, retains accumulated volume across power cycles), and cycle counter (tracks number of completed batches)

Sample Compatibility & Compliance

The 33114 series interfaces seamlessly with a broad spectrum of flow sensing technologies. Pulse-input variants (e.g., 33114-00, 33114-06) are compatible with meters generating TTL, open-collector, or dry-contact pulses up to 28 VDC and frequencies up to 10 kHz. Analog-input models (e.g., 33114-10, 33114-16) accept standard 4–20 mA current loops with 250 Ω shunt impedance and support HART-compatible passive input modes. All units meet UL 508 industrial control equipment standards and carry CE marking for conformity with the EU Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU). While not certified for SIL-rated safety functions, the device supports procedural compliance with FDA 21 CFR Part 11 when used in conjunction with validated system-level audit trails and electronic signature workflows.

Software & Data Management

Configuration is performed locally via front-panel membrane keys and rotary encoder, with no PC software dependency required for basic setup. Advanced parameters—including linearization tables, relay hysteresis, batch setpoints, and Modbus slave ID—are stored in non-volatile EEPROM, retaining settings through power loss. The RS-485 interface enables read/write access to all operational registers (flow rate, totals, relay status, alarms) using standard Modbus function codes (03h, 06h, 10h). Data logging must be implemented externally via connected PLC or historian system; the unit itself does not embed internal memory or time-stamping capability. Audit-ready operation is supported through manual configuration logs and relay state change timestamps captured by upstream control systems.

Applications

• Batch filling of containers in pharmaceutical vial filling lines, where precise volume delivery and repeatable cycle counts are critical for batch record integrity
• Chemical dosing control in wastewater treatment plants, using dual-relay sequencing to manage coarse and fine feed valves
• Fuel dispensing and lubricant blending in industrial maintenance facilities, with grand totalization for inventory reconciliation
• Process water metering in food processing lines requiring NEMA 4X-rated enclosures for daily sanitation protocols
• Calibration verification of custody-transfer flowmeters via parallel totalization and deviation trending over extended periods

FAQ

Does the 33114-00 support HART communication?

No—it accepts analog 4–20 mA as a passive input but does not interpret or superimpose HART digital signals.
Can the batch setpoint be changed remotely during operation?

Yes, via Modbus register write commands (holding register address 40002), provided the host system implements appropriate access control.
Is non-volatile memory retention guaranteed after 10 years?

EEPROM data retention is rated for ≥100,000 write cycles and ≥10 years at 25 °C per manufacturer specifications; actual longevity depends on thermal profile and write frequency.
What is the maximum pulse frequency supported?

10 kHz for clean TTL-compatible signals; performance degrades above 5 kHz with long cable runs or EMI exposure without proper shielding.
Does the device provide intrinsically safe output for hazardous locations?

No—it is rated for general-purpose industrial use only and lacks IS certification (e.g., ATEX, IECEx); field barriers must be installed externally if deployed in Class I Div 1 areas.