Contrec 515 Analogue Input Batch Ratio Controller (CR02)

Name: Contrec 515 Analogue Input Batch Ratio Controller (CR02)
Brand: Contrec
SKU: 515–CR02
Availability: InStock

SKU: 515–CR02 Category: Batch Controllers Tag: Contrec 515 Series

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Brand: Contrec

The Contrec 515 CR02 is a reliable single loop process controller designed to measure the volume flow in both main and process lines using analog flow inputs. This versatile device can operate in various modes including local (manual), loop, ratio, or blend mode. It features a user-friendly tuning menu that helps you easily set the Proportional Band and Integral Time Values for the PI control algorithm.

By monitoring the main and process flows, the Contrec 515 CR02 calculates the net volume flow. Operators can view the current ratio and deviation, and if authorized, they can adjust the controlling setpoint directly from the main menu.

The PI control of the process flow is managed through a 4-20mA proportional valve or an industrial dosing pump controller. This system includes integral wind-up protection, and you can program a deadband and output ramp time to minimize wear on valves and actuators, ensuring smooth and bumpless operation.

CALCULATIONS

There are three control modes available where the process flow depends on the main flow: RATIO, BLEND-1, and BLEND-2 modes. The relationships between the flows in these modes are as follows:

Ratio Control Mode:

In this mode, the process flow is a percentage ratio of the main flow (0-400% range).

Pflow
Ratio% = —————- × 100
Mflow

Blend Control Modes:

These modes are designed for blending points before and after the main flowmeter. The process flow is a percentage ratio of the net (combined) flow (0-80% range).

Pflow
Ratio% = —————- × 100
Netflow

Contrec Model 515-CR02 Technical Specifications
● POWER SECTION
Power Supply Options	AC Mains: 100 to 240 Vac ±10%, 50 to 60Hz ±10% DC Supply: 12 to 28 Vdc
Power Consumption	10W maximum (Overvoltage Category II)
Transducer Power Output	Voltage: 8 to 24 Vdc programmable output Current: 70mA maximum @ 24V, 120mA maximum @ 12V Protection: Power limited output
Memory Retentivity	Type: Non-volatile memory Retention: > 30 years Data Stored: Setup parameters, Totals, and Logs
● INPUT SECTION
Analog Flow Inputs	Channels: 2 isolated channels (Analog Input 3 for Main Flow, Analog Input 4 for Process Flow) Signal Types: 4-20mA, 0-5V, and 1-5V input Overcurrent Rating: 100mA absolute maximum (30mA max for 4-20mA inputs)
Input Impedance	4-20mA Input: 100 Ohms (to common signal ground) 0-5V / 1-5V Input: 10 MOhms (to common signal ground)
Logic Inputs	Quantity: 4 control inputs (Inhibit Process Flow, Forced Local/Manual Control, Remote Reset, CAL Field Access Protection) Signal Type: CMOS, TTL, open collector, reed switch Overvoltage Protection: 30V maximum
● OUTPUT SECTION
Isolated Outputs	Quantity: 2 configurable opto-isolated channels (1 standard, 2nd optional) Re-transmission: Totals mapped as Pulse/Digital outputs; Rates mapped as 4-20mA analog loops
Pulse / Digital Output Details	Signal Type: Open collector Switching Capacity: 200mA, 30 Vdc maximum Saturation Voltage: 0.8V maximum Pulse Width: Programmable to 10ms, 20ms, 50ms, 100ms, 200ms, or 500ms
4-20mA Output Details	External Loop Supply: 9 to 30 Vdc Resolution: 0.05% full scale
Control Relay Outputs	Quantity: 2 standard mechanical relays (expandable to 4 total via advanced option) Contact Configuration: Relay 1 assigned to Pump Demand; Relays 2-4 programmable as alarms Load Ratings: 250 Vac or 30 Vdc maximum; 3A max for mechanical, 1.5A max for solid-state (AC only)
Communication Ports	COM-1: RS-232 port standard (9-pin serial DB9 link) COM-2 (Optional): RS-485 or Ethernet port Baud Rate Range: 2400 to 19200 baud (with Odd, Even, or None parity; 1 or 2 stop bits; 8 data bits) Supported Protocols: ASCII, Modbus RTU, Modbus TCP/IP (via Ethernet port), and Printer protocols
● PERFORMANCE
Input Loop Accuracy	At Ambient Baseline: 0.05% full scale @ 20°C Thermal Range Drift: 0.1% full scale typical across full operating range
4-20mA Analog Output Accuracy	At Ambient Baseline: 0.05% full scale @ 20°C Thermal Range Drift: 0.1% full scale typical across full operating range
Calculation Latency	Update Time: < 1.0 second loop response time
Linearization Features	Non-linearity correction supporting up to 20 calibration points on selected flow inputs
● PHYSICAL
Operator Display Interface	Type: Backlit LCD panel Configuration: 7-digit numeric display (15.5mm high digits) paired with an 11-character alphanumeric field (6mm high characters) Display Refresh Rate: 0.3 second update cycle LCD Status Backup: Last data reading remains visible for 15 minutes post power failure
Enclosure Variations	Panel Mount: Standard dynamic implementation layout Field Mount Enclosure: Weatherproof housing variant rated to NEMA 4X / IP66 Explosion Proof Housing: Heavy-duty Ex d certified enclosure (ATEX, IECEx, or CSA options available with optional internal heater layout)
Panel Option Dimensions	Width: 147mm (5.8″) Height: 74mm (2.9″) Depth: 170mm (6.6″) clearance depth required behind installation fascia
Real-Time Clock Data Logger	Storage Capacity: Integrated memory logging capability handling over 1000 main menu variable history entries Typical Battery Lifespan: 5 years operation before replacement maintenance
System Internal Battery Types	Option Card (Issue 7): 3V Lithium cell type CR2450N (Renata exclusively) Conformal Coated ‘C’ Card: 3V Lithium cell type BR2032 (Panasonic exclusively) Standard Cards: 3V Lithium cells types BR2032 or CR2032 (Panasonic or Sony)
● COMPLIANCE
Standard Operating Thermal Window	Standard Enclosure: +5°C to +40°C temperature range With Conformal Coating: -20°C to +60°C temperature range Ex d Enclosure with Internal Heater: -30°C to +60°C temperature range
Humidity Limits	Standard Configuration: 5% to 85% non-condensing range Conformal Coated Variant: 0% to 95% non-condensing deployment capacity
Environmental Protection Rating	Fascia face achieves IP65 (NEMA 4X) ingress defense sealing benchmark when panel integrated configuration rules are maintained
Regulatory Certifications	CE Compliance, UKCA Conformity, CSA Quality Certification baseline safety marks Environmental Status: Entire framework complies with current RoHS directives *Note: Optional Option C conformal PCB treatment layout provides maximal defense to guard card lines against high ongoing moisture and ambient localized tracking corrosion.