Ambetronics

CRM-111-1 Differential Pressure Monitor

The CRM-111-1 Differential Pressure Monitor is a versatile device designed for various applications, including clean rooms in pharmaceutical environments, HVAC systems, animal house clean rooms, and cold storage facilities. Equipped with a built-in differential pressure Monitor featuring chrome-plated brass hose nozzles, this sensor provides accurate measurements within specified ranges. The 4-digit seven-segment LED display offers clear indication of differential pressure, while two user-programmable alarms (AL1 and AL2) with integrated buzzer ensure timely notifications for pressure limit violations. The device also incorporates a password-protected programming for added security.

1. LED Display: 4-digit seven-segment LED display provides clear and easy-to-read indication of the differential pressure monitor.
2. Alarms: Two user-programmable alarms (AL1, AL2) with integrated buzzer offer timely notifications for pressure limit violations.
3. Calibration: Software calibration feature ensures accurate and reliable pressure measurements.
4. Status Indication: LED indicators (‘AL1’ and ‘AL2’) for alarms and ‘COM’ LED for communication status provide visual feedback.
5. Communication: Isolated RS-485 with Modbus RTU Protocol enables seamless integration with PLCs and SCADA systems.
6. Current Output (Optional): 4-20mA output with 680Ω load capacity and high accuracy (0.125% FS) for compatibility with control systems.
7. Environmental Compatibility: Operating ambient temperature range of 0 to 50°C, suitable for a variety of environments.
8. Humidity Resistance: Designed to operate below 95% RH, non-condensing, ensuring reliability in varying humidity conditions.
9. Power Efficiency: Low power consumption of less than 1.2 watts at 24VDC, typically powered by 18 to 36VDC.

Technical Specifications:

1. Input: Built-in Differential Pressure Monitor with Chrome-Plated Brass Hose Nozzles for both positive and negative pressure connections.
2. Accuracy: ±1% of Full Scale for Differential Pressure.
3. Indication: 4-digit 0.4” Red LED display for Differential Pressure, with additional LED indicators for alarms and communication status.
4. Programming: User-friendly programming with three front buttons, password protection for secure access.
5. Communication Settings:
– RS-485 with Modbus RTU Protocol
– Baud rate: 9600 bps
– Parity: O/E/N
– Data bits: 8
– Stop bits: 1/2
– Slave ID: 1-250
– Minimum Polling interval: 200 milliseconds
6. Environmental Specifications:
– Operating Ambient Temp.: 0 to 50°C
– Humidity: Below 95% RH, Non-condensing
7. Electrical Specifications:
– Supply voltage: 18 to 36VDC, Typically 24VDC
– Power consumption: Less than 1.2 watts at 24VDC
8. Dimensions:
– Flush mounting plate: SS-304
– Front plate size: 90 mm(H) x 110 mm(W)
– Back enclosure: MS with powder-coated finish
– Overall Dimension: 90 mm(H) x 110 mm(W) x 43 mm(D)
– Mounting: Modular wall mounting with a Stainless Steel Front.

Ideal for applications requiring accurate and reliable differential pressure measurements. Suitable for various industrial and HVAC (heating, ventilation, and air conditioning) applications.
Used in systems that require precise control and monitoring of pressure differentials. Suited for applications where alarms for pressure limit violations are essential.

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