1. High-precision Monitoring: The Clean Room Differential Pressure Monitor CRM-131-1 ensures accurate and reliable monitoring of differential pressure in clean room environments.
2. 7-Segment LED Display: Clean Room Differential Pressure Monitor Equipped with a 7-segment LED display, the monitor provides a clear and easy-to-read indication of the differential pressure.
3. User-Programmable Alarms: Users have the flexibility to set two alarms, AL1 and AL2, based on their specific requirements for pressure limits.
4. Integrated Buzzer: The monitor features an integrated buzzer that immediately signals alarm violations, allowing for prompt attention and corrective action.
5. Inbuilt Calibration Facility: Offering Inbuilt calibration, the device provides convenience in maintaining accurate pressure measurements over time. It also indicates when calibration is due or when sensor replacement is necessary.
6. Password Protection: Enhanced security with password-protected programming ensures authorized access and prevents unauthorized changes to settings.
7. RS-485 Communication: The isolated RS-485 communication with Modbus RTU Protocol allows seamless integration with various systems, including PLCs and SCADA.
8. Optional Built-in Relays: The monitor provides the option for two built-in relays with DPDT ratings of 2A/24VDC each, offering additional control capabilities.

Technical Specifications:

1. Sensor: Built-in differential pressure sensor with Chrome-Plated Brass Hose Nozzles for +Ve and -Ve pressure connections.
2. Accuracy: Differential Pressure: ± 1% F. S
3. Display: 4-digit Seven Segment 1” Red LED for Differential Pressure, Status LEDs for Alarms (AL1 and AL2) and Communication (COM).
4. Audio Indication: Integrated buzzer for Alarm limits violation.
5. Output (Optional): 2 Nos. DPDT relays (2A/24VDC).
6. Communication: Isolated RS-485 with Modbus RTU Protocol, programmable settings for baud rate, parity, data bits, stop bits, slave ID, and minimum polling rate.
7. Programmable Parameters: Set points for AL1 and AL2, user-programmable alarm logic (High or Low).
8. Environmental Conditions:
– Operating Ambient Temp.: 0 to 50°C
– Humidity: Below 95% RH, Non-condensing.
9. Electrical:
– Supply Voltage: 18 to 36VDC (Typically 24VDC)
– Power Consumption: Less than 1.2 watts at 24VDC.
10. Dimensions:
– Flush Mounting Plate: Aluminium SS-304
– Front Plate Size: 185 mm (H) x 200 mm (W)
– Back Enclosure: MS with powder-coated finish
– Overall Dimension: 185mm (H) x 200 mm (W) x 50 mm (D)
– Mounting: Modular wall mounting with SS or Aluminium front.