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The CRC-RM gives personnel a clear, accurate, and unambiguous indication of its pressure environment and alarm status. Unlike other monitors that only have LCD alphanumeric displays and LED indicator lights, CRC uses a bright vibrant color touch-screen with clear to understand graphics that can be easily configured to meet an individual facilities needs. |
Unique Design Approach
Not only does CRC Room Pressure Monitors meet engineering requirements, but we listened to the end user and incorporated features that improve user interface, safety, and facility efficiency. This approach has made Critical Room Control the technology leader in the critical environment applications.
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Traditional Monitor Design Challenges |
CRC - Solution to Challenge |
| 1 |
Confusing / misleading usage of color LED lights may lead to unsafe environments (i.e. "What does a green LED mean??!! 'Clear to Enter' or 'Maintaining Pressure') |
Full text and graphics along with color indication that clearly and unambiguously displays condition of room |
| 2 |
Use of keys to change pressure modes (lost keys, replacement keys, person responsible for keys, etc.) |
Multi level password interface that independently protects day to day functions separate from administrative functions |
| 3 |
Rooms under utilized - other monitors do not support change over procedures |
Optional multistate features that automate occupancy, clearing, and cleaning processes |
| 4 |
Complicated Setup |
Industry exclusive 'Quick Config' walks user through all needed setup parameters |
| 5 |
Pressure reading not stable over time / unreliable |
Incorporate 'Best in Class' ASHCROFT ultra low dead ended pressure transducer |
| 6 |
No integrated pressure control - just monitor |
Onboard pressure controller - PID loop |
| 7 |
Difficult to trouble shoot |
Industry exclusive I/O diagnostic screen allows user to control all four analog outputs and relays while displaying all four analog inputs and digital inputs |
| 8 |
Limited or no communication |
Integrated BACnet MS/TP, N2, and MODBUS communications (optional BACnet IP and LON) |
| 9 |
Difficult to (or does not support) in field calibration of transducer |
Industry first with on screen transducer "zeroing" |
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Specifications:
Dimensions:
- Face plate: H 6", W 7.5", D 3.5"
- LCD Touch Screen: 4" Diagonal
- Optional 5.7" screen available
Network / Communications:
- RS485 physical network
- BACnet MS / TP
- MODBUS
- N2 - Johnson Controls
Differential Pressure Sensing / Controlling:
- Input options: 0 - 5 volts, 0-10 volts, 4-20mA, and Network (.0001" WC)
- Optional analog signal mirroring DP reading out to BAS (0-5 or 0-10 volts)
- Optional Pressure Control (PID) via dedicated 4-20mA (forward / reverse acting)
Temperature Sensing / Controlling:
- Input signal options; 0 - 5 volts, 0-10 volts, 4-20mA, and Network.
- Optional Reheat Control (PID) via dedicated 0-5 or 0-10 volts (forward / reverse acting)
- Show / hide Temp and/or Temp Set Point on main screen
- Allow user to change Temp Set Point via password protected screen
Humidity Sensing:
- Input signal options; 0 - 5 volts, 0-10 volts, 4-20mA, and Network
- Show / hide Humidity and/or Humidity Set Point on main screen
- Allow user to change Humidity Set Point via password protected screen
Digital Inputs:
- Door Contact
- Remote Silence Alarm
- Air Flow Alarm
Relays:
- Pressure Alarm Indication
- Audible Alarm Indication
- Air Flow Alarm Indication
- All Relays normally open circuit (fail)
- All Relays - Max Rated @ 12volts at 500mA
Controller:
- Watchdog Function - monitors its own operation to ensure that it is working properly
- Supports BACnet, N2, and MODBUS Networks / communication (RS485 Network)
- Optional multi-protocol daughter board
- Tunable PID room pressure control loop
- Tunable PID temperature control loop
- Field changeable password
- Ability to 'zero' pressure transducer
- Offers both audible pressure alarm AND audible remote alarm (i.e. Mechanical System Failure)
- Two distinct / different alarm sounds for audible pressure and audible remote alarm
- Complete unit uses .75 amps at 24 volts - total power consumption at 18 VA.
Features:
- Bright / sunlight readable full color LCD touch screen
- Clear and unambiguous display of isolation environment
- Proprietary three-state occupancy indication
- Two separate levels of password protected access (no physical keys needed)
- Device can be configured as either a Pressure Monitor or Pressure Controller (PID)
- Industry leading ASHCROFT ™ Industrial grade direct differential pressure measurement
- Long term accuracy and stability
- Ability to "Zero" calibrate the pressure transducer with a touch of a finger
- Pressure display resolution to 0.0001" WC (0.025 Pa)
- Independent high and low audible and visual alarms
- Adjustable time delay for visual / audible alarms
- Industry first I/O diagnostic screen
- Field configurable, easy, and intuitive menus - no commissioning tools needed
- Resistive touch control - Use bare finger, gloved finger, or stylus to interact with LCD screen
- Monitors room temperature and humidity values via sensor or network
- Allows users to control temperature and humidity set points
- All parameters / settings saved in non-volatile memory
- "Quick Config" feature allows engineers to quickly setup controller
- Audible Alarm Silence (on screen and remote)
- Supports multiple BMS protocols
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