Three parameters, integrated sensors, one flush-mounted monitor. Temperature, humidity, and differential pressure, all sensed and displayed from a single instrument, without a separate probe to route or install.
The AI-CRM1-1 is Ace Instruments Pharma Clean Room Monitor, designed to measure the vital parameters of temperature, humidity, and differential pressure in pharmaceutical cleanroom applications, combining three sensing functions into a single compact, wall-mounted instrument.
The monitor is engineered for minimum cabling and easy flush mounting in modular wall panels or brick walls, with all three sensors integrated inside the enclosure, so there is no separate probe to route, install, or maintain.
The combination humidity and temperature sensor is flushed to the front stainless steel plate, measuring conditions directly at the monitoring location without requiring a separate external probe. The differential pressure sensor is built into the monitor, with two hose nipple connections provided at the rear for positive and negative pressure connections, allowing the pressure difference between two areas, such as a cleanroom and an adjacent corridor, to be continuously monitored. The same rear pressure connections support both positive and negative differential pressure applications, depending on the pressure relationship the installation needs to verify. An integrated buzzer provides an audible alert when a monitored parameter violates its configured process limit, while individual LEDs give visual indication of which parameter is in violation.
Both instruments measure the same three parameters, temperature, humidity, and differential pressure, but they differ in where the temperature and humidity sensor sits relative to the display.
Uses fully integrated sensors. The combination humidity and temperature sensor is flushed directly to the front stainless steel plate, alongside the built-in differential pressure sensor. This suits installations where the measurement point and the display point are the same location, a straightforward flush mount with no separate sensor cable to route.
Uses an external temperature and humidity sensor, separate from the display, while the differential pressure sensor remains built into the monitor body. Choose this model when the measurement point needs to be inside a controlled space, like an operation theatre or cleanroom, while the display needs to be accessible outside it, without personnel entering just to take a reading.
In short, if the sensor and display can share the same spot, the AI-CRM1-1 is the simpler, more straightforward choice. If the sensor and display need to sit in two different physical locations, the AI-CRM3-1-1 is built for that.
The AI-CRM1-1 uses a standard LED digit display for its three parameters. Ace Instruments also offers graphic display variants for buyers who want a clearer, more detailed readout.
LED display showing temperature, humidity, and differential pressure, with individual process violation LEDs for each parameter.
Uses a 128x64 graphic blue backlight display with white digits, an easy to read 3 line display with engineering units for each parameter, temperature in °C, humidity in %RH, and differential pressure in Pascals or mm.W.C., with sensors integrated in the same way as the AI-CRM1-1.
Combines the same 128x64 graphic LCD display with an external temperature and humidity sensor configuration, useful where both a clearer display and separated sensor placement are needed together.
If a simple digit readout with per parameter alarm LEDs is sufficient, the AI-CRM1-1 is the more straightforward and cost effective option. If a clearer, engineering unit labeled graphic display matters for the project, or an external sensor is needed alongside it, the AI-CRM1-LCD or AI-CRM1E-LCD are worth comparing directly against this page.
Flush-mounted on the front stainless steel plate for direct measurement at the monitoring location.
Two rear hose nipple connections for positive and negative pressure monitoring.
All three sensors integrated inside the instrument, reducing wiring and installation complexity.
Audible alert for process limit violation across all three parameters.
Visual indication identifying which specific parameter has triggered an alarm.
Configurable buzzer behavior to suit site requirements.
Supports integration with BMS, SCADA, and EMS platforms.
Monitors temperature, humidity, and differential pressure together across manufacturing and packaging areas.
Supports monitoring of air handling and controlled environment conditions.
Tracks environmental conditions relevant to biotechnology production and research.
Verifies HVAC systems are maintaining required temperature, humidity, and pressure setpoints.
Monitors temperature, humidity, and differential pressure in cleanroom fabrication and packaging areas.
Supports environmental compliance monitoring in active pharmaceutical ingredient and bulk drug production.
The AI-CRM1-1 combines three monitoring functions into one instrument, with sensors integrated directly into its enclosure. This reduces the need for separate wall-mounted instruments and their associated wiring, creating a cleaner, simpler installation than deploying three standalone indicators. It is the right fit for applications where the sensing point and the display point can be the same location. Where they cannot, a model with an external sensor, such as the AI-CRM3-1-1, is the more appropriate choice.
| Parameter | Specification |
|---|---|
| Measured Parameters | Temperature, Relative Humidity, Differential Pressure |
| Sensor Configuration | Integrated temperature/humidity sensor (front stainless steel plate); built-in differential pressure sensor |
| Pressure Connections | 2 Nos. hose nipples, rear mounted, for positive and negative pressure connection |
| Differential Pressure Range | 0.0 to 10.0 mm.W.C. / 0 to 100 Pascals (customizable) |
| Alarm | Integrated buzzer with individual process violation LEDs; buzzer enable/disable and delay options |
| Communication | RS-485 Modbus for BMS/SCADA/EMS integration |
| Mounting | Flush mounting, suited for modular wall panel or brick wall installation |
Note: For complete detailed specifications, please refer to the downloadable datasheet.
Ace Instruments cleanroom monitoring range, including the AI-CRM1-1, is manufactured in compliance with global quality standards, including CE and ISO 9001:2015. Cleanroom monitoring of this kind is essential in industries requiring strict environmental control, including pharmaceutical manufacturing, semiconductor fabrication, biotechnology, medical device manufacturing, and nanotechnology. RS-485 Modbus communication allows monitored data to be logged and integrated into a facility's BMS, supporting the continuous recordkeeping expected in regulated cleanroom environments.
Sensor configuration, dimensions and wiring details are in the datasheet.