COLO-WAM4 — Multi‑channel Water Activity Meter · 1‑4 sensors
OVERVIEW
The COLO-WAM4 water activity meter is a flexible multi‑channel instrument for accurate aw and temperature measurement. It supports 1 to 4 independent sensors and features a large 128×64 dot‑matrix LCD. The device automatically performs measurements within 5 to 40 minutes (sample‑dependent) with high precision ±0.012 aw and excellent repeatability ≤0.008 aw.
Thanks to multi‑point joint calibration, RS232/USB connectivity and the ability to store up to 5000 data sets (circular buffer), COLO-WAM4 is ideal for quality control in food, pharmaceutical and environmental laboratories. Optional micro printer (end‑of‑measurement or real‑time print). Universal mains 100‑230 VAC.
Professional multi‑channel water activity meter with large LCD, 1‑4 sensor inputs and intelligent data management. COLO-WAM4 delivers ±0.012 aw accuracy, 5000 data sets memory and flexible connectivity (RS232 / USB) for modern laboratories.COLO.Science · Reliable instruments for moisture analysis and quality control.
COLO.SCIENCE KNOWLEDGE
Water activity theory & best practice
Explore COLO.Science articles on water activity measurement, calibration techniques, sensor handling and applications in food safety, pharma stability and more.
Product Overview
COLO-WAM4 multi‑channel water activity meter is engineered for laboratories that demand accuracy and flexibility. The instrument supports up to four independent aw/temperature sensors, making it possible to measure multiple samples simultaneously. With its large graphical LCD, intuitive operation and automatic measurement cycle (5‑40 min), it streamlines routine aw analysis. Data can be transferred to a PC via RS232 or USB and processed with the included Windows® software.
Configuration notice — delivery depends on selected options
Water activity meters may be delivered in different configurations (number of sensors, printer option, calibration certificates). The official PDF technical specification defines the exact configuration, included components and available options for each model/variant. Content shown on this website is provided for general informational purposes only and may not represent the final delivered configuration. Specifications may change without notice.
Key Features
128×64 dot‑matrix LCD
±0.012 aw accuracy
Repeatability ≤0.008 aw
5‑40 min auto‑measure
Multi‑point / single‑point cal
5000 data sets circular
RS232 & USB interface
PC software (Windows)
Optional micro printer
100‑230 VAC supply
Measurement High‑precision water activity & temperature with advanced data handling
Multi‑sensor capability
Connect up to 4 independent aw/temperature probes. Measure different samples simultaneously, increasing lab throughput.
Automatic measurement cycle
5‑40 min auto‑measurement with endpoint detection. No need to manually determine equilibrium – ideal for routine work.
Comprehensive data management
Circular memory for 5000 records, PC software for curve display, product‑based archiving, and print functions (end / real‑time).
Water activity (aw)
- Range: 0.000 … 1.000 aw
- Resolution: 0.001 aw
- Accuracy: ±0.012 aw (23±5 °C)
- Repeatability: ≤0.008 aw
- Calibration: multi‑point joint / single‑point
Temperature & environment
- Temp range: -10.0 … 50.0 °C
- Resolution: 0.1 °C, accuracy ±0.5 °C
- Operating RH: 0‑95% (non‑condensing)
- Measurement time: 5‑40 min auto
Data & connectivity
- Storage: 5000 data sets circular
- Interfaces: RS232, USB
- PC software: curve display, product save
- Print: at end / real‑time (micro printer opt.)
Technical Specifications (COLO-WAM4)
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model | COLO-WAM4 | Display | 128×64 dots LCD |
| Water activity range | 0.000 … 1.000 aw | aw resolution | 0.001 aw |
| aw accuracy | ±0.012 aw (23±5°C) | aw repeatability | ≤0.008 aw |
| Temperature range | -10 … 50 °C | Temp. resolution | 0.1 °C |
| Temp. accuracy | ±0.5 °C | Measurement time | 5 … 40 min auto |
| Number of sensors | 1 – 4 (expandable) | Calibration modes | multi‑point joint, single‑point |
| Data memory | 5000 sets (circular) | PC software | Windows, curve & product save |
| Interfaces | RS232, USB | Print function | end / real‑time (optional printer) |
| Power supply | 100‑230 VAC ±10%, 50/60Hz | Power consumption | ≤10 W |
| Operating environment | -10…50°C, 0‑95% RH | Standard accessories | data cable, power cord, manual |
Note: For the complete specification including optional printer and sensor variants, please refer to the COLO-WAM4 catalog (PDF).
Standard Delivery
- COLO-WAM4 main instrument (channel count as ordered)
- Data cable (USB or RS232 – according to order)
- Mains power cord (EU / UK / US region)
- Instruction manual (EN)
- Factory calibration certificate
- Optional: micro printer, additional aw sensors, calibration salt kit
Exact kit contents may vary by region; please refer to the current catalog and quotation for final configuration.
WAM4 Series — model comparison
Choose the right configuration: number of sensor inputs and optional micro printer.
| Model | Sensor inputs | Data memory | Interfaces | Printer option |
|---|---|---|---|---|
| WAM4‑1 | 1 | 5000 sets | RS232 / USB | micro printer optional |
| WAM4‑2 | 2 | 5000 sets | RS232 / USB | micro printer optional |
| WAM4‑4 | 4 | 5000 sets | RS232 / USB | micro printer optional |
COLO-WAM4 — Multi‑channel Water Activity Meter
A versatile, high‑precision water activity meter with 1‑4 sensor inputs, ±0.012 aw accuracy, 5000 data memory and RS232/USB — supported by COLO.Science.
COLO.Science · Practical and robust equipment for everyday laboratory workflows.
