Description
Overview
GAOTek oil moisture testing is specially designed for the measurement of water content in oil. It is ideal for online monitoring of moisture in lubrication or insulation oil, which is very important for the long-term performance and adaptive maintenance of plants and machinery. For instance, moisture affects dramatically the insulation characteristics of electrical transformer oil and therefore continuous monitoring is extremely important.
Features
- Measures oil water content in ppm or aw
- TPEE transmitter for accurate, stable measurements
- Aw range: 0 (water-free) to 1 (fully saturated)
- Utilizes HC capacitive sensor for reliability
- Long-term stability, resistant to pollution
Technical Specifications
| Measuring Range | 0 aw to 1 aw, -40° F to 356° F (-40° C to 180° C) |
| Output | 0 V to 5 V, 0 V to 10 V, 4 mA to 20 mA, 0 mA to 20 mA |
| Accuracy | ±0.01 aw; ±32.36° F (±0.2° C) |
| Power Supply | 24 V AC or DC |
| Test Range | 0 ppm to 1000 ppm |
| Response Time | 30 s |
| Repeatability Error | ≤±32.36° F (≤±0.2° C) |
| Test Accuracy | ±32.9° F (±0.5° C) at 32° F to 176° F (0° C to 80° C) |
| Power Supply | AC 220 V or 50 Hz (optional) DC 9 V to 33 V (standard configuration) |
| Signal Output | RS 232 serial output Two 4 mA to 20 mA output, the maximum loop load 500 Ω (optional) Two relay alarm output (optional) (The alarm output type can be freely equipped. aw, t, ppm) |
| LCD Display | Switch water activity (aw), temperature (°C) and water content (ppm) at will |
| Alarm Line Setting | The alarm value can be set by serial port setting software (aw, t, ppm) (optional) |
| Probe Type | Several types to be choose according to customers’ needs for the probe length |
| Probe Cable Length | 3.2 ft (1 m) (can be customized for other length) |
| Working Mode | Support on-line or off-line test |
| Required Test Temperature | Maximum pressure 10 bar Oil temperature –40° F to 257° F (-40° C to 125° C) |
| Water Activity Collection Aw | Test range 0 aw to 1 aw Test resolution ±0.0003 aw Test accuracy ±0.02 aw at (0 aw to 0.8 aw) Repeatability error ±0.002 aw Response time with stainless steel folter 10 min |
| Temperature Collection T | Test range –4° F to 176° F (-20° C to 80° C) Test resolution 32.0° F (0.015° C) Test accuracy ±32.09° F (±0.05° C) at 32° F to 176° F (0° C to 80° C) Repeatability error ≤ ±32.36° F (≤ ±0.2° C) Response time 30 s |
| Absolute Water Content AH | Test range 0 ppm to 1000 ppm |
| IP Grade | IP grade of probe IP67 IP grade of shell IP65 |