The Tramex SMM5 calibration check box is used for checking readings on the Tramex Skipper 5 Moisture Meter (for boats) - SMM5 non-destructive impedance type moisture meters.
This process allows the user to verify that the instrument is still performing within tolerances deemed acceptable by Tramex. Tramex recommends that instrument users check their instruments regularly on the relevant calibration check equipment.
If the instrument is outside these tolerances, then it should be returned to Cornell Group for a recalibration service.
In addition to the above, periodic recalibration is recommended by ISO (International Organization for Standardization) and other quality standards, protocols, and practices for all measurement and testing equipment.
Calibration checkboxes are for field calibration checking of Tramex instruments, to verify that instruments are within Tramex specified tolerances.
Instructions for use
- Place the Meter in the correct orientation with the electrodes in position.
- Lightly compress the meter when taking a reading.
- The reading on the meter should align with the numbers below:
- 1. Wood-Timber Scale: 19.0%. ±1.0%
- 2. Shallow Depth Scale: 14.0% ±1.0%
- 3. Drywall - Roofing Scale: 22.0%. ±1.0%
- 4. Plaster - Tile Scale: 9.0% ±1.0%
Why check, and when
These instruments do not drift dramatically – they drift quietly. A meter that has been dropped, left in a hot vehicle, or simply worked hard for a couple of years can read consistently and still read wrong, and nothing on the display tells you. A check before a job whose readings go into a report, an insurance claim or a compliance certificate costs a minute and protects the reading you are prepared to sign your name to.
A check box confirms the meter reads correctly. It is not a calibration adjustment – if a meter fails its check, it needs to go back for service.
Which calibration check suits which meter
| Check device | For |
| CALBOXME5 check box | ME5 Moisture Encounter |
| CALBOXSMM5 check box | SMM5 Skipper 5 |
| MRH series check box | MRH series, including MRH3 |
| CALCRH check plate | CM series concrete meters – CME5, CMEX5 |
| Calibration check plugs, set of 3 | Pin-type meters |
| SAL75 75% salt check | Hygro-i2 relative humidity probes |
Impedance meters and RH probes are checked differently. An impedance meter is verified against a reference box or plate of known value; an RH probe is verified in a sealed salt chamber at a known humidity. One does not substitute for the other, and a meter that takes RH probes needs both.
Tell us which meter you are checking and we will confirm the right device before you order.
