
MODEL 315 HUMIDITY TEMPERATURE METER
5.2 Humidity Calibration |
1. Turn the unit off. Press and hold the HOLD and °C/°F buttons. While |
these two buttons are pressed, turn the power on. Release all buttons |
MODEL 315 HUMIDITY TEMPERATURE METER
3.0 Symbol Definition and Button Locations:
| and all the segments on the display will blink. |
2. | Within 3 seconds of releasing these buttons, press the UREL button to |
| enter the calibration mode, or the instrument will revert to normal |
| operating mode. |
3. | Upon entering the calibration mode, ‘CAL1’ will appear on the second |
| display. |
4. | Place the probe in a stable 32.8% RH environment at 25°C and allow |
| the system to stabilize for 30 minutes. Press the MAX MIN button to |
| initiate calibration. A single long beep will indicate calibration is |
| complete, and the instrument will advance into the ‘CAL2’ mode, as |
| indicated on the second display. |
5. | Insert the probe in a stable 75.3% RH environment at 25°C and again |
Data Hold indication
Minmum indication
Maximum indication
Low battery indication
Auto power off indication
Relative indication Humidity display
Unit indication
Temperature display
allow the system to stabilize for 30 minutes. Press the MAX MIN button |
to initiate calibration. A single long beep will indicate calibration is |
complete, and the instrument will revert to normal operating mode. |
5.3 Restoring Factory Calibration |
1. To restore factory default calibration values, turn the instrument off. |
Press the HOLD and °C/°F buttons. While these two buttons are |
pressed, turn the power on. Release all buttons and all the segments |
1
Feature Locations:
1) Dust mask
2) LCD display
3) ON/OFF button
4) MAX MIN button
5) HOLD button
6) RELATIVE button
7) °C, °F control button
on the display will blink. | |
2. Within | 3 seconds of releasing these buttons, again press the HOLD |
button | to restore factory calibration values. A single long beep will |
indicate restoration is complete. |
HUMIDITY
8) Battery cover
2 | 9V BATTERY |
| NEDA 1604 6F22 006P |
3
4MAX MIN
5HOLD
6 | REL |
|
7 |
| OPEN |
¢XC / ¢XF | 8 | |
TEMP: | 20 C | 60 C |
| 4 F | 140 F |
HUMIDITY: 0 | 100 %RH |
5 | 2 |