koban KMA 41MF, Manual, Page: 19 / 22

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KMA 41MF
Multi-Function Environment Meter
4 3
6 5
Humidity 25
％～
95
％
RH
Temperature -20.0
℃
－＋
50.0
℃
-4
℉
－＋
122
℉
(K-type) -20.0
℃
－＋
200.0
℃
-20
℃
－＋
750
℃
;
-4.0
℉
－＋
200
℉
, -4
℉
－＋
1400
℉
.
Resolution: 0.1
％
RH, 0.1
℃
, 1
℃
/ 0.1
℉
, 1
℉
.
Accuracy (after calibration):
Humidity:
±5
％
RH (at 25
℃
, 35
％～
95
％
RH)
Response time of the humidity sensor: approx. 6min.
Temperature:
±3%rdg±2
℃
(at-20.0
℃
～
+200.0
℃
)
±3.5%rdg±2
℃
(at-20.0
℃
～
+750
℃
)
±3%rdg±2
℉
(at-4.0
℉
～
+200.0
℉
)
±3.5%rdg±2
℉
(at-4
℉
～
+1400
℉
)
Input Protection: 60V dc or 24V ac rms.
4. PANEL DESCRIPTION
1. LCD display: 3 1/2 digits LCD display with units of Lux, x10 Lux,
℃
,
℉
,%RH, dB, A, C, Lo, Hi and low battery "BAT" MAX HOLD,
DATA HOLD indication.
2. Power Button: Selects meter's power ON or power OFF.
3. Selection Button: Selects meter's Functions and ranges.
4. MAX HOLD: If you press the MAX button, the maximum reading
will be held. Press once again the button, will release the hold and
allow a further measurement.
5. DATA HOLD: The reading will be held when Data Hold button
Switch is pressed. If the button Switch is pressed once again, will
release the hold and allow a further measurement.
6. Function Switch: Selects measurement functions of Lux,
Temperature, Humidity and Sound Level.
7. Microphone: Electric condenser microphone inside.
8. Photo Detector: Long life silicon photo diode inside.
9. Humidity at Temperature: Humidity Sensor and Semiconductor
Sensor inside.
10. Temperature Terminal: Insert the temperature probe in this terminal.
5. OPERATING INSTRUCTION
Measuring Sound Level
1. Turn the function Switch to "dB" position.
2. Remove the meter and face the microphone to sound source in a
horizontal position.
3. Press Select Button: Selects A & dB, C & dB, Lo & dB and Hi & dB.