Triplett Test Equipment & Tools MS475 User manual

User Manual

MS475
Moisture Meter/Psychrometer/IR

Thermometer

Introduction

Congratulations on your purchase of the Triplett MS475 Moisture Meter, Psychrometer plus IR
Thermometer. Monitor moisture in wood and other building materials with no surface damage with
the Pinless Moisture sensor (Pin-type Moisture Probe included). Measure Humidity and Air
Temperature with built-in probe plus non-contact InfraRed Temperature with IR design. Advanced
functions provide Grains per Pound, Dew Point and Vapor Pressure calculations.

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Description

Meter Description

1. Laser Pointer

2. IR Temperature Sensor

3. LCD Display

4. COND (Condensation) Button

5. RH (Relative Humidity) Button

6. MOIST REL Button

7. DOWN/ZERO Button

8. UP/UNIT Button

9. Memory Store/ Enter/ALARM Set Button

10. IR Thermometer Button

11. ON/OFF Button

12. Pinless Moisture Sensor

13. Battery Cover

14. Remote Pin Probe Input Jack

15. Humidity Sensor

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Display Icons Description

1. RH% indication – Relative Humidity Mode

2. DEW indication – Dew Point Temperature

3. HIGH/LOW alarm indication - Alarm Limits

4. Pin less moisture measure indication

5. Pin-type probe moisture measure indication

6. Low battery indication

7. GPP unit indication – Grains Per Pound

8. MAX/MIN indication

9. Condensation mode symbol

10. VPP unit indication – Vapor Pressure

11. GPP unit indication

12. Humidity bar display

13. Memory Location indication

14. Pin less moisture zero adjustment symbol

15. Auto power off indication

16. ℃/℉ symbol

17. LCD primary display

18. Laser point indication

19. Dew point temperature indication

20. LCD secondary display

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Safety

Use extreme caution when the laser pointer beam is on

Do not point the beam toward anyone's eye or allow the beam
to strike the eye from a reflective surface

Do not use the laser near explosive gases or in other potentially
explosive areas

Features

Quickly indicates the moisture content of materials with Pinless technology without damaging
the surface;

Pin-type probe allows for moisture readings at different penetration levels (3ft/0.9m
cable length);

Easy to read, large dual display with backlit feature;

Simultaneously displays % moisture of wood or material being tested and Air Temperature, IR
Temperature, or Humidity

Designed with IR design to measure non-contact surface temperature; 8:1 distance to
spot ratio with 0.95 fixed emissivity

Built-in Humidity/Temperature probe measures Relative Humidity,
Air Temperature plus Grains Per Pound (GPP) and Dew Point (DP)
Ambient and Surface Vapor Pressure
Automatic calculation of differential Temperature (IR -

DP) Min/Max and Data Hold
20 point internal memory
Auto power off and low battery indication

Battery Replacement

1. Turn off the meter.

2. Remove one Philips head screw and lift off the rear battery cover.

3. Replace the 9V battery.

4. Secure the rear battery cover.

Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end‐of‐life devices

to a designated collection point for the disposal of electrical and electronic equipment.

Other Battery Safety Reminders

o Never dispose of batteries in a fire. Batteries may explode or leak.
o Never mix battery types. Always install new batteries of the same type.

Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate collection sites,
the retail store where the batteries were purchased, or wherever batteries are sold.

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Operation

Powering the meter

1. Remove the RH sensor protective cap before use.

2. Press the power button to turn the meter on.

3. If the symbol appears or the meter does not turn on, replace the battery.

Humidity (Dew point, GPP, g/kg) Measurements

1. Press the power button to turn the meter on.

2. Press the RH button

3. Relative Humidity will be displayed in the primary display and the ambient temperature will be

displayed in the secondary display.

4. Press the RH button to select a display of DEW Point Temperature (DP) or Grains Per Pound

(GPP) .

5. Press and HOLD the UNITS button to toggle between °F or °C. (GPP or g/kg)

Humidity Alarm Set Procedure:

1. Press the button until the buzzer rings and Release button, the meter shall enter Humidity

Alarm Set mode, the “HIGH” icon appears on the LCD.

2. Press the ▲or ▼button to set the high limit desired.

3. Press the STORE/ENTER button to save the value and proceed to the LOW set value.

4. With the “LOW” icon in the display, Press the ▲or ▼button to set the low limit desired.

5. Press the STORE/ENTER button to save the value and to return to the normal mode.

6. If the humidity measurement is higher than the LOW alarm setting, the meter will beep once

every second

7. If the humidity measurement is higher than the HIGH alarm setting, the meter will beep

continuously.

8. The ambient Temperature or dew point temperature shall be displayed in °F or °C by pressing

▲/UNIT button for 3 to toggle between °F/°C. (GPP or g/kg)

Pinless Moisture Measurements

1. Press the power button to turn the meter on.

2. Press the REL button to select Moisture measurement.” MOIST”, and “INT” (internal pinless

sensor) will appear in the display.

3. Hold the meter so that the rear sensor is away from any surface or your hand. The reading

should be near 0.0. If not, press and hold the ZERO button for more than 2 second and the

ZERO icon appears.

4. Place the rear sensor on the surface of the material to be tested and read the relative moisture

content.

Pin Type Moisture Measurements

1. Connect the external pin probe to the jack on the bottom of the meter.

2. Press the power button to turn the meter on.

3. Press the REL button twice to select Moisture measurement.” MOIST”, and “EXT” (external

pin probe) will appear in the display.

4. Press the probe pins into the material and read the % moisture content in the display.

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Moisture Alarm Set Procedure:

9. With MOIST displayed, simultaneously press the REL button.

10. The “HIGH” icon will appear on the display.

11. Press the ▲or ▼button to set the high limit desired.

12. Press the REL button to save the value and proceed to the LOW set value.

13. With the “LOW” icon in the display, Press the ▲or ▼button to set the low limit desired.

14. Press the STORE/ALARM SET button to save the value and to return to the normal mode.

15. If the moisture measurement is higher than the LOW alarm setting, the meter will beep once

every second

16. If the moisture measurement is higher than the HIGH alarm setting, the meter will beep

continuously.

Infrared Temperature Measurements

1. Press the power button to turn the meter on.

2. Press the IRT button to enable the IR thermometer and the laser pointer. The laser pointer

icon will flash while the mode is active.

3. Aim the laser pointer at the surface to be measured and read the surface temperature in the

secondary display.

4. Release the IRT button. The last temperature measured and the laser icon will remain on the

display for approximately 10 seconds before returning to ambient temperature measurement.
IRT MAX MIN display:

The meter can be set to display only the maximum or minimum temperature measured during an IR
scan.

1. With the meter in the IR hold mode, press the ▼/zero button. “MIN” will appear in

IR Field of View

the display.

2. Press the IRT button to enable the IR thermometer. The meter will display the minimum
temperature measured and will update only when a lower temperature is measured.

3. Press the ▼/zero button twice to enable the MAX mode and proceed as stated above for
the maximum temperature.

4. The MAX or MIN temperature is not stored when the function is exited. The unit
automatically exits MAX/MIN mode after approximately 10 seconds.

Ensure that the desired target is larger than the spot size. As the distance from an object increases,

the spot size of the area measured by the meter becomes larger. The meter’s field of view ratio is

8:1, meaning that if the meter is 8 inches (cm) from the target, the diameter (spot) of the object
under test must be at least 1 inch (cm).

WARNING: Do not directly view or direct the laser pointer at an eye. Low power visible lasers
do not normally present a hazard, but may present some potential for hazard if viewed directly for
extended periods of time.

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Condensation Mode

The Condensation feature alerts the user when the surface temperature
as measured by the IR thermometer is close to or has reached the Dew
Point temperature.

1. Press the power button to turn the meter on.

2. Press the COND button. The “COND” icon will appear.

3. Point the meter at a surface, press the IRT button to measure the
surface temperature. The small display will indicate the IR surface
temperature and the large display will indicate the difference
between the IR temperature and the Dew Point temperature.

4. The meter will then report the potential for condensation on that
surface in the following manner

If the temperature of the IRT is more than 14°C (25°F)
above the Dew Point, the temperature difference shall be

Vapor Pressure Mode

displayed, with no other warning.
If the temperature of the IRT is 3-14°C (5-25°F) above the Dew Point,
the temperature difference shall be displayed, along with a standard
Condensation Indicator icon. The meter shall beep once to confirm
that the reading is in the risk area.
If the temperature of the IRT is less than 3°C (5°F) above the Dew
Point, the temperature difference shall be displayed, along with a
flashing Condensation Indicator icon. The meter shall beep twice to
confirm that the reading is in the high-risk area.

5. Press the RH button to exit the mode.

Ambient Vapor Pressure

1. With the Condensation mode active, press the COND button to display

the Vapor Pressure in mBAR (°F) or kPa (°C). Press the ▲or ▼button

to toggle between mBAR or kPa.

2. Press the REL MOIST or RH button to exit the Vapor Pressure mode.

Surface Vapor Pressure

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1. Enter the Vapor Pressure mode as described above.

2. Press the IRT button and aim the laser pointer at the surface to be
measured to display the Surface Vapor Pressure in mBAR (°F) or
kPa (°C).

Memory Mode

Saving Readings:

1. With the meter in the desired measurement mode, press the STORE
button for 2 seconds until the unit beeps to save a reading into the internal
memory. The numeric display above the MEM icon will indicate the
memory location the reading is stored to.

2. When the 20 memory locations are full, the unit will overwrite old
saved readings starting with memory location 01.

Recalling Stored Readings:

1. Press the ▲and ▼buttons simultaneously to display stored
readings. The numeric display above the MEM icon will flash.

2. Use the ▲or ▼button to scroll through the memory locations.

3. To return to normal operating mode, press the STORE button.

Clearing Stored Data:

1. To clear stored data, press and hold the▼/zero and STORE
buttons simultaneously until CLR appears on the display.

Auto Power Off

The meter will enter a sleep mode after 30 minutes of inactivity. The meter will
emit a warning beep 15 seconds before shutting down.

To disable the APO feature, press the MODE button when turning the meter
ON. The “APO” icon will not appear, indicating it is disabled.

Change Temperature units from F to C or C to F – IR Temperature

1. Press the power button to turn the meter on.

2. Press the IRT button to turn on the IR thermometer and then release the
button.

3. Press and hold the ▲/unit button to set the desired
temperature

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Function

Range

Accuracy

Pinless Moisture

0 to 99.9

± 5%

Pin Type Moisture

6-99 %

± 5%

wood

Pinless Depth

Up to 0.75” (19mm)

RH Measurement

0 to 10%

± 3%RH

11 to 90%

± 2.5%RH

91 to 100%

± 3%RH

Air Temperature

-20 to 170°F (-29 to
77°C)

3.6 F (2.0 C)

IR Temp

-4 to 31 °F (-20 to -1°C)

± 9° F (±5°C)

D:S =8:1

32°F (0°C)

± 1.8°F (+/-1°C)

Emissivity:0.95
Fixed

33 to 392°F (1 to
200°C)

±3.6°F (±2%+2°C)

Display

3-digit primary display, 4-digit secondary display

Vapor Pressure

0 to 20.0kPA, calculated from temperature and RH
measurements

Dew Point

-22 to 199°F (-30 to
100°C )

Mixing Ratio

0 to 160g/kg (0­999GPP)

Sample Rate

2 per second

Backlight

White LED

Memory

20 point memory

Operating
Temperature

40 to 110°F (4 to
43°C)

Storage
Temperature

-14 to 140°F (-30 to
60°C)

Specifications

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Operating Humidity

90%, 32-86°F (0-30°C), 75%, 86-104°F (30-40°C),

45%,104-122°F(40­50°C)

Storage Humidity

90%

Power Supply

9V battery

Battery Life

6-8 weeks (4 hrs/day use), using alkaline batteries

Auto Power Off
(APO)

After 30 minutes (nominal) inactivity. The APO function
can be disabled

by the user.

APO Quiescent
Current

50µA maximum

Dimensions

9.6 x 2.8 x 1.8” (245 x

70 x 45mm)

Weight

8.5oz (240g)

Warranty Information

Triplett / Jewell Instruments extends the following warranty to the original purchaser of
these goods for use. Triplett warrants to the original purchaser for use that the products sold
by it will be free from defects in workmanship and material for a period of (1) one year from
the date of purchase. This warranty does not apply to any of our products which have been
repaired or altered by unauthorized persons in any way or purchased from unauthorized
distributors so as, in our sole judgment, to injure their stability or reliability, or which have
been subject to misuse, abuse, misapplication, negligence, accident or which have had the
serial numbers altered, defaced, or removed. Accessories, including batteries are not
covered by this warranty

Copyright © 2020 Triplett

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