PDi DP-110 Operation Manual

1 2

DP-110

IN-DUCT DIGITAL PSYCHROMETER

OPERATIONS MANUAL

Humidity & Temperature Meter with

Wet Bulb Temperature and

Dew Point Temperature

TABLE OF CONTENTS

TITLE PAGE

INTRODUCTION 3
FEATURES 3
SPECIFICATIONS 4
METER DESCRIPTION 6
HUMIDITY AND TEMPERATURE 8
MEASUREMENTS
BATTERY REPLACEMENT 8
WARRANTY 9

3 4

1. INTRODUCTION

The In-Duct Digital Psychrometer has been designed to
combine the functions of a Humidity Meter, Temperature Meter,
Wet Bulb Temperature Meter and Dew Point Temperature
Meter; all in one easy to use, compact instrument.

The DP-110 is an ideal Humidity & Temperature Meter with
nearly unlimited practical applications for HVAC/R, industrial
maintenance, and professional engineering.

2. FEATURES

 Fast Response Time %RH: 10 Sec. (90% at 25℃ still air)
 6” Flex-neck probe for in-duct measurements
 High Accuracy
 Dew Point Temperature (-30℃~100℃/-22°F~212°F)
 Wet Bulb Temperature ( 0℃~80℃/32°F~176°F)
 Resolution 0.01%RH, 0.01℃/0.01°F
 Max/Min and Hold functions
 Dual Display, Temperature & Humidity
 Auto Power Off, with disable Auto Power Off mode
 Backlight
 Compact Design
 Size (H*W*D): 225*45*34mm (not including flex probe)
 Weight: 200g

3. SPECIFICATIONS

Display: 4 ½ digit, dual LCD display with backlight
Sensor Type: A single chip relative humidity and

temperature sensor module

Response Time: %RH: 10 seconds (90% at +25℃ still air)
Accuracy Note: Accuracy is specified for the following

ambient temperature range: 64 to 82°F (18 to 28°C)

Sampling Rate: 2.5 samples per second
Polarity: Automatic, (-) negative polarity indication.
Out of Range: “Hi” for over-range, “Lo” for under-range
Low Battery Indication: The “ ” is displayed when

the battery voltage drops below the operating level.

Operating Conditions:

-22 to 212oF (-30 to 100oC); < 80% RH, non-condensing
Storage Conditions: 14 to 140oF (-10 to 60oC); <80% RH

non-condensing

Auto Power Off: Meter automatically shuts down after

approximately 15 minutes of inactivity

Disable Auto Power Off: While meter is off, press and hold

Hold/Backlight button then power on meter. After the full
display appears, release both buttons. Auto Power Off icon
“ ” will not appear on the LCD. The unit will not auto
power off now.

Power: One standard 9V, NEDA1604 or 6F22 battery.
Dimensions/Wt.: 225 (H) x 45 (W) x 34 (D) mm/200g

Humidity / Temperature Measurement Range:
Humidity: 0%~100%RH