Thermosense HDT-318 Instruction Manual

HDT-318

Thermo-Hygrometer with Data Logger

(Air Humidity/Temperature)

Instruction Manual

HDT-318 Thermo-Hygrometer with Data Logger Instruction Manual v1.0

Thermosense Limited

www.thermosense.co.uk

Page 1

CONTENTS

1. SAFETY INFORMATION ................................................................................................................. 2

2. GENERAL DESCRIPTION .............................................................................................................. 2

3. FEATURES ...................................................................................................................................... 2

4. SPECIFICATIONS ........................................................................................................................... 3

5. SYMBOL BUTTONS AND FUNCTIONS ......................................................................................... 4

6. DATA LOGGER ............................................................................................................................... 7

7. SETTING THE TIME ........................................................................................................................ 8

8. POWER PREPARATION ................................................................................................................. 8

9. COMMUNICATION WITH A PC ....................................................................................................... 9

TESTLINK SE-318 SOFTWARE ..................................................................................................... 9

10. MAINTENANCE .......................................................................................................................... 13

11. CONNECTION BETWEEN PROBE AND DEVICE ...................................................................... 13

HDT-318 Thermo-Hygrometer with Data Logger Instruction Manual v1.0

Thermosense Limited

www.thermosense.co.uk

Page 2

1. SAFETY INFORMATION

Read the following safety information carefully before attempting to operate or service the meter.
Use the meter only as specified in this manual; otherwise the protections provided by the meter may
be impaired.

ENVIRONMENT CONDITIONS:

 Altitude up to 2000 meters
 Relatively humidity: 90% max
 Operation ambient temperature: 0 to 40°C

MAINTENANCE & CLEARING:

 Repairs or servicing not covered in this manual should only be performed by qualified personnel.
 Periodically wipe the case with a dry cloth. Do not use abrasives or solvents on this instrument.

SAFETY SYMBOLS:

Comply with EMC

When servicing, use only specified replacement parts.

2. GENERAL DESCRIPTION

Thank you for choosing our Thermo-Hygrometer Data Logger. To ensure the safety and the best
performance of this instrument, we recommend you read and follow the manual carefully before any
operation.

Measurement settings and results are shown on the backlit LCD panel.
Data can be stored in the meter or directly saved on a computer through the PC interface. Recorded

data can be further processed on a computer.

3. FEATURES

 High accuracy
 Thermistor sensor for temperature measurement, fast response time
 Backlit dual display
 Dew point measurement
 Records up to 16,000 records
 PC Interface
 Free Windows software
 Auto power off for battery saving

HDT-318 Thermo-Hygrometer with Data Logger Instruction Manual v1.0

Thermosense Limited

www.thermosense.co.uk

Page 3

4. SPECIFICATIONS

Sensor type: Electronic capacitance polymer film sensor / NTC
Relative humidity range: 0 to 100%RH

Temperature range: -20 to 60°C (- 4 to 140°F)

Dew point temperature range: -20 to 60°C (- 4 to 140°F)
Resolution: 0.1%RH, 0.1°C, 0.1°F
Accuracy: (at 23°C)

<Probe: RP-32>

<10%RH, >90%RH

±4.0%RH

10%RH to 90%RH

±2.0%RH

-20 to 60°C (-4 to 140°F)

±0.8°C (±1.5°F)

<Probe: RP-31>

<10%RH, >90%RH

±5.0%RH

10%RH to 90%RH

±3.0%RH

15 to 35°C (60 to 95°F)

±0.8°C (±1.5°F)

<15°C (60°F), >35°C (95°F)

Refer to chart

Response time: (@ t90; in slowly moving air) ; Humidity: 60 sec. ; Temperature: 10 sec.

Sensor hysteresis: <1.5%RH

Temperature coefficient: 0.1 x (specified accuracy) per 1°C (<23°C or >23°C)
Sample rate: 2 times per second
Battery type: 9V Battery
Battery lifetime: Approx. 80 hours (alkaline battery)
AC adapter: 9V DC(7~10V Max.)/20mA Min (Plug Diameter: 3.5mmx1.35mm)
Operation temperature: 0 to 40°C (32 to 104°F)
Operation humidity: 10 to 90%RH

Storage temperature: -10 to 60°C (14 to 140°F)

Storage humidity: 10 to 75%RH
Dimensions:

Meter: 185mm(L) × 65mm(W) × 36mm(H)
Probe: RP-32: 15mm Diameter x 94mm(L); RP-31: 15mm Diameter x 82mm(L)

Weight: Approx. 285g
Standard Accessories:

Instruction manual, 9V Battery, windows software, carrying case, USB cable.
Optional Accessories:
AC adapter, RS-232 Cable, Extension cables, 33%RH/ 75%RH humidity standard.

HDT-318 Thermo-Hygrometer with Data Logger Instruction Manual v1.0

Thermosense Limited

www.thermosense.co.uk

Page 4

5. SYMBOL BUTTONS AND FUNCTIONS

: Low battery indicator

: Auto power off indicator

: Minimum / maximum indicator

: Relative Humidity reading

: Recording data logger indicator

: Dew point temperature

: Data hold indication

: Month-day

: Hour: minute

: Temperature reading

: Temperature measurement units