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HOBO RH/Temp/Light/External Data Logger


Part Number:  H08-004-02
Price:   $115.00

Accessories and Ordering Information


HOBO RH/Temp/ Light/External
2.4" x 1.9" x 0.8"
(68 x 48 x 19 mm)
4-Channels: Temperature, Relative Humidity, Light Intensity and External Input 

The HOBO RH/Temp/Light/External has 4-Channels: 1 for temperature, 1 for relativity humidity, 1 for light intensity and 1 that will accept an external input. It will measure and record up to 7,943 readings.  It's reading rate is user selectable with sampling intervals being 0.5 seconds to 9 hours, recording times up to 1 year. Additional features include programmable start time/date, nonvolatile EEPROM memory which retains data even if battery fails and an extendable internal temperature sensor. 

Features and Specifications
  • Capacity: 7,943 measurements total
  • User-selectable sampling interval: 0.5 seconds to 9 hours, recording times up to 1 year
  • Readout and relaunch with optional HOBO Shuttle
  • Internal temperature sensor on 4" wire can extend from case
  • Models with external input accept external sensors for temperature, AC current, 4-20 mA and 0-2.5 Volts DC
  • Precision components eliminate the need for user calibration
  • Drop-proof to 5 feet
  • Mounting kit included (hook/loop, magnet, and tape)
  • Programmable start time/date
  • Memory modes: stop when full, wrap-around when full
  • Nonvolatile EEPROM memory retains data even if battery fails
  • Blinking LED light confirms operation
  • User-replaceable battery lasts 1 year
  • Battery level indication at launch
  • Operating range: -4°F to +158°F (-20°C to +70°C), 0 to 95% relative humidity, non-condensing, non-fogging (see RH sensor range below) 
  • Time accuracy: ±1 minute per week at +68°F (+20°C)
  • Size/Weight: 2.4 x 1.9 x 0.8" (68 x 48 x 19 mm)/approx. 1 oz.(29 gms)
  • Compliance certificate available
  • Compatible with Keyspan USB 4-Port Serial Adapter for USB Connectivity
Light intensity
  • Range: 2 to 600 footcandles (lumens/ft2)
  • Accuracy: ±2 footcandles, ±20% of reading
  • Angular response: roughly cosine of the angle from directly above sensor
  • Light wavelength response, see plot below

Temperature (internal sensor)
  • Range: -4°F to +158°F (-20°C to +70°C)
  • Range for internal sensor when used outside of case:
    -40°F to +248°F (-40°C to +120°C)
  • Accuracy: ±1.27°F (±0.7°C) at +70°F, see plot to the right
  • Resolution: 0.7°F (0.4°C) at +70°F
  • Response time still in air: 15 min. typical with sensor inside case; 1 min. typical with sensor outside case

Relative humidity (user-replaceable RH sensor)
  • Range: 25% to 95% RH at +80°F for intervals of > 10 seconds, non-condensing and non-fogging, see plot to the right.
  • Accuracy: ±5%
  • Response time 10 min. typical in air
  • Sensor operating environment: +41°F to +122°F (+5°C to +50°C) non-condensing and non-fogging

External input accepts the following sensors:

  • Wide range of temperature sensors (TMCx-Hx series)
  • Split-core CTs for AC current (5 Models)
  • 4-20 mA input cable (CABLE-4-20mA)
  • 0-2.5 V DC input cable (CABLE-2.5-STEREO)
External 2.5 volt input specifications
  • 2.5 mm jack: external input ground, input, switched 2.5 V output; external input ground connection is not the same as PC interface connection ground and should not be connected to any external ground
  • Input range: 0 to +2.5 Volts DC
  • Accuracy: ±10 mV ±1% of reading
  • Resolution: 10 mV (8-bit)Out power: +2.5 Volts DC at 2 mA, active only during measurements
Light Intensity FAQ's:

Can I use the light sensor on the H08-004-02 logger as an inexpensive light meter?
No! These light intensity loggers are designed to give you a general comparative idea of how much light there is in an area; sunlight v. shade, lights on/off, etc. If you are planning on recording specific lighting information or absolute values, these loggers will not give you accurate data. 
Please note that the light sensor on this logger will record from 2 to 600 lumens per sq/ft. Full sunlight is 10,000 lumens per sq/ft. This sensor is intended for indoor light levels only. 

The light sensor on the H08-004-02 measures in lumens/sq foot. How does this measurement relate to Lux and Foot-candles?
The two most popular scales for light measurement are Lux, which is the European scale, and Foot-candles which is the U.S. scale.
Lux and Foot-candles are measure of illumination - the amount of light falling on an object per unit area. The difference is whether the light is measured in square meters or square feet: 
1 lumens / sq. meter = 1 lux
1 lumens / sq. foot = 1 foot-candles

How can I convert between lux and Foot-candles?
To convert between lux and foot-candles the following factors can be used:

Lux =0.0929 * FC
FC= 10.76 * Lux

Other light sensors are available for the Hobo Weather Station Data Logger

Software and Accessories

NOTE: A BoxCar Pro or BoxCar starter kit is required to operate any of the H8 Family loggers. Each Box Car starter kit includes software, PC interface cable and software manual.

Ordering Information
On-Line Ordering Information    |        View Shopping Cart Contents    |    Checkout
Description Part Number Qty 1-9 Qty 10+  
HOBO RH/Temp/Light/External, 4 channels H08-004-02
$115.00 $107.00
Software Starter Kits - One Required
BoxCar Pro 4.3 Software and Serial Cable Kit BCP4.3-DL
$110.00 $103.00
BoxCar 3.7 Software and Serial Cable Kit BC3.7
$39.00 $37.00
Optional Accessories
Extra/Replacement Batteries (pack of 5) - CR2032 lithium batteries HRB-Temp-5
$8.00 $7.00
Extra Serial Interface Cable Cable-PC-3.5
$9.00 $8.00
Glacier Clear Xtreme Protective Case (3.93" x 2.4" x 0.94") T1000.1
$9.00 call
Blue Xtreme Protective Case (3.93" x 2.4" x 0.94") T1000.4
$9.00 call
USB 4-Port Serial Adapter USA-49WG
$149.00 call
Waterproof Temperature Sensors
1ft Air/Water/Soil temperature sensor TMC1-HD
$28.00 $26.00
6ft Air/Water/Soil Temperature Sensor TMC6-HD
$30.00 $28.00
20ft Air/Water/Soil temperature sensor TMC20-HD
$35.00 $33.00
50ft Air/Water/Soil temperature sensor TMC50-HD
$40.00 $38.00
Stainless Steel Temperature Probe
Stainless Steel Temperature Probe (4" Probe with 6' Cable) TMC6-HC
$75.00 $69.00
Voltage 
Voltage Input Cable Cable-2-5-Stereo
$8.00 $7.00
Voltage Transmitters 
conLab AC Voltage Transmitter - 150 VAC T-CON-ACT-150
$135.00 call
conLab AC Voltage Transmitter - 300 VAC T-CON-ACT-300
$135.00 call
4-20mA
4-20 mA Cable Cable-4-20ma
$22.00 $17.00
Split Core AC Sensors
0-20 Amp split-core AC Current Sensor CTV-A
$86.00 $80.00
0-50 Amp split-core AC current sensor CTV-B
$86.00 $80.00
0-100 Amp split-core AC current sensor CTV-C
$86.00 $80.00
0-200 Amp split-core AC Current Sensor CTV-D
$109.00 $101.00
0-600 Amp split-core AC Current Sensor CTV-E
$109.00 $101.00
Carbon Dixoide
Telaire 7001 Carbon Dioxide (CO2) Monitor TELAIRE-7001
$449.00 $439.00
Telaire CO2 Monitor to Data Logger Cable Cable-CO2
$25.00 $23.00
Standard NIST Calibration Service
Standard NIST Temperature Calibration (1 Point) CAL-NIST-TEMP $40.00Temp:
  • To order external sensors and input cables for Temperature, AC Current, 4-20mA or 0-2.5 Volts DC click here.
  • You may change quantities from within your cart.
  • If you do not wish to order online call us toll free at 877-275-9606 between the hours of 9-5 Eastern Standard time.

 

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