We, Auro Electronics (India) Pvt. Ltd., are manufacturing Digital Panel Meter since 1981. Our passion for quality has been appreciated. Our DPM's have been the winners of prestigious "WISITEX" award.
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ACR Four Channel Logger: Temperature, Humidity with options for external Temperature and Humidity
The SmartReader 2 data logger has a built-in temperature sensor, a plug-in relative humidity sensor and is equipped with two extra channels to connect either ACR’s temperature/RH probe or thermistor probes. The RH sensor is field replaceable so you can always be assured of continuous recording. The SmartReader 2 is excellent for monitoring “air quality” conditions.
Four (one for the internal temperature sensor and one for the internal RH sensor and the remaining two channels can use either ACR’s temperature/RH probe or thermistor probes
Memory
32 KB (32,767 readings)
Size
107 x 74 x 22 mm. (4.2” x 2.9” x 0.9”)
Weight
110 grams (3.75 ounces)
Case Material
Noryl Plastic
External Connector
Removable screw-type terminal strip with Common (-) connection
Mounting
Magnetic backing or locking eyelet
Operating Limits
-40°C to 70°C (-40°F to 158°F) and 0 to 95%
Relative Humidity (non-condensing)
Clock Accuracy
±2 seconds per day
Battery
3.6 volt Lithium, 1 Amp-Hour
Battery Life
10 year warranty (under normal use), factory replaceable
Power Consumption
5 to 10 microamps (continuous)
Sampling Methods
1. Continuous (First-in, First-out)
2. Stop when full (Fill-then-stop)
Sampling Rates
User selectable rates from 8 seconds to once every 5 days
Resolution
8 bit (1 part in 256)
Software Compatiblity
Windows 3.1, 95, 98, 2000, ME, NT, XP, Vista (32-bit), Windows 7 (32-bit and 64-bit)
- Certified to CE standard EN50082-1: 1992 (European Generic Immunity) covering ESD, RFI and EFT/B
-Meets CE standards EN55011 Class B: 1991 (European Radiated Emissions) and CISPR Class B: 1991(International Radiated Emissions)
Resistance to X-Rays
- Tested for protection against a 160kV dose @ 5mA for 30
seconds (150mA-sec) @ 38 inches F.F.D. (about 100 times that of an airport x-ray machine)
- Tested for protection against Gamma Ray (equivalent to 0.137-1.38 mega volts) IR 192 - 28 curies @ 30 second exposure source to object
distance 5”
Internal Temperature Sensor
Type
Negative Temperature Coefficient Thermistor.
10,000 ohms @ 25°C (77°F)
Accuracy
± 0.2°C, over the range of 0 to 70°C (±0.3°F over the range of 32 to 158°F)
Range
-40 to 70°C (-40 to 158°F)
Resolution
0.4°C (0.7°F) at 25°C (77°F); better than 1 °C (1.8°F) between -25°C and 70°C (-13°F and 158°F); better than 2.0°C (3.6°F) between -40°C and -25°C (-40°F and -13°F)
Internal Humidity Sensor
Type
Capacitive thin polymer film
Range
0 to 95% RH (non-condensing)
Acccuracy
± 4% RH from 10 to 90% RH (-20 to 40°C [-4 to 104°F])
Resolution
Better than 0.4% RH between 25 and 60% RH @ 25°C (77°F)
Response Time
Adequate ventilation increases the response time which is approximately 5 minutes in still air
Environmental Conditions
Like all relative humidity sensors, when exposed to contaminants and/or extreme environmental conditions, accuracy degradation could result. For maximum long term stability, sensor should not be exposed or subjected to organic solvents, corrosive agents (strong acids, SO2, H2SO4, Cl2, HCl, H2S, etc.), and strong bases (compounds with PH greater than 7). Dust settling on the sensor surface will not affect sensor performance except possibly to decrease the speed of response.
