USB-500/600 Series
Stand-Alone, Low-Cost Data Loggers and Accessories
Features• Stand-alone remote dataloggers and portable logger
assistant• Measure temperature,humidity, voltage, current, or
event/state change• 1 or 2 channels• Low cost, small size
• Battery powered• Start/stop logging directlyfrom device on USB-600 Series
loggersUSB-500/600 Series data loggers offer low-cost, stand-alone data collection for temperature,humidity, voltage, current, or event/state change.

Overview

Software• Includes easy‑to‑use software to
set sampling interval, alarms,
start time, and other options

The USB-500/600 Series of stand-alone data loggers record several types of environmental readings. Users can easily set up the logging interval and start-time,
log data, and then download the data over USB to the computer.

• Easily display, graph, and savedata in formats such as .csv toimport into Microsoft® Excel®

Logged data can then be graphed, printed, and exported to Excel. Each data logger
is powered by a long-life lithium battery which lasts for up to a full year.

• Supported Operating Systems:
Windows® 8/7/Vista®/XP,
32-/64-bit

Several models are available with different measurement input types, samplingintervals, and amount of built-in memory.

USB-500/600 Series Comparison Chart
Model

Channels

Measurement Type

Temperature
Measurement Range

Sampling Interval

MemoryFeaturesUSB-501-LT*

1Temperature–10 °C to 50 °C

USB-501*1

Temperature–35 °C to 80 °C

15 min to 2 h

4 K readings—

10 s to 12 h

16 K readings—

USB-501-LCD*

1

TemperatureUSB-501-PRO*

1

Temperature–35 °C to 80 °C

1 s to 12 h

16 K readings

Built-in LCD Display–40 °C to 125 °C

1 s to 12 h

32 K readings

Extended
Temperature Range

USB-501-RCG*

1

Temperature–20 °C to 60 °C

1 s to 12 h

32 K readings

Rechargeable Battery

USB-501-TC*

1

Thermocouple

Thermocouple-dependent

1 s to 12 h

32 K readings—

USB-501-TC-LCD*

1

Thermocouple

Thermocouple-dependent

1 s to 12 h

32 K readings

Built-in LCD Display

USB-502*2

Temperature, Humidity–35 °C to 80 °C

10 s to 12 h

16 K readings—

USB-502-LCD*

2

Temperature, Humidity–35 °C to 80 °C

10 s to 12 h

16 K readings

Built-in LCD Display

USB-502-PLUS*

2

Temperature, Humidity–35 °C to 80 °C

10 s to 12 h

16 K readings

Increased Accuracy

USB-503

1

0 VDC to 30 VDC—

1 s to 12 h

32 K readings—

USB-504

1

4 mA to 20 mA—

1 s to 12 h

32 K readings—

USB-505

1

Event/State Change—

10 s to 30 m

32 K readings—

USB-6011

Temperature–30 °C to 80 °C

10 s to 2 h

250 K readings

USB-6022

Temperature, Humidity–30 °C to 80 °C

10 s to 2 h

250 K readings

USB-603

2

Thermocouple

Thermocouple-dependent

2 s to 2 h

250 K readings

Graphic Display,
Stores Multiple
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USB-500/600 Series
General Information
Analog Input

Real-Time LCD Display

One or two channels are available on USB-500/600 Series dataloggers. Devices are available with temperature, thermocouple,
humidity, voltage, current, or event inputs.

The following USB-500/600 Series data loggers feature a
built-in LCD for real-time text display of data:•USB-501-LCD•

USB-601

Sampling Interval•

USB-501-TC-LCD•

USB-602•

USB-502-LCD•

USB-603

Loggers can be programmed with sampling intervals from 1 second
to as long as 12 hours, depending on your data collection needs
and the logger you are using. The logger stores the data and thenuploads it to a computer through USB when collection is complete.

The LCD on all of these loggers can display current and maximum/minimum stored temperature and humidity values.
The LCD on the USB-601, USB-602, and USB-603 also display
the following information:

Logger Start Modes
Depending on the USB-500/600 Series logger being used, users canconfigure a device to start logging in one of the following ways:•

graphical display of temperature/humidity•

logging start mode (if logging does not start immediately)•

start immediately•

alarm indicators•

start when logger button pressed (loggers with LCDs only)•

animated icon indicating device is logging•

start at selected date and time••

start based on temperature or humidity condition(USB-600 loggers only)

locked mode indicator when start/stop logging button isdisabled

AlarmsAll USB-500/600 Series data loggers except for the USB-505 provide high alarm and low alarm options that can be set throughsoftware. Users can also enable a hold on each alarm so that an
alarm status continues even if the logged value is no longer inan alarm condition. The hold option allows users to be notified
of an alarm condition without having to download data fromthe logger.
Alarms are indicated by LED blink patterns. USB-600 Series dataloggers also have LCD and audible alarm indicators.

Status LEDs
Each USB-500/600 Series data logger includes one or two LEDs
which indicate logging status and alarm conditions.

The USB-601, USB-602, and USB-603 are the newest additions to
the USB-500/600 Series of data loggers. USB-600 Series loggers
offer device controls to start and stop logging, LCD and audible
alarm indicators, the ability to store multiple logging sessions
between downloads, and graphical data displays.

Some loggers also have LED indicators for battery and memory
status.

Multiple Logging Sessions(USB-600 Series Only)
Users can start and stop logging on the USB-600 Series data loggers
either through software or using the buttons on the logger. Thisfeature allows for storing of multiple logging sessions in between
downloads.

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USB-500/600 Series
SoftwareUSB-500/600 Series Data Logger
SoftwareUSB-525 Logger Assistant
The ultra-portable USB-525 Logger
Assistant allows the user to conveniently
program compatible USB-500 model loggers and view the data on a high-resolution
screen.

Each USB-500/600 Series data logger includes an easy‑to‑use
software application which allows users to configure the following settings:•

sampling interval•high/low alarm options•

temperature scale•

logger start mode•

buffer management•

LED and LCD power saving options

The USB-525 is compatible with the following temperature/humidity data loggers:

Settings vary depending on the data logger you are using.
Use the included software to download, display, and save data toa file. The loggers also record maximum and minimum values.
Logged temperature, humidity, dew point, voltage, and current
data can also be exported to comma-separated values (.csv) andtext formats for display and analysis in popular spreadsheet
programs such as Microsoft Excel.

•

USB-501-LT•

USB-501-TC•

USB-501•

USB-501-TC-LCD•

USB-501-LCD•

USB-502•

USB-501-PRO•

USB-502-LCD•

USB-501-RCG•

USB-502-PLUS

Connect a data logger directly to the USB port on the USB-525,
and follow the instructions on the touch-screen display to set
up a compatible logger, download data, view data, and export
data for use in a spreadsheet application. Logger setup and data
display can be done on site without the need of a computer,
reducing interruptions in data collection and decreasing travel
by users between sites.
Logged data can also be transferred to a computer over the
included micro-USB cable for display using the USB-500/600
Data Logger software.

Specifications
All specifications are subject to change without notice.
Typical for 25 ˚C unless otherwise specified.

USB-501-LT
Lowest Cost Temperature Logger
Temperature

Measurement range: –10 ˚C to 50 ˚C(14 ˚F to 122 ˚F)Internal resolution: 1 ˚C (2 ˚F) typ
Accuracy (overall error): ±2.5 ˚C (±4.5 ˚F) max

Data Sampling

Sampling intervals (software-selectable): 15 min, 30 min, 1 h, 2 h
Max temperature samples: 4,080
Units: ˚C or ˚F

The included USB-500/600 Data Logger software displays recorded
measurements in an easy‑to‑read chart. Movable markers isolate data
values along with a time stamp. Temperature, humidity, dew point,
voltage, or current measurements are displayed. In addition, high andlow alarms are also shown.

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

PowerPower source: CR1620 lithium button cell
Battery life: 1 month

Environmental

Operating temperature range: –10 ˚C to 50 ˚C (14 ˚F to 122 ˚F)

Mechanical

Dimensions (L × W × H): 2.67 × 0.72 × 0.72 in. (68 × 18.5 × 18.5 mm)

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USB-500/600 SeriesSpecifications
USB-501

USB-501-PRO

Temperature Logger

Temperature Logger with Rugged Enclosure

Temperature

Temperature

Measurement range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)Internal resolution: 0.5 ˚C (1 ˚F) typ
Accuracy (overall error): ±1 ˚C (±2 ˚F) typ

Measurement range: –40 ˚C to 125 ˚C (–40 ˚F to 257 ˚F)Internal resolution: 0.1 ˚C (0.2 ˚F) typ
Accuracy (overall error): ±0.2 ˚C (±0.4 ˚F) typ,±0.5 ˚C ( ±1.0 ˚F) max, when operating between 0 ˚C and 40 ˚C

Data Sampling

Data Sampling

Sampling intervals (software-selectable): 10 s,
30 s, 1 min, 5 min, 15 min, 30 min, 1 h, 2 h,
6 h, 12 h
Max temperature samples: 16,382
Units: ˚C or ˚F

Sampling intervals (software-selectable): 1 s, 2 s, 5 s, 10 s,
30 s, 1 min, 5 min, 15 min, 30 min, 1 h, 2 h, 6 h, 12 hTemperature samples: 32,510
Units: ˚C or ˚F
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when the memory is full

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

PowerPower source: 1/2AA 3.6 V lithium battery
Battery life: 3 years @ 25 ˚C and 1 min logging rate

PowerPower source: 2/3AA 3.6 V lithium battery
Battery life: 2 years at 80°C and 10 s logging rate

Environmental

Moisture and dust protection: Protective cap installed, IP67
Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)

Environmental

Mechanical

Dimensions (L × W × H): 99 × 25 × 23 mm (3.89 × 0.98 × 0.90 in.)Operating temperature range: –40 ˚C to 125 ˚C (–40 ˚F to 257 ˚F)
Moisture and dust protection: Protective cap installed, IP67
Corrosion protection: Stainless steel housing, 316 grade

USB-501-LCD

Mechanical

Dimensions (L × W × H): 110 × 18 mm (4.33 × 0.70 in.)

Temperature Logger with LCD

USB-501-RCG

Temperature

Measurement range: -35 °C to 80 °C (-31 °F to 176 °F)
Internal resolution: 0.5 ˚C (1.0 ˚F) typ
Accuracy (overall error): ±0.5 ˚C (±1.0 ˚F) typ,±1.5 ˚C ( ±3.0 ˚F) max, when operating
between 0 ˚C and 40 ˚CTemperature Logger with
Rechargeable Battery
Temperature

Measurement range: –20 ˚C to 60 ˚C (–4 ˚F to 140 ˚F)Internal resolution: 0.1 ˚C (0.2 ˚F) typ
Accuracy (overall error): ±1 ˚C (±2 ˚F) typ

Data Sampling

Sampling intervals (software-selectable): 1 s, 2 s,
5 s, 10 s, 30 s, 1 min, 5 min, 15 min, 30 min, 1 h,
2 h, 6 h, 12 hTemperature samples: 16,379
Units: ˚C or ˚F
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when the memory is full

Data Sampling

Sampling intervals (software-selectable): 1 s, 2 s, 5 s, 10 s, 30 s, 1 min, 5 min,15 min, 30 min, 1 h, 2 h, 6 h, 12 hTemperature samples: 32,510
Units: ˚C or ˚F
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when the memory is full

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

PowerPower source: 1/2AA 3.6 V lithium battery
Battery life: 1 year max @ 1 min logging rate,

PowerPower source: Rechargeable lithium battery
Battery life: 4 weeks at 20 °C and 1 min logging rate
Recharging time: 5 hr

Environmental

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)
Moisture and dust protection: Protective cap installed, IP67

Environmental

Operating temperature range: –20 ˚C to 60 ˚C (–4 ˚F to 140 ˚F)
Moisture and dust protection: Protective cap installed, IP67
Corrosion protection: Protective cap installed, stainless steel housing, 316 grade

Mechanical

Dimensions (L × W × H): 120 × 25 × 22 mm (4.72 × 0.98 × 0.86 in.)

Mechanical

Dimensions (L × W × H): 3.66 × 0.78 in. (93 × 20 mm)

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USB-500/600 SeriesSpecifications
USB-501-TC

Power

Thermocouple Logger

Power source: 1/2AA 3.6 V lithium battery
Battery life: 2 years at 25°C and 1 min logging rate

Temperature

Environmental

Probe measurement range
K-type thermocouple: –200 ˚C to 1350 ˚C(–328 ˚F to 2462 ˚F)J-type thermocouple: –200 ˚C to 1190 ˚C(–328 ˚F to 2174 ˚F)T-type thermocouple: –200 ˚C to 390 ˚C(–328 ˚F to 734 ˚F)Internal resolution: 0.5 ˚C (1 ˚F) typ
Accuracy (overall error): ±1 ˚C (±2 ˚F) typ

Operating temperature range: –10 ˚C to 40 ˚C (14 ˚F to 104 ˚F)

LCD Status Indicators

The high-contrast LCD shows temperature data and information regarding thelogger status.
Temperature (˚C/˚F): Current temperature, stored max, and stored min values
LCD mode (software-selectable): Always on; on for 30 seconds after the LCD
button is pressed; always off

Mechanical

Dimensions (L × W × H): 135 × 24 × 21 mm (5.31 × 0.94 × 0.82 in.)

Included Thermocouple Probe

Type: K
Measurement range: 0 ºC to 200 ºC (32 ºF to 392 ºF)
Accuracy: ±2.5 ºC (±4.5 ºF)Connector type: Mini-thermocouple
Cable length: 1.5 m
Stainless steel probe length: 100 mm

USB-502
Temperature & Humidity Logger
Temperature

Measurement range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)Internal resolution: 0.5 °C (1 °F) typ
Accuracy (overall error)*: ±0.55 ˚C (±1.04 ˚F) typ(5 ˚C to 60 °C)
Long term stability: <0.02 °C (0.04 °F) per year
Alarm threshold range (software-selectable):–35 ˚C to 79.5 ˚C (–31 ˚F to 175 ˚F), high and low
alarmsData Sampling

Sampling intervals (software-selectable): 1 s, 2 s, 5 s, 10 s, 30 s, 1 min, 5 min,15 min, 30 min, 1 h, 2 h, 6 h, 12 h
Max temperature samples: 32,510
Units: ˚C or ˚F

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Relative Humidity (%RH)

Measurement range: 0% to 100%
Accuracy (overall error)*: ±3.0 typ
Internal resolution: 0.5% RH
Long term stability: <0.25% RH / year
Alarm threshold range: 0% to 99.5% (high and low alarms)

PowerPower source: 1/2AA 3.6 V lithium battery
Battery life: 2 years at 25°C and 1 min logging rate

Environmental

Dew Point

Operating temperature range (data logger only): –10 ˚C to 40 ˚C (14 ˚F to 104 ˚F)Accuracy (overall error)*: ±1.7 ˚C typ (–35 °C to 80 °C, 40% RH to 100% RH)

Mechanical

Data Sampling

Dimensions (L × W × H): 118 × 27 × 27 mm (4.64 × 1.06 × 1.06 in.)Sampling intervals (software-selectable): 10 s, 30 s, 1 min, 5 min, 15 min, 30 min,
1 h, 2 h, 6 h, 12 hTemperature samples: 16,382 max
Relative humidity samples: 16,382 max
Temperature units: ˚C or ˚F
Logging modes: Immediate and delayed start

USB-501-TC-LCD
Thermocouple Logger with LCD
Temperature

Probe measurement range
K-type thermocouple: –200 ˚C to 1350 ˚C(–328 ˚F to 2462 ˚F)J-type thermocouple: –200 ˚C to 1190 ˚C(–328 ˚F to 2174 ˚F)T-type thermocouple: –200 ˚C to 390 ˚C(–328 ˚F to 734 ˚F)Internal resolution: 0.5 ˚C (1 ˚F) typ
Accuracy (overall error): ±1 ˚C (±2 ˚F) typ

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

PowerPower source: 1/2AA 3.6 V lithium battery
Battery life: 3 years at 25°C and 1 min logging rate

Environmental

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)
Ingress protection: Meets IP67 Standard with protective cap installed

Included Thermocouple Probe

Type: K
Measurement range: 0 ºC to 200 ºC (32 ºF to 392 ºF)
Accuracy: ±2.5 ºC (±4.5 ºF)Connector type: Mini-thermocouple
Cable length: 1.5 m
Stainless steel probe length: 100 mm

Mechanical

Dimensions (L × W × H): 108 × 25 × 22 mm (4.25 × 0.98 × 0.86 in.)

Data Sampling

Sampling intervals (software-selectable): 1 s, 2,s, 5 s, 10 s, 30 s, 1 min, 5 min,15 min, 30 min, 1 h, 2 h, 6 h, 12 hTemperature samples: 32,510 max
Units: ˚C or ˚F
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when the memory is full.

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Measurement Computing* The overall error takes into account the sensor accuracy and the data logger
resolution. Refer to the USB-502/USB-502-LCD accuracy tables on page 6.

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USB-500/600 SeriesSpecifications
USB-502-LCD

ΔRH (%RH)

Temperature and Humidity Logger
with LCD± 10

Temperature±8

Measurement range: –35 ˚C to 80 ˚C(–31 ˚F to 176 ˚F)Accuracy (overall error)*: ±0.5 ˚C typ, ±2 ˚Cmax; ±1 ˚F typ, ±4 ˚F max
Internal resolution: 0.5 ˚C, 1 ˚F typ
Alarm threshold range (software-selectable):–35 ˚C to 79.5 ˚C (–31 ˚F to 175 ˚F,high and low alarms

USB-502/USB-502-LCD
maximum error
typical accuracy

±6
±4
±2
±0

Relative Humidity (%RH)

Measurement range: 0% to 100%
Accuracy (overall error)*: 2.25% RH typical (20% RH to 80% RH)
Internal resolution: 0.5% RH typLong term stability: <0.25% RH/year
Alarm threshold range: 0% to 99.5% (high and low alarms)

0

10

20

30

40

50

60 70 80 90 100
Relative Humidity (%RH)

Typical and maximum tolerance for USB-502/USB-502-LCD at 25 °C
for relative humidity.
USB-502/USB-502-LCD

Dew Point

Relative Humidity (%RH)

Accuracy (overall error)*: ±1.7 ˚C typ (–35 °C to 80 °C, 40% RH to 100% RH)
The overall error takes into account the sensor accuracy and the resolution of
the data logger

Data Sampling

Sampling interval (software-selectable): 10 s, 30 s, 1 min, 5 min, 15 min,30 min, 1 h, 2 h, 6 h, 12 hTemperature samples: 16,379 max
Relative humidity samples: 16,379 max
Temperature units: ˚C or ˚F
Logging modes: Immediate, delayed start, and push to start (through the LCD
button on the device)
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when memory is filled

100 ±3.59080
70 ±3 ±2.560
50 ±2.5
40
30
20
10 ±3
0 ±3.50

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Relative Humidity (%RH)

The high-contrast LCD shows temperature data and information regarding thelogger status.
Temperature (˚C/˚F): Current temperature, stored max, and stored min values
Relative humidity (%RH): Current relative humidity, stored max, and stored
min values
LCD mode (software-selectable): Always on; on for 30 seconds after the LCD
button is pressed; always off

USB-502/USB-502-LCD±2.0
maximum error
typical accuracy

±1.5

±3.5
±4
±3 ±3.5±3 ±3.5
±3

±2

±2.5
±3
20 30 40 50 60
Temperature (°C)

70

80

Typical accuracy of relative humidity measurements for USB-502/
USB-502-LCD given in %RH for temperatures 0 °C to 80 °C.

LCD Status Indicators

ΔT (°C)

10

±3
±2.5

80
60

Normal
Range

40

Max.
Range

20
0
−40 −20±1.0

USB-502/USB-502-LCD

100

0

20

40

60

80 100 120
Temperature (°C)

Long-term exposure of the USB-502/USB-502-LCD to humidity levels
outside of the “normal” range may temporarily offset RH measurements(±3 %RH after 60 hours). Once returned to less extreme conditions,the device slowly returns toward calibration state.

±0.5
±0.0
−40

−20

0

20

Power

40
60
80
Temperature (°C)

Power source: 1/2AA 3.6 V lithium battery
Battery life: 2 years at 25°C and 1 min logging rate, LCD on

Environmental

Typical and maximum tolerance for USB-502/USB-502-LCD temperature sensor in °C.

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)
Note: At temperatures below –20 ˚C (–4 ˚F), the LCD may exhibit slower responsetime of approximately 10 seconds

Mechanical

Dimensions (L × W × H): 126 × 25 × 22 mm (4.96 × 0.98 × 0.86 in.)

* The overall error takes into account the sensor accuracy and the data logger
resolution. Refer to the USB-502/USB-502-LCD accuracy tables on this page.

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USB-500/600 SeriesSpecifications
USB-502-PLUS

USB-502-PLUS
Relative Humidity (%RH)

Temperature and Humidity Logger
with Increased Accuracy
Temperature

Measurement range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)Accuracy (overall error)*: 0.45 °C (0.86 °F) typ(5 °C to 60 °C)
Internal resolution: 0.5 ˚C (1 ˚F) typLong term stability: <0.02 ˚C (0.86 °F) typ(5 °C to 60 °C)
Alarm threshold range (software-selectable): –35 ˚C
to 79.5 ˚C (–30 ˚F to 175 ˚F) (high and low alarms)

Relative Humidity (%RH)

0

Measurement range: 0% to 100%
Accuracy (overall error)*: ±2.0 typ, ±4.0 max
Specifies the overall error in the logged readings for relative humidity measurements between 10% and 90% RH
Internal resolution: 0.5% RH typLong term stability: <0.25 %RH/year
Alarm threshold range: 0% to 99.5% (high and low alarms)

Relative Humidity (%RH)

Accuracy (overall error): 1.5°C typical (–35 to 80°C, 40% RH to 100% RH)

USB-502-PLUS±2.0
maximum error
typical accuracy

±1.5

±2.5
±2

±3
±3.5
±2.5 ±3±2.5 ±3
±2.5

±1.8

±2
±2.5

10

20 30 40 50 60
Temperature (°C)

70

80

Typical accuracy of relative humidity measurements for USB‑502‑PLUS
given in %RH for temperatures 0 °C to 80 °C.

Dew Point*

ΔT (°C)

100 ±39080
70 ±2.5 ±2
60
50 ±2
40
30
20
10 ±2.5
0 ±3USB-502-PLUS

100
80
60

Max.
Range

Normal
Range

40
20
0
−40 −20

±1.0

0

20

40

60

80 100 120
Temperature (°C)

Long-term exposure of the USB-502-PLUS to humidity levels outsideof the “normal” range may temporarily offset RH measurements (±3%RH after 60 hours). Once returned to less extreme conditions, thedevice slowly returns toward calibration state.

±0.5
±0.0
−40

−20

0

20

40
60
80
Temperature (°C)

Data Sampling

Sample rate (software-selectable): 10 s, 30 s, 1 min, 5 min, 15 min, 30 min, 1 h,
2 h, 6 h, 12 hTemperature samples: 16,382 max
Relative humidity samples: 16,382 max
Temperature units: ˚C or ˚F
Logging modes: Immediate and delayed start
Data rollover (software-selectable): Allows unlimited logging periods by overwriting the oldest data when the memory is full.

Typical and maximum tolerance for USB-502-PLUS temperature
sensor in °C.

USB-502-PLUS

ΔRH (%RH)± 10

maximum error

USB Specifications

typical accuracy±8

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

±6

Power

Power source: 1/2AA 3.6 V lithium battery
Battery life: 3 years at 25°C and 1 min logging rate

±4

Environmental

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)
Ingress protection: Meets IP67 Standard with protective cap installed±2±0

Mechanical
0

10

20

30

40

50

Dimensions (L × W × H): 4.25 × 0.98 × 0.86 in. (108 × 25 × 22 mm)

60 70 80 90 100
Relative Humidity (%RH)

Typical and maximum tolerance for USB‑502‑PLUS at 25 °C for
relative humidity.

* The overall error takes into account the sensor accuracy and the data logger
resolution. Refer to the USB-502-PLUS accuracy tables on this page.

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USB-500/600 SeriesSpecifications
USB-503

Data Sampling

Max event or state change samples: 32,510
Timing accuracy: ±3 s per day at 20 °C
Sampling intervals (software-selectable): 10 s, 30 s, 1 min, 5 min, 15 min, 30 min
Max event samples: 32,510

Voltage Logger
Voltage

Measurement range: 0 VDC to 30 VDCInternal resolution: 50 mVDC
Accuracy (overall error): ±1% typ

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Data Sampling

Sampling intervals (software-selectable): 1 s,
2 s, 5 s, 10 s, 30 s, 1 min, 5 min, 15 min,30 min, 1 h, 2 h, 6 h, 12 h
Max voltage samples: 32,510
Units: VDC

Power

Power source: 1/2AA 3.6 V lithium battery
Battery life: 1 year typ (depends on operating mode)

Environmental

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

MechanicalPower

USB-525 Logger AssistantDimensions (L × W × H): 98.0 × 26.8 × 26.8 mm (3.86 × 1.05 × 1.05 in.)Power source: 1/2AA 3.6 V lithium battery
Battery life: 1 year typ

Portable Device for USB-500 Model Logger
Setup and Data Viewing

Environmental

Compatible Data Loggers

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)Mechanical

Dimensions (L × W × H): 98.0 × 26.8 × 26.8 mm (3.86 × 1.05 × 1.05 in.)USB-504
4-20 mA Current Logger
Current

Measurement range: 4 mA DC to 20 mA DC typ
Internal resolution: ±0.05 mA DC
Accuracy (overall error): ±1%• USB-501-LT• USB-501-TC• USB-501• USB-501-TC-LCD• USB-501-LCD• USB-502• USB-501-PRO• USB-502-LCD• USB-501-RCG• USB-502-PLUS

MemoryInternal flash memory: Stores over 8,500,000
temperature/humidity samples

Data Sampling

LCD

Sampling intervals (software-selectable): 1 s,
2 s, 5 s, 10 s, 30 s, 1 min, 5 min, 15 min,30 min, 1 h, 2 h, 6 h, 12 h
Max current samples: 32,510
Units: mA DC

240 × 320 pixels, 2.8” thin film transistor with touch-screen
Time out (software-selectable): Backlight turns off after 10 s, 20 s, 30 s, or 1 minof inactivity

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0
USB type a socket (top of device): Connects to compatible USB-500 Series data logger
Micro-USB socket (bottom of device): Connects device to computer using 1 m(3.28 ft) USB cable (included)

USB Specifications

USB device type: USB 2.0 (Full-speed)Device compatibility: USB 1.1, USB 2.0

PowerPower source: 1/2AA 3.6 V lithium battery
Battery life: 2 years at 25 °C and 2 s logging rate

Power

Environmental

Operating temperature range: –35 ˚C to 80 ˚C (–31 ˚F to 176 ˚F)Power source: Lithium polymer battery, rechargeable using micro-USB connection
Battery life: 8 hours max (intermittent use), 5 hours min (constant use)
Power down: Device powers down after 5 minutes of inactivity

MechanicalEnvironmental

Dimensions (L × W × H): 98.0 × 26.8 × 26.8 mm (3.86 × 1.05 × 1.05 in.)Operating temperature range: 0 ˚C to 50 ˚C (32 ˚F to 122 ˚F)

USB-505

Mechanical

Dimensions (L × W × H): 107 × 68 × 19 mm (4.2 × 2.7 × 0.7 in.)Counter, Event and State Logger
Counter, Event and State

Event/state change frequency: 2 Hz max
Time in state: 100 ms min
Resolution event /state mode: 100 ms (dependingon operating mode)
Count/count per frequency: 100 Hz max(40 Hz max when event LED is enabled )Voltage

Input range: 3 VDC to 28 VDCVolt free contacts voltage resolution: 50 mVDC

Current

Volt free contacts current: 35 µA typ

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USB-500/600 SeriesSpecifications
USB-601

USB-602

Temperature Logger with
Graphic LCD Screen

Temperature/Humidity Logger with Graphic
LCD Screen

Temperature

Temperature

Data Sampling

Relative Humidity (%RH)

Measurement range: –30 ˚C to 80 ˚C (–22 ˚F to 176 ˚F)Internal resolution: 0.1 ˚C (0.1 ˚F) typ
Accuracy (overall error)*: 0.35 °C (0.59 °F) typ(5 °C to 60 °C)

Measurement range: –30 ˚C to 80 ˚C (–22 ˚F to 176 ˚F)Internal resolution: 0.1 ˚C (0.1 ˚F) typ
Accuracy (overall error): ±0.5 ˚C (±1.0 ˚F) typ, ±2.0 ˚C(±4.0 ˚F) max

Sampling intervals (software-selectable): 10 s,
15 s, 20 s, 30 s, 1 min, 2 min, 5 min, 10 min,15 min, 20 min, 30 min, 1 h, 2 h
Max temperature samples: 252,928
Units: ˚C or ˚F

Measurement range: 0% to 100%
Accuracy (overall error)*: ±2.0 typ, ±4.0 max
Note: Specifies the overall error in the logged readings for relative humidity measurements between
20% and 80% RH
Internal resolution: ±0.1 %RH typLong term stability: 0.5 typ (%RH per year)
Alarm threshold range: 0% to 99.5% (high and low alarms)

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Dew PointPower

Accuracy (overall error)*: ±1.1 ˚C (±2.0 ˚F) typ

Power source: Two 1/2AA 3.6 V lithium batteries
Battery life: 4 months typ
Moisture and dust protection: IP67
Operating temperature range: –30 ˚C to 80 ˚C (–22 ˚F to 176 ˚F)±2.0

Mechanical±1.5

maximum error

Dimensions (L × W × H): 3.46 × 1.90 × 1.20 in. (88 × 48.5 × 30.5 mm)

USB-601

Temperature error vs temperature

typical accuracy

±1.0

1.0
0.8

±0.5

0.6

Temperature Error (°C)

USB-602

ΔT (°C)

Environmental

0.4
0.2

±0.0

0

−40

-0.2

−20

0

20

-0.4

40
60
80
Temperature (°C)

Typical and maximum tolerance for USB-602 temperature sensor in °C.

-0.6
-0.8
-1.0

-50

-25

0

25

50

75

10 0

USB-602

ΔRH (%RH)

125

± 10

Temperature (°C)

Temperature error for USB-601 temperature sensor in °C.

maximum error
typical accuracy

±8
±6
±4
±2
±0
0

10

20

30

40

50

60 70 80 90 100
Relative Humidity (%RH)

Typical and maximum tolerance for USB‑602 at 25 °C for relative
humidity.

* The overall error takes into account the sensor accuracy and the data logger
resolution. Refer to the USB-601 and USB-602 accuracy tables on this page andon page 10.

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February 2017. Rev 10© Measurement Computing Corporation

USB-500/600 SeriesSpecifications
USB-603

Relative Humidity (%RH)

USB-602
100 ±39080
70 ±2.5 ±2
60
50 ±2
40
30
20
10 ±2.5
0 ±3
0

±2.5
±2

±3
±3.5
±2.5 ±3±2.5 ±3±2.5

Two-Channel Thermocouple Logger with
Graphic LCD Screen
Temperature

Measurement ranges
K-type thermocouple: –200 ˚C to 1350 ˚C(–328 ˚F to 2462 ˚F)J-type thermocouple: –200 ˚C to 1190 ˚C(–328 ˚F to 2174 ˚F)T-type thermocouple: –200 ˚C to 390 ˚C(–328 ˚F to 734 ˚F)Internal resolution: 0.1 ˚C (0.1 ˚F) typ
Above 999.9 °C/˚F display becomes 1 °C. Internal
resolution remains at 0.1 °C/˚F.
Accuracy (overall error): ±0.5 ˚C (±0.9 ˚F) typ
Quoted accuracy is for the data logger only
when measuring within the specified operating temperature. Thermocouple
error is not included and should also be taken into consideration.

±1.8

±2
±2.5

10

20 30 40 50 60
Temperature (°C)

7080

Relative Humidity (%RH)

Typical and maximum accuracy of relative humidity measurementsfor USB‑602 given in %RH for temperatures 0 °C to 80 °C.

Included Thermocouple Probes

Type: K
Measurement range: 0 ºC to 400 ºC (32 ºF to 752 ºF)
Accuracy: ±2.5 ºC (±4.5 ºF)Connector type: Mini-thermocouple
Cable length: 1.5 m
Stainless steel probe length: 100 mm
To improve response time, the thermocouple probes supplied with theUSB-603 are not electrically isolated from the thermocouple junction.
Depending upon the application, it may be necessary to use electrically-isolated
thermocouple probes to avoid ground loops, and/or situations where the probes
may come into contact with conductors that are at different electrical potentials.
If unsure of the application needs, Measurement Computing recommends using
electrically-isolated probes.

USB-602100
80
60

Normal
Range

40

Max.
Range

20
0
−40 −20

0

20

40

60

80 100 120
Temperature (°C)

Data Sampling

Sampling intervals (software-selectable): 2 s, 5 s, 10 s, 15 s, 20 s, 30 s, 1 min,
2 min, 5 min, 10 min, 15 min, 20 min, 30 min, 1 h, 2 h
Max temperature samples: 252,928
Units: ˚C or ˚FLong-term exposure of the USB-602 to humidity levels outside of the“normal” range may temporarily offset RH measurements (±3 %RH
after 60 hours). Once returned to less extreme conditions, the device
slowly returns toward calibration state.

USB Specifications

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Data Sampling

Sampling intervals (software-selectable): 10 s, 15 s, 20 s, 30 s, 1 min,
2 min, 5 min, 10 min, 15 min, 20 min, 30 min, 1 h, 2 h
Max temperature samples: 252,928
Units: ˚C or ˚FPowerPower source: Two 1/2AA 3.6 V lithium batteries
Battery life: 4 months typ at 25 ˚C and 10 minute logging rate with no audible
alarm or alarm LEDs and minimal LCD use

USB Specifications

Environmental

USB device type: USB 2.0 (full speed)Device compatibility: USB 1.1, USB 2.0

Operating temperature range: –10 ˚C to 40 ˚C (–14 ˚F to 104 ˚F)Applies to the data logger module only. Refer the probe manufacturer for
operating temperature of thermocouple.

Power

Power source: Two 1/2AA 3.6 V lithium batteries
Battery life: 4 months typ at 25 ˚C and 10 minute logging rate with no audible
alarm or alarm LEDs and minimal LCD use

Mechanical

Dimensions (L × W × H): 4.01 × 1.90 × 1.20 in. (102.0 × 48.5 × 30.5 mm)

Environmental

Moisture and dust protection: IP67
Operating temperature range: –30 ˚C to 80 ˚C (–22 ˚F to 176 ˚F)
At temperatures below -5 °C the LCD exhibits slower response times. The LCD
is disabled at temperatures below -20 °C and above 70 °C.

Mechanical

Dimensions (L × W × H): 3.46 × 1.90 × 1.20 in. (88 × 48.5 × 30.5 mm)

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USB-500/600 Series
Ordering Information
Order Information
Part No.

Description

Part No.

Description

USB-501-LT

Lowest-cost temperature logger temperature logger
measures and stores over 4,000 temperature readings.

USB-502-PLUS

USB-501

Battery-powered remote temperature logger measuresand stores up to 16,382 temperature readings.

Temperature and humidity logger with increased
accuracy (±0.45 ˚C typical, ±2.05 %RH typical)
measures and stores over 16,000 readings.

USB-503

Voltage data logger measures and stores over 32,000
readings.

USB-504

Current loop data logger measures and stores over
32,000 readings

USB-505

Event, state change, and event count logger measuresand stores over 32,000 readings.

USB-525

Temperature logger with rechargeable battery
measures and stores over 32,000 temperature
readings.

Portable Logger Assistant for logger setup and data
viewing from compatible USB-500 model dataloggers.

USB-601

Thermocouple data logger measures and storesover 32,000 temperature readings. One K-type
thermocouple included.

Temperature logger with graphic LCD screen, device
controls, and multi-session logging measures andstores over 250,000 readings.

USB-602

Thermocouple data logger with LCD measures andstores over 32,000 temperature readings. One K-type
thermocouple included.

Temperature/humidity logger with graphic LCD
screen, device controls, and multi-session logging
measures and stores over 250,000 readings.

USB-603

Two-channel thermocouple logger with graphic LCD
screen, device controls, and multi-session logging
measures and stores over 250,000 readings. Two
K-type thermocouples included.

USB-501-LCD

Battery-powered remote temperature logger with
LCD measures and stores up to 16,379 temperature
readings.

USB-501-PRO

Temperature logger with rugged enclosure andextended temperature range (–40 ˚C to 125 ˚C)measures and stores over 32,000 temperature
readings.

USB-501-RCG

USB-501-TC

USB-501-TC-LCD

USB-502

Temperature and humidity logger measures andstores over 16,000 readings.

USB-502-LCD

Temperature and humidity logger with LCD measuresand stores over 16,000 readings.

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February 2017. Rev 10© Measurement Computing Corporation