Portable Low-Cost Data Loggers
Part of the NOMAD®Family
OM-PL Series
Starts at
$
113
⻬ Measure and Record
Temperature, Relative
Humidity, Pressure,
4 to 20 mA, AC Voltage,
and AC Current
⻬ Selectable Sample Rate:
1 Second to 18 Hours
(1-Second Increments)
⻬ Real-Time Data Monitoring
⻬ High/Low Alarm
Threshold Settings
⻬ Visual Alarm Indication
⻬ User-Selectable Recording
Start (Specified Date and
Time, Immediately After
Setup, or on Door Close)
⻬ 20-Month Battery Life
(at 1-Minute Sample Rate)
The OM-PL Series data loggers are
versatile devices that can be used
for a wide range of logging
applications. Each data logger is
capable of sampling data as fast as
once per second or as slow as once
every 18 hours. The data logger can
stop recording when memory
becomes full or rollover for
continuous recording. The start of
recording is software selectable to
be immediate, delayed, or initiated
when the data logger door is closed.
The data logger can also be used
to monitor high and low alarm
events, which indicate if the
recorded data passed above and/or
below the user-selected threshold.
The alarm events are stored
separately from the data samples
and are not affected by data
rollover. When the recorded data
passes the high or the low alarm
threshold, the data logger records
the time of the alarm.
When the recorded data returns to
within the acceptable range, the
data logger records the duration of
the alarm. Up to 50 such alarm
events can be recorded. The data
logger has a visual indication of an
alarm condition without the need to
connect to the computer.
All OM-PL Series data loggers have
an internal real-time clock/calendar.
This real-time clock is used to
record the time stamps for data
samples and alarm events. It is
independent of the computer clock
and can be set separately, or set to
match the computer clock.
These data loggers provide a high
level of data security. They have
physical security, when the data
access door is locked, as well as
software security. It is virtually
impossible to falsify sample data or
alarm information of OM-PL Series
data loggers. Their power
requirement is very low: under
normal operating conditions, a 9-volt
alkaline battery will last 18 months to
2 years.
OM-PLT2, $113, shown
smaller than actual size.
OM-PL Series data loggers have
the capacity to store over 10,000
readings. Simply connect the
data logger to your PC’s serial port
and use the available Windows
software to set up parameters for
your recording session. Once
the data logger is set up, you can
disconnect it and put it in the field to
record data. The data logger door
can be locked on to prevent
accidental or intentional disruptions
of the recording session. When
recording is completed, reconnect
the data logger to your PC and
download the recorded data using
the Windows software. The
Windows software allows you to view
recorded data in text or graphical
format. OM-PL models are available
to record internal temperature and
an external temperature channel
(OM-PLT2); two external temperature
channels (OM-PLTT); temperature,
humidity and dew point (OM-PLTH);
temperature and pressure (OM-PLPT);
AC current and voltage (OM-PLCV);
4 to 20 mA (OM-PL420); and
internal temperature and an external
thermocouple input (OM-PLTC).
To Order, Call or Shop Online at omega.com
SM
1
Specifications
GENERAL
Operating Temperature Range
(Data Logger): 0 to 60°C (32 to 140°F)
using alkaline battery; -40 to 65°C
(-40 to 150°F) using lithium battery
Humidity:
0 to 95% RH, non-condensing
Storage Temperature:
-40 to 77°C (-40 to 170°F)
Time Accuracy: ±100 ppm @ 75°F
Power: 9 V alkaline or lithium battery
Battery Life (Average Use):
20 months using alkaline battery,
40 months using lithium battery
Dimensions: 7.6 W x 6.4 H x 2.8 cm D
(3 x 2.5 x 1.1")
Weight: 71 g (2.5 oz)
Software: WIN/XP/VISTA 32-bit
(VISTA 32-bit version only;
VISTA 64-bit is not supported)
Measurement Interval: 1 sec
to 18 hr (selectable in 1-second
increments)
Computer Interface: RS-232
standard; for computers with only
a USB port, use model no.
OM-PL-USBS (RS-232/USB adaptor)
OM-PLTT, $165,
shown smaller
than actual size.
OM-PLTT DUAL TEMPERATURE
DATA LOGGER
Channels: Two external
temperature channels
Sample Point Capacity: 21,500
temperature points for single
channel (1 probe); 10,750
temperature points per channel
for dual channel (2 probes)
Alarms: High and low alarms for
each probe
External Probe Temperature
Range: -46 to 150°C (-50 to 300°F)
Accuracy: ±1°C (±2°F)
Resolution: 0.05 °C (0.1°F)
Probe: 76 mm (3") stainless steel
tip, 1.8 m (6') cable
Calibration: Single point offset
calibration available through software
Relative Humidity Range:
0 to 99.9% RH, non-condensing
Relative Humidity Accuracy:
±2% full scale, from 0 to 95% RH
for temperatures between 0 and 60°C
(32 to 140°F)
Relative Humidity Resolution:
0.1% RH
Calibration: Single point offset
calibration available through software;
humidity is factory calibrated
OM-PLPT, $205,
shown smaller
than actual size.
OM-PLT2, $113,
shown smaller
than actual size.
OM-PLT2 TEMPERATURE
DATA LOGGER
Channels: One internal
temperature channel and one
external temperature channel
Sample Point Capacity: 21,500
points for single channel; 10,750
points per channel for dual channel
Alarms: High and low alarms for
internal and external channel
Temperature Range: Internal
sensor: 0 to 60°C (32 to 140°F) with
alkaline battery, -40 to 65°C (-40 to
150°F) with lithium battery; external
sensor: -40 to 65°C (-40 to 150°F)
Accuracy: ±0.5°C (±1.0°F)
Resolution: 0.05°C (0.1°F)
External Probe Temperature
Range: -40 to 65°C (-40 to 150°F)
Calibration: Single point offset
calibration available through software
OM-PLTH, $130,
shown smaller than actual size.
OM-PLTH TEMPERATURE/
HUMIDITY DATA LOGGER
Channels: Two internal channels
(temperature and humidity);
two calculated channels (dew point
and wet bulb)
Sample Point Capacity: 21,500 for
temperature only; 10,750 points for
temperature, humidity and dew point
Alarms: High and low alarms for
temperature and humidity
Temperature Range: 0 to 60°C
(32 to 140°F) with alkaline battery,
-40 to 65°C (-40 to 150°F) with
lithium battery
Temperature Accuracy: ±1°C (±2°F)
Resolution: 0.05°C (0.1°F)
OM-PLPT PRESSURE AND
TEMPERATURE DATA LOGGER
Channels: Two external channels
(temperature and pressure)
Sample Point Capacity: 21,500
points for temperature or pressure;
10,750 points for both pressure and
temperature
Alarms: High and low alarms for
temperature and pressure
Temperature Range: -40 to 65°C
(-40 to 150°F)
Temperature Accuracy:
±0.5°C (±1°F)
Resolution: 0.05°C (0.1°F)
Temperature Probe: -40 to 65°C
(-40 to 150°F)
Pressure Range: 0 to 500 psi
Pressure Accuracy: ±3 psi
Pressure Resolution: 0.15 psi
Pressure Sensor: Stainless steel
sensor, 1.8 m (6') cable,
1
⁄4 NPT
male pressure port
Operating Temperature Range
(Pressure Sensor): 0 to 54°C
(32 to 130°F)
Calibration: Single point offset
calibration available through software;
pressure is factory calibrated
2
To Order, Call or Shop Online at omega.com
SM
OM-PLTC, $145,
shown smaller than actual size.
OM-PLTC
THERMOCOUPLE DATA LOGGER
Channels: Two channels, one for
internal ambient temperature and
one for external thermocouple input
Measurement Capacity:
10,750 points for both internal
temperature and external
thermocouple input
Thermocouple Types
(External Channel):
J, K, T, E, R, S (software selectable)
Thermocouple Temperature
Ranges:
Type J: -79 to 732°C
(-110 to -1350ºF)
Type K: -140 to 1038°C
(-220 to 1900°F)
Type T: -148 to 349°C
(-235 to 660°F)
Type E: -59 to 560°C
(-75 to 1040°F)
Type R: 0 to 1449°C
(32 to 2640°F)
Type S: 0 to 1449°C
(32 to 2640°F)
Thermocouple Connection:
Subminiature female
thermocouple jack
Accuracy (Thermocouple Channel):
Type J, K, T: ±0.8°C (±1.5°F)
Type E: ±0.6°C (±1.0°F)
Type R, S: ±2.8°C (±5°F)
Resolution (Thermocouple
Channel): 0.05°C (0.1°F)
Accuracy (Internal Channel):
±1°C (± 2°F)
Resolution (Internal Channel):
0.05°C (0.1°F)
Alarms: High and low alarms
for thermocouple and ambient
temperature
Calibration: Single point offset
calibration available through software
for both internal ambient channel and
external thermocouple channel
OM-PLCV, $165,
shown smaller
than actual size
OM-PL420, $105,
shown smaller than actual size.
OM-PL420
4 to 20 MA DATA LOGGER
Channels: One 4 to 20 mA input
Measurement Capacity:
21,500 points
Alarms: High and low alarms
Input Current Range: 0 to 40 mA
Current Accuracy: ±0.05 mA
Current Resolution: 0.01 mA
Calibration: Single point offset
calibration available through
software
OM-PLCV CURRENT AND
VOLTAGE LOGGER
Channels: Two channels,
one for AC current (measured
using supplied current probe)
and one for AC voltage
Sample Point Capacity: 21,500
points for current or voltage; 10,750
points for both current and voltage
Alarms: High and low alarms for
current and voltage
Current Range: 0 to 300 Aac
Current Accuracy: ±5%
Current Resolution: 0.1 Aac
Voltage Range: 0 to 500 Vac
Voltage Accuracy: ±1 Vac
Voltage Resolution: 0.1 Vac
Calibration: Single point offset
calibration available through
software; current and voltage are
factory calibrated
Windows software
displays data in
graphical or tabular
format.
To Order, Call or Shop Online at omega.com
SM
3
OM-PL SERIES LOGGER
Extended Warranty
Program
SM
INTERFACE SOFTWARE
SPECIFICATIONS
Sampling Interval:
User-selectable from 1 second to
18 hours, in 1-second increments
Interface: COM (RS232) serial port.
Software supports COM1 through
COM8. Optional USB interface
(model no. OM-PL-USBS).
Alarms: Visual alarms with userselectable low and high thresholds
for every channel
Alarm Memory: Up to 50 alarm
events. Alarm start time and alarm
duration are stored
Data Security: Locking sliding door
prevents physical access to the
logger data. Unique factory set logger
ID. Data collection session counter.
Compatibility: WIN XP/VISTA 32bit (VISTA 32-bit version only;
VISTA 64-bit is not supported)
Minimum System Requirements:
8MB of RAM, 2 MB of disk space,
800 x 600 resolution, 1 free COM
port or a free USB port (optional
USB interface is required: Model
OM-PL-USBS)
Recording Start: On door close,
immediately after setup, or at a userspecified date and time
Recording Mode: Stop on memory
full or continuous recording with
memory rollover
Real-Time Status: Visual indication
through the status LED. Userselectable status display frequency
and LED brightness, software realtime status
User Calibration: Passwordprotected calibration for each channel
User Message: Up to 30 characters
Logger Channels: User selectable.
Disabling channels increases the
storage capacity of the other
Units: US and Metric
(user-selectable units)
Data Format: Custom format
exportable to text or Excel
spreadsheet
Real-Time Monitoring: Logger can
be permanently connected to the
computer and used as a real-time,
multichannel sensor with logging
capability. Battery does not drain
when logger is connected to the
computer
OMEGACARE
available for models shown on this page. Ask
your sales representative for full details when
placing an order. OMEGACARE
labor and equivalent loaners.
4
Windows software
displays data in
graphical or
tabular format.
Windows software
displays graphs,
tables, and alarm
summary (start
and end times).
MOST POPULAR MODELS HIGHLIGHTED!
To Order (Specify Model Number)
channels.
SM
extended warranty program is
SM
covers parts,
To Order, Call or Shop Online at omega.com
Model No. Price Description
OM-PLT2 $113 Temperature data logger
OM-PLTT 165 Dual-temperature data logger
OM-PLTH 130 Temperature and humidity data logger
OM-PLPT 205 Pressure and temperature data logger
OM-PLCV 165 AC current and voltage data logger
OM-PL420 105 4 to mA data logger
OM-PLTC 145 Thermocouple data logger
OM-PLLS 59 Windows software, 1.8 m (6') RS232 cable and adaptor
OM-PL-USBS 49 USB to RS232 converter
All data loggers are supplied with complete operator’s manual. OM-PLT2 includes one
external temperature sensor (4.6 m [15'] cable, epoxy-coated tip). OM-PLTT includes two
external temperature probes (1.8 m [6'] cable, 76 mm [3"] long stainless steel probe with
penetration tip). OM-PLPT includes one external temperature sensor (4.6 m [15'] cable, epoxy
coated tip) and one pressure transducer (1.8 m [6'] cable, stainless steel pressure transducer
with 1⁄2 NPT male pressure port). OM-PLCV includes AC current clamp and set of voltage test
leads. OM-PLTC includes 1 m (3') long beaded wire Type K thermocouple with subminiature
male connector.
Ordering Example: OM-PLTT, dual-temperature data logger, OMEGACARESM, 1-year
extended warranty for OM-PLTT (adds 1 year to standard 1-year warranty), and OM-PLLS
Windows software with RS232 cable, $165 + 25 + 52 = $242.
SM
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