Omega Products OM-PLPT User Manual

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