Omega Products OM-40-C-HT-B User Manual

OM-40 Series Portable Low Cost Data Loggers Part of the NOMAD
$
65
Basic Unit
Measure and Record
Temperature, Relative Humidity, DC Voltage or DC Current Input
Stores up to 7943
Readings
Compact SizeEasy-to-Use
Windows Software
The OM-40 Series data loggers can record temperature, relative humidity, 4 to 20 mA and 0 to 2.5 Vdc signals. Model OM-41 measures temperature only (internal temperature sensor). Model OM-42 is a two channel data logger that measures temperature (internal sensor) and also one external signal which can be an external temperature probe, 4 to 20 mA signal or 0 to 2.5 Vdc signal. Model OM-43 measures temperature and relative humidity (internal sensors). Model OM-44 is a four channel data logger that measures temperature and relative humidity (internal sensors) and also up to two external signals which can be external temperature probes, 4 to 20 mA signals or 0 to 2.5 Vdc signals.
The internal temperature sensor is on a 10.6 cm (4") wire which is mounted on the circuit board inside the snap lid of the data logger case. Typically this sensor is left inside the case and measures ambient air temperature over the operating temperature range of the logger
-20 to 70°C (-4 to 158°F).
The internal temperature sensor can also be placed outside of the case, for faster response time. When the sensor is placed outside of the case it is capable of measuring temperatures from
-40 to 120°C (-40 to 248°F).
OM-41 data logger, $65, shown larger than actual size
Specifications
GENERAL Measurement Capacity:
7943 readings Measurement Interval: User selectable from 0.5 sec to 9 hrs Memory Modes: Stop when full, wrap-around when full (user selectable) Memory: Non-volatile EEPROM memory retains data even if battery fails Operation: Blinking LED light confirms operation Time Accuracy: ±1 minute per week at 20°C (68°F)
Operating Temperature:
-20 to 70°C (-4 to 158°F)
Operating Humidity:
0 to 95% non-condensing
Storage Temperature:
-20 to 70°C (-4 to 158°F) Power: 3.0 V lithium battery (included)
Battery Life: 1 year Dimensions:
68 H x 48 W x 19 mm D (2.4 x 1.9 x 0.8")
Weight: 29 g (1 oz)
E-37
®
Family
Measurement Specifications Temperature (internal sensor) - All Models
Measurement Range: Sensor
inside case, -20 to 70°C (-4 to 158°F); sensor outside case,
-40 to 120°C (-40 to 248°F)
Sensor Type: Thermistor Accuracy: +0.7°C@21°C
(+1.27°F @ 70°F) (see plot)
Temperature Measurement Accuracy/Resolution
Resolution:
0.4°C (0.7°F) at 70°F
Response Time (Still Air):
15 min typical with sensor inside case; 1 min typical with sensor outside case
Relative Humidity (user-replaceable internal sensor) Models OM-43 and OM-44 Measurement Range:
25 to 95% RH at 80°F for intervals of 10 seconds or greater, non­condensing and non-fogging (see plot)
Relative Humidity Measurement Range vs. Temperature
Windows Software-Data Plot.
Windows Software-Data logger Setup.
OM-44 data logger, $109, shown smaller than actual size.
OM-43, $99, data logger smaller than actual size.
Sensor Type: Resistive Accuracy: ±5%
5 to 50°C (41 to 122°F) Resolution: 0.4% 5 to 50°C (41 to 122°F)
Response Time:
10 min typical in air
External Temperature Sensors (for use with Models OM-42 and OM-44) Measurement Range:
OM-40-C-HT-B (for use in
water or soil): -40 to 50°C (-40 to 122°F)
OM-40-C-HT-B (for use in air):
External 4 to 20 mA Input (for use with Models OM-42 and OM-44) Measurement Range: 0 to 20.1 mA
Input Connection:
2.5 mm stereo phone jack
Accuracy: ±0.1 mA ±1% rdg Resolution: 0.4% of fs
External 0 to 2.5 Vdc Input (for use with Models OM-42 and OM-44) Measurement Range:
0 to 2.5 Vdc
Input Connection:
2.5 mm stereo phone 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 Impedance: 10 k Accuracy: ±10 mV ±1% rdg Resolution: 10 mV (8-bit) Output Power: 2.5 Vdc
at 2 mA, active only during measurements
-40 to 100°C (-40 to 212°F)
Sensor Type: Thermistor Input Connection:
2.5 mm stereo phone jack
ALL MODELS AVAILABLE FOR FAST DELIVERY!
To Order
(Specify Model Number)
Model No. Price Description
OM-41 $65 Temperature data logger
OM-42 72 Temperature/external input data logger (takes one external input)
OM-43 99 Temperature/relative humidity data logger
OM-44 109 Temperature/relative humidity/external input data logger (takes up to two external inputs)
OM-40-C-HT-B 39 External temperature sensor for use with Models OM-42 and OM-44 (high temperature range,
OM-40-C-V 11 External 0 to 2.5 Vdc voltage input cable for use with Models OM-42 and OM-44
OM-40-C-I 19 External 4 to 20 mA input cable for use with Models OM-42 and OM-44
RD-TEMP-SW-A 59 Windows 98/NT/2000/XP software and RS-232 interface cable with DB9F termination
OM-40-BATT-6 20 Replacement 3.0 V lithium battery for OM-40 Series data loggers (package of 6)
for use in air or water) 1.8 m (6') cable
for OM-40 Series data loggers
E
Data loggers are supplied with complete operator's manual and mounting kit (hook/loop, magnet and tape).
Ordering Example: OM-44 data logger, OM-40-C-HT-B
and
RD-TEMP-SW-A
Windows software, $109 + 39 + 11 + 59 =
external temperature sensor,
$218.
OM-40-C-V
voltage input cable,
E-38
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