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Portable Low Cost Data Loggers Part of the NOMAD® Family

 

- Model OM-51 Monitors Contact Closures
- Model OM-52 for Motor On/Off Applications
- Easy-to Use Windows Software


Feature

Portable Low Cost Data Loggers Part of the NOMAD® Family (State Logger, Motor On/Off Logger)

 

OM-50 Series data loggers record when devices change between on and off or open and closed states and store the time, date and state for each change (the black arrows in the diagram below show when data is recorded).

These data loggers have two LED indicator lights, one red and one green. One of these LEDs will blink every two seconds. If the contact is open or the device is off, the red LED will blink. If the contact is closed or the device is on, then the green LED will blink. Although the LEDs blink every other second, the state is checked every half second, with state changes recorded as detected. Simply connect the data logger to your PC using the RS-232 cable and download stored data using the Windows software.

Model OM-51 State data logger has two inputs, a magnetic reed switch located in the middle of the hinge of the case (opposite the connectors), and an external contact closure input. The data logger records contact closures/openings of its internal magnetic reed switch and contact closures (open/shorted) in a cable connected to its 2.5 mm stereo jack. The OM51 data logger detects the cable's open/shorted condition by applying a positive voltage pulse to the tip (white wire in the cable).

Model OM-52 Motor On/Off Data logger uses an AC magnetic field threshold sensor to determine if a motor is on or off. The AC magnetic field threshold is approximately 2 Gauss at 60 Hz. Position the logger so that its green LED blinks when the motor is on. is usually best to mount the data logger on the side of the motor.


Spesification

MEASUREMENT SPECIFICATIONS

OM-51 STATE DATA LOGGER Inputs: two inputs; a magnetic sensor mounted in the datalogger and an external cable for detecting contact closures (external cable is included).
 

Spacing Between Data logger and External Magnet:
closed, less than or equal to 3/4"; open, greater than or equal to 3/4" (external magnet is included)
External Contact Input: passive relay switch or contact closure

OM-52 MOTOR ON/OFF DATA LOGGER Sensor Type: AC field sensor Magnetic Field Threshold: approx. 2 Gauss at 60 Hz; the logger will typically work with AC motors drawing 1A or more
 

Mounting: mount the data logger on or close to the motor housing or to one phase of the power line to the equipment being monitored
 

Angular Response: the datalogger is sensitive to that part of the AC field that is perpendicular to the data logger's face

 

 

GENERAL SPECIFICATIONS

Measurement Capacity: 2000 state changes
Time Resolution: 0.5 seconds Minimum State Duration: 0.5 seconds
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 lights show current state
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: 3.6 V lithium battery
Battery Life: 1 year
Dimensions: 2.4"H x 1.9"W x 0.8"D (68 x 48 x 19 mm)
Weight: 1 oz (29 g)

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Sangat jarang perusahaan seperti ini di Indonesia!  Mereka terus-menerus mengikuti perkembangan inovasi engineering test & measurement, “nyambung” berdiskusi teknis dan berpengalaman, memiliki visi pengembangan teknologi pengukuran, pengujian, inspeksi dan monitoring.(Dr.-Ing. Ir. May Isnan - NDT Specialist B2TKS-BPPT)

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