Genius Environment Monitor Series 1 (GEM 1)

Proactive Monitoring to Detect Current Flow on Sensitive Voice or Data Conductors.



The GEM 1 units are analog monitoring devices capable of sensing current.

These units are passive devices and will not interrupt equipment activity or the system being monitored.

All units are comprised of a multi-range DC power supply and LED indicator panel. Each unit can be equipped with a large or small core sensor and standard or custom length cables.

Both the GEM 1 and GEM 1E have one (1) input channel. The GEM 1E enhanced unit also provides an interface to simulate a 50mV shunt output for an existing Data Collection Device. The GEM 1D dual unit is equipped with two (2) input channels.

User Friendly: Simple setup and calibration with recessed controls to prevent tampering.

Monitor Disturbances: Single channel input can supply the information necessary to detect problems when and where they occur.

Easy Installation: Passively connects to conductor without disturbing existing equipment. Easily interfaces with existing alarm monitoring systems.

Cost Effective: Makes fault monitoring more economical with higher perfor¬mance and value.

Accurate Electrical: Simultaneous AC and DC monitoring using Hall-effect sensors. AC current is measured in Peak or True-RMS.

Accuracy:

RangeResolutionAccuracy
20 amp
100 amp
200 amp
2000 amp
0.01
0.10
0.10
1.00
+/-1%
+/-1%
+/-1%
+/-1%

 

BELLCORE TESTED & NEBS APPROVED

The GEM 1 are instruments that are simple, easy to use, and designed to monitor current on a conductor. When a preset parameter is violated, an LED provides a visual alarm indicator. If the optional alarm cable is attached to an existing alarm reporting system, a second alarm will be activated. These units also effectively aid in the troubleshooting process by isolating problems associated with faulted conductors or improperly connected equipment.

SPECIFICATIONS

Installation
Each unit mounts into a 19” rack. Adapters are available for a 23” rack. The split-core sensor is installed around the conductor to be monitored. The sensor core fits conductors up to a maximum of 2” in diameter. An installation manual is provided with each unit, providing you with step-by-step instructions and additional information.

Power
Each unit uses less than 25 watts of power and requires a 20-72 VDC input voltage range for standard operation.

System Input
The GEM 1 and GEM 1E each have one (1) channel capable of monitoring current on a conductor. The GEM 1D dual unit has two (2) channels. Filtering circuits provide true readings of both AC and DC up to 1050Hz. AC current is measured in Peak or True-RMS.

System Output
Visual alarms or contact closures indicate when preset parameters are exceeded. A contact closure is provided for AC high, AC low, DC high and DC low parameter violations. An LED indicator also provides the user with the parameter that is exceeded.

Visual alarms can be individually enabled or disabled according to the user application. When the alarm latch switch is activated, the indicator will remain lit until the alarm condition is remedied and the operator resets the alarm latch.

AC and DC readings are accurate to within +/-1.0%.

The GEM 1E also provides an interface that simulates a 50mV shunt output for an existing data collection device.

User Interface
There are four (4) individual parameter settings provided for each channel: AC high, AC low, DC high and DC low. Individual offsets for both AC and DC are also provided to ensure proper calibration of the sensor prior to installation. All parameters are set via the meter panel and recessed controls.

Analog Settings

AC:0 to 200 amps
DC:-200 to +200 amps
Sensor Offset:Calibration Zeroing

 

GEM Current Sensors
GEM Current Sensors utilize Hall-effect circuitry that maximizes voltage isolation and minimizes any external noise that may be present within an electrically “hot” environment.

The sensor has a split core design for easy installation and connects to the GEM unit via a shielded 8-conductor flat cable that uses a standard RJ-45 connector.

There are multiple ranges of sensors available in both large and small split core. The sensors can be used with all GEM units. All sensors are factory calibrated.

The response time of the sensor is less than 50 microseconds, so it can be used to measure starting surges for motors and electronic loads as well as other devices. This is useful when selecting the proper size power conditioning equipment.

These sensors are well suited for variable frequency AC systems with DC components or chopped waveforms.

RangeResolutionAccuracy
20 amp
100 amp
200 amp
2000 amp
0.01
0.10
0.10
1.00
+/-1%
+/-1%
+/-1%
+/-1%

 

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GEM 1 Manual

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GEM 1 Repair and Component Replacement

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