Shepherd Personal Monitor

Shepherd’s Personal Monitor empowers field crews to quickly respond to prevent toxic gas incidents, injuries, and fatalities while ensuring regulatory compliance. The monitors feature two-way connectivity, multigas detection, GPS location, and check-in/out-of-location logging. Field crew safety and location can be monitored in real time from the Shepherd 24×7 real-time operations center or from a client operations center. Shepherd’s “Lone Worker System” includes a mobile head unit that conveniently fits under the seat in a truck to alert others if a worker encounters gas, even if they are alone on a location.

Shepherd’s Personal Monitor requires no additional data storage, management, or communications subscription fees. Incorporating these monitors into the worksite reduces risk and lowers the total cost of operations.

Advanced Features

Hardware Features

Individual identification with GPS coordinate tracking
Check employees in and out of the location
Single- or multigas Full integration with Shepherd communications hub, controller, and alarm stands

STANDARD SAFETY FEATURES

Emergency/panic alarm with push-button
Low battery with configurable threshold
Configurable timer for worker check-in,
5–180 min, or off
Home-based geofence
Gas alarm features
- Time-weighted average (TWA)
- Short-term exposure limit (STEL)
- High and low gas alerts
- Bump test and calibration notification and
  failure alert

POWER/BATTERY

Rechargeable Li-ion battery, 2,000 mAh
Battery life 8 days, 192 hr @ 70°F under normal usage
Charge time 8 hr, max 10 hr
Charging status monitoring

ARM Cortex-M3 microcontroller with up to 512-kb flash,
80-kb RAM
Logging data written to fl flash memory chip in a circular fashion; new data replaces the oldest
Entries time time-stamped with UTC time at the time written
Logs may be read by the host over the radio link
60 days of data in typical use
Events of interest written as they occur
- Status messages for start/end of warning, start/end
  of alarm, bump test
- Calibration
Adequate storage for 6 months assuming 1 alarm/day,
1 bump test/day, 1 calibration/week
Communicates to servers through base station and
Shepherd DigitalSafetyTM Hub controller
Wireless radio
- Zigbee radio, 2.5 GHz
- TX power +18 dBm
- RX sensitivity –101 dBm
- Mesh capable
- Internal antenna
- Radio link range 598.4 yd [547.1 m] line of sight if not
  using mesh capability

Specifications

Location Technology

GPS radio – 72-channel high sensitivity
GPS accuracy – 16 ft [~5 m] outdoors
Location update frequency – Configurable
Default – 60 sec

User Notification

Personal alarm indicators – Speaker, LEDs, and vibration motor
Sound pressure level – ~90 dB @ 3.94 in. [~90 dB @ 10 cm]

User Interface

Display – Dot matrix liquid crystal with front lighting, menu system
Operation – 2-button keypad for power on/off, check-in, emergency/panic

Wireless Updates

Device config. Changes – Yes
Device firmware upgrade – Over-the-air (FOTA)

Shepherd Portal Application

Safety monitoring application, highly customizable for specific customer requirements.
Includes live map, alert management, device configurations, alert setups, and reporting.

Environmental

Storage temperature: –22°F to 140°F [–30°C to 60°C] Operating temperature: –4°F to 122°F [–20°C to 50°C] Charging temperature: 32°F to 113°F [0°C to 45°C] Ingress protection: IP67

Gas Sensor Options

H2S (hydrogen sulfide)
Sensor type – Electrochemical
Range – 0–100 ppm
Resolution – 1 ppm
LEL combustible
Sensor type – NDIR
Range – 0–100% LEL
Resolution – 1% LEL
COSH (hydrogen sulfi de, carbon monoxide)
Sensor type – Electrochemical
Range – H2S 0–100 ppm
Resolution – H2S 0.2 ppm
Range – CO 0–400 ppm
Resolution – CO 1 ppm

SO2 (sulfur dioxide)
Sensor type – Electrochemical
Range – 0–100 ppm
Resolution – 0.1 ppm
O2 (oxygen, lead free)
Sensor type – Long-life pump, electrochemical
Range – 0–25% vol
Resolution – 0.1% vol
Certifications
IEC – 60079-0 60079-11
Class I, Division 1