外接式  記錄器

Accepts external sensors and input cables for:
Temperature
AC Current
4-20 milliamps
0 to 2.5 Volts DC

 Features and specifications

• Operating environment: weatherproof case, tested to NEMA 6
• Accepts external sensors and input cables for temperature, AC current, 0-2.5 Volt DC and 4-20 mA
• Capacity: 32,520 measurements total
• User-selectable sampling interval: 0.5 seconds to 9 hours, recording times up to 1 year
• Readout and relaunch with optional HOBO Shuttle
• Drop-proof to 5'
• Programmable start time/date
• Operating range: -4°F to +158°F (-20°C to +70°C)
• Access port provides easy data offload
• Mounting hardware included (4 mounting screws and washers)
• Size: 5.50" x 5.38" x 1.25" (140 x 137 x 32mm)
• Weight: approx. 7 oz. (200 grams)
• Memory modes: stop when full, wrap-around when full
• Nonvolatile EEPROM memory retains data even if battery fails
• Blinking LED light confirms operation
• User-replaceable battery lasts 1 year
• Battery level indication at launch
• Time accuracy: ±1 minute per week at +68°F (+20°C)

Wide range of sensors available

There are a wide range of external sensors and input cables available for the HOBO H8 Outdoor/Industrial 4-Channel External logger:

• TMC6-HB and TMCx-HA series temperature sensors with lengths from 1' to 50'
• TMC6-HC stainless steel temperature probe
• Split-core AC current sensors, with ranges from 0-20 A to 0-600 A (these are not weatherproof)
• 0-2.5 V input cable
• 4-20 mA input cable

External input specifications

• 2.5 mm jack: ground, input, switched 2.5 Volts output; ground connection is the same as PC interface connector ground
• Input range: 0 to +2.5 Volts DC
• Accuracy: ±10 mV ±1% of reading
• Resolution: 10 mV (8-bit)
• Output power: ±2.5 Volts DC at 2 mA, active only during measurements