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Section 2 Technical Specifications
2.1 Dimension
HK-H375A: 228mm x 98mm x 60mm
(Clips and cable not included)
2.2 HART
®
Connector
a) In conformity with HART Protocol (HCF);
b) Operating mode: intercommunication semiduplex 1200bit/s
c) Receivable voltage: ±40V
d) Leakage current less than 1uA at 20°C
e) Communication distance less than 1500m
f) Isolation mode: isolation between HART communication connector and power supply
g) Rating isolation voltage: 500Vrms
2.3 PC Connector
This connector is used for software update. Please contact Tel-Tru for information on
software updates.
2.4 Power Supply
Power Supply: 4.5V DC;
Power Consumption: 91.3mA (Typical value under working state)
1uA (Typical value under power-off state)
2.5 Battery
Power Supply: Three AA 1.5V alkaline batteries or rechargeable NiCad/NiMH batteries.
Battery Life: 100 hours (AA Alkaline Batteries)
80 hours (1000mA Rechargeable Batteries)
NOTE:
The Communicator will shut down automatically if not used within 10 minutes.
2.6 Temperature Limit
Operating Temperature: 0°C ~+50°C
Storage Temperature: -20°C~+55°C
Note: The service lifetime of the LCD display will be shortened if the device is continuously
exposed to direct sunlight.
2.7 Liquid Crystal Display (LCD)
The LCD is an 8-line by 21 characters display that provides human-machine interface
(HMI). When the communicator is connected to a HART compatible device, the top line of
each Online Menu displays the model name and the tag of the device.
Typically, the performance of LCD displays will decrease if the ambient temperature is too
