709H产品概述
Fluke reliable. HART compatible.
Fluke puts HART communication in a precision loop calibrator.
The Fluke 709 and 709H mA loop calibrators are designed to save time and produce high-quality results. These calibrators are built around a user friendly interface with a quick-set rotary encoder knob. This tool reduces the time it takes to measure, or source, current and power up a loop. The protective holster easily fits into a technician's hand and the large backlit display is easy to read, even in dark, cramped worked areas.
Features:
Best-in-class accuracy at 0.01% reading
Compact rugged design
Intuitive user interface with quick-set knob for fast setup, easy use
24 V dc loop power with mA measure mode (–25% to 125%)
Resolution of 1 μA on mA ranges and 1 mV on voltages ranges
Built in selectable 250 Ω resistor for HART communications
Simple two wire connection for all measurements
Auto shutdown to conserve battery life
Variable step and ramp time in seconds
Valve test (source and simulate defined mA values with % keys)
HART communication
The Fluke 709H offers a built-in HART modem for communication capability to perform the following commands:
Read message
Read tag, descriptor, calibration date
Read sensor PV information
Read PV output information
Read long tag
Write PV ranges (upper and lower)
Enter/exit fixed current mode
Set zero offset
Trim DAC zero (mA output 4 mA)
Trim DAC gain (mA output 20 mA)
The Fluke 709H also offers ability to store up to twenty HART device configuration files for uploading via 709H/TRACK software. Configurations can be stored as .csv or .txt files. This allows the end user to document plant HART easily.
Configurations can be stored as .csv or .txt files. This feature gives the technician direct access to key device parameters, allowing better troubleshooting, calibrating and maintaining of plant assets.
Datasheet
