LI25 Series Loop-Powered Meters Instruction Manual
The LI25 Series Loop-Powered Meters are intrinsically safe and non-incendive devices approved for hazardous area locations, as well as general-purpose meters for safe area applications. These meters feature a 5-digit LCD display, a 20-segment bargraph, and engineering units to provide clear process data presentation. They support signal conditioning functions such as square root and programmable exponent to handle non-linear transmitter signals without external components.
The manual details the complete operation of the device, including unpacking, panel mounting, and 4-20 mA input connections. It provides step-by-step instructions for setup and programming via four front panel buttons, covering tasks like scaling, calibration, password setting, and advanced math functions. The document also includes troubleshooting tips and factory default settings.
| Display | Five digits (-99999 to 99999), 0.60" high |
|---|---|
| Bargraph | 20-segment, 0% to 100% indication |
| Operating Temperature | -30 to 65°C (-40°C allowed) |
| Input Accuracy | ±0.03% of span ±1 count |
| Voltage Drop | 2.0 V maximum (5.7 V with backlight) |
| Memory Retention | Minimum of ten years if power is lost |
Yes, the LI25-2001 model is an intrinsically safe and non-incendive loop-powered meter approved for hazardous area locations.
Recalibration is recommended at least every 12 months.
No, the meter uses non-volatile memory and does not require a battery.