User guide

Series LPI Loop Powered Indicator
Specifications - Installation and Operating Instructions
Bulletin E-90-LPI
DWYER INSTRUMENTS, INC. Phone: [phone] www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: [phone] e-mail: [e-mail]
The Series LPI is a loop powered indicator with a 4-digit red
LED display. The Series LPI accepts a 4-20 mA input signal and
displays the associated process variable. The instrument configu-
ration settings are selectable via a simple to use menu system,
which is navigated by the use of three push-button keys located
on the rear of the display. The entire assembly is sealed into a cap
that fits directly onto the connecting heads.
Please inspect the packaging and instrument thoroughly for any
signs of transit damage. If the instrument has been damaged,
please notify your supplier immediately.
INSTALLATION
The maximum current rating for this device is 100 mA for 1
minute. Exceeding this value will destroy the device. Fuse protec-
tion of the current loop to which this device is connected is high-
ly recommended.
This unit must only be series connected to 4 to 20 mA current
loop. This device will be destroyed if connected directly across
any supply with a current output greater than 100 mA.
Ensure the instrument is installed with adequate protection
against the environment. IP67 rating must be maintained.
Try to avoid installing the equipment close to sources of extreme
temperature and electrical or electromagnetic interference.
Configuration - Connect the device to a 4 to 20 mA loop, set at
any value between 4 and 20 mA. To configure the device follow
the simple configuration menus printed on the reverse side of this
sheet. Fit the correct units legend to the front panel face.
Enclosure - All external cabling/sensor entries must maintain
IP67 rating.
SPECIFICATION @ 68°F (20°C)
Input: 4 to 20 mA.
Maximum Input Current: 100 mA for 1 minute.
Accuracy: ±0.02% of full scale.
Stability: Zero: 0.002%/°C; Span: 100 ppm/°C.
Power Requirements: 2-wire 4-20 mA loop powered.
Display: 4-digit, 7.6 mm (high) red LED.
Maximum Display Range: -1999 to 9999.
Ambient Operating Temperature: -4 to 167°F (-20 to 75°C).
Storage Temperatures: -58 to 185°F (-50 to 85°C).
Weight: 6.0 oz (170 g).
Front Panel Protection: NEMA 4X (IP65).
Agency Approvals: CE.
Wiring and switch location (viewed looking at connector)
LPI Typical Wiring
CONFIGURATION MENU
The prime function of the Series LPI device is to sink a 4-20 mA
current input and display the associated process variable (PV) in
appropriate engineering units.
The section below describes the menus accessible on the LPI. By
accessing these menus, the user can modify the instrument con-
figuration in many ways. The following section refers to the config-
uration menu to describe how to configure the input scaling.
The instrument needs to know at least 2 co-ordinate pars to define
the relationship between mA input and display PV. The default
method is to have SCAL (scaling) set to StNd (standard). This allows
the user to edit the ENLO (engineering low) and ENHI (engineering
high) PV values that correspond to 4 mA and 20 mA input values,
respectively. The default values for ENLO and ENHI are 0 & 100,
respectively, giving a linear display range of 0-100 for 4-20 mA
input.
LPI
SWITCHES
SWITCH
TERMINAL
(23/64)
(
8.9
)
(Ø2-5/8)
(Ø66.7)
(13/64)
(5)
(13/16)
(20.7)
(Ø2-7/8)
(Ø73)
E-90-LPI 8/9/05 11:50 AM Page 1