Model LI1X Universal Process Meter
Instruction Manual
Model LI1X Universal Process Meter
Instruction Manual
Select Input Signal
The meter can be programmed to accept current or voltage input
using the Signal Input Selection Array. This jumper array is located at
the rear of the instrument, next to the screw terminal block. Remove
jumper J3 (if installed) to disable Lockout feature.
Table 1: Signal Input Selection Array
Initial Calibration with External Source (If Needed)
Initial calibration is required only when the
I-
C
AL
feature is to be used
with an input other than the default input of 4-20 mA. For best results,
allow the meter to warm up for at least 30 minutes.
1. Program the Signal Input Selection Array for desired input per
Table 1 above.
2. Apply power with
ENTER
and
ACK
buttons pushed. Release when
display stops flashing.
3. The meter scrolls through the choices
20, 5,
and
10.
Which
corresponds to input signals of 4-20 mA, 0-5 V or 1-5 V, and 0-10 V.
Push
ENTER
when desired value appears.
4. The meter flashes
InPt 1
. Apply low end signal, (4 mA or 0 V)*,
push
ENTER
.
5. The meter flashes
InPt 2
. Apply high end signal, (20 mA, 5 V,
10 V), push
ENTER
.
6. This completes the Initial Calibration and initializes INPUT 1 and
INPUT 2 scaling points to 4.000 & 20.000 mA, 0.000 & 5.000 V, or
0.000 & 10.000 V.
7. Refer
to
I-
C
AL
scaling below for further instructions.
*For 1-5 V input signals, calibrate the meter with input1=0 V,
input 2=5 V.
20
Input Signal
Jumper J1
Jumper J2
1-5, 0-5V
OFF
OFF
0-10 V
OFF
ON
4-20,0-20 mA
ON
OFF
21
Select Calibration Method
The meter may be calibrated using an external signal source such as a
calibrator (
E-
C
AL
), or scaled using the internal source (
I
I-
C
AL
). With
I-
C
AL
, a 4-20 mA input can be scaled for any display range without
applying a signal. To scale inputs such as 0-5 V, 1-5 V or 0-10 V without
applying a signal, it is necessary to first complete an Initial Calibration,
see Initial Calibration with External Source (If Needed) on page 20.
Scale or Calibrate the Meter
To select a Calibration Method, apply power with
ACK
button pressed.
1. When display stops flashing, release
ACK
button. Display
alternates between
E-
C
AL
and
I-
C
AL
.
2. To calibrate meter with an external source, such as a calibrator,
press
ENTER
when
E-
C
AL
appears.
3. To scale meter with internal source, press
ENTER
when
I-
C
AL
appears.
Select Decimal Point (
dE
C
Pt
)
To program the decimal point or light up the extra "0", push
ENTER
.
The meter displays
S
C
ALe
or
C
alib
, then
dE
C
Pt
. Push
ENTER
when
dE
C
Pt
appears. The meter then reads 199990 with the decimal point
changing locations and the extra "0" illuminating. Push
ENTER
when
the decimal point is in the desired position; or if the extra "0" is
desired; when the extra "0" is displayed.
Select Linear Input (
L or S
)
The meter can be programmed to either process the input signal in a
linear fashion (
L
) or to take the square root of it (
S
). To program the
meter for a linear input, push
ENTER
. When (
L or S
) appears, push
ENTER
again. The meter will flash (
L or S
) alternately. Press
ENTER
when (
L
) is flashing. After (
L
) is selected the meter will switch to indi-
cation mode and is ready to be calibrated.
Select Number of Calibration Points (
no. PtS
)
The user may input up to 11 calibration points and corresponding
displays to provide custom linearization. To program the number of
calibration points, push
ENTER
, when (
no. PtS
) appears, push
ENTER
again. The meter displays a number from 2 to 11 that represents the
number of calibration points. Push
ENTER
when the number equals
the desired number of calibration points. As soon as the number of
points is programmed, the meter flashes
InPt 1
(Indicating it is ready
to be calibrated). Refer to Scale Using Internal Calibration (
I-
C
al
),
page 22 or Calibrate Using an External Calibrator
(
e-
C
al
) on page 23.
Spec Tech Industrial Electric
www.spectechind.com
888-773-2832
Spec Tech Industrial Electric
www.spectechind.com
888-773-2832
