Large Display Temperature Meters
Instruction Manual
10
Specifications
Except where noted all specifications apply to operation at +25°C.
Basic Temperature Meter
INPUTS
Field selectable: type J, K, T, E, R, or S thermocouples with 1
°
resolution; type T to 0.1
°
; 100
Ω
platinum RTD (0.00385 or
0.00392 curve) to 1
°
or 0.1
°
resolution.
DISPLAY
4½ digit, high efficiency red LED, automatic lead zero blanking,
F or C displayed to indicate Fahrenheit or Celsius.
Digit Size:
PD755– 1.0" (25.4 mm) high
PD756– 0.8" (20.3 mm) high
PD757– 2.3" (58.0 mm) high
COLD JUNCTION
REFERENCE
Automatic, fixed, no user calibration needed.
INPUT
IMPEDANCE
Greater than 100 k
Ω
LOCKOUT
Jumper JP2, located on Main PCB, restricts modification of set
values.
ACCURACY
Input
Type
Range
Accuracy
Type J T/C
–328
°
to 1382
°
F
–200
°
to 750
°
C
±
2
°
F
±
1
°
C
Type K T/C
–328
°
to 2498
°
F
–200
°
to 1330
°
C
±
2
°
F
±
1
°
C
Type T T/C
–330.0
°
to 760.0
°
F
–200.0
°
to 404.0
°
C
±
2
°
F
±
1
°
C
Type E T/C
–328
°
to 1832
°
F
–200
°
to 1000
°
C
±
2
°
F
±
1
°
C
Type R T/C
32
°
to 3213
°
F
0
°
to 1767
°
C
±
5
°
F
±
3
°
C
Type S T/C
40
°
to 3214
°
F
4
°
to 1768
°
C
±
6
°
F
±
3
°
C
100
Ω
RTD
–328.0
°
to 1382.0
°
F
–200.0
°
to 750.0
°
C
±
0.7
°
F
±
0.4
°
C
RECALIBRATION
All ranges are calibrated at the factory. Recalibration is
recommended at least every 12 months.
INPUT OFFSET
Programmable to
±
100% FS display. This parameter allows the
user to apply an offset value to the input temperature being
displayed.
SENSOR BREAK
DETECTION
Open sensor circuit indicated by display flashing
OPEn
. All relays
and alarm status LEDs go to alarm state.
MAX/MIN
TEMPERATURE
DISPLAY
The maximum and minimum temperature reached by the process
is stored in memory until cleared (reset) by the user or until power
to the meter is turned off. Max/min values are displayed via the
ENTER
button and
HI t
,
LO t
menu functions, respectively.
